MIL-D-81956A, MILITARY SPECIFICATION: DETERGENT, EXTERNAL REMOVABLE FUEL TANKS (03-JUL-1980) [S/S BY MIL-PRF-85570]

MIL-D-81956A, MILITARY SPECIFICATION: DETERGENT, EXTERNAL REMOVABLE FUEL TANKS (03-JUL-1980) [S/S BY MIL-PRF-85570]., This specification covers a water soluble, oil dispersing nonionic detergent used for cleaning aircraft removable fuel tanks.