U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
(a) Flight controls, engine mounts, and other flight structures within or adjacent to designated fire zones must be capable of withstanding the effects of a fire.
(b) Engines in a designated fire zone must remain attached to the airplane in the event of a fire.
(c) In designated fire zones, terminals, equipment, and electrical cables used during emergency procedures must be fire-resistant.