; and (4) hydrogen combustion engines or propulsion systems. (b) Considerations In providing the findings and recommendations under subsection (a), the Committee shall consider the following: (1) Broad, outcome-driven safety objectives that will spur innovation and technology adoption, and promote the development of performance-based regulations. (2) Lessons and insights learned from previously published FAA special conditions and other Federal Register notices of airworthiness certification criteria for advanced air mobility engines, propellers, and aircraft. (3) The requirements of part 33 and part 35 of title 14, Code of Federal Regulations, any boundaries of applicability for stand alone engine type certificates (including highly integrated systems), and the use of technical standards order authorizations. (c) Report Not later than 2 years after the date on which the Committee is established under subsection (a), the Committee shall submit to the Administrator and the appropriate committees of Congress a report containing the findings and recommendations described in subsection (a). (d) Briefing Not later than 180 days after the date on which the Committee submits the report under subsection (c), the Administrator shall brief the appropriate committees of Congress regarding the FAA’s plans in response to the findings and recommendations contained in the report. (e) Safety cooperation The Administrator shall lead efforts to engage with foreign authorities to further harmonize standards for certification and installation of the products described in paragraphs (1) through (4) of subsection (a). IX RESEARCH AND DEVELOPMENT AND INNOVATIVE AVIATION TECHNOLOGIES 901. Advanced materials center of excellence enhancements Section 44518 of title 49, United States Code, is amended— (1) in subsection (a), by striking under its structure and all that follows through the period and inserting through September 30, 2028, under its structure as in effect on March 1, 2023, which shall focus on applied research and training on