The total amounts which shall be available after September 30, 2003, to the Secretary of Transportation out of the Airport and Airway Trust Fund established under section 9502 of the Internal Revenue Code of 1986 (
26 U.S.C.
9502) to make grants for airport planning and airport development under section
47104 of this title, airport noise compatibility planning under section
47505
(a)(2) of this title, and carrying out noise compatibility programs under section
47504
(c) of this title shall be—
Such sums shall remain available until expended.