; or (2) the date of publication of an American Society for Testing and Materials Production Specification for an unleaded aviation gasoline. (c) Sense of Congress It is the sense of Congress that the Piston Aviation Fuels Initiative of the Administration and the American Society for Testing and Materials should work to find an appropriate unleaded aviation gasoline by January 1, 2024. 505. Right to privacy when using air traffic control system Notwithstanding any other provision of law, the Administrator of the Federal Aviation Administration shall, upon request of a private aircraft owner or operator, block the registration number of the aircraft of the owner or operator from any public dissemination or display, except in data made available to a Government agency, for the noncommercial flights of the owner or operator. 506. Air shows On an annual basis, the Administrator of the Federal Aviation Administration shall work with representatives of Administration-approved air shows, the general aviation community, and stadiums and other large outdoor events and venues to identify and resolve, to the maximum extent practicable, scheduling conflicts between Administration-approved air shows and large outdoor events and venues where— (1) flight restrictions will be imposed pursuant to section 521 of title V of division F of Public Law 108–199 (118 Stat. 343)