14 CFR 23.865 : Aeronautics And Space (§ 1.1 To Parts 1311-1399) — (§ 1.1 To Parts 50-59) — Federal Aviation Administration, Department Of Transportation (§ 1.1 To Parts 50-59) — Aircraft (§ 21.1 To Parts 50-59) — Airworthiness Standards: Normal, Utility, Acrobatic, And Commuter Category Airplanes (§ 23.1 To Appendix J To Part 23) — Design And Construction (§ 23.601 To § 23.871) — Fire Protection (§ 23.851 To § 23.865) — Fire protection of flight controls, engine mounts, and other flight structure.

4 Aug 2016

Flight controls, engine mounts, and other flight structure located in designated fire zones, or in adjacent areas that would be subjected to the effects of fire in the designated fire zones, must be constructed of fireproof material or be shielded so that they are capable of withstanding the effects of a fire. Engine vibration isolators must incorporate suitable features to ensure that the engine is retained if the non-fireproof portions of the isolators deteriorate from the effects of a fire.

14 CFR 23.865
[Doc. No. 27805, 61 FR 5148, Feb. 9, 1996]