(a) Fuel tanks must be located in accordance with § 121.255.
(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.
authority: 49 U.S.C. 106(f), 106(g), 40103, 40113, 40119, 41706, 42301 preceding note added by Pub. L. 112-95, sec. 412, 126 Stat. 89, 44101, 44701-44702, 44705, 44709-44711, 44713, 44716-44717, 44722, 44729, 44732; 46105; Pub. L. 111-216, 124 Stat. 2348 (
49 U.S.C. 44701 note); Pub. L. 112-95, 126 Stat. 62 (
49 U.S.C. 44732 note); Pub. L. 115-254, 132 Stat. 3186 (
49 U.S.C. 44701 note)
cite as: 14 CFR 121.229