; and (5) other duties determined appropriate by the Administrator. (d) Reports (1) In general Not later than 1 year after the date of establishment of the Advisory Committee, the Advisory Committee shall submit to the Administrator a report on any recommended changes to current aviation noise policies. (2) Report to Congress Not later than 180 days after the date the Administrator receives the report under paragraph (1), the Administrator shall submit to the appropriate committees of Congress a report containing the recommendations made by the Advisory Committee. (e) Congressional briefing Not later than 30 days after submission of the report under paragraph (2), the Administrator shall brief the appropriate committees of Congress on how the Administrator plans to implement recommendations contained in the report and, for each recommendation that the Administrator does not plan to implement, the Administrator’s reason for not implementing the recommendation. 918. Next generation radio altimeters (a) In general Not later than 60 days after the date of enactment of this section, the Administrator, in coordination with the aviation and commercial wireless industries, the National Telecommunications and Information Administration, the Federal Communications Commission, and other relevant government stakeholders, shall carry out a research and development program to assist with the development, testing, and certification of the standards and technology necessary to ensure industry and the FAA can certify and meet the installation requirements for next generation radio altimeters across all necessary aircraft by January 1, 2028. (b) Grant program Subject to appropriations, the Administrator may award grants for the purposes of research and development, testing, and other activities necessary to ensure that next generation radio altimeter technology is developed, tested, certified, and installed on necessary aircraft by 2028, including through public-private partnership grants (which shall include protections for