; and (B) sequencing aircraft equipped with certain NextGen avionics ahead of other aircraft in the Traffic Flow Management System to the maximum extent consistent with safety. (e) Sunset The pilot program established under subsection (a) shall terminate on September 30, 2023. (f) Report Not later than 90 days after the date on which the pilot program terminates, the Administrator shall submit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a report on the results of the pilot program. 561. NextGen delivery study (a) Study Not later than 180 days after the enactment of this Act, the Inspector General of the Department of Transportation shall initiate a study of the potential impacts of a significantly delayed, significantly diminished, or completely failed delivery of the Next Generation Air Transportation System modernization initiative by the Federal Aviation Administration, including impacts to the air traffic control system and the national airspace system as a whole. (b) Scope of study In carrying out the study under subsection (a), the Inspector General shall assess the Administration’s performance related to the Next Generation Air Transportation System modernization initiative, including— (1) the potential impacts on the operational efficiency of our aviation system; (2) an analysis of potential economic losses and stranded investments directly related to NextGen; (3) an analysis of the potential impacts to our international competitiveness in aviation innovation; (4) an analysis of the main differences that would be seen in our air traffic control system; (5) the potential impacts on the flying public, including potential impacts to flight times, fares, and delays in the air and on the ground; (6) the effects on supply chains reliant on air transportation of cargo; (7) the potential impacts on the long-term benefits promised by NextGen