14 C.F.R. § 125.151 Powerplant fire protection.
Title 14 - Aeronautics and Space
(a) Designated fire zones must be protected from fire by compliance with §§125.153 through 125.159. (b) Designated fire zones are— (1) Engine accessory sections; (2) Installations where no isolation is provided between the engine and accessory compartment; and (3) Areas that contain auxiliary power units, fuel-burning heaters, and other combustion equipment.
Title 14: Aeronautics and Space
PART 125—CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT
Subpart E—Special Airworthiness Requirements
§ 125.151 Powerplant fire protection.
