; (4) analyze how much funding from the airport improvement program (AIP) has gone to meet the requirements of large hub airports over the past 10 years; and (5) project how much AIP funding would be available to meet the requirements of large hub airports in the next 5 years if funding levels are held constant. (e) Report Not later than 15 months after the date of enactment of this Act, the qualified organization shall submit to the Secretary and the appropriate committees of Congress a report on the results of the study described in subsection (a), including its findings and recommendations related to each item in subsections (c) and (d). (f) Definition of qualified organization In this section, the term qualified organization means an independent nonprofit organization that recommends solutions to public policy challenges through objective analysis. 123. Intermodal access projects Not later than 6 months after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall, after consideration of all public comments, publish in the Federal Register a final policy amendment consistent with the notice published in the Federal Register on May 3, 2016 (81 Fed. Reg. 26611). C Airport Improvement Program Modifications 131. Grant assurances Section 47107 of title 49, United States Code, is amended— (1) in subsection (a)(17), by striking each contract and inserting if any phase of such project has received funds under this subchapter, each contract ; (2) in subsection (r)(3), by striking 2018 and inserting 2023 ; and (3) by adding at the end the following: (u) Construction of recreational aircraft (1) In general The construction of a covered aircraft shall be treated as an aeronautical activity for purposes of— (A) determining an airport’s compliance with a grant assurance made under this section or any other provision of law