In any fiscal year through fiscal year 2018, if the amount described in paragraph (1) is appropriated, there is further authorized to be appropriated from the general fund of the Treasury such sums as may be necessary for the Federal Aviation Administration Operations account.

The term “estimated level of receipts plus interest” means the level of excise taxes and interest credited to the Airport and Airway Trust Fund under section 9502 of the Internal Revenue Code of 1986 for a fiscal year as set forth in the President’s budget baseline projection as defined in section 257 of the Balanced Budget and Emergency Deficit Control Act of 1985 (Public Law 99–177) (Treasury identification code 20–8103–0–7–402) for that fiscal year submitted pursuant to section 1105 of title 31, United States Code.

It shall not be in order in the House of Representatives or the Senate to consider any bill, joint resolution, amendment, motion, or conference report that would cause total budget resources in a fiscal year for aviation investment programs described in subsection (b) to be less than the amount required by subsection (a)(1)(A) for such fiscal year.

It shall not be in order in the House of Representatives or the Senate to consider any bill, joint resolution, amendment, motion, or conference report that provides an appropriation (or any amendment thereto) for any fiscal year through fiscal year 2018 for Research and Development or Operations if the sum of the obligation limitation for Grants-in-Aid for Airports and the appropriation for Facilities and Equipment for such fiscal year is below the sum of the authorized levels for Grants-in-Aid for Airports and for Facilities and Equipment for such fiscal year.