; and (3) by adding at the end the following new paragraph: (4) Exception The requirement under paragraph (1) that an eligible air traffic system or equipment be purchased in part using a Government airport aid program, airport development aid program, or airport improvement project grant shall not apply if the air traffic system or equipment is installed at an airport that is categorized as a basic or local general aviation airport under the most recently published national plan of integrated airport systems under section 47103. . 649. Consideration of small hub control towers In selecting projects for the replacement of Federally-owned air traffic control towers from funds made available pursuant to title VIII of division J of the Infrastructure Investment and Jobs Act ( Public Law 117–58 ) under the heading Federal Aviation Administration—Facilities and Equipment , the Administrator shall consider selecting projects at small hub commercial service airports with control towers that are at least 50 years old. 650. Codification of FAA notice of policy relating to addressing disputed changes of sponsorship at Federally obligated, publicly owned airports The notice of policy of the FAA entitled Notice of Policy on Evaluating Disputed Changes of Sponsorship at Federally Obligated Airports (81 Fed. Reg. 36144 (June 6, 2016)) is enacted into law. 651. Eligible revenue-producing facilities at rural public-use general aviation airports The Administrator shall not restrict funding for eligible revenue-producing facilities at rural public use general aviation airports. Any such facilities shall be identified in the airport’s master plan. 652. Increasing the energy efficiency of airport power sources (a) In general Section 47140 of title 49, United States Code, is amended— (1) in subsection (a), by inserting after the first sentence the following new sentence: To the maximum extent practicable, the Secretary shall provide technical assistance to the sponsor of each public-use airport to consider the ability of