; ; (2) in paragraph (20), by striking and after the semicolon; (3) in paragraph (21), by striking the period at the end and inserting a semicolon; and (4) by inserting after paragraph (21), the following: (22) the airport owner or operator will require a fixed based operator, which operates at the airport and also operates facilities at 3 or more additional public-use airports where fuel, parking, and other related services are offered to general aviation aircraft, will publicly disclose on a continuous basis all its prices and fees for the use of its services, products, and facilities at the airport and that the disclosure will— (A) be made in an open and conspicuous manner; (B) be made available at the point of purchase, in print, and on the internet; and (C) include all retail, discounted, or other such prices and fees charged and whether such prices and fees are accepted as payment in full for the products, services, and facilities furnished to airport users; (23) the airport owner or operator will not impose unreasonable fees for transient aircraft parking that exceed the airport’s cost to operate and maintain the area where such transient aircraft may park; and (24) the airport owner or operator will continue to make available to general aviation aircraft all types of fuel, which were available to such aircraft at that airport at any time during calendar year 2022, until the earlier of— (A) December 31, 2030; or (B) the date on which a replacement for 100 octane Low Lead aviation gas for use by piston-driven aircraft is widely available for use, as determined by the Secretary. . 621. Civil penalties for grant assurances violations Section 46301(a) of title 49, United States Code, is amended— (1) in paragraph (1)(A), by inserting section 47107(a)(7) (including any assurance made under such section), section 47107(a)(24) (including any assurance made under such section), after chapter 451,