; funding for safety research and development. Sec. 1004. National aviation research plan modification. Sec. 1005. Advanced Materials Center of Excellence enhancements. Sec. 1006. Center of Excellence for Unmanned Aircraft Systems. Sec. 1007. ASSUREd Safe credentialing authority. Sec. 1008. CLEEN engine and airframe technology partnership. Sec. 1009. High-speed flight testing. Sec. 1010. High-speed aircraft pathway to integration study. Sec. 1011. Operating high-speed flights in high altitude Class E airspace. Sec. 1012. Electric propulsion aircraft operations study. Sec. 1013. Contract weather observers program. Sec. 1014. Airfield pavement technology program. Sec. 1015. Review of FAA management of research and development. Sec. 1016. Research and development of FAA’s aeronautical information systems modernization activities. Sec. 1017. Center of Excellence for Alternative Jet Fuels and Environment. Sec. 1018. Next generation radio altimeters. Sec. 1019. Hydrogen aviation strategy. Sec. 1020. Aviation fuel systems. Sec. 1021. Air traffic surveillance over United States controlled oceanic airspace and other remote locations. Sec. 1022. Aviation weather technology review. Sec. 1023. Air traffic surface operations safety. Sec. 1024. Technology review of artificial intelligence and machine learning technologies. Sec. 1025. Research plan for commercial supersonic research. Sec. 1026. Electromagnetic spectrum research and development. Sec. 1027. Research plan on the remote tower program. Sec. 1028. Air traffic control training. Sec. 1029. Report on aviation cybersecurity directives. Sec. 1030. Turbulence research and development. Sec. 1031. Rule of construction regarding collaborations. Sec. 1032. Limitation. Subtitle B—Unmanned Aircraft Systems and Advanced Air Mobility Sec. 1041. Definitions. Sec. 1042. Interagency working group. Sec. 1043. Strategic research plan. Sec. 1044. Federal Aviation Administration unmanned aircraft system and advanced air mobility research and development. Sec. 1045. Partnerships for