14 C.F.R. § 125.127 Location of fuel tanks.
Title 14 - Aeronautics and Space
(a) Fuel tanks must be located in accordance with §125.153. (b) No part of the engine nacelle skin that lies immediately behind a major air outlet from the engine compartment may be used as the wall of an integral tank. (c) Fuel tanks must be isolated from personnel compartments by means of fume- and fuel-proof enclosures.
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
§ 125.127 Location of fuel tanks.
