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The Boeing 367-80, the prototype for both the Boeing 707 and C-135 series, takes its first flight.
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Boeing 367-80
1954 American quadjet prototype aircraft
The Boeing 367-80, also known as the Dash 80, is a retired American four-engined prototype jet aircraft by Boeing to demonstrate the advantages of jet propulsion for commercial aviation. It served as basis for the design of the KC-135 tanker and the 707 airliner.Source: Wikipedia (CC BY-SA)
Boeing 707
Four-engined single-aisle airliner family by Boeing
The Boeing 707 is an early American long-range narrow-body airliner, the first jetliner developed and produced by Boeing Commercial Airplanes. Developed from the Boeing 367-80 prototype, the initial 707-120 first flew on December 20, 1957. Pan Am began regular 707 service on…Source: Wikipedia (CC BY-SA)
Boeing C-135 Stratolifter
Military transport aircraft by Boeing
The Boeing C-135 Stratolifter is a transport aircraft derived from the prototype Boeing 367-80 jet airliner in the early 1950s. It has a narrower fuselage and is shorter than the 707. Boeing gave the aircraft the internal designation of Model 717, a name later assigned to a…Source: Wikipedia (CC BY-SA)