Each large certificated air carrier shall keep its books of account, records and memoranda and make reports to the BTS in accordance with this system of accounts and reports. The BTS reserves the right, however, under the provisions of sections 49 U.S.C. 41701 and 41708, to expand or otherwise modify the classes of carriers subject to this system of accounts and reports.

A waiver from any provision of this system of accounts or reports may be made by the BTS upon its own initiative or upon the submission of written request therefor from any air carrier, or group of air carriers, provided that such a waiver is in the public interest and each request for waiver expressly demonstrates that: existing peculiarities or unusual circumstances warrant a departure from a prescribed procedure or technique; a specifically defined alternative procedure or technique will result in a substantially equivalent or more accurate portrayal of operating results or financial condition, consistent with the principles embodied in the provisions of this system of accounts and reports; and the application of such alternative procedure will maintain or improve uniformity in substantive results as between air carriers.

(a) This system of accounts and reports is designed to permit limited contraction or expansion to reflect the varying needs and capacities of different air carriers without impairing basic accounting comparability as between air carriers. In its administration three air carrier groups, designated Group I, Group II, and Group III, respectively (see section 04), are established by the BTS. This grouping will be reviewed from time to time upon petition of individual air carriers or by initiative of the BTS with the view of a possible regrouping of the air carriers.

(b) Under the system of accounts prescribed, balance sheet elements are accounted for by all air carrier groups within a fixed uniform pattern of specific accounts. All profit and loss elements are accounted for within specific objective accounts established for each air carrier group resulting from dual classifications, designated for each air carrier group, which are descriptive of both basic areas of financial activity, or functional operation, and objective served. The profit and loss elements of the three air carrier groups can be reduced to broad objectives and general or functional classifications which are comparable for all air carrier groups. Both balance sheet and profit and loss accounts and account groupings are designed, in general, to embrace all activities, both air transport and other than air transport, in which the air carrier engages and provide for the separation of elements identifiable exclusively with other than air transport activities. Profit and loss elements which are recorded during the current accounting year are subclassified as between (1) those which relate to the current accounting year and adjustments of a recurrent nature applicable to prior accounting years, and (2) extraordinary items of material magnitude.

(c) In order to afford air carriers as much flexibility and freedom as possible in establishing ledger and subsidiary accounts to meet their individual needs, a minimum number of account subdivisions have been prescribed in this Uniform System of Accounts. It is intended, however, that each air carrier, in maintaining its accounting records, will provide subaccount and subsidiary account segregations of accounting elements which differ in nature of accounting characteristics, in a manner which will render individual elements readily discernible and traceable throughout the accounting system, and will provide for relating profit and loss elements to applicable balance sheet counterparts.

(a) A four digit control number is assigned for each balance sheet and profit and loss account. Each balance sheet account is numbered sequentially, within blocks, designating basic balance sheet classifications. The first two digits of the four digit code assigned to each profit and loss account denote a detailed area of financial activity or functional operation. The first two digits, thus assigned to each profit and loss account, are numbered sequentially within blocks, designating more general classifications of financial activity and functional operation. The second two digits assigned to profit and loss accounts denote objective classifications.

(b) A fifth digit, appended as a decimal, has been assigned for internal control by the BTS of prescribed subdivisions of the primary objective balance sheet and profit and loss classifications. A different fifth digit code number from that assigned by the BTS may be adopted for internal recordkeeping by the air carrier provided the prescribed subclassification of objective accounts is not impaired and the code number assigned by the BTS is employed in reporting to the BTS on Form 41 Reports.

(a) The general books of account and all books, records, and memoranda which support in any way the entries therein shall be kept in such manner as to provide at any time full information relating to any account. The entries in each account shall be supported by such detailed information as will render certain the identification of all facts essential to a verification of the nature and character of each entry and its proper classification under the prescribed Uniform System of Accounts. Registers, or other appropriate records, shall be maintained of the history and nature of each note receivable and each note payable.

(b) The books and records referred to herein include not only accounting records in a limited technical sense, but all other records such as organization tables and charts, internal accounting manuals and revisions thereto, minute books, stock books, reports, cost distributions and other accounting work sheets, correspondence, memoranda, etc., which may constitute necessary links in developing the history of, or facts regarding, any accounting or financial transaction.

(c) All books, records and memoranda shall be preserved and filed in such manner as to readily permit the audit and examination thereof by representatives of the DOT. All books, records, and memoranda shall be housed or stored in such manner as to afford protection from loss, theft, or damage by fire, flood or otherwise and no such books and records shall be destroyed or otherwise disposed of, except in conformance with 14 CFR part 249 for the preservation of records.

(a) Separate accounting records shall be maintained for each air transport entity for which separate reports to the BTS are required to be made by sections 21(g) and for each separate corporate or organizational division of the air carrier. For purposes of this Uniform System of Accounts and Reports, each nontransport entity conducting an activity which is not related to the air carrier's transport activities and each transport-related activity or group of activities qualifying as a nontransport venture pursuant to paragraph (b) of this section, whether or not formally organized within a distinct organizational unit, shall be treated as a separately operated organizational division; except that provisions of this paragraph and paragraph (b) shall not apply to leasing activities.

(b) As a general rule, any activity or group of activities comprising a transport-related service provided for in transport-related revenue and expense accounts 09 through 18 shall be considered a separate nontransport venture under circumstances in which either: (1) A separate corporate or legal entity has been established to perform such services, (2) the aggregate annual revenue rate, as determined in section 2-1(d), during either of the prior two years exceeds the greater of $1 million per annum or one percent of the air carrier's total annual transport revenues, or (3) the aggregate annual expense rate, as determined in section 2-1(d), during either of the prior two years exceeds the greater of $1 million or one percent of the carrier's total annual operating expenses: Provided, That revenues and expenses from in-flight sales, and interchange sales shall be considered related to air transportation and accounted for accordingly, regardless of the revenue or expense standard set forth above.

(c) The records for each required accounting entity shall be maintained with sufficient particularity to permit a determination that the requirements of section 2-1 have been complied with.

To the end that uniform accounting may be maintained, questions involving matters of accounting significance which are not clearly provided for should be submitted to the Director, Office of Airline Information, K-25, Bureau of Transportation Statistics, for explanation, interpretation, or resolution.

Reports required by this section shall be submitted to the Bureau of Transportation Statistics in a format specified in accounting and reporting directives issued by the Bureau of Transportation Statistics' Director of Airline Information.

(a) The accounting provisions contained in this part are based on generally accepted accounting principles (GAAP). Persons subject to this part are authorized to implement, as prescribed by the Financial Accounting Standards Board, newly issued GAAP pronouncements until and unless the Director, Office of Airline Information (OAI), issues an Accounting Directive making an initial determination that implementation of a new pronouncement would adversely affect the Department's programs.

(b) The Director, OAI, shall review each newly issued GAAP pronouncement to determine its affect on the Department's regulatory programs. If adopting a specific change in GAAP would adversely affect the Department's programs, the Director will issue the results of the review in the form of an Accounting Directive. The directive will state the reasons why the particular change should not be incorporated in the uniform system of accounts and contain accounting guidance for maintaining the integrity of the Department's air carrier accounting provisions.

(c) Objections and comments relating to the Department's decision not to implement a change in generally accepted principles may be addressed to Director, Office of Airline Information, K-25, U.S. Department of Transportation, 1200 New Jersey Avenue, SE., Washington, DC 20590. If significant objections are raised urging adoption of a particular GAAP pronouncement, the Department will institute a rulemaking.

(a) The provisions of this section shall apply to each person controlling an air carrier, each person controlled by the air carrier, as well as each transport entity and organizational division of the air carrier for which separate records must be maintained pursuant to section 1-6.

(b) Each transaction shall be recorded and placed initially under accounting controls of the particular air transport entity or organizational division of the air carrier or member of an affiliated group to which directly traceable. If applicable to two or more accounting entities, a proration shall be made from the entity of original recording to other participating entities on such basis that the statements of financial condition and operating results of each entity are comparable to those of distinct legal entities. The allocations involved shall include all debits and credits associated with each entity.

(c) For purposes of this section, investments by the air carrier in resources or facilities used in common by the regulated air carrier and those transport-related revenue services defined as separate nontransport ventures under section 1-6(b) shall not be allocated between such entities but shall be reflected in total in the appropriate accounts of the entity which predominately uses those investments. Where the entity of predominate use is a nontransport venture, the air carrier shall reflect the investment in account 1510.3, Advances to Associated Companies.

(d) For purposes of this Uniform System of Accounts and Reports, all revenues shall be assigned to or apportioned between accounting entities on bases which will fully recognize the services provided by each entity, and expenses, or costs, shall be apportioned between accounting entities on such bases as will result: (1) With respect to transport-related services, in the assignment thereto of proportionate direct overheads, as well as direct labor and materials, of the applicable expense functions prescribed by this system of accounts and reports, and (2) with respect to separate ventures, in the assignment thereto of proportional general and administrative overheads as well as the direct overheads, labor, and materials.

(a) Revenues and expenses attributable to a single natural objective account or functional classification shall be assigned accordingly.

(b) Revenue and expense items which are common to two or more natural objective accounts shall be recorded in the objective accounts to which they predominantly relate.

(c) Expense items contributing to more than one function shall be charged to the general overhead functions to which applicable except that where only incidental contribution is made to more than a single function an item may be included in the function to which primarily related, provided such function is not distorted by including an aggregation of amounts applicable to other functions. When assignment of expense items on the basis of the primary activity to which related does not in the aggregate result in a fair presentation of the expenses applicable to each function, apportionment shall be made between functions based upon a study of the contribution to each function during a representative period.

(a) The accounting year of each air carrier subject to this Uniform System of Accounts shall be the calendar year unless otherwise approved by the BTS.

(b) Each air carrier shall keep its financial accounts and records on a full accrual basis for each quarter so that all transactions, as nearly as may reasonably be ascertained, shall be fully reflected in the air carrier's books for the quarter in which revenues have been earned and the costs attaching to the revenues so earned in each quarter have been incurred independently of the incidence of sales or purchases and settlement with debtors or creditors.

(c) Expenditures incurred during the current accounting year which demonstrably benefit operations to be performed during subsequent accounting years to a significant extent shall be deferred and amortized to the period in which the related operations are performed when of sufficient magnitude to distort the accounting results of the year in which incurred.

(d) Expenditures charged directly or amortized to operations within one accounting year shall not be reversed in a subsequent accounting year and reamortized or charged directly against operations of subsequent years except that retroactive adjustments are permitted where necessary to conform with adjustments required by the DOT for ratemaking purposes.

(a) Revenue accounting practices shall conform to the provisions of account 2160, Air Traffic Liability.

(b) Each route air carrier shall physically verify the reliability of its passenger revenue accounting practice at least once each accounting year.

(c) For those carriers who use the yield or average-fare method to determine earned revenue, the analysis supporting the verification shall include:

(1) The cutoff date for the liability to be verified; such cutoff date shall be at the end of a calendar month.

(2) The number of months after the cutoff date during which documents were examined to verify the liability; the number of months after the cutoff date during which documents are examined shall not exceed the maximums set forth below:

(3) The nature of the documents which were examined for purposes of the verification.

(4) The totals for each of the various types of documents examined, on actual or sampling basis.

(5) A description of the sampling technique and conversion to totals, if sampling was employed.

(6) The amount and basis for all estimates employed in the verification.

(7) The amount of resulting adjustments and the quarter in which such adjustments were, or are to be, made in the accounts.

(d) For those carriers who use the sales-lift match method to determine earned revenue, the analysis supporting the physical inventory verification shall include:

(1) The cutoff date for the liability to be verified; such cutoff date shall be at the end of a calendar month.

(2) A trial balance as of the cutoff date of all subaccounts supporting the Air Traffic Liability control account; the subsidiary trial balance must agree with the Air Traffic Liability control account or a reconciliation statement furnished.

(3) A statement to the effect that a sales listing of the value of all unmatched auditor coupons has been compiled and compared to the general ledger control figure; the statement required by this subparagraph shall indicate whether or not the value of the unmatched coupons is in agreement with the general ledger. If the sales listing is not in agreement with the Air Traffic Liability control account, the amount of such difference shall be shown on such statement.

(a) The balance sheet accounts are designed to show the financial condition of the air carrier as at a given date, reflecting the asset and liability balances carried forward subsequent to the closing or constructive closing of the air carrier's books of account.

(b) The balance sheet accounts prescribed in this system of accounts for each air carrier group are set forth in Section 3, Chart of Balance Sheet Accounts. The balance sheet elements to be included in each account are presented in section 6.

(a) Record here all general and working funds available on demand as of the date of the balance sheet which are not formally restricted or earmarked for specific objectives. Funds deposited for special purposes which are to be satisfied within one year shall be included in account 1100 Short-term Investments and funds restricted as to general availability, which are not offset by current liabilities, shall be included in account 1550 Special Funds.

(b) Each air carrier shall subdivide this account in such manner that the balance can be readily segregated as between balances in United States currency and the balances in each foreign currency.

(a) Record here the cost of short-term investments such as special deposits and United States Government securities, any other temporary cash investments, and the allowance for unrealized gain or loss on current marketable equity securities.

(b) Special deposits for more than one year, not offset by current liabilities, shall not be included in this account but in account 1550 Special Funds.

(c) This account should be charged or credited for discount or premium on United States Government securities or other securities which should be amortized to profit and loss account 80 Interest Income.

(a) Record here current notes receivable including those from associated companies, company personnel, and all other sources.

(b) Balances of notes payable to associated companies shall not be offset against amounts carried in this account. Balances with associated companies which are not normally settled currently shall not be included in this account but in balance sheet account 1510.3 Advances to Associated Companies.

(a) Record here current accounts receivable including those due from the United States Government, foreign governments, associated companies, company personnel, and other amounts due for the performance of air transportation.

(b) Amounts due from the United States Government shall be maintained in such fashion as will clearly and separately identify service mail pay receivables, subsidy receivables and other than mail transportation receivables.

(c) Amounts due for the performance of air transportation shall include gross amounts due whether settled through airline clearing houses or with individual carriers. Amounts payable collected as agent shall not be credited to this account, but should be included in account 2190 Other Current Liabilities.

(d) Balances payable to associated companies shall not be offset against amounts carried in this account. Balances with associated companies which are not normally settled currently shall not be included in this account but in balance sheet account 1510.3 Advances to Associated Companies.

(a) Record here accruals for estimated losses from uncollectible accounts.

(b) All accounts against which allowances have been established shall be examined quarterly for the purpose of redetermining the basis of accruals to be applied to subsequent accounting periods and the reasonableness of allowances already provided.

(a) Record here the cost of:

(1) Flight equipment replacement parts of a type which ordinarily would be recurrently expended and replaced rather than repaired and reused;

(2) Unissued fuel inventories for use in the overall or system operations of the carrier. Adjustments of inventories for aircraft fuel due to retroactive price increases and decreases shall not be entered in this account but in profit and loss account 45, Aircraft Fuels and Oils; and

(3) Unissued and unapplied materials and supplies held in stock such as unissued shop materials, expendable tools, stationery and office supplies, passenger service supplies, and restaurant and food service supplies.

(b) Costs paid by the air carrier such as transportation charges and customs duties; excise, sales, use and other taxes; special insurance; and other charges applicable to the cost of spare parts and supplies shall be charged to this account when they can be definitely allocated to specific items or units of property. If such costs cannot be so allocated, or if of minor significance in relation to the cost of such property, such amounts may be charged to balance sheet account 1890 Other Assets and Deferred Charges and cleared either by a suitable “loading charge” as the parts are used or by current charges to appropriate expense or property accounts; so long as the method of application does not cause material distortion in operating expenses from one accounting period to another.

(c) Reusable spare parts and supplies recovered in connection with construction, maintenance, or retirement of property and equipment shall be included in this account at fair and reasonable values but in no case shall such values exceed original cost. Recoveries of normally reparable and reusable parts of a type for which losses in value may be covered on a practical basis through valuation allowance provisions shall be included in this account on an original cost basis. Scrap and nonusable parts, expensed from this account and recovered, shall be included at net amounts realizable therefrom with contra credit to the expense accounts initially charged.

(d) The cost of rotable parts and assemblies of material value included in this account which ordinarily are repaired and reused and possess a service life approximating that of the primary property types to which related shall not be recorded in this account but in balance sheet account 1608 Flight Equipment Rotable Parts and Assemblies. For purposes of identifying rotable parts and assemblies of insignificant unit value which may be included in this account, a reasonable maximum unit value limitation may be established.

(e) Any losses sustained or gains realized upon the abandonment or other disposition of flight equipment expendable parts shall be taken up as capital gains or losses in the periods in which sustained or realized. (See balance sheet account 1311.)

(f) Items in this account shall be charged to appropriate expense accounts as issued for use. Profit and loss on sales of inventory items as a routine service to others shall be included in profit and loss accounts 14 General Service Sales—Associated Companies, or 16 General Service Sales—Outside, and the parts sold shall be removed from this accounts at full cost.

(g) Materials and supplies held in small supply and purchased currently may be charged to appropriate expense accounts when purchased.

(h) An allowance for inventory adjustment applicable to materials and supplies is prohibited. Items in this account shall be charged to appropriate expense accounts as issued for use.

(i) Subaccounts shall be established within this account for the separate recording of each class or type of spare parts and supplies.

(a) Accruals shall be made to this account when allowances are established for losses in the value of expendable parts. The accruals to this account shall be made by charges to profit and loss account 73 Provisions for Obsolescence and Deterioration—Expendable Parts. Records shall be maintained with sufficient detail to permit association of the allowances with each class or type of expendable parts.

(b) The accruals to this account shall be based upon a predetermination by the air carrier of that portion of the total inventory of each class and type of expendable parts against which an allowance for loss is to be accrued. Expendable parts issued for use in operations shall be charged to operating expenses as issued and shall not be charged to this account. If at the end of any calendar year the amount of the allowance exceeds the product of the applicable inventory for the year determined consistently on a year-end or average basis, and the sum of the standard percentage accrual rates for all prior years including the current, the allowance shall be adjusted downward by the amount of the excess. Such adjustments shall be charged to this account and credited to profit and loss account 73 Provisions for Obsolescence and Deterioration—Expendable Parts.

(c) Where changing conditions necessitate a revision or adjustment in rates of accrual, such revision or adjustment shall be made applicable to current and subsequent accounting periods and shall not be applied retroactively to prior accounting periods. Following retirement of airframe or aircraft engine types to which related, any balance remaining in this account shall be offset against related balances carried in balance sheet account 1300 Spare Parts and Supplies and the net cleared to profit and loss accounts 88.5 Capital Gains and Losses—Operating Property or 88.6 Capital Gains and Losses—Other.

Record here prepayments of obligations which if not paid in advance would require the expenditure of working capital within one year, such as prepaid rent, insurance, taxes, interest, etc. Unexpired insurance and miscellaneous prepayments applicable to periods extending beyond one year where significant in amount shall be charged to balance sheet account 1820 Long-Term Prepayments.

Record here current assets not provided for in balance sheet accounts 1010 to 1410, inclusive.

(a) Record here net investments in associated companies.

(b) [Reserved]

(c) This account shall be subdivided by all air carrier groups as follows:

Record here notes and accounts receivable not due within one year, investments in securities issued by others, investments in leveraged leases, the noncurrent net investment in direct financing and sales-type leases, and the allowance for unrealized gain or loss on noncurrent marketable equity securities. Securities held as temporary cash investments shall not be included in this account but in balance sheet account 1100 Short-Term Investments. Investments in and receivables from associated companies which are not settled currently shall be included in balance sheet account 1510 Investments in Associated Companies.

Record here special funds not of a current nature and restricted as to general availability. Include items such as sinking funds, cash and securities posted with courts of law, employee's funds for purchase of capital stock, pension funds under the control of the air carrier and equipment purchase funds.

(a) Record here the total cost to the air carrier of airframes of all types and classes together with the full complement of instruments, appurtenances and fixtures comprising complete airframes including accessories necessary to the installation of engines and flight control and transmission systems, except as specifically provided otherwise in accounts 1602 and 1607. Also record here in separate subaccounts the costs of airframes overhauls accounted for on a deferral and amortization basis.

(b) Airframes designed to permit multiple payload configurations shall be recorded in this account at the total cost of the maximum complement of instruments, appurtenances, and fixtures used in the air carrier's operations.

(c) This account shall be subdivided as follows by all air carriers:

(a) Record here the total cost to the air carrier of complete units of aircraft engines of all types and classes together with a full complement of accessories, appurtenances, parts and fixtures comprising fully assembled engines as delivered by the engine manufacturer ready for operation in test but without the accessories necessary to its installation in airframes. Also record here in separate subaccounts the costs of aircraft engine overhauls accounted for on a deferral and amortization basis.

(b) This account shall be subdivided as follows by all air carriers:

Record here the total cost incurred by the air carrier for modification, conversion or other improvements to leased flight equipment. Also record here, in separate subaccounts, the costs of airframe and aircraft engine overhauls of leased aircraft accounted for on a deferral and amortization basis.

(a) Record here the total cost to the air carrier of all spare instruments, parts, appurtenances and subassemblies related to the primary components of flight equipment units provided for in balance sheet accounts 1601 through 1607, inclusive. This account shall include all parts and assemblies of material value which are rotable in nature, are generally reserviced or repaired, are used repeatedly and possess a service life approximating that of the property type to which they relate. Items of an expendable nature which generally may not be repaired and reused, shall not be recorded in this account but in account 1300 Spare Parts and Supplies. Except for recurrent service sales, flight equipment parts recorded in this account shall not be charged to operating expenses as retired. Profit or loss on sales of parts as a routine service to others shall be included in profit and loss account 14 General Service Sales, and parts sold shall be removed from this account at full cost irrespective of any allowance for depreciation which has been provided.

(b) This account shall be subdivided as follows by Group II and Group III air carriers:

This classification is established only for purposes of control by the BTS and shall reflect the total cost of property and equipment of all types and classes used in the in-flight operations of aircraft.

(a) Record here accumulated provisions for overhauls of flight equipment.

(b) Separate subaccounts shall be established for recording accumulated provisions related to each type of airframe and aircraft engine, respectively.

Record here the total cost to the air carrier of ground equipment to include the following:

(a) Equipment assigned to aircraft or active line operations as opposed to items held in stock for servicing passengers such as broilers, bottleware, dishes, food boxes, thermos jugs, blankets, first aid kits, etc. Spare items shall be carried in balance sheet account 1300 Spare Parts and Supplies and shall be charged directly to expense upon withdrawal from stock for replacing original complements.

(b) Equipment used in restaurants and kitchens.

(c) Equipment of all types and classes used in enplaning and handling traffic and in handling aircraft while on ramps, including motorized vehicles used in ramp service. Classes of equipment used interchangeably between handling aircraft on ramps and in maintaining aircraft may be classified in accordance with normal predominant use.

(d) Nonairborne equipment of all types and classes used in meteorological and communication services which is not a part of buildings.

(e) Equipment of all types and classes including motorized vehicles used in engineering and drafting services and in maintaining, overhauling, repairing and testing other classes of property and equipment.

(f) Property and equipment of all types and classes used in ground and marine transportation services.

(g) Property and equipment of all types and classes used in storing and distributing fuel, oil and water, such as fueling trucks, tanks, pipelines, etc.

(h) All other ground equipment of all types and classes such as medical, photographic, employees' training equipment, and airport and airway lighting equipment.

Record here the total cost to the air carrier of furniture, fixtures and office equipment of all types and classes wherever used or located.

Record here the total cost to the air carrier incurred in connection with modification, conversion, or other improvements to leased buildings and equipment.

Record here the total cost to the air carrier of owned buildings, structures and equipment and related improvements. Each air carrier shall maintain the following subaccounts in which the values fairly assignable to maintenance and other operations shall be separately recorded:

This classification is established only for purposes of control by the BTS and shall reflect the total cost of property and equipment of all types and classes other than flight equipment, equipment purchase deposits and advance payments, land, and work in progress.

(a) Record in accounts 1611 and 1618, inclusive, and 1650 through 1660, inclusive, accruals for depreciation of flight equipment and ground property and equipment.

(b) As set forth in section 3, Chart of Balance Sheet Accounts, separate accounts shall be established for depreciation allowances to parallel balance sheet accounts 1601 through 1608 established for recording the cost of flight equipment and accounts 1630 through 1640 established for recording the cost of ground property and equipment.

(c) This account shall be used as a control account and shall reflect the total amounts recorded in balance sheet accounts 1611 through 1618 and 1650 through 1660 in addition to account 1629 Flight Equipment Airworthiness Allowance.

Record here the initial cost and the cost of improving land.

Record here the amount of purchase deposits and advance payments made to acquire operating property and equipment under outstanding purchase commitments. Funds set aside but not deposited or used as advance payments should not be included in this account but in Account 1550 Special Funds.

(a) Record here all direct and indirect costs of the air carrier that are expended for constructing and readying property and equipment of all types and classes for installation in operations. The amount reported shall reflect all such expenses that are accumulated to the balance sheet date. Where properly includable in the property and equipment classification, record here also the accumulated costs for uncompleted overhauls of airframes, aircraft engines, or other material units of property.

(b) At the option of the air carrier this account may be used as a clearing account for recording the cost of property and equipment acquisitions prior to a distribution thereof to the appropriate property accounts, whether or not conditioning or modification is necessary before placing in service.

(a) Record here the total costs to the air carrier for all property obtained under capital leases.

(b) This account shall be subdivided by all air carrier groups as follows:

(a) Record here accruals for amortization of leased property obtained under capital leases.

(b) This account shall be subdivided by all air carrier groups as follows:

The total cost to the air carrier of nonoperating property and equipment and related allowances for depreciation shall be recorded in balance sheet accounts 1701 through 1796 which, as set forth in section 3, Chart of Balance Sheet Accounts, parallel balance sheet accounts 1601 through 1689, for recording the cost of operating property and equipment. In addition to these accounts, Account 1797 has been established for recording the cost of property on operating-type leases to others and property held for lease; any accumulated depreciation applicable to the assets contained in Account 1797 shall be recorded in Account 1798.

Record here the total cost to the air carrier of property on operating-type lease to others and property held for lease.

Record here accruals for depreciation of property on operating-type leases to others and property held for lease.

Record here prepayments of obligations applicable to periods extending beyond one year such as payments on leased property and equipment and other payments and advances for rents, rights, or other privileges.

(a) Record here costs accumulated and deferred by the air carrier pertaining to the development of new routes or extension of existing routes, preparation for operation of new routes subsequent to certification by the DOT, the integration of new types of aircraft or services, and other preparations for substantial alterations in operational characteristics.

(b) Costs chargeable to this account shall include items directly related to each specific developmental or preoperating project, such as travel and incidental expenses, legal expenses, flight crew training expenses, and regulatory proceedings expenses. Expenses which would be otherwise incurred in the normal air transport operations conducted by the air carrier during the current accounting period shall not be allocated to developmental or preoperating projects and charged to this account. Nor shall this account be credited for revenues from aircraft flights of a developmental or preoperating character the operating costs of which are charged to this account. Any such revenues shall be included in the profit and loss account for the respective type of revenue. This account shall include charges for only those costs associated with projects directed at obtaining new operating authority or expanding the physical capacity of the air carrier and shall not include costs incurred for the purpose of generating revenues through rate adjustment. Accordingly, costs associated with regulatory proceedings involving route awards or amendments, whether successful or unsuccessful to the carrier, shall be included in this account whereas costs associated with regulatory proceedings involving rate or other revenue generation matters shall be charged to appropriate expense accounts.

(c) Records shall be established for new routes or extensions of existing routes to record separately: (1) Costs incurred in acquiring or applying for the routes, including all costs incurred prior to certification by the DOT and inauguration of service by the air carrier, and (2) costs incurred after revenue operations begin over the new routes or extensions.

(d) Subclassifications shall be established to record for each developmental project the period covered and the purpose of each item of expense. Each air carrier shall classify the costs of all projects included in this account between: (1) Those related and contributing to the normal air transportation services currently conducted by the air carrier; (2) those related to services conducted by the air carrier which are extraneous to or are not otherwise related to the air transportation services currently conducted; and (3) those held in suspense pending status determination in terms of possible contribution to the air transportation services and inauguration of the service or operation to which related.

(e) Amounts included in this account which contribute to or protect the position of the normal air transportation services currently conducted by the carrier shall be amortized to profit and loss account 74 Amortization, unless otherwise approved or directed by the DOT. Other amounts included in this account shall be amortized or charged to profit and loss account 89.9 Other Miscellaneous Nonoperating Debits.

(a) Record here other assets and deferred charges not provided for elsewhere.

(b) Record here debits, the proper final disposition of which cannot be determined until additional information has been received. This account shall include the accumulated cost of labor, materials and outside services used in the process of manufacturing flight equipment expendable parts and materials and supplies for stock, the accumulated cost of jobs in process for others, projects to be charged to expense upon completion. This account shall also include unamortized debt expense, property acquisition adjustments and intangible assets.

(c) This account shall be charged with property loss and other costs related to casualties and credited with recoveries from purchased insurance and salvage. A debit or credit balance in this account related to property retired as a result of a casualty shall be recorded in profit and loss account 88.5 Capital Gains and Losses—Operating Property or 88.6 Capital Gains and Losses—Other; however, any balances related to property not retired or to other casualties shall be recorded in profit and loss account 58 Injuries, Loss and Damage. Proceeds from purchased insurance for property damage, received prior to repair of such damage, shall not be credited to this account but to balance sheet account 2390 Other Deferred Credits pending repair. The records for each major casualty shall be kept in such manner as to clearly disclose insurance recoveries and the total costs, which shall include charges for the depreciated cost of property damaged or destroyed, costs for clearing wrecks and damaged property and equipment, including salaries and wages for the repair thereof, and payments for damages to property of others. The cost of casualties shall not be charged directly against retained earnings or appropriations thereof, but shall be cleared through the applicable profit and loss accounts in accordance with the foregoing.

(d) Record here the unamortized debt expense related to the assumption by the air carrier of debt of all types and classes. Amounts recorded shall be amortized to profit and loss account 84 Amortization of Debt Discount, Premium and Expense.

(e) Unamortized debt expense shall not include the excess of the par value of debt securities over the cash value of consideration received. Instead, discounts shall be recorded in a subaccount of the related liability.

(f) Record here the cost of patents, copyrights and other intangible properties, rights and privileges acquired as a part of a business from other air carriers and other intangibles not provided for elsewhere. This account shall be subdivided to reflect the nature of each intangible asset included in this account.

(g) Record here the difference between the purchase price to the air carrier of property and equipment acquired as a part of a business from another air carrier through consolidation, merger, or reorganization, pursuant to a plan approved by the DOT, and the depreciated cost to the predecessor company at date of acquisition. Record here also such differences relating to purchases of property and equipment from associated companies unless other treatment is approved by the BTS. Separate subaccounts shall be established to record the amounts applicable to each such acquisition.

(h) Balances in this account relating to property acquisition adjustments shall be amortized by charges to profit and loss account 89.9 Other Miscellaneous Nonoperating Debits unless otherwise directed or approved by the BTS.

Record here the face value or principal amount of debt securities issued or assumed by the air carrier which is payable within 12 months of the balance sheet date unless such debt is to refinance, or where payment is to be made from assets of a type not properly classifiable as current.

Record here the face value of all notes, drafts, acceptances, or other similar evidences of indebtedness payable on demand or within one year to a bank or another financial institution with the exception of current maturities of long-term debt which should be included in account 2000.

Record here the face value of all notes, drafts, acceptances, or other similar evidences of indebtedness payable on demand or within one year to an associated company or party other than a financial institution.

Record here all accounts payable within one year which accrued from generally recognized trade practices.

Record here all accounts payable within one year which are not provided for in accounts 2000 to 2021, inclusive.

Record here the total current liability applicable to property obtained under capital leases.

Record here amounts accrued for unpaid compensation to personnel, which have been charged to profit and loss or capitalized, as compensation for the period in which accrued.

(a) Record here accruals of liabilities for personnel vacations. All vacation policies, plans, or agreements whether oral or written shall be accounted for on an accrual basis whenever a lag exists between vacations earned and vacations taken, thereby resulting in a liability against the carrier under the applicable policy, plan or agreement.

(b) This account shall be credited and the applicable personnel compensation expense account concurrently charged with the cost of any lag between vacations accrued and vacations taken. Accruals may be based upon standard rates of lag, if such standard rates are verified by physical inventory and adjusted accordingly at least once each calendar year. Adjustments of balances in this account shall be cleared to applicable compensation expense accounts.

Record here interest payable within one year for all outstanding obligations.

(a) Record here accruals for currently payable income and other forms of taxes which constitute a charge borne by the air carrier as opposed to those collected as an agent for others.

(b) Each air carrier shall disclose in the footnotes of its BTS Form 41 for each calendar quarter whether utilized credits are accounted for by the flow-through method or the deferred method. The method selected shall be consistently followed by the carrier.

Record here in separate subdivisions for each class and series of capital stock, all dividends declared but unpaid on capital stock.

(a) Record here balances representing the value of unused transportation sold. Transportation sold includes both sales for transportation to be provided by the air carrier and transportation to be provided by another air carrier.

(b) Earned revenue, determined by the yield or average fare method or by the sales-lift-match method, shall be consistently and periodically cleared by debit to this account, and by credit to the appropriate profit and loss revenue account. Amounts receivable for transportation to be provided by the air carrier shall be debited to balance sheet account 1270 Accounts Receivable.

(c) Carriers who determine earned revenue on a yield or average fare method may not accrue income during the accounting year in anticipation of a favorable annual physical inventory determination, nor for unused or unpresented tickets.

(d) Subaccounts to this account shall be established to record balances pertaining to passenger and cargo transportation sold, respectively, and separately to sales in scheduled and non-scheduled services.

Record here current and accrued liabilities, including amounts payable collected as an agent, not provided for in accounts 2110 to 2160, inclusive.

(a) Record here the face value of principal amount of debt securities issued or assumed by the air carrier and held by other than associated companies, which has not been retired or cancelled and is not payable within 12 months of the balance sheet date.

(b) In cases where debt coming due within 12 months is to be refunded, or where payment is to be made from assets of a type not properly classifiable as current, the amount payable shall not be removed from this account. In addition, this account shall include short-term debt obligations when both the intent to refinance the short-term obligations on a long-term basis is established and the ability to consummate this refinancing can be demonstrated.

Record here net amounts due associated companies and nontransport divisions for notes, loans and advances which are not settled currently. Balances payable to and receivable from different associated companies shall not be offset.

Record here the liability of the air carrier under employee pension plans, to which either or both employees and the air carrier contribute, if the plan is administered by the air carrier.

Record here the total noncurrent liability applicable to property obtained under capital leases.

Record here noncurrent liabilities not provided for in balance sheet accounts 2210 to 2280, inclusive, such as the liability for installments received on capital stock from company personnel who are not bound by legally enforceable subscription contracts, accruals for personnel dismissal liability, and accruals of other demonstrable miscellaneous noncurrent liabilities.

Record here credits and debits representing the net tax effect of material timing differences originating and reversing in the current accounting period, giving appropriate recognition to the portion of investment tax credits which would have been allowed if taxes were based on pretax accounting income by a reduction of the deferred tax provision.

Record here investment tax credits utilized as reduction of tax liabilities, when the carrier exercises the option to defer such credits for amortization over the service life of the related equipment.

Record here credits, not provided for elsewhere, the proper final disposition of which cannot be effected until additional information has been received.

Record here in separate subdivisions for each class and series, the par or stated value of preferred capital stock issued or in the case of no-par stock without stated value, the full consideration received.

Record here in separate subdivisions for each class and series, the par or stated value of common stock issued or in case of no-par stock without stated value, the full consideration received.

Record here in separate subdivisions for each class and series, the par or stated value, or the subscription price in the case of stock without par or stated value, of legally enforceable subscriptions to the capital stock of the air carrier.

(a) Record herein separate subdivisions for each class and series, the difference between the price at which capital stock is sold and the par or stated value of the stock; gains or losses arising from the reacquisition and the resale or retirement of each class and series of capital stock; donations; the excess of retained earnings capitalized over par or stated value of capital stock issued; adjustments in capital resulting from reorganization or recapitalization; and proceeds attributable to detachable stock purchase warrants related to debt issues. This account shall also include balances of contributions to the business enterprise of individual proprietors or partners.

(b) Each air carrier shall maintain the following subaccounts:

(a) Record here the net income or loss from operations of the air carrier and dividends declared on capital stock.

(b) This account shall not be charged with dividends on treasury stock. If a dividend is not payable in cash, the values entered in this account shall be completely described.

(c) Delayed credits or charges to income shall not be entered in this account directly but in appropriate profit and loss accounts.

(d) Net income or loss accounted for during the current fiscal year shall not be entered in this account until the close of the fiscal year. Individual proprietorships or partnerships may clear net income or loss accounted for during the year directly to balance sheet account 2890 Additional Capital Invested, or optionally, to this account for subsequent transfer to balance sheet account 2890 Additional Capital Invested.

(e) A separate subaccount to this account shall be maintained to record changes in the valuation of marketable equity securities included in noncurrent assets. Such changes shall be reflected in this subaccount to the extent the balance in this subaccount represents a net unrealized loss as of the current balance sheet date.

(a) Record here the cost of capital stock issued by the air carrier reacquired by it and not retired or canceled.

(b) Separate records shall be established for each class and series of capital stock held in this account.

(a) The profit and loss accounts are designed to reflect, through natural groupings, the elements entering into the derivation of income or loss accruing to the proprietary interests during each accounting period.

(b) The prescribed system of accounts provides for the co-ordinate grouping of all revenues and expenses in terms of both major natural objectives and functional activities and for subdivision of both to provide varying degrees of detail for air carriers of differing accounting capacities and/or requirements.

(c) The detailed objective accounts established for each air carrier group, by the dual subdivision of profit and loss elements in terms of both natural objectives and functional activities, are set forth in section 7, Chart of Profit and Loss Accounts.

(d) The prescribed system of accounts provides generally that profit and loss elements shall be grouped in accordance with their inherent characteristics within the following primary classifications:

(1) Operating revenues. (i) This primary classification shall include revenues of a character usually and ordinarily derived from the performance of air transportation and air transportation-related services, which relate to services performed during the current accounting year, and adjustments of a recurrent nature applicable to services performed in prior accounting years.

(ii) Operating revenues shall be subclassified in terms of functional activities as provided in section 9.

(2) Operating expenses. (i) This primary classification shall include expenses of a character usually and ordinarily incurred in the performance of air transportation and air transportation-related services, which relate to services performed during the current accounting year, and adjustments of a recurring nature attributable to services performed in prior accounting years.

(ii) Operating expenses shall be subclassified in terms of functional activities as provided in sections 10 and 11.

(3) Nonoperating income and expense—net. This primary classification (8100) shall include income and loss incident to commercial ventures not inherently related to the performance of the common carrier air transport services of the accounting entity; other revenues and expenses attributable to financing or other activities which are extraneous to and not an integral part of air transportation or its incidental services; and special recurrent items of a nonperiod nature.

(4) Income taxes for current period. This primary classification (9100) shall include provisions for Federal, state, local, and foreign taxes which are based upon the net income of the air carrier for the current period together with refunds for excess profits credits or carryback of losses and increases or reductions of income taxes of prior years of a magnitude which will not distort net income of the current accounting year. Income taxes applicable to special income credits or debits recorded in profit and loss classification 9700 Extraordinary Items, and other material income tax items not allocable to income of the current accounting year, shall not be included in this classification but in profit and loss classification 9700 Extraordinary Items.

(5) Discontinued operations. This primary classification (9600) shall include earnings and losses of discontinued nontransport operations and gains or losses from the disposal of nontransport operations the result of which are customarily accounted for through profit and loss objective accounts 86, 87 and 88.2.

(6) Extraordinary items. This primary classification (9700) shall include material items characterized by their unusual nature and infrequent occurrence.

(7) Cumulative effect of changes in accounting principles. This primary classification (9800) shall include the cumulative effect of material changes in accounting principles.

This classification is prescribed for all air carrier groups and shall include all revenues from the air transportation of traffic of all classes. It shall consist of the following subclassifications:

(a) This classification is prescribed for all air carrier groups and shall include all revenues from the United States Government as direct grants or aids for providing air transportation facilities and all revenues from services which grow from and are incidental to the air transportation services performed by the air carrier.

(b) Revenues related to services of a magnitude or scope beyond an incidental adjunct to air transportation services shall not be included in this classification (see section 1-6(b)). Revenues applicable to such services shall be included in profit and loss classification 8100, Nonoperating Income and Expense-Net, and the accounting modified to conform with that of a nontransport division whether or not the service is organized as a nontransport division.

(a) This function shall include expenses incurred directly in the in-flight operation of aircraft and expenses attaching to the holding of aircraft and aircraft operational personnel in readiness for assignment to an in-flight status.

(b) This function shall not include expenses incurred in repairing, servicing or storing aircraft, expenses incurred on the ground in protecting and controlling the inflight movement of aircraft, or the compensation of ground personnel and other expenses incurred in scheduling or preparing aircraft or aircraft operational personnel for flight assignment. Such expenses shall be included in function 5400 Maintenance or function 6900 General Services and Administration.

(a) This function shall include all expenses, both direct and indirect, specifically identifiable with the repair and upkeep of property and equipment as may be required to meet operating and safety standards; in inspecting or checking property and equipment in accordance with prescribed operational standards; and in polishing or cleaning property and equipment when such polishing or cleaning is not an incidental routine in connection with the normal productive use of property and equipment.

(b) This function shall include the cost of direct labor, materials, and outside services and maintenances overhead or other costs specifically associated with maintenance operations regardless of the location at which incurred.

(c) This function shall not include costs incurred in the construction, improvement, or modification of property and equipment even when necessitated to meet new or changed operating or safety standards. Such costs shall be charged to appropriate property and equipment accounts.

(d) Costs incurred by aircraft handling personnel in visual inspection, minor check and servicing of aircraft, while in line service, shall not be included in this function when performed as an incidental routine during the normal productive use of aircraft but shall be included in function 6900 General Services and Administration.

(e) Each Group I air carrier shall maintain the following subfunctions:

This function shall include expenses incurred on the ground in controlling and protecting the in-flight movement of aircraft; landing, handling, or servicing aircraft on the ground; selling transportation; servicing and handling traffic of all classes; promoting the development of traffic; administering operations generally; and all other expenses not otherwise provided for in functions 5100 Flying Operations, 5400 Maintenance and 7000 Depreciation and Amortization.

This function shall include all charges to expense to record losses suffered through current exhaustion of the serviceability of property and equipment due to wear and tear from use and the action of time and the elements, which are not replaced by current repairs, as well as losses in serviceability caused by obsolescence, supersession, discoveries, change in demand or actions by public authority. It shall also include charges for the amortization of capitalized developmental and preoperating costs, leased property under capital leases and other intangible assets applicable to the performance of air transportation. (See sections 6-1696, 1830 and 1890.)

(a) This function shall include all expense items applicable to the generation of transport-related revenues included in section 9, Function 4800.

(b) Such expense related to services of a magnitude or scope beyond an incidental adjunct to air transportation services shall not be included in this function (see section 1-6(b)). Expenses applicable to the generation of such revenues shall be included in profit and loss classification 8100, Nonoperating Income and Expense-Net, and the accounting modified to conform with that of a nontransport division whether or not the service is organized as a nontransport division.

(c) This function shall also include expenses representing increases in costs incurred in common with the air transport service, to the extent such increases result from the added transport-related services, as well as a pro rata share of the costs incurred by the air carrier in operating facilities which are used jointly with others. As a general rule, this function shall not include those expenses, other than joint facilities costs, which would remain as an essential part of the air transport services if the transport-related services were terminated.

(a) This function shall include expenses incurred directly in the in-flight operation of aircraft and expenses attaching to the holding of aircraft and aircraft operational personnel in readiness for assignment to an in-flight status.

(b) This function shall not include expenses incurred in repairing, servicing or storing aircraft, expenses incurred on the ground in protecting and controlling the in-flight movement of aircraft, or compensation of ground personnel and other expenses incurred in scheduling or preparing aircraft or aircraft operational personnel for flight assignment. Such expenses shall be included in function 5400 Maintenance, or function 6400 Aircraft and Traffic Servicing.

(a) This function shall include all expenses, both direct and indirect, incurred in the repair and upkeep of property and equipment as may be required to meet operating and safety standards; in inspecting or checking property and equipment in accordance with prescribed operational standards; and in polishing or cleaning property and equipment when such polishing or cleaning is not an incidental routine in connection with the normal productive use of property and equipment.

(b) This function shall include the cost of direct labor, materials, and outside services and maintenance overhead or other costs associated with maintenance operations regardless of the location at which incurred.

(c) This function shall not include costs incurred in the construction, improvement, or modification of property and equipment even when necessitated to meet new or changed operating or safety standards. Such costs shall be charged to appropriate property and equipment accounts.

(d) Costs incurred by aircraft handling personnel in visual inspection, minor check and servicing of aircraft, while in line service, shall not be included in this function when performed as an incidental routine during the normal productive use of aircraft but shall be included in function 6400 Aircraft and Tariff Servicing.

(e) Both Group II air carriers and Group III air carriers shall maintain the following subfunctions:

This function shall include all expenses chargeable directly to activities contributing to the comfort, safety and convenience of passengers while in flight and when flights are interrupted. It shall not include expenses incurred in enplaning or deplaning passengers, or in securing and selling passenger transportation and caring for passengers prior to entering a flight status. Such expenses shall be included in functions 6400 Aircraft and Traffic Servicing and 6700 Promotion and Sales, respectively.

(a) This function shall include the compensation of ground personnel and other expenses incurred on the ground incident to the protection and control of the in-flight movement of aircraft, scheduling and preparing aircraft operational crews for flight assignment, handling and servicing aircraft while in line operation, servicing and handling traffic on the ground, subsequent to the issuance of documents establishing the air carrier's responsibility to provide air transportation, and in-flight expenses of handling and protecting all nonpassenger traffic including passenger baggage.

(b) This function shall include only those aircraft servicing and cleaning expenses which are incurred as an incidental routine during the normal productive use of aircraft in line operations. It shall not include expenses incurred in the repair and maintenance of property and equipment, or in checking or inspecting property and equipment in accordance with prescribed operational standards when such activities are not an incidental routine during the normal productive use of aircraft. Such expenses shall be included in function 5400 Maintenance.

(c) This function shall not include expenses incurred in securing traffic, arranging aircraft space for traffic sold or in issuing documents confirming traffic sales and establishing the air carrier's responsibilities to provide air transportation. Such expenses shall be included in function 6700 Promotion and Sales. However, for purposes of this system of accounts, expenses attributable to the operation of airport traffic offices, excluding reservation centers, shall be included in this function. Expenses attributable to the operation of reservation or aircraft space control centers shall be included in function 6700 Promotion and Sales regardless of the location at which incurred.

(d) Group III air carriers shall further subdivide this function as follows:

(a) This function shall include expenses incurred in creating public preference for the air carrier and its services; stimulating the development of the air transport market; and promoting the air carrier or developing air transportation generally.

(b) It shall also include the compensation of personnel and other expenses incident to documenting sales; expenses incident to controlling and arranging or confirming aircraft space for traffic sold; expenses incurred in direct sales solicitation and selling of aircraft space; and expenses incurred in developing tariffs and schedules for publication.

(c) This function shall not include expenses incurred in handling traffic subsequent to the issuance of documents establishing the air carrier's responsibility to provide air transportation which shall be included in functions 5500 Passenger Service and 6400 Aircraft and Traffic Servicing. However, for purposes of this system of accounts, expenses attributable to the operation of airport traffic offices, excluding reservation centers, shall be included in function 6400 Aircraft and Traffic Servicing. Expenses attributable to the operation of reservation or aircraft space control centers shall be included in function 6700 Promotion and Sales regardless of the location at which incurred.

(d) Group III air carriers shall subdivide this function as follows:

(a) This function shall include expenses of a general corporate nature and expenses incurred in performing activities which contribute to more than a single operating function such as general financial accounting activities, purchasing activities, representation at law, and other general operational administration, which are not directly applicable to a particular function.

(b) This function shall not include expenses incurred directly in promoting traffic or in promoting relations of the air carrier generally with the public which shall be included in function 6700 Promotion and Sales. Nor shall this function include expenses, regularly applicable in large part to a specific function, which contribute only incidentally, or in small amount, to various other functions. Such expenses when of such size as will not distort the function to which predominantly related, shall be included in the specific function to which regularly related. However, expenses of a general administrative character and of significant amount regularly contributing to operating functions generally shall be included in this function.

This function shall include all charges to expense to record losses suffered through current exhaustion of the serviceability of property and equipment due to wear and tear from use and the action of time and the elements, which are not replaced by current repairs, as well as losses in serviceability occasioned by obsolescence, supersession, discoveries, change in popular demand or action by public authority. It shall also include charges for the amortization of capitalized developmental and preoperating costs, leased property under capital leases, and other intangible assets applicable to the performance of air transportation. (See sections 6-1696, 1830 and 1890.)

(a) This function shall include all expense items applicable to the generation of transport-related revenues included in section 9, Function 4800.

(b) Such expense related to services of a magnitude or scope beyond an incidental adjunct to air transportation services shall not be included in this function (see section 1-6(b)). Expenses applicable to the generation of such revenues shall be included in profit and loss classification 8100, Nonoperating Income and Expense-Net, and the accounting modified to conform with that of a nontransport division whether or not the service is organized as a nontransport division.

(c) This function shall also include expenses representing increases in costs incurred in common with the air transport service, to the extent such increases result from the added transport-related services, as well as a pro rata share of the costs incurred by the air carrier in operating facilities which are used jointly with others. As a general rule, this function shall not include those expenses, other than joint facilities, costs, which would remain as an essential part of the air transport services if the transport-related services were terminated.

(a) Basic objective accounts, applicable to all air carrier groups, are established for recording all revenue and expense elements. These basic accounts are in certain areas subdivided to provide greater detail for indicated air carrier groups.

(b) Each air carrier shall credit the gross revenues accruing from services ordinarily associated with air transportation and transportation-related services to the appropriate account established for each revenue source. Expenses incident to transport and transport-related services shall be charged to the accounts established in this section in accordance with the objectives served by each expenditure. However, direct costs of forwarding traffic as a result of interrupted trips, and refunds of sales, shall be charged to the applicable revenue account.

(c) To the end that the integrity of the prescribed objective accounts shall not be impaired, each air carrier shall:

(1) Charge the appropriate account prescribed for each service purchased or expense element incurred expressly for the benefit of the air carrier regardless of whether incurred directly by the air carrier or through an agent or other intermediary, and (2) except as provided in objective account 77, Uncleared Expense Credits, credit or charge, as appropriate, the account prescribed for each expense element which may be involved in distributions of expenses between (i) separate operating entities of the air carrier, (ii) transport-related services and transport services, or transport functions, (iii) balance sheet and profit and loss elements, and (iv) the air carrier and others, when the expenses are incurred initially by or for the benefit of the air carrier. At the option of the air carrier, standard rates applicable to each objective account comprising a particular pool of expenses subject to assignment between two or more activities, may be established for proration purposes, provided the rates established are predicated upon the experience of the air carrier and are reviewed and modified as appropriate at least once each year.

(a) Record here revenue from the transportation of passengers by air, including infants transported at reduced fares, berth charges, surcharges for premium services and other similar charges. Revenue from airline employees, officers and directors, or other persons, except for ministers of religion, who are traveling under reduced-rate transportation authorized by 49 U.S.C. 41511(a) and 14 CFR part 223, as well as revenue from travel agents, cargo agents and tour conductors traveling at reduced fares, and revenues from service charges for passengers traveling on a nonrevenue basis shall be recorded in objective account 19 Air Transport—Other.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here revenue from the transportation by air of both United States and foreign mail.

(b) Fines and penalties imposed by the United States Government and foreign governments in connection with the carriage of mail shall not be charged to this account but to profit and loss account 89.9 Other Miscellaneous Nonoperating Debits.

(c) This account shall be subdivided as follows by all air carrier groups:

(a) Record here revenue from the transportation by air of property including excess passenger baggage.

(b) Revenues resulting from services incidental to the transportation services such as collection of shipper's interest insurance premiums and charges and fees for service such as pick-up and delivery, assembly and distribution, storage and handling, and C.O.D. collection shall not be credited to this account but to profit and loss account 17 Air Cargo Services.

(c) This account shall be subdivided as follows by all air carrier groups:

(a) Record here the revenue from nonscheduled air transport services (except as otherwise required by profit and loss Account 86 Income from Nontransport Ventures) where the party receiving the transportation obtains exclusive use of an aircraft at either published tariff or other contractual rates and the remuneration paid by the party receiving transportation accrues directly to, and the responsibility for providing transportation is that of, the accounting air carrier. This account shall also include revenues from air transport services other than inter-airport services, whether scheduled or nonscheduled, where each passenger or shipment receiving transportation is individually documented and does not obtain exclusive use of an aircraft.

(b) This account shall not include revenues or fees received from other air carriers for flight facilities furnished or operated by the accounting air carrier where the remuneration paid by the party receiving transportation accrues directly to, and the responsibility for providing transportation is that of other air carriers. Such revenues and related expenses shall be included in profit and loss accounts 11, Rents; 13, Interchange Sales; or 18, Other Transport-Related Revenues and Expenses.

(c) This account shall be subdivided as follows by all air carrier groups:

Record here amounts of compensation received pursuant to the provisions of 49 U.S.C. 41733 under rates established by the Department of Transportation for the provision of essential air service to small communities.

(a) Record here revenues from and expenses related to transport-related services performed while in flight.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here revenues from and expenses related to the operation of restaurants and similar facilities, and from sales of food. (See section 12-51.)

(b) This account shall be subdivided as follows by all air carrier groups.

(a) Record here revenues from and expenses related to property and equipment owned or leased which has been rented or subleased to others exclusive of associated companies. This account shall not include fees from the use by others of air carrier aircraft under aircraft interchange agreements.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here revenues from and expenses related to the operation of passenger limousine surface transportation services.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here the revenues or fees from and the expenses related to services provided associated companies and other than associated companies by the air carrier under aircraft interchange agreements. This account shall be charged and the applicable operating expense objective accounts shall be credited, except as provided in operating expense objective account 77, Uncleared Expense Credits, with the expenses attaching to services provided all companies under aircraft interchange agreements.

(b) This account shall not include revenues or expenses related to air transportation services performed in the name of and for the account of the accounting air carrier. Such revenues shall be included in applicable transport revenue and operating expense objective accounts.

(c) This account shall be subdivided as follows by all air carrier groups:

(a) Record here the revenues, commissions or fees from and expenses related to other than air transportation and aircraft interchange services provided to associated and outside companies by the air carrier. This account shall include the contractual fees or other revenues from and expenses related to services provided to associated and other companies in the operation of facilities which are used jointly with associated and other companies as well as revenues from and the costs related to the sale of supplies, parts and repairs sold directly or furnished as a part of services to associated and other companies.

(b) This account shall not include consideration received from sales of property, equipment, materials or supplies when disposed of as a part of a program involving retirement of property and equipment as opposed to routine sales and services to associated and other companies unless such disposition is conducted as a normal part of the incidental sales activity. Such retirement gain or loss shall be included in capital gains and losses accounts. Maintenance parts, materials or supplies sold as a service to others shall be charged to this account at cost without adjustment of related obsolescence or depreciation allowances.

(c) This account shall be subdivided as follows by all air carrier groups:

(a) Record here revenues from and expenses related to substitute service. This account shall include as revenues all monies received from substitute carriers and as expense all monies paid to substitute carriers.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here fees and other revenues from and expenses related to incidental services performed in connection with cargo shipments such as pickup and delivery fees, shipper's interest insurance charges, storage and handling fees, etc.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here revenues from and expenses related to transport-related services not provided for in profit and loss accounts 10 through 17, inclusive, such as revenues and expenses incident to the operation of flight facilities by the accounting air carrier, except those operated under aircraft interchange agreements, where the remuneration paid by the party receiving transportation accrues directly to, and the responsibility for providing transportation is that of, other air carriers; and the revenues and expenses incident to vending machines, parcel rooms, storage facilities, etc.

(b) [Reserved]

(c) Revenues from the renting or leasing of property and equipment to others shall not be included in this account but in profit and loss account 11 Rents.

(d) This account shall be subdivided as follows by all air carrier groups:

(a) Record here revenues associated with air transportation conducted by the air carrier, not provided for in profit and loss accounts 01 through 09, inclusive, such as revenue from (1) airline employees, officers and directors, or other persons, except for ministers of religion, who are traveling under reduced-rate transportation authorized by 49 U.S.C. 41511(a) and 14 CFR part 223, as well as travel agents, cargo agents and tour conductors traveling at reduced fares, (2) service charges for failure to cancel or for late cancellation of air transportation reservations, and (3) nontransportation service charges collected on both revenue and nonrevenue flights.

(b) Revenues derived from sightseeing, aerial photography, advertising, or other special flights shall not be included in this account but in account 07 Charter.

(c) This account shall be subdivided as follows by all air carrier groups:

(a) Each element of expense ordinarily associated with air transportation services shall be charged to the accounts established in this section in accordance with the objectives served by each expenditure. Basic objective accounts, applicable to all air carrier groups, are established for recording all expense elements. These basic accounts are in certain areas subdivided to provide greater detail for indicated air carrier groups.

(b) To the end that the integrity of the prescribed objective accounts shall not be impaired, each air carrier shall:

(1) Charge the appropriate account prescribed for each service purchased or expense element incurred expressly for the benefit of the air carrier regardless of whether incurred directly by the air carrier or through an agent or other intermediary, and (2) except as provided in objective account 77 Uncleared Expense Credits, credit or charge, as appropriate, the account prescribed for each expense element which may be involved in distributions of expenses between (i) separate operating entities of the air carrier, (ii) incidental and transport services or transport functions, (iii) balance sheet and profit and loss elements and (iv) the air carrier and others, when the expenses are incurred initially by or for the benefit of the air carrier. At the option of the air carrier, standard rates applicable to each objective account comprising a particular pool of expenses subject to assignment between two or more activities, may be established for proration purposes, provided the rates established are predicated upon the experience of the air carrier and are reviewed and modified as appropriate at least once each year.

Record here the compensation, including vacation and sick leave pay, of general officers and supervisors, and immediate assistants regardless of locality at which based, responsible for an activity not provided for in profit and loss accounts 25 through 35, inclusive, or an activity involving two or more such accounts.

Record here the compensation, including vacation and sick leave pay, of pilots and copilots assigned or held inactive awaiting assignment to flight duty.

Record here the compensation, including vacation and sick leave pay, of other flight personnel assigned or held inactive awaiting assignment to flight status, not responsible for the in-flight management of aircraft, such as engineers, navigation officers and cabin attendants.

(a) Record here the compensation for time of personnel spent directly on specific property and equipment maintenance projects. (See sections 10 and 11-5200.) Vacation and sick leave pay shall be charged to profit and loss account 28 Trainees, Instructors and Unallocated Shop Labor.

(b) This account shall be subdivided as follows:

(a) Record here the compensation, including vacation and sick leave pay, of personnel of all types and classes, including direct supervisory personnel, assigned to ground activities, engaged directly in protecting and controlling aircraft in flight, scheduling and preparing flight crews for flight assignment, parking and servicing aircraft incidental to line operations, and of personnel of all types and classes engaged in servicing and handling traffic of all types and classes on the ground.

(b) This account shall be subdivided as follows by Group II and Group III air carriers:

(a) Record here the compensation, including vacation and sick leave pay, of instructors and personnel in an off-the-job training status; direct maintenance personnel compensation not assigned to specific projects; and vacation or sick leave pay of direct maintenance personnel.

(b) This account shall be subdivided as follows by all air carrier groups:

Record here the compensation, including vacation and sick leave pay, of personnel of all types and classes, including direct supervisory personnel, engaged in local, interstation, or groundair communication activities. This account shall include compensation of personnel such as radio operators, telephone operators, switchboard operators, teletype operators, messengers, etc.

Record here the compensation, including vacation and sick leave pay, of personnel including supervisory personnel, whose primary duties relate to maintaining records or conducting economic or other analyses required for general management controls, such as accountants, economists, statisticians, maintenance record clerks, stores record clerks, stores receiving and issuing clerks and file clerks. The account shall not include personnel engaged in documentation or other activities constituting an integral part of activities encompassed by other objective accounts.

Record here the compensation, including vacation and sick leave pay, of air carrier personnel engaged in law research or representing the air carrier in matters of law.

Record here the compensation, including vacation and sick leave pay, of personnel engaged directly in solicitation of traffic of all types and classes. This account shall not include compensation of traffic office personnel engaged in soliciting activities incidental to the documenting of sales and assigning aircraft space which shall be included in profit and loss account 26 Aircraft and Traffic Handling Personnel.

(a) Record here the compensation, including vacation and sick leave pay, of personnel, including direct supervisory personnel, engaged in purchasing activities.

(b) This account shall include compensation of personnel engaged in maintaining purchasing records but shall not include compensation of personnel responsible for the control of inventories or stores which shall be included in objective account 31 Record Keeping and Statistical Personnel. In cases where the responsibility for maintaining purchasing and stores records are inseparable, the related compensation may be accounted for in accordance with dominant responsibilities.

Record here the compensation, including vacation and sick leave pay, of personnel whose activities are not identifiable with activities provided for in profit and loss accounts 21 through 34, inclusive.

(a) Record here expenses incurred by officers, executives, directors and other personnel, whether for the benefit of the air carrier or for the private benefit of such persons, which are directly or indirectly borne by the air carrier.

(b) This account shall include allowances in lieu of expenses as well as expenses incurred for travel, lodgings, meals, entertainment of individuals or groups of individuals, and membership fees and dues in professional or social clubs and associations.

(c) Records shall be maintained in a conveniently accessible form which will separately and clearly document each charge to this account in terms of its natural characteristics and contribution to the performance of the air carrier's transport operations. The records shall be maintained in such manner as will identify specifically the persons incurring the cost. Costs for standby hotel or other facilities maintained for the air carrier's personnel generally need not be allocated among the individuals using such facilities; however, sufficiently detailed records are required to identify the use made of such facilities by each individual.

Record here expenses, including related taxes, incurred for rental of communication services and for communication services of all types and classes not provided by personnel of the air carrier, such as telegraph, telephone, teletype, private line services, and charges for communication services from organizations operated jointly with associated companies or others.

Record here charges related to the provision of light, heat, power and water including related taxes.

(a) Record here charges by others, including associated companies, for commissions arising from sales of transportation. Commissions, fees or other charges incurred for general agency services, as opposed to commissions arising from sales of transportation, shall not be included in this account but in profit and loss account 43 General Services Purchased.

(b) This account shall be subdivided as follows by Group II and Group III air carriers.

Record here expenditures incurred for legal services by counsel retained on a fee basis and related expenses reimbursed or borne directly by the air carrier and other expenses incurred directly by the air carrier for legal supplies not obtainable from the air carrier's general stationery stock. This account shall not be charged with legal fees or expenses incurred in connection with claims occasioned by accidents or other casualties. Such charges shall be accumulated in balance sheet account 1890 Other Assets and cleared to profit and loss account 58 Injuries, Loss and Damage upon settlement of insurance claims. Nor should this account include fees or expenses related to developmental projects. Such expenses shall be included, as appropriate, in profit and loss account 89.9 Other Miscellaneous Nonoperating Debits or balance sheet account 1830 Unamortized Developmental and Preoperating Costs.

Record here fees and expenses, other than legal fees and expenses, incurred for outside professional and technical services which are reimbursed or borne directly by the air carrier. This account shall not include fees or expenses related to developmental projects. Such expenses shall be included, as appropriate, in profit and loss account 89.9 Other Miscellaneous Nonoperating Debits or balance sheet account 1830 Unamortized Developmental and Preoperating Costs.

(a) Record here charges for services performed for the air carrier by outside and associated companies which are not identifiable with services provided for in profit and loss accounts 37 through 41, inclusive, or which are not expressly identified with other objective expense accounts.

(b) Charges from outside and associated companies for services provided the air carrier under aircraft interchange agreements or other agreements embracing a complete activity or service, such as the operating of jointly used ground facilities, shall be included in this account for each operating function to which the services contribute. Charges for providing aircraft capacity, including charges for depreciation and interest on the capital related to the flight equipment provided, shall be included in function 5100 Flying Operations.

(c) This account shall be subdivided by each air carrier group, as follows:

Record here the charges and fees incurred for landing of aircraft while in line operation.

(a) Record here the cost of fuels and oils issued from stocks of the air carrier, or delivery directly by others, to aircraft for use in flight operations. Adjustments of inventories of aircraft fuel and oil shall also be entered in this account. The cost of fuels and oils used in repairs and maintenance services and nonrefundable fuel and oil taxes shall not be included in this account but in profit and loss accounts 49 Shop and Servicing Supplies and 69 Taxes—Other than Payroll, respectively.

(b) This account shall be subdivided as follows by Group II and Group III air carriers:

(a) Record here the cost of materials and supplies consumed directly in specific property and equipment maintenance projects.

(b) This account shall be subdivided as follows:

Record here rentals, fee, or charges incurred in the use of property and equipment provided by others. When a lease arrangement provides that the amounts paid include charges for maintenance, insurance, or taxes, the amounts related thereto shall not be recorded in this account but in the appropriate expense account to which related.

Record here the cost of supplies and expendable small tools and equipment used in maintaining, servicing and cleaning property or equipment the cost of which cannot be directly assigned to a specific job or type of work.

Record here the cost of stationery and forms used by the air carrier including the cost of engineering and shipping supplies.

(a) Record here the cost of food and refreshments served passengers except food costs arising from interrupted trips.

(b) If the air carrier prepares its own food, the initial cost and expenses incurred in the preparation thereof shall be accumulated in a clearly identified clearing account through which the cost of food shall be cleared to this account, to profit and loss account 36 Personnel Expenses, and to profit and loss account 10 Hotel, Restaurant and Food Service on bases which appropriately allocate the cost of food served passengers, the cost of food provided employees without charge and the cost of food sold.

Record here the cost of supplies consumed and not provided for otherwise.

Record here adjustments for overage, shortage or shrinkage of inventories carried in balance sheet account 1300 Spare Parts and Supplies. Adjustment of aircraft fuel and oil inventories due to retroactive price increases and decreases shall not be included in this account but in profit and loss account 45 Aircraft Fuels and Oils. Gains or losses from retirements of materials and supplies shall not be recorded in this account but in profit and loss account 88.5 Capital Gains and Losses—Operating Property.

Record here the cost of public liability and property damage insurance and all other general insurance except insurance covering liability for injuries, loss, and damage to passengers and cargo, and insurance carried for the protection or welfare of employees.

Record here the cost of purchased insurance covering liability for injuries, loss and damage to passengers and cargo.

(a) Record here all costs for the benefit or protection of employees including all pension expenses whether for payments to or on behalf of retired employees or for accruals or annuity payments to provide for pensions; and all expenses for accident, sickness, hospital, and death benefits to employees or the cost of insurance to provide these benefits. Include, also, expenses incurred in medical, educational, or recreational activities for the benefit of employees. Do not include vacation and sick leave pay, or salaries of doctors, nurses, trainees, or instructors, which shall be recorded in the regular salary accounts.

(b) [Reserved]

Record here the remainder of gains, losses or costs resulting from accidents, casualties or mishandlings, after offsetting insurance recoveries, as accumulated until finally determined in balance sheet account 1890 Other Assets and Deferred Charges. This account shall not include gains or losses from retirement of property and equipment resulting from casualties. Such gains or losses shall be recorded in appropriate capital gains or losses accounts.

Record here the production and distribution cost, excluding compensation of air carrier personnel, of all operating schedules, timetables, circulars and related quick reference charts.

Record here the cost, excluding compensation of air carrier personnel, of all space, direct mail, spot and other advertising for the purpose of increasing air travel, disseminating air travel information and publicizing services offered by the air carrier.

Record here gains or losses from transactions involving currency translations resulting from normal, routine, current fluctuations in rates of foreign exchange. Gains or losses of a nonroutine abnormal character and gains or losses which arise from long-term debt principal and interest transactions shall not be entered in this account but in profit and loss account 85, Foreign Exchange Gains and Losses.

Record here the costs, excluding compensation of air carrier personnel, of producing and distributing publicity releases and other expenses, not chargeable to profit and loss accounts 59 and 60, incurred for the purpose of publicizing or improving the public relations of the air carrier generally.

Record here expenses allowed or paid for the care and serving of passengers because of unscheduled interruptions in passenger journeys. Transportation refunds and the cost of forwarding traffic by surface common carrier or otherwise as a result of such interruptions shall not be charged to this account but to the appropriate operating revenue account.

Record here the cost of membership dues in trade associations, chambers of commerce, or other business associations and organizations together with special assessments related thereto.

Record here corporate and fiscal fees and expenses of the air carrier and all expenses in connection with exchange and transfer of capital stock excluding expenses in connection with original issuance of capital stock.

Record here losses from uncollectible accounts and allowance provisions and adjustments thereto, for such losses. When allowances for uncollectible accounts are established, losses as realized shall be charged against such allowances and shall not be charged to this account.

Record here clearance, customs, duties and brokerage fees and charges applicable to clearing aircraft and traffic.

Record here all taxes levied against the air carrier based upon or directly relating to compensation of personnel.

(a) Record here all taxes levied against the air carrier not otherwise provided for including nonrefundable aircraft fuel and oil taxes. Interest and penalties on delinquent taxes shall not be charged to this account but to profit and loss accounts 82 Other Interest and 89.9 Other Miscellaneous Nonoperating Debits, respectively.

(b) Entries to this account shall clearly reveal each kind of tax and the governmental agency to which paid or payable.

Record here all expenses ordinarily associated with air transportation and its incidental services not provided for otherwise.

(a) Record here airframe and aircraft engine overhauls of the current period which are transferred to balance sheet subaccounts 1601.2 Unamortized Airframe Overhauls or 1602.2 Unamortized Aircraft Engine Overhauls. This account shall also include the amount of deferred overhauls costs being amortized for the current period. For carriers which elect to continue accruing for aircraft overhauls for aircraft types acquired before January 1, 1976, as well as for other aircraft of the same type acquired after January 1, 1976, the related provisions and charges shall be recorded in the appropriate subaccounts of this account.

(b) This account shall be subdivided as follows by all carrier groups:

(a) Where allowances for loss in value of flight equipment expendable parts are established, provisions for accruals to such allowances shall be charged to this account and credited to balance sheet account 1311 Allowance for Obsolescence in accordance with the provisions of that account.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here amortization of deferred changes attaching to the air transportation services conducted by the air carrier which are not prepayments of recurrent expenses ordinarily requiring expenditures of working capital within one year.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here provisions for depreciation of property and equipment carried in balance sheet accounts 1601 through 1640, inclusive.

(b) This account shall be subdivided as follows:

(a) Record here amortization charges applicable to assets recorded under capital leases in Account 1695—Leased Property under Capital Leases.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here credits to operating expenses, which have not been cleared to the objective accounts to which applicable.

(b) Each air carrier shall credit, or charge as appropriate, the objective account prescribed for each expense element which may be involved in distribution of expenses between separate reporting entities or nontransport divisions of the air carrier. At the option of the air carrier, either the individual applicable objective accounts or this account may be credited with amounts capitalized, charged against incidental services, or otherwise assigned to other than separate operating entities of the air carrier provided the aggregate credits to this account in each function do not, for any accounting year, distort the individual objective accounts of the function to which related and all expense credits applicable to complete individual transactions are consistently credited either to this account or the individual objective accounts to which related. Each air carrier using this account shall establish such standard practices as may be prescribed by the BTS or, such standard practices as will prevent credits to this account from significantly distorting the individual objective accounts of each function to which related.

(c) This account shall not be credited with amounts applicable to objective accounts of the Flying Operations, Depreciation, and Direct Maintenance functions. Credits applicable to such functions shall be carried to the individual objective accounts to which applicable.

(d) This account shall be subdivided as follows by all air carrier groups:

This classification is established for purposes of control by the BTS and shall include all charges to operating expenses for maintenance of flight equipment of all types and classes.

(a) This classification is established only for purposes of control by the BTS and reporting on Form 41 by air carriers, and shall reflect all maintenance burden applied in accordance with the provisions of section 24, schedule P-5 of this system of accounts and reports.

(b) This classification shall be subdivided as follows by all air carrier groups:

Included under account 89 Other Nonoperating Income and Expense—Net.

(a) Record here interest expense applicable to long-term debt and capitalized leases.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) This account shall be subdivided as follows by all air carrier groups:

(b) [Reserved]

Included under account 82 Other Interest.

Included under account 82 Other Interest.

Record here gains and losses from transactions involving currency translations resulting from nonroutine abnormal changes in rates of foreign exchange and gains or losses which arise from translations of long-term debt principal and interest transactions.

Included under account 89 Other Non-Operating Income and Expense—Net.

Included under account 89 Other Nonoperating Income and Expense—Net.

(a) Record here all debits and credits of a nonoperating character which are not otherwise provided for in this section.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here quarterly provisions for accruals of Federal, State, local, and foreign taxes based upon net income, computed at the normal tax and surtax rates in effect during the current accounting year. In general, this account shall reflect provisions within each period for currently accruing tax liabilities as actually or constructively computed on tax returns, and any subsequent adjustments. This account shall include credits for refund claims arising from the carryback of losses in the year in which the loss occurs, credits for the carry-forward of losses in the year to which the loss is carried, and investment tax credits in the year in which each credit is utilized to reduce the liability for income taxes.

(b) Income taxes shall be allocated among the transport entities of the air carrier, its nontransport divisions, and members of an affiliated group. Under circumstances in which income taxes are determined on a consolidated basis by an air carrier and other members of an affiliated group, the income tax expense to be recorded by the air carrier shall be the same as would result if determined for the air carrier separately for all time periods, except that the tax effect of carryback and carryforward operating losses, investment tax credits, or other tax credits generated by operations of the air carrier shall be recorded by the air carrier during the period in which applied in settlement of the taxes otherwise attributable to any member, or combination of members, of the affiliated group. Any difference between the income tax so recorded and the amount at which settlement is to be made shall be recorded in subaccount 88.1 Intercompany Transaction Adjustment—Credit or in subaccount 89.1 Intercompany Transaction Adjustment—Debit, as is appropriate.

(c) This account shall be subdivided as follows by all carrier groups:

(a) Record here income tax debits and credits deferred in accordance with the provisions of balance sheet account 2340 Deferred Income Taxes for all material timing differences.

(b) This account shall be subdivided as follows by all air carrier groups:

(a) Record here investment tax credits of the current period which are transferred to balance sheet account 2345 Deferred Investment Tax Credits in accordance with the provisions of balance sheet account 2130 Accrued Taxes. This account shall also include amounts for previously deferred investment tax credits amortized during the current period.

(b) This account shall be subdivided as follows by all carrier groups:

(a) Record here the earnings (losses) of discontinued nontransport operations. For the purposes of this system of accounts and reports discontinued operations shall refer to the disposal of investor controlled companies and nontransport ventures whether sold, abandoned, spun off, or otherwise disposed of. This account shall not include earnings or losses from discontinued transport or transport-related operations.

(b) This account shall be subdivided as follows by all air carrier groups:

Record here material items characterized by their unusual nature and infrequent occurrence. Events or transactions which are material and either unusual or nonrecurring, but not both, shall be recorded in the profit and loss accounts to which they relate and disclosed on BTS Form 41 Schedule P-2 with identification as to their nature and financial effects.

Record here income taxes allocable to items of income included in profit and loss account 96 Extraordinary Items and income tax assessments that do not constitute ordinary adjustments of a recurrent nature. Records supporting entries to this account shall be maintained with sufficient particularity to identify the nature and gross amount of each extraordinary credit and each extraordinary debit.

Record here the difference between the amount of retained earnings at the beginning of the period of a change in accounting principle and the amount of retained earnings that would have been reported at that date if the new accounting principle had been applied retroactively for all periods which would have been affected and by recognizing only the direct effects of a change and the related income tax effect.

(a) United States air carrier. Each large certificated U.S. air carrier shall file with the Department, on a monthly basis, Form 41 Schedule T-100 “U.S. Air Carrier Traffic and Capacity Data By Nonstop Segment and On-flight Market,” and summary data as prescribed in this section and in sections 22 and 25 of this part.

(b) Foreign (non-U.S.) air carrier: Each foreign air carrier as required by part 217 of this chapter shall file Form 41 Schedule T-100(f) “Foreign Air Carrier Traffic Data by Nonstop Segment and On-flight Market.” The “Instructions to Foreign Air Carriers for Reporting Traffic Data on Form 41 Schedule T-100(f),” (Instructions-Foreign Air Carriers) are included in the Appendix to § 217.10 of this chapter.

(c) Reports required by this section shall be submitted to the Bureau of Transportation Statistics in a format specified in accounting and reporting directives issued by the Bureau of Transportation Statistics' Director of Airline Information.

(d) On-flight market and nonstop segment detail data by carrier shall be made public only as provided in section 19-6.

(a) Each air carrier required to file Form 41 Schedule T-100 data shall maintain its operating statistics, covering the movement of traffic in accordance with the uniform classifications prescribed. Codes are prescribed for each operating element and service class. All traffic statistics shall be compiled in terms of each flight stage as actually performed.

(b) Each carrier shall maintain data applicable to the specified traffic and capacity elements prescribed in section 19-5 and section 25, and by general service classes prescribed in section 19-4 of this part.

(c) Operating statistics shall be maintained in accordance with the type of record, either nonstop segment or on-flight market.

(d) Schedule T-100 collects summarized flight stage data and on-flight market data. All traffic statistics shall be compiled in terms of each revenue flight stage as actually performed. The detail T-100 data shall be maintained in a manner permitting monthly summarization and organization into two basic groupings: The nonstop segment information that must be summarized by equipment type, within class of service, within pair-of-points, without regard to individual flight numbers. The second grouping requires that the enplanement/deplanement information be broken out into separate units called “on-flight market records.” These records must be summarized by class of service, within pair-of-points, without regard for equipment type or flight number.

(e) The Department may authorize joint-service operations between two direct air carriers. Examples of these joint-services are blocked-space agreements, part-charter agreements, code-share agreements, wet-lease agreements, and other similar arrangements. Joint services operations are reported by the air carrier in operational control of the aircraft. The traffic moving under these agreements is reported on Schedule T-100 the same way as any other traffic on the aircraft.

(f) Any questions regarding T-100 should be e-mailed to [email protected].

(a) Each reporting air carrier shall maintain its prescribed operating statistics in a manner and at such locations as will permit ready accessability for examination by representatives of the Department. The record retention requirements are prescribed in part 249 of this chapter.

(b) [Reserved]

(c) Form 41 Schedule T-100 reports shall be transmitted in accordance with the standard practices established by the Department, and must be received by the Department within 30 days following the end of each reporting month.

The statistical classifications are designed to reflect the operating elements attributable to each distinctive class of service offered. The operating elements shall be grouped in accordance with their inherent characteristics as follows:

(a) Scheduled services. Scheduled services shall include traffic and capacity elements applicable to air transportation provided pursuant to published schedules and extra sections to scheduled flights. Scheduled Passenger/Cargo (Service Class F) is a composite of first class, coach, and mixed passenger/cargo service. The following classifications shall be reported, as applicable:

(b) Nonscheduled services. Nonscheduled services shall include all traffic and capacity elements applicable to the performance of nonscheduled aircraft charters, and other air transportation services not constituting an integral part of services performed pursuant to published flight schedules. The following classifications shall be reported, as applicable:

(c) All Services. This classification shall reflect, for the applicable elements, the aggregate amounts for all services performed by the operating entity:

(a) Within each of the service classifications prescribed in section 19-4, data shall be reported as applicable to specified air transport traffic and capacity elements.

(b) These reported items are as follows:

(c) These reported items are further described as follows:

(1) Reporting period date. The year and month or quarter to which the reported data are applicable.

(2) Carrier, Carrier entity code. Each foreign air carrier shall report its name and code (assigned by DOT). Each U.S. air carrier shall report its name and entity code (a five digit code assigned by DOT that identifies both the carrier and its entity) for its particular operations. The Office of Airline Information (OAI) will assign or confirm codes upon request; OAI's address is in the Appendix to section 25 of this part and the Appendix to § 217.10 of this chapter.

(3) Service class code. The service class codes are prescribed in section 19-4 of this part. In general, classes are divided into two broad categories, either K (scheduled) or V (nonscheduled), where K = F + G for all carriers and V = L + N + P + R for U.S. air carriers and comprises L + P and Q for foreign air carriers. Refer to section 19-4 for the more information on service class codes F, G, L, N, P, R and Q.

(4) Record type code. This code indicates whether the data pertain to nonstop segment (record type S) or on-flight market (record type M).

(5) Aircraft type code. This code represents the aircraft types, as described in the Appendix to section 25 of this part.

(6) Origin, Destination airport code(s). These codes represent the industry designators described in the Appendix to section 25 of this part. A common private industry source of these industry designator codes is the Official Airline Guides (OAG). OAI will assign codes upon request if not listed in the OAG.

(7) 110 Revenue passengers enplaned. The total number of revenue passengers enplaned at the origin point of a flight, boarding the flight for the first time; an unduplicated count of passengers in a market. Under the T-100 system of reporting, these enplaned passengers are the sum of the passengers in the individual on-flight markets. Report only the total revenue passengers enplaned in item 110. For all air carriers and all entities, item 110 revenue passengers enplaned is reported on Form 41 Schedule T-100 in column C-1, as follows:

(8) 130 Revenue passengers transported. The total number of revenue passengers transported over single flight stage, including those already on board the aircraft from a previous flight stage. Report only the total revenue passengers transported in item 130. For all air carriers and all entities, item 130 revenue passengers transported is reported on Form 41 Schedule T-100 in Column B-7, as follows:

(9) 140 Revenue passenger-miles. Computed by multiplying the interairport distance of each flight stage by the number of passengers transported on that flight stage.

(10) 210 Revenue cargo tons enplaned. The total number of cargo tons enplaned. This data element is a sum of the individual on-flight market figures for each of the following categories: 217 Freight and 219 mail. This element represents an unduplicated count of the revenue traffic in a market.

(11) 230 Revenue tons transported. The number of tons of revenue traffic transported. This element is the sum of the following elements: 231 Passengers transported-total, 237 Freight, and 239 Mail.

(12) 240 Revenue ton-miles—total. Ton-miles are computed by multiplying the revenue aircraft miles flown (410) on each flight stage by the number of tons transported on that stage. This element is the sum of 241 through 249.

(13) 241 Revenue ton-miles—passenger. Equals the number of passengers times 200, times interairport distance, divided by 2000. A standard weight of 200 pounds per passenger, including baggage, is used for all operations and service classes.

(14) 247 Revenue ton-miles—freight. Equals the volume of freight in whole tons times the interairport distance.

(15) 249 Revenue ton-miles—mail. Equals the volume of mail in whole tons times the interairport distance.

(16) 270 Available capacity-payload. The available capacity is collected in pounds. This figure shall reflect the payload or total available capacity for passengers, mail and freight applicable to the aircraft with which each flight stage is performed.

(17) 280 Available ton-miles. The aircraft miles flown on each flight stage multiplied by the available capacity on the aircraft in tons.

(18) 310 Available seats. The number of seats available for sale. This figure reflects the actual number of seats available, excluding those blocked for safety or operational reasons. Report the total available seats in item 310. For all air carriers and all entities, item 310 available seats, total is reported on Form 41 Schedule T-100 in column B-4, as follows.

(19) 320 Available seat-miles. The aircraft miles flown on each flight stage multiplied by the seat capacity available for sale.

(20) 410 Revenue aircraft miles flown. Revenue aircraft miles flown are computed in accordance with the airport pairs between which service is actually performed; miles are generated from the data for scheduled aircraft departures (Code 520) times the interairport distances (Code 501).

(21) 430 Revenue aircraft miles scheduled. The number of revenue aircraft miles scheduled. All such data shall be maintained in conformity with the airport pairs between which service is scheduled, whether or not in accordance with actual performance.

(22) 501 Interairport distance. The great circle distance, in official statute miles as prescribed in part 247 of this chapter, between airports served by each flight stage. Official interairport mileage may be obtained from the Office of Airline Information at the address included in section 25 of this part.

(23) Revenue aircraft departures performed. The number of revenue aircraft departures performed.

(24) 520 Revenue aircraft departures scheduled. The number of revenue aircraft departures scheduled, whether or not actually performed.

(25) 610 Revenue aircraft hours (airborne). The elapsed time, computed from the moment the aircraft leaves the ground until its next landing.

(26) 630 Aircraft hours (ramp-to-ramp). The elapsed time, computed from the moment the aircraft first moves under its own power from the boarding ramp at one airport to the time it comes to rest at the ramp for the next point of landing. This data element is also referred to as “block” and block-to-block aircraft hours.

(27) 650 Total aircraft hours (airborne). The elapsed time, computed from the moment the aircraft leaves the ground until it touches down at the next landing. This includes flight training, testing, and ferry flights.

(28) 810 Aircraft days assigned to service—carrier's equipment. The number of days that aircraft owned or acquired through rental or lease (but not interchange) are in the possession of the reporting air carrier and are available for service on the reporting carrier's routes plus the number of days such aircraft are in service on routes of others under interchange agreements. Includes days in overhaul, or temporarily out of service due to schedule cancellations. Excludes days that newly acquired aircraft are on hand, but not available for productive use, days rented or leased to others (for other than interchange) and days in possession but formally withdrawn from air transportation service.

(29) 820 Aircraft days assigned to service—carrier's routes. The same as “aircraft days assigned to service—carrier's equipment,” but excluding the number of days that the reporting carrier's owned or rented equipment are in the possession of others under interchange agreements and including the number of days aircraft of others are in the possession of the reporting air carrier under interchange agreements.

(30) 921 Aircraft fuels issued (gallons). The amount of aircraft fuels issued, in U.S. gallons, during the reporting period for both revenue and nonrevenue flights.

(a) Detailed domestic on-flight market data and nonstop segment data except military data shall be made publicly available after processing. Domestic data are defined as data from air transportation operations from a place in any State of the United States, the District of Columbia, the Commonwealth of Puerto Rico and the Virgin Islands, or a U.S. territory or possession to a place in any State of the United States, the District of Columbia, the Commonwealth of Puerto Rico and the Virgin Islands, or a U.S. territory or possession. Domestic military operations are reported under service codes N or R.

(b) Detailed international on-flight market and nonstop segment data in Schedule T-100 and Schedule T-100(f) reports, except military data, shall be publicly available immediately following the Department's determination that the database is complete. Military operations are reported under service codes N or R. Data for on-flight markets and nonstop segments involving no U.S. point shall not be made publicly available for three years. Industry and carrier summary data may be made public before the end of six months or the end of three years, as applicable, provided there are three or more carriers in the summary data disclosed. The Department may, at any time, publish international summary statistics without carrier detail. Further, the Department may release nonstop segment and on-flight market detail data by carrier before the end of the confidentiality period as follows:

(1) To foreign governments as provided in reciprocal arrangements between the foreign country and U.S. Government for exchange of on-flight market and/or nonstop segment data submitted by air carriers of that foreign country and U.S. carriers serving that foreign country;

(2) To parties to any proceeding before the Department under 49 U.S.C. Subtitle VII, as required by the Administrative Law Judge or other decisionmaker of the Department. Parties may designate agents or consultants to receive the data in their behalf, provided the agents or consultants agree to abide by the disclosure restrictions. Any data to which access is granted pursuant to this provision may be introduced into evidence, subject to the normal rules of admissibility of evidence.

(3) To agencies and other components of the U.S. Government for their internal use only.

(a) All U.S. large certificated air carriers conducting scheduled passenger operations (except helicopter carriers) shall participate in a Passenger Origin-Destination (O & D) Survey covering domestic and international operations, as described in the instructions manual entitled, Instructions to Air Carriers for Collecting and Reporting Passenger Origin-Destination Survey Statistics (Appendix A to this section), and in Passenger Origin-Destination Directives issued by the Department's Bureau of Transportation Statistics (BTS), Office of Airline Information (OAI). Copies of these Instructions and Directives are provided to each large carrier participating in the Survey. Copies are also available from the Office of Airline Information, RTS-42, U.S. Department of Transportation, 1200 New Jersey Avenue, SE., Washington, DC 20590. Copies of these Instructions and Directives are available on the BTS Web page at (http://www.bts.gov/programs/airline_information/).

(b) Reports required by this section shall be submitted to the Bureau of Transportation Statistics in a format specified in accounting and reporting directives issued by the Bureau of Transportation Statistics' Director of Airline Information.

(c) A statistically valid sample of light coupons shall be selected for reporting purposes. The sample shall consist of at least 1 percent of the total lifted ticket flight coupons for all large domestic markets listed in the Instructions and 10 percent for all others—including domestic and international markets. The sample shall be selected and reported in accordance with the requirements of paragraph (a) of their section, except that the participating O & D carriers with nonstandard ticketing procedures, or other special operating characteristics, may propose alternative procedures. Such departures from standard O & D Survey practices shall not be authorized unless approved in writing by the Director, Office of Airline Information under the procedures in Sec. 1-2 of 14 CFR part 241. The data to be recorded and reported from selected lifted ticket flight coupons, as stipulated in the Instructions and Directives shall include the following data elements: Point of origin, carrier on each flight-coupon stage, fare-basis code for each flight-coupon stage, points of stopover or connection (interline and intraline), point of destination, number of passengers, and total dollar value of ticket (fare plus tax).

(d) Data covering the operations of foreign air carriers that are similar to the information collected in the Passenger Origin-Destination Survey are generally not available to the Department, the U.S. carriers, or U.S. interests. Therefore, because of the damaging competitive impact on U.S. carriers and the adverse effect upon the public interest that would result from unilateral disclosure of the U.S. survey data, the Department has determined its policy to be that the international data in the Passenger Origin-Destination Survey shall be disclosed only as follows:

(1) To an air carrier directly participating in and contributing input data to the Survey or to a legal or consulting firm designated by an air carrier to use on its behalf O & D data in connection with a specific assignment by such carrier.

(2) To parties to any proceeding before the Department to the extent that such data are relevant and material to the issues in the proceeding upon a determination to this effect by the Administrative Law Judge or by the Department's decision-maker. Any data to which access is granted pursuant to this section may be introduced into evidence subject to the normal rules of admissability of evidence.

(3) To agencies and other components of the U.S. Government.

(4) To other persons upon a showing that the release of the data will serve specifically identified needs of U.S. users which are consistent with U.S. interests.

(5) To foreign governments and foreign users as provided in formal reciprocal arrangements between the foreign and U.S. governments for the exchange of comparable O & D data.

(e) The Department reserves the right to make such other disclosures of the O & D data as is consistent with its regulatory functions and responsibilities.

Appendix A to § 19-7—Instructions to Air Carriers for Collecting and Reporting Passenger Origin-Destination Survey Statistics All questions, comments, extension and waiver requests should be e-mailed to [email protected]. B. Narrative Description

A single O&D Survey is conducted continuously by the large U.S. certificated air carriers. Foreign air carriers do not directly participate in the Survey, although some of their data are captured in the Survey, since passengers who share a ticketed itinerary between a U.S. carrier and a foreign carrier may be sampled by the U.S. carrier. The authority for these instructions is found in 14 CFR part 241, sec. 19-7.

The Survey samples revenue passenger trips moving in whole or in part on domestic and/or international scheduled services of the carriers participating in the Survey. In general, these requirements do not apply to small certificated, all-cargo and all charter carriers.

The source documents for the Survey data are passenger tickets. These data are collected from the “lifted” flight coupons of tickets (a portion of a multi-part ticket booklet of three 1 or more coupons, including one for each stage of the passenger's trip itinerary which is lifted by the carrier as the passenger boards a particular flight segment).

1 Each ticket booklet is comprised of one or more flight coupons for passenger travel in a city-pair market, plus a passenger coupon (the traveler's receipt) and the auditor coupon (for the carrier's internal controls).

The Survey data are taken from the coupon that is lifted by a participating carrier, unless it is apparent from the lifted coupon that another participating carrier has already recorded and reported the data, in which instance the ticket coupon is non-reportable for the second honoring/participating carrier. The complete passenger itinerary, and related data on type of fare and dollar value of the ticket, is recorded as one entry from the sampled, reportable flight coupon.

The recording of data from the sampled flight coupon normally consists of transcribing the information exactly as indicated on the ticket. The detail recorded for each trip shows the complete routing from the origin city (airport code) to the destination city (airport code) including, in sequence from the origin, each point of transfer and stopover (intraline and interline), the summarized fare-basis code shown for each flight coupon stage of the itinerary, and the total dollar value of the fare and tax for the entire ticket.

Prior to 1987, the Survey was generally based on a 10-percent sample of passenger tickets. Beginning July 1, 1987, the Survey is collected primarily on the basis of a stratified, scientific sample of at least 1 percent of tickets in domestic major markets and 10 percent of tickets in all other domestic and in all international city-pair markets. The Survey data are taken from the selected flight coupons of the tickets sampled: single-coupon or double-coupon round trips in domestic major markets where the ticket serial number ends in double zero (00) and all other ticket coupons ending in zero (0). This procedure yields a “two-tiered” stratified sample.

Group tickets are included on the basis of a 10-percent sample when the number of passengers on such a group ticket is 10 or less. Group tickets with more than 10 passengers on each ticket are included on the basis of a 100 percent census, i.e., all such tickets are sampled, regardless of serial number, and the total data listed are conformed to a 10 percent sample for inclusion in the O&D Survey.

Following the selection of reportable flight coupons and the recording of data, each participating carrier shall edit and summarize 2 the data into a quarterly report to the Department.

2 These summarization procedures include showing two or more passengers with the same itinerary as one O&D record and compressing extremely lengthy itineraries (such as around-the-world tickets) into a standard trip stage length limit (which may be either seven or twenty-three stages, at the carrier's option), as explained in Section V.D.

II. Effective Date of Instructions

These data collection and reporting instructions are effective on and after July 1, 1987 and apply to all flight coupons lifted on or after July 1, 1987.

III. Carriers Participating in Survey

A. Participating carriers. As defined in section 19-7 of the Department's Economic Regulations (14 CFR part 241), the participants in the O&D Survey include all large certificated air carriers conducting scheduled passenger services (except helicopter carriers). These participating carriers collect and report data in accordance with these Instructions, and supplemental Passenger Origin-Destination Directives that may be issued periodically. The list of participating carriers will be issued by reporting directive under the authority in 14 CFR 385.27(b).

B. Amendments to list of participating carriers. As new carriers begin service, they will be required to file O&D Survey Data. These carriers will not be added to the participating carrier list automatically, but will be added when the next annual review is made.

IV. Submission of Reports

A. Period covered by reports. Reports are to be filed for each calendar quarter of the year as shown below:

Report	Time period covered
1st quarter	Jan. 1 through Mar. 31.
2nd quarter	Apr. 1 through June 30.
3rd quarter	July 1 through Sept. 30.
4th quarter	Oct. 1 through Dec. 31.

B. Filing date for reports. Reports are to be filed with the Department on or before the dates listed below. The mailing address is on the inside cover to these instructions.

Report	Due date 1
1st quarter	May 15
2nd quarter	Aug. 15
3rd quarter	Nov. 15
4th quarter	Feb. 15

¹ Due dates falling on Saturday, Sunday or national holiday will become effective the first following work day.

C. Format of the Report. Reports required by this section shall be submitted to the Bureau of Transportation Statistics in a format specified in accounting and reporting directives issued by the Bureau of Transportation Statistics' Director of Airline Information.

D. [Reserved]

E. All reports shall be filed with the Bureau of Transportation Statistics in a format specified in accounting and reporting directives issued by the Bureau of Transportation Statistics' Director of Airline Information.

V. Selection of Sample and Recording of Data. 4

4 Upon approval of the Director, Office of Airline Information, carriers may continue current reporting procedures (up to twenty-three stages of a passenger flight) and may report a uniform 10 percent sample of tickets lifted (each zero ending lifted coupon) without reducing the sample size from 10 percent to 1 percent for domestic major markets. Note that the domestic major markets will be reviewed each year at June 30, based on the prior 12 months O&D data, and the list amended as necessary. The list could remain static for more than a year, although it will be reviewed annually. Necessary amendments will be effective on January 1 of the following year.

A. Sampling Basis. Each participating carrier in this O&D Survey shall search all listed flight coupons, whether the coupons are its own ticket stock or on the ticket stock of another U.S. or foreign carrier (either standard IATA and ARC ticket stock or nonstandard ticket stock), and is to select for reporting purposes the following flight coupons:

(1) Major domestic markets. All single-passenger flight coupons that are either a single flight coupon ticket or part of a round trip, two coupon ticket where the ticket serial number ends in the digits double-zero (00).

Note.

The list of major domestic markets will be issued by reporting directive under the authority in 14 CFR 385.27(b).

(2) International markets and all other domestic markets. (a) All single-passenger flight coupons with ticket serial numbers ending with the digit zero (0);

(b) Those group-ticket flight coupons with 10 or fewer passengers with ticket serial numbers ending with the digit zero (0);

(c) Those group-ticket flight coupons with 11 or more passengers without regard to serial number; and

(d) Itineraries in major domestic markets that comprise more than two coupons are sampled on a uniform 10 percent basis, by selecting all ticket serial numbers ending with the digit zero (0).

B. Selection of Reportable Flight Coupons. The flight coupons identified above are to be examined to isolate the reportable flight coupons, i.e. coupons from which data are to be recorded. Flight coupon data are reported only by the first honoring and participating carrier (operating carrier). Such carriers shall report the required data for the entire ticketed itinerary.

If a participating carrier has preceded an examining carrier on any stage in the trip itinerary, including any stage in a conjunction itinerary and any stage in a reissued ticket (either before or after reissue) that coupon is not reportable.

For conjunction tickets, the ticket number for the first ticket booklet determines if the conjunction tickets should be reported in the Survey. Otherwise, conjunction tickets do not require special treatment and are governed by the rules for regular tickets.

No adjustment is made in the Survey for alterations or changes in the trip itinerary subsequent to the stage covered by the reportable coupon.

C. Optional Use of Other Sampling Procedures.

(1) Alternative sampling procedures or alternative O&D data systems may be proposed by participating carriers with nonstandard ticketing procedures, or other special operating characteristics. Data reported under proposed alternative procedures must approximate the usefulness and statistical validity of the O&D Survey.

(2) Such departures from the prescribed O&D Survey practices shall not be authorized unless approved in writing by the Director, Office of Airline Information (address inside front cover). The proposed alternative O&D Survey procedures must be described in detail in the letter requesting the waiver.

D. Recording of Data from Reportable Flight Coupons. (1) The following items are to be reported from the reportable flight coupons:

(a) Point of origin,

(b) Operating carrier on each flight stage (if unknown, identify ticketed carrier),

(c) Ticketed carrier on each flight stage,

(d) Fare-basis on each flight coupon, C, D, F, G, X or Y,

(e) Points of stopover or connection (interline and intraline),

(f) Point of destination,

(g) Number of passengers, and

(h) Total dollar value of ticket (fare plus tax and other charges, such as Passenger Facility Charges).

(2) The individual items are to be recorded in the sequence of occurrence in the itinerary as follows:

(a) All entries for points (airport codes 5 ) in an itinerary are to be recorded in three-letter airport code data to fit into the stage-length limitation (seven or twenty-three stages at the carrier's option), all airport codes are to be reported, including data on commuter, foreign, intra-state and other carriers' portions of itineraries. Normally codes are recorded as they appear on the ticket. However, if a code is obviously incorrect, record the correct code. For instance, if a ticket is coded DCA-NYC or Washington/National to New York when the flight stage actually operated from Washington, Dulles to Newark (EWR), record the correct airport code. When only name spellings of a city appear on the ticket for multi-airport cities (such as Washington, New York, San Francisco, or Los Angeles), record the specific three letter airport code. In cases where two airport codes are shown on the ticket for a point, such as when the passenger arrives at an airport such as San Francisco and departs from another local airport such as Oakland, record the code for the arrival airport, enter a surface segment indicator (—) to the departure airport, and record the departure airport code. (When the surface portion is at the beginning or end of an itinerary, the surface indicator is to be omitted). For example:

5 Codes to be used are those appearing in the Official Airline Guide at the time the data are being recorded. If a code is not found in the OAG, contact the Director, Office of Airline Information (address inside front cover).

000001	UCA	YV	UA	Y	JFK	TW	TW	X
Passenger(s)	Utica	Mesa Operating Carrier	United Ticketed Carrier	Fare Code	New York Kennedy Airport	TWA Operating Carrier	TWA Ticketed Carrier	Fare Code

Surface Transportation

SFO			(Blank space)
San Francisco	Operating Carrier	Ticketed Carrier	Fare Code

OAK	UA	UA	G	LAX	DL	DL	F
Oakland	United Operating Carrier	United Ticketed Carrier	Fare	Los Angeles	Delta Operating Carrier	Delta Operating Carrier	Fare Code

SLC	NW	NW	D	PHX	AA	AA	C	LAX
Salt Lake City	Northwest Operating Carrier	Northwest Ticketed Carrier	Fare Code	Phoenix	American Operating Carrier	American Ticketed Carrier	Fare Code	Los Angeles

JL	JL	C	NRT	04596
Japan Air Lines Operating Carrier	Japan Air Lines Ticketed Carrier	Fare Code	Tokyo Narita	Dollars of Fare + Tax

In the above example, the passenger trip stages or segments are compressed into the maximum of 7 stages so that several intermediate city-pairs (Los Angeles to Seattle to Anchorage, or LAX—SEA—Anc) and the related carriers have not been recorded, as prescribed below in this Section V.D.(3)(e). In addition, after the fourth city-pair (Los Angeles-Salt Lake City), the passenger trip itinerary moves from the initial four-part ticket booklet onto another “conjunction” ticket, and the summary fare code data are not recorded beyond the initial four-part ticket.

(b) All entries for operating and ticketed carriers for a coupon stage of an itinerary are to be recorded using two character IATA-assigned or DOT codes, as in the above example. Note that the fare code summary was properly inserted after the ticketed carrier's code, i.e., UA for United Air Lines and Y for unrestricted coach class service. When a two-character carrier code is shown on the ticket, record that code for the ticketed carrier. However, if a code is obviously incorrect, record the correct carrier code. If the reporting carrier does not know the operating carrier on a downline code-share segment, it would use the ticketed carrier's code for both the operating and ticketed carriers. The reporting carrier is not responsible for knowing the operating carrier of a downline code-share where it is not a party to the code-share segment. Except for the infrequent compression of data to fit into the stage-length limitation (7 or 23 stages at the carrier's option), all carrier codes are to be recorded, including data on air taxis, commuters, intra-state, and other carrier portions of itineraries. On tickets involving interchange service or other cooperative carrier arrangements, the juncture point(s) where the passenger moves from one carrier system to another is to be recorded as an intermediate point in the itinerary, even when not shown on the ticket and even though the flight may overfly the juncture point.

(c) Entries for fare-basis codes are to be taken from the “fare basis” and “fare description” portions of the ticket and simplified into the appropriate category, as shown below. No attempt shall be made to determine and record fare-basis codes for that portion of a conjunction ticket appearing in the ticket. Fare-basis codes are to be recorded in one-character alphabetic codes. The fare-basis codes are recorded as follows:

C—Unrestricted Business Class D—Restricted Business Class F—Unrestricted First Class G—Restricted First Class X—Restricted Coach/Economy Class Y—Unrestricted Coach/Economy Class U—Unknown (This fare category is used when none is shown on a ticket coupon, or when a fare category is not discernible, or when two or more carrier fare codes are compressed into a single stage of a passenger trip).

(d) In recording the number of passengers, each single-passenger ticket is to be recorded as one passenger. Tickets for infants under two years of age not occupying a seat are not to be counted. A revenue passenger is defined in Section X.

For group tickets of 10 or fewer passengers per ticket record the actual number of passengers on each ticket, i.e., either 2, 3, 4, 5, 6, 7, 8, 9 or 10. For group tickets with 11 or more passengers (those sampled at a 100-percent rate) record the actual number of passengers traveling on each ticket, but keep these entries separate from the group ticket records with 10 or fewer passengers and from the single-passenger ticket records. Group tickets with 11 or more passengers are to be sorted and summarized to combine all passengers for all itineraries which are identical in every respect, i.e., points, carriers, fare basis codes, and average dollar value (as defined in paragraph (e), below). The total number of passengers on each summarized record is to be divided by 10, rounding to the nearest whole passenger. If the quotient ends in 0.5 or more, raise to the next whole passenger. If the quotient ends in less than 0.5, drop the fraction. These large group-ticket records, after division by 10 for compatibility with the other data, are to be merged with the single-passenger records and with the group-ticket entries from tickets of 10 or fewer passengers for the quarterly O&D Survey report.

(e) The total dollar value shall be taken from the “Total” box on each ticket and shall be the sum of the fare plus tax for the entire ticket. Record this amount in whole U.S. dollars, with the cents dropped. Do not round cents to nearest whole dollar.

Amounts on tickets stated in foreign currency are to be converted to U.S. dollar equivalents. For all group tickets, the dollar value to be recorded shall be the average amount per passenger, determined by dividing the total dollar value for the entire group by the number of passengers on the group ticket, dropping cents in the average amount.

(3) The length of the itineraries to be recorded is limited to a maximum of seven stages or twenty-three stages, at the carrier's option. This recognizes that the vast majority of tickets sampled have seven stages or fewer and that the rare occurrences of extremely lengthy itineraries do not impact the overall Survey results enough to justify their reporting burden. Therefore, trips longer than these limits are compressed to fall within the stated maximums. The ticketed origin and destination are retained, but the intermediate routing is compressed by applying the following rules, in sequence:

(a) Combine any contiguous open, unknown carrier, or surface stages eliminating the connecting point, and ignoring the fare-basis codes, if different:

(b) Combine any contiguous stages via the same non-U.S. carrier, eliminating the connecting point, and ignoring the fare-basis codes, if different;

(c) Combine any contiguous stages via different non-U.S. carrier, making the carrier “UK”, eliminating the connecting point, and ignoring fare-basis codes, if different:

(d) Combine any contiguous stages via the same U.S. carrier, eliminating the connecting point, and ignoring the fare-basis codes, if different, and;

(e) If the trip, after applying the four steps above, is still too long, record the compressed routing through to the stage length limitation city (seventh or twenty-third city), enter UK as the final carrier, and then record the ticketed destination as the next (the 8th or 24th) city.

VI. Summarization of Recorded Data

A. General. Prior to the submission of each quarterly report to the Department, each carrier is to summarize the data in accordance with the rules in Section VI.B. In special hardship cases, carriers may submit a waiver request (with justification under Section 1-2 of 14 CFR part 241) requesting permission to report their flight coupon records exactly as represented on their lifted tickets. Waiver requests must provide the documentation described in Section VI.C. so that the Department can develop the necessary procedures and edit routines to ensure the accuracy and reliability of the overall O&D Survey results. The granting of such waivers will depend upon the availability of resources for the Department to assume this additional burden, which can only be determined on a case by case basis, after evaluating each carrier's need.

B. Rules for Summarization. Sort the recorded entries into sequence by the entire record (excluding the passenger field) i.e., by origin, complete routing (including fare-basis codes), tickets destination, and dollar value of ticket. All identical records are then to be combined into one summary record. The number of passengers on the summary record is to be the sum of the passenger amounts of all the individual records combined. Passengers are only summarized where records are identical in all respects except in the number of passengers including dollar value of ticket. Note: Do not summarize dollars over identical records. This summarization is to include the entries from group tickets, but only after the entries for group tickets with 11 or more passengers have been summarized and divided by 10, as stated in Section V.D.(2)(d).

C. Waiver Requests. Requests for permission to depart from the required O&D Survey procedures should include a procedural statement describing the process the carrier proposed to employ in examining, selecting and editing the data from reportable flight coupons for the O&D Survey, as well as a flow chart diagramming the proposed procedures.

D. Quantity and Quality Controls. Carriers are expected to establish and maintain continuous quantity and quality controls on the flow of all lifted flight coupons through their system processes to determine the total number of coupons handled and the number of reportable coupons selected. Such data controls and tests have not been specified by the Department, and necessarily must be developed by each carrier. Each participating carrier shall develop and use on a continuous basis such control tests as are necessary to ensure that all reportable coupons are being selected, recorded and reported as intended by these O&D Survey Instructions. Such controls should extend over all ADP processing, both in-house and that from external service bureaus.

VII. Editing of Recorded Data

A. City and Airport Codes. Prior to submission of O&D Survey reports, each carrier is to edit the recorded data to validate city and airport codes. This edit is to verify that the codes recorded are valid official codes, and it is independent of whether or not the carriers shown actually operated into or out of the airport shown. Any questions about airport codes should be addressed to the Director, Office of Airline Information (see inside of cover).

B. Edit Responsibility of Carriers. Each carrier is responsible for developing edit procedures and internal controls over its data entry and processing procedures so that valid and reliable data are captured in the O&D Survey inputs and are properly summarized in the outputs. Since the carriers have many different statistical systems, it is not practicable for the Department of Transportation to prescribe specific controls in this area, and each carrier is responsible for developing the appropriate internal control procedures to edit the O&D Survey data and ensure the integrity of these data. The Department will control the accuracy of its processing of the sampled data upon receipt from the carriers.

C. System Documentation of Edits. Carriers are required to maintain written O&D Survey procedural statements and flow charts. As provided in Section VIII, these must be established, or re-certified as of July 1, 1987, and thereafter when significant procedural revisions occur.

VIII. Control of Sample Selection and Data Recording

A. Sample Accuracy and Reliability. In order to maximize the accuracy and reliability of the sample selection and data recording, each carrier is to:

(1) Develop a written statement describing the procedures it will employ in examining and selecting reportable flight coupons and in recording, summarizing, editing, and testing the Survey data.

(2) Submit any proposed changes in the above procedures to the Department's Office of Airline Information, prior to implementation of such changes.

(3) Establish continuous quantity controls on the flow of all lifted flight coupons through the carrier's accounting processing to determine the total number of coupons handled, and the number of reportable coupons selected. Tests are to be made continuously to assure that all reportable coupons are being selected and the data recorded. Such tests should be completed while the “lifted” flight coupons (representing earned passenger revenues for flight segments operated) remain in the possession of the carrier. Establish such other internal control procedures as are necessary for supervising and monitoring the accuracy of the recording of data from reportable flight coupons.

B. Staff Review. The OAI staff will review the carrier procedures and practices and may request modifications or the use of special procedures necessary to improve the sample or to bolster the controls for accuracy and reliability.

[Reserved]

X. Glossary of Terms

Selected terms used in the foregoing instructions are here defined and explained in the context of the O&D Survey.

ADP. An abbreviation for automated data processing, which is the term applied to all forms of machine processed data.

Carrier. Any scheduled air carrier, U.S. or foreign, that appears on a coupon stage in a ticketed itinerary, including helicopter, air taxi, commuter, intra-Alaska carriers, and intra-state carriers.

City or origin. (See origin.)

Conjunction ticket. Two or more tickets concurrently issued to a passenger and which together constitute a single contract of carriage.

Connecting point. An intermediate point in an itinerary at which the passenger deplanes from one flight and boards another flight, either on the same carrier or from the flight of one carrier to a flight of another carrier, for continuation of the journey.

Coupon stage. (See flight-coupon stage.)

Destination. The last point in the itinerary and the last point at which the passenger is to deplane at the completion of the journey. (In roundtrip itineraries, the destination and the origin are the same.)

Dollar value of ticket. (See total dollar value of ticket.)

Domestic. Itineraries within or between the 50 U.S. States and the District of Columbia are considered domestic for this Survey.

Fare basis code. The alphabetic code(s) or combination of alphabetic and numeric codes appearing in the “Fare basis” box on the flight coupon which describe the applicable service and discount to which the passenger is entitled. All fare basis codes are summarized into basic categories; namely C—Unrestricted Business Class, D—Restricted Business Class, F—Unrestricted First Class, G—Restricted First Class, X—Restricted Coach/Economy Class, Y—Unrestricted Coach/Economy Class, and U—Unknown (This fare category is used when none is shown on a ticket coupon, or when a fare category is not discernible, or when two or more carrier fare codes are compressed into a single stage of a passenger trip).

Fare ladder. The “For-issuing-office-only” box of a ticket.

Flight-coupon stage. The portion of an itinerary which lies between two contiguous points in the itinerary and between which points the passenger is to travel on a single flight.

Group ticket. A single ticket valid for the transportation of two or more passengers over the same itinerary.

Interline transfer. An occurrence at an intermediate point in an itinerary where a passenger changes from one carrier to another carrier, with or without a stopover.

Intermediate point. Any point in an itinerary, other than the origin or destination, at which the passenger makes an interline or intraline connection or stopover.

International. The world area outside the 50 U.S. States and the District of Columbia. Itineraries between points outside the 50 States are considered as international for this Survey, as well as itineraries between the 50 States and U.S. possessions, and between or within U.S. possessions.

Intraline transfer. An occurrence at an intermediate point in an itinerary where a passenger changes from a flight of one carrier to another flight of that same carrier, with or without stopover, or where the passenger changes from one class of service to another class of service on the same flight.

Itinerary. All points in the passenger journey, beginning with the origin, followed by the routing, and ending with the destination, in the sequence shown on the ticket.

Operating air carrier. Under a code-share arrangement, the air carrier whose aircraft and flight crew are used to perform a flight segment.

Origin. The first point in the itinerary and the point where the passenger first boards a carrier at the beginning of the itinerary.

Participating carrier. A carrier which is governed by the Survey data collection and reporting instructions contained herein and which is required to file Survey reports with the Department of Transportation.

Point. A city or airport (always identified by its airport code).

Reissued ticket. A ticket issued in exchange for all or part of the unused portion of a previously issued ticket.

Reportable flight coupon. A flight coupon in an itinerary in which the carrier examining the coupon is the first participating carrier to lift a flight coupon in the itinerary and from which coupon the examining carrier records the Survey data.

Reporting carrier. The carrier in a given itinerary which has lifted the reportable flight coupon in that itinerary and which carrier is required to record the Survey data for that itinerary for the report to the Department.

Routing. The carrier on each flight-coupon stage in an itinerary and the intermediate points of routing stopover or connection (interline or intraline) in the sequence of occurrence in the movement of the passenger from origin to destination. The routing also includes fare-basis summary codes on each flight-coupon stage, to the extent these are available from the ticket.

Scheduled service. Transport service operated on a certificated large air carrier's routes pursuant to published flight schedules, including extra sections of scheduled flights.

Stage. (See flight-coupon stage.)

Ticketed air carrier. Under a code-share arrangement, the air carrier whose two-character air carrier code is used for a flight segment, whether or not it actually operates the flight segment.

Total dollar value of ticket. The sum of the fare plus tax for the entire ticketed itinerary, in whole U.S. dollars with cents dropped. For a group ticket, the amount is the average per passenger. For fares stated in foreign currency, it is the equivalent in U.S. dollars.

Transfer. (See interline transfer and intraline transfer.)

[Reserved]

The purpose of this part is to set forth required data that certain air carriers must submit to the Department, either themselves or via third party vendors, so that information on air carriers' ticket pricing, passenger volumes, and trip routings can be made available to consumers of air transportation.

For purposes of this part:

Airport see Origin or Destination.

As Sold means to report ticket information as it appears on the ticket at the time the ticket was issued or reissued just prior to first known flown lift usage. For purposes of this part, any change to an existing ticket prior to the first segment being flown that results in a change to the ticket amount should be considered as requiring the ticket to be reissued. Any changes made to the ticket after the first segment is flown or that are incidental to the ticket value should not be considered as requiring the ticket to be reissued. For example, a last-minute schedule change by the carrier to an itinerary before first known flown lift usage that does not result in a change in the amount paid and does not change the intended trip destination should not be considered as a reissued ticket in this context. Partial reissued tickets shall not be included in the collection.

Commuter Air Carrier means a commuter air carrier as defined in 14 CFR 298.2.

Connecting point means an intermediate point in a sequence of travel at which the passenger deplanes from one flight and boards another flight, either on the same carrier or from the flight of one carrier to a flight of another carrier, for continuation of the journey.

Coupon Stage (See Flight-Coupon).

Destination means the airport code or terminus in the ticket sequence of travel where a passenger deplanes from a flight stage. Qualifying airports or terminus will be specified periodically in accounting and reporting directives issued by the OAI. Airport, or terminus, codes are most commonly assigned by the International Air Transport Association (IATA) and occasionally by the International Civil Aviation Organization (ICAO) or the Federal Aviation Administration (FAA) depending on the jurisdiction of the airport. A common private industry source of these industry designator codes is 3rd party schedule products and OAI will use one of these products as a source where possible. Where none exists, OAI will furnish a code upon request.

Dwell Time means scheduled elapsed time (in minutes) between each ticketed coupon. Dwell time is not required to be reported at Via Airport stops. When dwell time exceeds 1,440 minutes, or 24 hours, report “9999”.

Eligible Ticket means a ticket that meets the 40% sampling criteria where the right-most digit is equal to “0” (zero), “2” (two), “7” (seven) or “9” (nine) when following the standard sampling procedure. For ad-hoc procedures, an eligible ticket is any ticket that meets the approved sampling procedure selected.

Flight Coupon means a defined origin and destination for a single stage of flight provided by a single Operating Carrier. Tickets are composed of one or more flight stages, also known as coupons or coupon stages.

First Reporting Carrier Rule means a rule applied during the Reporting Event Evaluation. The rule states that the first Reporting Carrier in the sequence of travel for a Category Two ticket is designated as the carrier responsible for reporting the ticket.

Flown Lift Usage is a record or indicator in the accounting system of the issuing carrier that represents a passenger ticket coupon that has been used by the passenger for travel on a flight.

International Ticket means a ticket that involves an international point and is submitted by a Reporting Carrier, or a ticket submitted under 49 U.S.C. 41308 and 41309 for certain foreign air carriers granted antitrust immunity that includes a Reporting Carrier (or affiliate) operated leg in an itinerary. An international point is a point that resides outside of the 50 States. U.S. possessions are considered International Points.

Issuing Carrier means an air carrier or foreign air carrier that issues an air travel ticket.

Marketing Carrier means the air carrier that markets the seat on the aircraft, regardless of whether it operates the flight segment.

Operating Carrier means the carrier that has operational control over the aircraft that is scheduled to depart from an airport. Under a code-share arrangement, the air carrier whose flight crew are used to perform a flight segment.

Origin means an airport or terminus in the ticket sequence of travel where a passenger boards a flight stage. Qualifying airports or terminus will be specified periodically in accounting and reporting directives issued by the Office of Airline Information. Airport, or terminus, codes are most commonly assigned by the International Air Transport Association (IATA) and occasionally by the International Civil Aviation Organization (ICAO) or the Federal Aviation Administration (FAA) depending on the jurisdiction of the airport. A common private industry source of these industry designator codes is 3rd party schedule products and OAI will use one of these products as a source where possible. Where none exists, OAI will furnish a code upon request.

Purchase Window Group means one of three groups indicating the advance purchase window of the ticket. “21AP” is less than or equal to 21 days prior to departure, “2290” is 22 to 90 days prior to departure, and “91UP” is more than 90 days prior to departure.

Record Identification Number (RIN) means an air carrier assigned number that uniquely identifies each ticket within each reporting period.

Reporting Carrier means the U.S. Certificated Air Carrier or Commuter Air Carrier that is required to report O&D data and reported a given itinerary to the Department.

Reporting Event means the occurrence of a Reporting Carrier recognizing that a ticket has been flown and evaluating the ticket to determine if it should be reported to the O&D.

Reporting Carrier List means a list maintained and published by the Office of Airline Information (OAI). Carriers report O&D data consistent with these regulations, but a carrier is not required to report until OAI adds the carrier to the Reporting Carriers List. Carriers must also determine the responsible reporting carrier for Category Two tickets using the first reporting carrier rule and should use the Reporting Carriers List to determine the responsible reporting carrier.

Reporting Month means the month applicable to the ticket submission.

Reportable Ticket means that the combination of flown lift usage, sampling process criteria, and the Category One and Category Two ticket evaluation determines if a ticket is reportable.

Reporting Year means the year applicable to the ticket submission.

Revenue Passenger has the same meaning as the definition in 14 CFR 241 Section 03—Definitions for Purposes of This System of Accounts and Reports—Passenger, Revenue.

Routing means the sequence of travel for each flight stage including all intermediate points of routing stopover or connection (interline or intraline) in the movement of the passenger from the first airport in the sequence of travel to the last airport in the sequence of travel for the ticket.

Scheduled Flight Month means month for a departure from an airport in the sequence of travel for a ticket.

Scheduled Flight Year means year for a departure from an airport in the sequence of travel for a ticket.

Scheduled Service means transport service held out and operated on a certificated air carrier or commuter carrier's routes pursuant to published flight schedules, including extra sections of scheduled flights.

Tax Amount means all aggregated taxes and fees imposed by the U.S., government entity, or a foreign government, such as, but not limited to, Federal excise taxes, flight segment taxes, U.S. passenger facility surcharges, September 11 security fees, U.S. or international departure and arrival charges, and immigration charges. Taxes and mandatory fees charged by other foreign authorities, such as passenger service charges and airport taxes, are also considered part of Tax Amount.

Ticket means a legal contract between an Issuing Carrier and a Revenue Passenger for transportation.

Total Amount means:

(1) Gross total of funds collected on a ticket by the Issuing Carrier for the transportation of a passenger, inclusive of taxes and fees imposed by non-carrier entities or air carriers, and exclusive of ancillary fees not required to board the plane charged by the air carrier. Factors considered in determining what should be included in the Total Amount are as follows:

(i) Total Amount includes charges required to board the aircraft (domestic and international) that are recognized as revenue at the time of purchase of the ticket and at the time of first lift of the ticket.

(ii) Where a charge assessed at the time of purchase of the ticket is associated with a choice, such as seat assignment, where the consumer must pay the fee or charge regardless of the choice made, the charge is considered part of the Total Amount.

(iii) The Total Amount does not include charges for optional services (services offered which the consumer may choose not to utilize and thus not incur the fee or charge) such as baggage fees, seat upgrade fees, or ticket change fees. When a fee is assessed and there is a no cost option, that fee is considered an ancillary fee. When a fee is assessed for a service that provides something distinct from the air travel product then that fee is considered an ancillary fee.

(iv) The term Total Amount should align with standard passenger ticket documents; however, for air carriers that do not follow such standards or have, or may have, created new fees that may not be included in the standard passenger ticket document and yet are required to be paid to board the aircraft, these must also be included in Total Amount.

(2) Based on the criteria, the following is a non-exhaustive list of carrier-imposed fees and charges that must be reported as part of the Total Amount of the ticket: fuel surcharges, carrier usage charges, carrier interface fees, check-in fees, electronic usage charges, peak/holiday travel fees, transaction processing charges, and credit card surcharge fees. When a customer is assessed a fee based on how the customer acquires a ticket to board the aircraft, a booking fee, the fee is included in the Total Amount. Being required to pay a fee or charge for electronic or phone booking where there is no fee for purchase at the counter must be reported in the Total Amount. Being charged a call center fee for booking by phone when the customer could have booked online at no charge is not an example of a booking fee that must be reported. Carriers must also include all taxes and fees imposed by the U.S. or a foreign government, such as, but not limited to, Federal excise taxes, flight segment taxes, U.S. passenger facility surcharges, September 11 security fees, U.S. or international departure and arrival charges, and immigration charges. Carriers must also include taxes and mandatory fees charged by other foreign authorities, such as passenger service charges and airport taxes.

USD means United States Dollars.

Via Airport (Point(s)) means any point(s) of stopover at intermediate airports as part of a “direct” or “through” flight. These are points that are not usually recorded on a ticket as the passenger does not generally deplane from the aircraft at the intermediate point.

(a) All U.S. certificated and commuter air carriers conducting scheduled passenger services (except helicopter carriers) shall participate in a Passenger Origin-Destination (O&D) Survey covering domestic and international air carrier operations, as prescribed by the Department's Office of Airline Information (OAI) in the instructions manual entitled, Instructions to Air Carriers for Collecting and Reporting Passenger Origin-Destination Survey Statistics and in Passenger Origin-Destination Directives issued by OAI. Copies of these Instructions and Directives are available on the BTS web page and will be provided to each reporting carrier at the time it becomes a reporting carrier.

(b) Air carriers are not required to begin reporting O&D until placed on the Reporting Carrier List that will be published by BTS/OAI 75 days prior to the beginning of each period of reporting. The Reporting Carrier List will identify each U.S. Certificated and Commuter Air Carrier required by this part to report O&D as designated by BTS OAI. Carriers may be added to this list as a result of consideration under this part or under 49 U.S.C. 41308 and 41309 for certain Foreign Air Carriers granted antitrust immunity. Foreign Air Carriers granted antitrust immunity under 49 U.S.C. 41308 and 41309 are not considered Reporting Carriers under this part but do report the same data under different legal authority.

(c) This section applies for air transportation taking place on or after July 1, 2025. Reporting pursuant to section 19-7 of this part is not required for air travel taking place on or after April 1, 2025.

(a) Each reporting carrier must file O&D data with the Bureau of Transportation Statistics Office of Airline Information (BTS/OAI) on a monthly basis for each of its reportable O&D tickets as follows. Collect the ticket information once there is an indication that the ticket has been flown, i.e. first known Flown Lift Usage. Report routing (and other ticket information) As Sold. Reporting carriers must determine the points ticketed and integrate the ticketed information required for reporting. It is at each reporting carrier's discretion whether to use a third-party provider to manage their O&D data submissions. The use of a third-party provider will not remove the responsibility of the reporting carrier to ensure that their data is reported accurately and on schedule.

(b) A statistically valid sample of flight coupons must be selected for reporting purposes. Flight coupons should only be sampled from tickets:

(1) issued for scheduled service itineraries;

(2) issued to revenue passengers who are individually ticketed (i.e. no group tickets, no infants flying without their own tickets); and

(3) that involve a U.S. airport or a U.S. air carrier operation at some point in the scheduled itinerary. The sample must consist of 40 percent of the total lifted ticket flight coupons for all domestic and international markets. Partially reissued tickets, which are tickets issued for changes to an itinerary after the first segment is flown, should not be included in the total lifted ticket flight coupons for all domestic and international markets from which the sample is drawn.

(c) The data recorded and reported from selected lifted flight ticket coupons must include the following information elements:

(1) Reporting Carrier,

(2) Reporting Month and Reporting Year,

(3) Record Identification Number (RIN),

(4) Issuing Carrier,

(5) Total Amount,

(6) Tax Amount,

(7) Airport code,

(8) Operating Carrier code,

(9) Marketing Carrier code,

(10) Scheduled Flight Year,

(11) Scheduled Flight Month,

(12) Dwell Time,

(13) Via Airport (if any),

(14) Purchase Window Group.

(d) Report Total Amount and Tax Amount in United States Dollars (USD) rounded to two decimal places.

(e) A Reporting Event evaluation occurs when a Reporting Carrier's revenue accounting system recognizes that any portion of a ticket has been flown, i.e., first known lift usage. This evaluation will inform the Reporting Carrier if a ticket in their system has been recognized that meets criteria that may require the ticket be reported. Situations may occur where the Reporting Carrier's revenue accounting system identifies a ticket from a flight that occurs after the first flight in the ticket sequence. This may occur when the first flight in the ticket sequence is not used for travel, or the Reporting Carrier's revenue accounting system does not recognize the first flight in the ticket for some other reason. When this occurs, the second (or subsequent) flight is the first known lift usage and becomes the Reporting Event. The Reporting Carrier is responsible for reporting the complete ticket information as it appears at the time of the Reporting Event which should correspond with the information at the time the ticket was sold. Reporting carriers should not report ticket information as flown if the ticket information changes after first known lift usage.

(f) Ticket reporting. (1) A ticket will be reported when:

(i) The criteria of the sampling process are met, and

(ii) The ticket meets either the criteria of a Category One or Category Two ticket.

(A) Category One ticket reporting process. Tickets issued by a Reporting Carrier are known as Category One tickets. These tickets will be reported by the Reporting Carrier if the sampling process criteria conditions are satisfied. The carrier that issues the ticket remains the Reporting Carrier regardless of which flight from the ticket is first recognized by the revenue accounting system as the first flown lift usage.

(B) Category Two ticket reporting process. Tickets issued by carriers that do not appear on the published Reporting Carrier List but are recognized by a carrier that participates on the ticket and is on the Reporting Carrier List are known as Category Two tickets. The examining Reporting Carrier must apply the “First Reporting Carrier” rule: The first carrier in a ticket's sequence of travel that also appears on the Reporting Carrier List is responsible for submitting the ticket to the O&D if the sampling criteria are also met. The first Reporting Carrier in the sequence of a Category Two ticket remains the Reporting Carrier regardless of which flight from the ticket is first recognized by the revenue accounting system. For the purposes of the First Reporting Carrier Rule, any carrier that appears on the Reporting Carrier List is considered a Reporting Carrier.

(iii) Additional provisions for Category Two tickets. Reporting Carriers should use all reasonable efforts to determine the required information from Category Two tickets. If the information for Operating Carrier, Via Airports, Dwell Time, Tax Amount, and Purchase Window Group is unavailable to the Reporting Carrier, however, then leave the fields for which information is unavailable blank. In cases where a carrier is unable to determine Dwell Time between coupons insert a “B” (for Break) in the appropriate dwell time slot where the reporting carrier provides an estimate of where in the itinerary the trip break occurs. Record a surface segment indicator (--, dash dash) where two consecutive stops within the itinerary have no air carrier operator. Record surface segments at the beginning and end of itineraries when the segments are designated with an airline flight number, appear on the ticket, and have a designator code that appears in an airline schedule source.

(g) The primary ticket's right-most digit of the standard ticket document number forms the basis for the random sample size. All required information associated with a primary ticket must be reported, which may include information from a related conjunction ticket. A conjunction ticket is a ticket that is a continuation of a primary ticket itinerary. Conjunction tickets should not be included in the sample process on their own. Any Reporting Carrier that does not assign ticket numbers to passenger journeys, does not assign ticket numbers such that the final, right-most digit is not randomly assigned, or otherwise seeks to use an alternative method must develop an alternative method of creating a valid 40 percent sample. Those Reporting Carriers would need to submit their alternative sample methods to DOT for approval within 90 days of the date that the Reporting Carrier recognizes that it must make use of the alternative sample selection method to comply with the proposed reporting regulation for determining a Reportable Ticket.

Reporting carriers should report individual tickets as separate records where the Record Identifier Number (RIN) uniquely identifies each record in a submission. Except where otherwise noted, all reports required by this part shall be filed within 45 days of the end of the month for which data are reported. The reports should be submitted to the Office of Airline Information in a format specified in the Instructions to Air Carriers for Collecting and Reporting Passenger Origin-Destination Survey Data or accounting and reporting directives issued by BTS/OAI.

(a) Each Reporting Carrier shall maintain its prescribed reportable records in a manner and at such locations as will permit ready accessibility for examination by representatives of DOT. The record retention requirements are prescribed in part 249 of this chapter.

(b) [Reserved]

Any Ticket that is submitted that involves a Reporting Carrier and an International Point providing service in whole or in part under this part are generally not available to the Department, the U.S. carriers, or U.S. interests. Therefore, because of the damaging competitive impact on U.S. carriers and the adverse effect upon the public interest that would result from unilateral disclosure of international ticket survey data that involves a Reporting Carrier, the Department will not disclose international ticket data that involves a Reporting Carrier in the Passenger Origin-Destination Survey to citizens or non-citizens except:

(a) To an air carrier directly participating in and contributing input data to the Survey under this part or to a legal or consulting firm designated by a directly participating air carrier to use on its behalf and in connection with a specific assignment by such carrier;

(b) To parties to any proceeding before the Department to the extent that such data are relevant and material to the issues in the proceeding upon a determination to this effect by the Administrative Law Judge or by the Department's decision-maker. Any data to which access is granted pursuant to this section may be introduced into evidence subject to the normal rules of admissibility of evidence;

(c) To agencies and other components of the U.S. Government;

(d) To other persons upon a showing that the release of the data will serve specifically identified needs of U.S. users which are consistent with U.S. interests; and

(e) To foreign governments and foreign users as provided in formal reciprocal arrangements between the foreign and U.S. Governments for the exchange of comparable O&D data.

(a) Period of coverage by submission. Reporting carriers must file data for each calendar month as shown in Table 1 to paragraph (a).

(b) Filing date for data. Reporting carriers must file data with the Department on or before the dates listed below, 45 days after the end of each reporting period. Reporting carriers must file all data through BTS approved channels as specified in accounting and reporting directives issued by BTS/OAI.

(c) Waiver requests. Requests for permission to depart from the required O&D Survey procedures should include a procedural statement describing the process the carrier proposes to employ in examining, selecting, and editing the data from reportable flight coupons for the O&D Survey, as well as a flow chart diagramming the proposed procedures.

(d) Quantity and quality controls. Carriers are expected to establish and maintain continuous quantity and quality controls on the flow of all lifted flight coupons through their system processes to determine the total number of coupons handled and the number of reportable coupons selected. Such data controls and tests have not been specified by the Department, and necessarily must be developed by each carrier. Each participating carrier shall develop and use on a continuous basis such control tests as are necessary to ensure that all reportable coupons are being selected, recorded, and reported as intended by these regulations, the Instructions to Air Carriers for Collecting and Reporting Passenger Origin—Destination Survey Data, and any related accounting and reporting directives. (Instructions and accounting and reporting directives are available from the Bureau of Transportation Statistics Office of Airline Information. Please visit https://www.bts.gov/ or call 800-853-1351 for more information.) Such controls should extend over all ADP processing, both in-house and that from third-party service providers.

(a) City and airport, or terminus, codes. Prior to submission of O&D, each carrier is to edit the recorded data to validate city and airport or terminus codes. This edit is to verify that the codes recorded are valid official codes, and it is independent of whether the carriers shown operated into or out of the airport or terminus shown. Any questions about airport or terminus codes should be addressed to the Director, Office of Airline Information.

(b) Edit responsibility of carriers. Each carrier is responsible for developing edit procedures and internal controls over its data entry and processing procedures so that valid and reliable data are captured in the O&D inputs. Since the carriers have many different statistical systems, it is not practicable for the Department of Transportation to prescribe specific controls in this area, and each carrier is responsible for developing the appropriate internal control procedures to edit the O&D data and ensure the integrity of these data. The Department will control the accuracy of its processing of the sampled data upon receipt from the carriers or their third-party providers.

(c) System documentation of edits. Carriers are required to maintain written O&D procedural statements and flow charts.

Sample accuracy and reliability. To maximize the accuracy and reliability of the sample selection and data recording, each carrier is to:

(a) Develop a written statement describing the procedures it will employ in examining and selecting reportable flight coupons and in recording, summarizing, editing, and testing the Survey data;

(b) Submit any proposed changes in the procedures specified in paragraph (a) of this section to the Department's Office of Airline Information, prior to implementation of such changes;

(c) Establish continuous quantity controls on the flow of all lifted flight coupons through the carrier's accounting processing to determine the total number of coupons handled, and the number of reportable coupons selected. Tests are to be made continuously to assure that all reportable coupons are being selected and the data recorded. Such tests should be completed while the “lifted” flight coupons (representing earned passenger revenues for flight segments operated) remain in the possession of the carrier. Establish such other internal control procedures as are necessary for supervising and monitoring the accuracy of the recording of data from reportable flight coupons.

The OAI staff will review the carrier procedures and practices and may request modifications or the use of special procedures necessary to improve the sample or to bolster the controls for accuracy and reliability.

(a) Each large certificated air carrier shall file with the BTS, monthly, quarterly, semiannually, and annually BTS Form 41 Reports of financial and operating statistics as prescribed herein unless waiver has been made by the BTS.

(b) The system prescribed provides for the submission by each air carrier of four classes of financial and operating statistics, on individual schedules of the BTS Form 41 Report, grouped as follows:

(c) The prescribed system of reports provides that the frequency of reporting shall be monthly for some schedules, quarterly for some, semiannually for some and annually for others. It also provides in some areas for the classification of large certificated air carriers into Group I, Group II, and Group III with the form and content differentiated as between groups.

(d) Each schedule of the prescribed BTS Form 41 Report has been assigned a specific code. The prefix alphabetical codes A, B, P and T, respectively, have been employed to denote certification, balance sheet, profit and loss, and traffic and capacity. The digits immediately following the alphabetical prefix designate the particular schedule.

(e) [Reserved]

(f) [Reserved]

(g) Four separate air carrier entities shall be established for large certificated air carriers conducting scheduled service for the purpose of submitting the prescribed reports. They are as follows: (1) Domestic operations; (2) operations via the Atlantic Ocean; (3) operations via the Pacific Ocean; and (4) operations in Latin American areas. With respect to the first classification, the domestic entity shall embrace all operations within and between the 50 States of the United States, the District of Columbia, the Commonwealth of Puerto Rico and the U.S. Virgin Islands, and shall also include Canadian transborder operations. The reports to be submitted by each entity shall be comparable to those required of a distinct legal entity whether the reporting entity constitutes such an entity, a semiautonomous physically separated operating division of the carrier, or an entity established for reporting purposes only.

(h) Two separate entities shall be established for large certificated air carriers predominantly engaged in conducting charter activities for the purpose of submitting the prescribed reports: (1) Domestic operations; and (2) international operations. The domestic entity includes all operations within and between the 50 States of the United States, the District of Columbia, the Commonwealth of Puerto Rico, and the U.S. Virgin Islands. All other operations will be in the international entity.

(i) The entities for which separate reports shall be made by the different route and charter air carriers will be set semiannually by the Office of Airline Information.

(j) As a general rule separate reports shall be filed for the air carrier and for each associated company air carriers as defined in section 03 which is an air carrier. However, transactions of associated companies in which 100 percent equity control resides in the reporting air carrier shall be consolidated with transactions of the reporting air carrier when such associated companies perform services related to the transport operations of the reporting air carrier almost exclusively and are not engaged in air transportation for their own account.

(k) Generally, route air carriers' nonscheduled services shall be treated as an integral part of the reporting entity to which most closely related without regard to the geographic area in which such nonscheduled services may actually be performed. However, supplemental reports shall be made of nonscheduled services (including service for the Department of Defense) in areas not encompassed by the prescribed reporting entity in any month in which the available ton-miles of such nonscheduled services exceed 5 percent of the available ton-miles of the reporting entity. Such supplemental reports shall continue until waived by the BTS upon a showing that such nonscheduled operations will not in the subsequent 12-month period exceed the 5-percent limit. The supplemental reports to be filed each month or calendar quarter, as applicable, shall be comprised of report Schedules P-5, T-1, and T-2. Transport and nontransport revenues pertaining to such separately reported nonscheduled services shall be reported on Schedule P-2 each quarter.

(l) When and as required in the national interest, any air carrier which performs nonscheduled transport services for the Department of Defense shall, when directed by the Department, make separate reports for such services as if they were conducted by a physically separate transport entity, such reports shall consist of Schedules P-1 through P-7, T-1, and T-2. The letter “D” shall be inserted on such reports, following the schedule number of each P and T schedule. When a carrier has more than one reporting entity, nonscheduled transport and nonscheduled Defense services shall be assigned to the reporting entity to which more closely related.

(a) One copy of each schedule in the BTS Form 41 report shall be filed with the BTS and shall be received on or before the due date indicated for each such schedule in the list titled “Due Dates of Schedules in BTS Form 41 Report.”

(b) Each large certificated air carrier shall file the applicable schedules of the BTS Form 41 Report with the BTS in accordance with the above instructions with the following exceptions:

(1) The time for filing B and P report schedules for the final quarter or semiannual period of each calendar year may be extended to the following March 30 if the preliminary Schedules B-1 or B-1.1 and P-1.1 or P-1.2 are submitted, as applicable, and are received on or before their respective due dates.

(2) For the third month of any calendar quarter, Schedule P-1(a) need not be filed if Schedule P-1.1 or P-1.2 for the quarter or semiannual period, as applicable, is received on the due date prescribed for Schedule P-1(a).

(3) Income and expense data on Schedule P-1(a) for each month will be withheld by the BTS from public disclosure, until such time as (i) the semiannual or quarterly financial reports are due, (ii) the semiannual or quarterly financial reports are filed, or (iii) information covered by monthly reports is publicly released by the carrier concerned, whichever occurs first. Before that time, income and expense data reported on Schedule P-1(a) will be disclosed to parties to any proceeding before the DOT to the extent that such data are relevant and material to the issues in the proceeding upon a determination to this effect by the administrative law judge assigned to the case or by the DOT. Any data to which access is granted may be introduced into evidence, subject to the normal rules of admissibility of evidence. The DOT will make other disclosure of these data upon its own motion or upon application of any interested person, when the DOT finds the public interest so requires. The BTS may, from time to time, publish summary information compiled from Schedule P-1(a) in a form which will not identify the individual carrier. At the request of an air carrier, and upon a showing by such air carriers that public disclosure of its preliminary year-end report would adversely affect its interests and would not be in the public interest, the BTS will withhold such preliminary year-end report from public disclosure until such time as (i) the final report is filed, (ii) the final report is due, or (iii) information covered by the preliminary report is publicly released by the carrier concerned, whichever occurs first.

(c) If circumstances prevent the filing of a report on or before the prescribed due date, consideration will be given to the granting of an extension upon receipt of a written request therefor. To provide ample time for consideration and communication to the air carrier of the action taken, such a request must be delivered to the BTS in writing at least three (3) days in advance of the due date, setting forth good and sufficient reason to justify the granting of the extension and the date when the report can be filed. Except in cases of emergency, no such request will be entertained which is not in writing and received by the BTS at least three (3) days before the prescribed due date. If a request is denied, the air carrier remains subject to the filing requirements to the same extent as if no request for extension of time had been made.

(d) [Reserved]

(e) All financial data reported on B, P and G schedules shall reflect the status of the air carrier's books of account for the period for which the report is being made and shall conform to the instructions contained in this Uniform System of Accounts and Reports. At the option of the air carrier, Group III air carriers may round reported financial data to the nearest thousands of dollars by typing “($000)” at the top of each amount column. All Group I and Group II air carriers may, at their option, round reported financial data to the nearest whole dollars by dropping the cents. All rounded amounts must be balanced within and between schedules. This option applies only to the submission of hardcopy reports. Instructions for the submission of data in ADP format are contained in the Accounting and Reporting Directives, which are available from OAI.

(f) Traffic and other operational statistics included in schedules of the BTS Form 41 reports shall reflect data pertaining to the month, quarter or 12-months-to-date period for which the report is being made.

(g) Adjustments correcting errors in previously reported traffic and other operational statistics shall not be included in data reported in schedules for the current period but shall be effected by submission of corrected schedules for the period to which applicable or, if only a few items are involved, by written notice and authorization to the BTS to correct previously filed reports except that any correction which amounts to less than one-half of one percent (0.5%) of the corrected amount for the month to which related may be included in the report for the current month provided the amount of the correction is clearly noted on the Form 41 Report.

(h) All letters and statements of correction or revision of reported data shall be a part of the BTS Form 41 reports.

(i) All changes in accounting methods having a material impact upon the particular financial elements involved, and all changes in methods of computing and reporting traffic and capacity statistics having a material impact upon the particular statistic involved shall be adequately explained and identified in the report first reflecting such changes. Such explanations related to financial position or financial results shall be made on BTS Form 41 Schedule P-2. Changes in methods for computing or reporting traffic and capacity statistics shall be identified and explained on a separate sheet attached to the first report affected. (See sec. 2-16.) The reporting requirements shall not be construed, in any sense, as relieving the air carrier of the responsibility for conforming its procedures to those otherwise prescribed in this system of accounts and reports.

(j) All financial statements released by carriers to the public reflecting a financial position or operating results for dates or reporting periods not covered by reports on file with the BTS shall be filed with the Board simultaneously with their public release.