; program extension. Subtitle B—Advanced Air Mobility Sec. 831. Sense of Congress on FAA leadership. Sec. 832. Aviation Rulemaking Committee on certification of powered-lift aircraft. Sec. 833. Application of National Environmental Policy Act (NEPA) categorical exclusions for vertiport projects. Sec. 834. Advanced Air Mobility Working Group amendments. Sec. 835. Rules for operation of powered-lift aircraft. Sec. 836. International coordination on powered-lift aircraft. Sec. 837. Advanced air mobility propulsion systems aviation rulemaking committee. TITLE IX—RESEARCH AND DEVELOPMENT AND INNOVATIVE AVIATION TECHNOLOGIES Sec. 901. Advanced materials center of excellence enhancements. Sec. 902. Center of excellence for unmanned aircraft systems. Sec. 903. ASSUREd safe credentialing authority. Sec. 904. FAA and NASA advanced aviation technologies pilot program. Sec. 905. Advancing global leadership on civil supersonic aircraft. Sec. 906. CLEEN engine and airframe technology partnership. Sec. 907. Hypersonic and Supersonic flight testing. Sec. 908. Hypersonic pathway to integration study. Sec. 909. Operating high-speed flights in high altitude Class E airspace. Sec. 910. Electric propulsion aircraft operations study. Sec. 911. Contract weather observers program. Sec. 912. Airfield pavement technology program. Sec. 913. National aviation research plan modification. Sec. 914. FAA and NASA research and development coordination review. Sec. 915. Research and development of FAA's aeronautical information systems modernization activities. Sec. 916. Center of Excellence for Alternative Jet Fuels and Environment. Sec. 917. Aircraft Noise Advisory Committee. Sec. 918. Next generation radio altimeters. Sec. 919. Hydrogen aviation strategy. Sec. 920. Aviation fuel systems. TITLE X—MISCELLANEOUS Sec. 1001. Authorization for carriage reimbursement. Sec. 1002. Clarifying minimum altitudes for go-arounds, inspection passes, practice approaches, and instrument approaches. Sec. 1003. Let Me Travel America. Sec. 1004. Transportation of