The AC-47 was a United States Air Force version of the DC-3 that had been modified by mounting three .80cm miniguns to fire through two rear window openings and the side cargo door, all on the left side of the aircraft. Its primary function was close air support for ground troops ...The AC-47 was a United States Air Force version of the DC-3 that had been modified by mounting three .80cm miniguns to fire through two rear window openings and the side cargo door, all on the left side of the aircraft. Its primary function was close air support for ground troops.
It could orbit the target for hours providing suppressing fire. The plane carried 24,000 rounds of minigun ammunition and flares, which it could drop to light up the battleground.