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20-24D - Approval of Propulsion Fuels, Additives, and Lubricating Oils

Date Issued
June 30, 2014
Responsible Office
AIR-20,  Aviation Fuel Program

This advisory circular (AC) provides guidance applicable to adding fuels and oils as engine, aircraft, or auxiliary power unit (APU) operating limitations. It also provides guidance on fuel and lubricating oil specifications and standards, and on propulsion fuel and/or lubricating oil certification plans. This AC provides acceptable methods, but not the only methods, that may be used to approve aircraft, engines, or APUs to operate with specified propulsion fuels and lubricating oils.