The ACH-47A "Guns A Go-Go" were four armed CH-47A Chinook helicopters that were produced to evaluate if CH-47s can be used as gunships. The four helicopters were nicknamed "Co$t of Living", "Easy Money", "Stump Jumper" and "Birth Control".
Three of the helicopters were brought to Vietnam in April 1966 for field-evaluation with the 53rd Aviation Detachment while "Co$t of Living" stayed in the USA for further tests and followed in August.
The helicopters were equipped with the M5 Armament Subsystem. This system was a belt-fed M75 40mm grenade launcher in a flexible chin-mounted turret (similar to the UH-1 version).
Shown below is the XM32 Armament Subsystem with a M2 cal. 50 machinegun mounted in the window, a M35 Armament Subsystem with a M195 20mm gun mounted on the outside of the winglet and a XM159 19-tube rocket launcher for 2.74 inch rockets mounted below.
A XM33 Armament Subsystem with a M2 cal. 50 machinegun was mounted on the backramp.
Unfortunately the programm was canceled after three of the four helicopters were lost. "Stumper Jumper" had a ground accident, "Co$t of Living" and "Birth Control" were shot down and after that "Easy Money" was converted back to a standard CH-47A because it was not allowed to serve alone.
Here is a video about the helicopters in use over the Australian area of operations where they normally were used.
If you want additional informations on these helicopters you may visit the following two links.
All infos and pictures are gather from various sources found in the net. I tried to use pictures that are not explicitly copyright protected and resized/reworked some of them to fit this short overview.
If you have any additonal infos, corrections, questions, complaints etc., please post them here in this topic. Thank you!
anyone know why this program didn't go any further?
too vulnerable because of the 'short' range on the .50 compared to AA fire or just too expensive to operate??
Chinooks too valuable as a transport asset?
I wonder what would happen if you tried this with modern tech!
20mm turret under the nose, hellfires, 2 20mm cannons firing from the side ... w0000i
Were those birds even used in combat ?
kudos to you for all these posts, all very informative, almost too much information even
i had never seen this chinook before, cant imagine it doing a run
Found another interesting vid of this helicopters...