; and (2) allow a transport category aircraft to taxi without the use of the main engines of the aircraft. (b) Briefing If the Administrator conducts a study under subsection (a), the Administrator shall provide a briefing to the appropriate committees of Congress on the results of such study. 767. PFAS-related resources for airports (a) PFAS replacement program for airports Not later than 90 days after the date of enactment of this Act, the Secretary, in consultation with the Administrator of the Environmental Protection Agency, shall establish a program to reimburse sponsors of eligible airports for the reasonable and appropriate costs incurred after September 12, 2023, and associated with any of the following: (1) The one-time initial acquisition by the sponsor of an eligible airport of an approved fluorine-free firefighting agent under Military Specification MIL–PRE–32725, dated January 12, 2023, in a quantity of— (A) the capacity of all required aircraft rescue and firefighting equipment listed in the most recent FAA-approved Airport Certification Manual, regardless of how the equipment was initially acquired