including through public-private partnership grants (which shall include protections for necessary intellectual property with respect to any private sector entity testing, certifying, or producing next generation radio altimeters under the program carried out under this section) with industry to ensure the accelerated production and installation by January 1, 2028. (c) Review and report Not later than 180 days after the enactment of this Act, the Administrator shall submit to the covered committees of Congress and the Committee on Transportation and Infrastructure of the House of Representatives a report on the steps the Administrator has taken as of the date on which such report is submitted and any actions the Administrator plans to take, including as part of the program carried out under this section, to ensure that next generation radio altimeter technology is developed, tested, certified, and installed by 2028. (d) Rule of construction Nothing in this section shall be construed to apply to efforts to retrofit the existing supply of altimeters in place as of the date of enactment of this Act. 1019. Hydrogen aviation strategy (a) FAA and Department of Energy leadership on using hydrogen to propel commercial aircraft The Secretary, acting through the Administrator and jointly with the Secretary of Energy, shall exercise leadership in and shall conduct research and development activities relating to enabling the safe use of hydrogen in civil aviation, including the safe and efficient use and sourcing of hydrogen to propel commercial aircraft. (b) Research strategy Not later than 1 year after the date of enactment of this Act, the Administrator, in consultation with the Administrator of NASA and other relevant Federal agencies, shall complete the development of a research and development strategy on the safe use of hydrogen in civil aviation. (c) Considerations The strategy developed under subsection (b) shall consider the following: (1) The feasibility, opportunities, challenges, and pathways toward the