In 1965, through the entire Vietnam war, the outstanding load ability from the CH-47 Chinook led the U.S. Army to request a greatly armed variation to provide assistance the AH-1 Cobra. The initial journey occurred on 6th November of the identical 12 months and, in-may 1966, four kinds of these heavy Chinooks, assigned on first Air Cavalry Division, had been stationed through the An Khe base for studies. Due to heavy armaments, including a 40 mm XM-5 grenade launcher, two 20 mm M-24 cannon, five 12.7 mm M-2 device firearms and two hook-up points for rocket launchers or other loads-plus heavy armour to shield both group and helicopterthe ACH-47 proved impressive in a ground troop assistance part. Nevertheless, due to the complexity through the aircraft together with pushing dependence on transport variations of the Chinook, the U.S. Army halted more development.
