In 1965, through the complete Vietnam war, the outstanding load capability from CH-47 Chinook led the U.S. Army to request a greatly armed variation to produce support the AH-1 Cobra. The initial journey happened on 6th November associated with identical year and, in-may 1966, four forms of these heavy Chinooks, assigned on very first Air Cavalry Division, was indeed stationed through An Khe base for studies. Because of hefty 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 hefty armour to shield both group and helicopterthe ACH-47 proved impressive in a ground troop support part. Nevertheless, because of the complexity through aircraft together with pushing reliance on transportation variations for the Chinook, the U.S. Army halted more development.
