The FAA today published a Notice of Issuance of Advisory Circular for Advisory Circular (AC) 33.75-1, Guidance Material for 14 CFR 33.75, Safety Analysis. The AC sets forth acceptable methods of compliance with the safety analysis requirements of 14 CFR 33.75 relating to turbine aircraft engines. Specifically, 14 CFR 33.75 requires that “any probable malfunction or any probable single or multiple failure, or any probable improper operation of the engine will not cause the engine to: (a) Catch fire; (b) Burst (release hazardous fragments through the engine case); (c) Generate loads greater than those ultimate loads specified in §33.23(a); or (d) Lose the capability of being shut down.”
As with other AC’s, the “material is neither mandatory nor regulatory in nature and does not constitute a regulation. It describes acceptable means, but not the only means, for demonstrating compliance with the applicable regulations.” The AC was issued by the Engine and Propeller Directorate, ANE-100, on March 4, 2005. If you have questions regarding the AC, you can contact Ann Azevedo at the FAA, ANE-104, 12 New England Executive Park, Burlington, MA 01803-5299; telephone: (781) 238-7117; fax: (781) 238-7199; e-mail:Ann.Azevedo@faa.gov.