For the purpose of this part:

Cancelled flight means a flight operation that was not operated, but was listed in a carrier's computer reservation system within seven calendar days of the scheduled departure.

Discontinued flight means a flight dropped from a carrier's computer reservation system more than seven calendar days before its scheduled departure.

Diverted flight means a flight which is operated from the scheduled origin point to a point other than the scheduled destination point in the carrier's published schedule. For example, a carrier has a published schedule for a flight from A to B to C. If the carrier were to actually fly an A to C operation, the A to B segment is a diverted flight, and the B to C segment is a cancelled flight.

Extra-section flight means a flight conducted as an integral part of scheduled passenger service, that has not been provided for in published schedules and is required for transportation of traffic that cannot be accommodated on the regularly scheduled flight.

Flight means any nonstop scheduled passenger flight segment with a specific flight number scheduled to be operated pursuant to a published schedule within a specific origin-destination city pair, other than transborder or foreign air transportation. In the case of reporting to computer reservations system vendors, flight also means one-stop or multi-stop single plane scheduled operations that include any flight segments for which performance is reported pursuant to this part.

Late or late flight means a flight that arrives at the gate 15 minutes or more after its published arrival time.

Mishandled-baggage report means a report filed with a carrier by or on behalf of a passenger that claims loss, delay, damage or pilferage of baggage.

Mishandled checked bag means a checked bag that is lost, delayed, damaged or pilfered, as reported to a carrier by or on behalf of a passenger.

New flight means a flight added to a carrier's schedule to operate in a specific origin-destination city pair and not scheduled to depart within 30 minutes of any discontinued flight that was contained in the carrier's published schedules for the same city pair during the previous month.

On-time means a flight that arrives less than 15 mintues after its published arrival time.

On-time performance means the percentage of scheduled operations of a specific flight that an air carrier operates on-time during a month.

On-time performance code means a single character determined in accordance with the provisions of this part that reflects the monthly on-time performance of certain nonstop flights and single plane one-stop or multi-stop flights, the schedule and availability of which are listed in a computer reservation system (CRS) regulated by 14 CFR part 255.

Reportable flight. (1) Reportable flight for air transportation taking place before January 1, 2018 means any nonstop flight, including a mechanically delayed flight, to or from any airport within the contiguous 48 states that accounts for at least 1 percent of domestic scheduled-passenger enplanements in the previous calendar year, as reported to the Department pursuant to part 241 of this title. Qualifying airports will be specified periodically in accounting and reporting directives issued by the Office of Airline Information.

(2) Reportable flight for air transportation taking place on or after January 1, 2018 means any domestic nonstop scheduled passenger flight, including a mechanically delayed flight, held out to the public under the reporting carrier's code, to or from any U.S. large, medium, small, or non-hub airport as defined in 49 U.S.C. 47102. Qualifying airports will be specified periodically in accounting and reporting directives issued by the Office of Airline Information.

Reporting carrier. (1) Reporting carrier for air transportation taking place before January 1, 2018 means an air carrier certificated under 49 U.S.C. 41102 that accounted for at least 1 percent of domestic scheduled-passenger revenues in the most recently reported 12-month period as defined by the Department's Office of Airline Information, and as reported to the Department pursuant to part 241 of this title. Reporting carriers will be identified periodically in accounting and reporting directives issued by the Office of Airline Information.

(2) Reporting carrier for air transportation taking place on or after January 1, 2018 means an air carrier certificated under 49 U.S.C. 41102 that accounted for at least 0.5 percent of domestic scheduled-passenger revenus in the most recently reported 12-month period as defined by the Department's Office of Airline Information, and as reported to the Department pursuant to part 241 of this chapter. Reporting carriers will be identified periodically in accounting and reporting directives issued by the Office of Airline Information.