Training Manual, 20mm M2 Automatic Aircraft Cannon Spanish the manual is in very

the manual is in very good condition given its age

In between when the landing gear is unlocked

There is a crack on the rim/ring

the C-9A tachometer was used in fighters P-40 Warhawk (E-N)

is "AC US Army" (Air Corps US Army)

Training Manual, 20mm M2 Automatic Aircraft Cannon Spanish the manual is in veryThis is an original WWII era training manual for the Oldsmobile manufactured 20mm M2 Automatic Cannon. This manual was used in the training of armorers in the US Army Air Force and the US Navy. The 20mm M2 cannon was installed in the P 38 Lightning, the tail position of the B 29 Bomber, P 61 Black Widow, and the F6F 5N Hellcat. This 68 page manual describes the gun and its subassemblies, service and maintenance, and parts list. It is in reasonably