not complete the air traffic modernization project known as the NextGen program by the deadline specified in subsection (a), the Administrator shall transfer the residual functions for completing the NextGen program to the Airspace Modernization Office of the FAA established under section 207. (d) Transfer of NextGen Advisory Committee Not later than December 31, 2025, management of the NextGen Advisory Committee shall transfer to the Chief Operating Officer of the air traffic control system. (e) Transfer of advanced air mobility functions Not later than 90 days after the date of enactment of this Act, any advanced air mobility relevant functions, duties, and responsibilities of the NAS Systems Engineering and Integration Office or other offices within the Office of NextGen of the FAA shall be incorporated into the Office of Aviation Safety of the FAA. (f) Remaining activities In carrying out subsection (a), and after implementing subsections (c) through (e), the Administrator shall transfer any remaining duties, authorities, activities, personnel, and assets managed by the Office of NextGen of the FAA to other offices of the FAA, as appropriate. (g) Technical center for advanced aerospace Section 106 of title 49, United States Code, is further amended by striking subsection (h) and inserting the following: (h) Technical center for advanced aerospace (1) In general There is established within the Administration a technology center to support the advancement of aerospace safety and innovation which shall be known as the William J. Hughes Technical Center for Advanced Aerospace (in this subsection referred to as the Technical Center ) that shall be used by the Administrator and, as permitted by the Administrator, other governmental entities, academia, and the aerospace industry. (2) Management The activities of the Technical Center shall be managed by a Director. (3) Activities The activities of the Technical Center shall include— (A) developing and stimulating technology partnerships with and between industry,