Douglas C-133 Cargomaster

The Douglas C-133 Cargomaster was an American large turboprop cargo aircraft built between 1956 and 1961 by the Douglas Aircraft Company for the United States Air Force. It was the Air Force only production turboprop strategic airlifter, entering service shortly after the Lockheed C-130 Hercules, and it carried many large loads including Atlas and Titan missiles. It went directly into production as the C-133A with no prototypes, and the first Cargomaster flew on 23 April 1956, with the first deliveries to the Military Air Transport Service in August 1957. Obsolete and worn out by 1971, all were withdrawn from service as the Lockheed C-5 Galaxy arrived.