; or (2) the date on which the American Society for Testing and Materials publishes a production specification for an unleaded aviation gasoline. (c) Type certification Existing regulatory mechanisms by which an unleaded aviation gasoline can be approved for use in an engine or aircraft by Type or Supplemental Type Certificate for individual aircraft and engine types or by Approved Model List Supplemental Type Certificate providing coverage for a broad range of applicable types of aircraft or engines identified in the application shall continue to be fully available as a means of approving and bringing an unleaded aviation gasoline into general use in the United States. Such approvals shall be issued when the Administrator finds that the aircraft or engine performs properly and meets the applicable regulations and minimum standards under the normal certification process. 566. Right to privacy when using air traffic control system Notwithstanding any other provision of law, the Administrator 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. 567. Federal Aviation Administration workforce review (a) In general Not later than 120 days after the date of enactment of this Act, the Comptroller General of the United States shall conduct a review to assess the workforce and training needs of the FAA in the anticipated budgetary environment. (b) Contents In conducting the review, the Comptroller General shall— (1) identify the long-term workforce and training needs of the FAA workforce; (2) assess the impact of automation, digitalization, and artificial intelligence on the FAA workforce; (3) analyze the skills and qualifications required of the FAA workforce for successful performance in the current and future projected aviation environment