MIL-T-5091/3, MILITARY SPECIFICATION: TRANSMISSION, POWER, CONSTANT RATIO, GEARBOX, ENGINE MOUNTED, 47 HP, GENERAL SPECIFICATION (AIRCRAFT USE) (06-JUN-1965) [NO S/S DOCUMENT]
MIL-T-5091/3, MILITARY SPECIFICATION: TRANSMISSION, POWER, CONSTANT RATIO, GEARBOX, ENGINE MOUNTED, 47 HP, GENERAL SPECIFICATION (AIRCRAFT USE) (06-JUN-1965) [NO S/S DOCUMENT].