MIL-T-6396E, MILITARY SPECIFICATION: TANKS, AIRCRAFT PROPULSION FLUID SYSTEM, INTERNAL REMOVABLE, NON-SELF-SEALING (30 AUG 1983) [S/S BY MIL-DTL-6396F]., This specification covers internal removable, non-self-sealing,propulsion fluid system tanks, including tank fittings, for use on aircraft.