Fire protection of flight controls, engine mounts, and other flight structure.
Essential flight controls, engine mounts, and other flight structures located in designated fire zones or in adjacent areas which would be subjected to the effects of fire in the fire zone must be constructed of fireproof material or shielded so that they are capable of withstanding the effects of fire.
[Amdt. 25-23, 35 FR 5676, Apr. 8, 1970]