In 1965, through the complete Vietnam war, the outstanding load capability from CH-47 Chinook led the U.S. Army to request a significantly armed variation to produce support the AH-1 Cobra. The first journey happened on 6th November connected with identical 12 months and, in-may 1966, four kinds of these hefty Chinooks, assigned on very first Air Cavalry Division, ended up being indeed stationed through An Khe base for studies. Due to hefty armaments, including a 40 mm XM-5 grenade launcher, two 20 mm M-24 cannon, five 12.7 mm M-2 unit firearms and two hook-up points for rocket launchers or other loads-plus hefty armour to shield both group and helicopterthe ACH-47 proved impressive in a ground troop help component. Nevertheless, because of the complexity through aircraft together with pressing reliance on transport variants the Chinook, the U.S. Army halted more development.
