14 C.F.R. § 29.861 Fire protection of structure, controls, and other parts.
Title 14 - Aeronautics and Space
Each part of the structure, controls, and the rotor mechanism, and other parts essential to controlled landing and (for category A) flight that would be affected by powerplant fires must be isolated under §29.1191, or must be— (a) For category A rotorcraft, fireproof; and (b) For Category B rotorcraft, fireproof or protected so that they can perform their essential functions for at least 5 minutes under any foreseeable powerplant fire conditions. [Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 27–26, 55 FR 8005, Mar. 6, 1990]
Title 14: Aeronautics and Space
PART 29—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT
Subpart D—Design and Construction
Fire Protection
§ 29.861 Fire protection of structure, controls, and other parts.