Atwater CA Castle Air Museum C-47 (#0018)

A C-47, the military version of the Douglas DC-3. The DC-3 and C-47 airplanes were used extensively in WWII through to the Vietnam War, are still in use by some overseas military, and were quite common in civilian passenger and cargo service for many years. In the 1980's they were still in use in the US by regional or commuter airlines (I've flown in them twice that I can remember). Over 10,000 were built.