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The Douglas C-133 Cargomaster was an American four-engined strategic airlifter manufactured by the Douglas Aircraft Company.


Design work on the C-133 began when the United States Air Force issued a requirement in the early 1950s for a new strategic airlifter. No prototypes were built, with the aircraft instead going straight into production as the C-133A. It first flew on April 23rd, 1956 and entered service in August 1957 with the Military Air Transport Service. 50 Cargomasters were built between the aircraft's two variants (C-133A and C-133B). They were used to transport ICBMs and rockets for the NASA's space program, and saw service during the Vietnam War. At the time of its introduction, the C-133 was the largest transporter America had, but it was soon outclassed by the C-141 Starlifter and C-5 Galaxy.  Due to this, and the aircraft deteriorating in condition, all were retired by 1971.


  • Powerplant: four Pratt & Whitney T34-P-9W engines
  • Maximum speed: 359 mph
  • Range: 4,097 miles
  • Ceiling: 32,300 feet
  • Crew: 6
  • Capacity: 110,000 lbs
  • Empty weight: 109,417 lbs
  • Length: 157 feet 6 inches
  • Height: 48 feet 3 inches
  • Wingspan: 179 feet 8 inches