The C-47 and R4D derivatives of Douglas DC-3 transports were the main stay of the United States Troop
Carrier Command and other Allied air forces during World War II and were lauded by General Dwight
Eisenhower as one of the four most important pieces of equipment in the war.
Douglas - now McDonnell Douglas -
built 10,147 military models of the DC-3 in plants in
California and Oklahoma
At peak, the mass production rate was 1.8 aircraft per hour.