MIL-T-45379D (NOTICE 1), MILITARY SPECIFICATION: TANK, COMBAT, FULL-TRACKED, 105MM GUN, M60A3-TTS (13 DEC 1996) [SUPERSEDING M60PD-T-62289B & MIL-T-45379C] [NO S/S DOCUMENT]., MIL-T-45379D(AT) is inactivated for new design and is no longer used by the Army except for reprocurement purposes.