This Special Airworthiness Information Bulletin (SAIB) advises aircraft operators, fixed base operators, Federal Aviation Administration (FAA) repair stations, Flight Standards District Offices (FSDO), and Foreign Civil Aviation Authorities to report to the FAA any issues (service difficulties, maintenance) related to the use of unleaded fuel when used as an alternative to any other fuels. The FAA has not identified an unsafe condition that would warrant airworthiness directive action under Title 14 of the Code of Federal Regulations (14 CFR) part 39.
Please read SAIB 2025-04 attached for more information.
/ckfinder/userfiles/files/SAIB_2025-04.pdf
