Delivery of First CH-47A to US Army, 1962

Delivery of First CH-47A to US Army, 1962

Boeing-Vertol Factory, 1965

Boeing Vertol YHC-1B Flight Demonstration, 1961

Boeing Vertol YHC-1B Flight Demonstration, 1961

Piasecki H-21 Flight Testing

Boeing Vertol YCH-1B Taxi Tests, 1961

Boeing Vertol YCH-1B Chinook Towing Tests, 1961

Boeing Vertol YCH-1B Chinook Towing Tests, 1961

Boeing Vertol Model 107-II in Action, 1960s

Boeing Vertol Model 107-II in Action, 1960s

V-22 Osprey Transitions to Horizontal Flight

V-22 Osprey Transitions to Horizontal Flight

Boeing Vertol CH-47A Chinook in Action, 1960s

Boeing Vertol CH-47A Chinook in Action, 1960s

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Boeing Vertol YUH-61 UTTAS Delivery Ceremony 1976

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The Boeing-Vertol 179/237/YUH-61A was a competitor in the 1970s UTTAS program to choose a utility helicopter for the US Army. It was Boeing's first design with a single main rotor. The first protoype was flown on November 29, 1974. Three aircraft were delivered to the US Army for evaluation in 1976.

BI44684 (BIV14_YUH-61_01)

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720px × 480px (~42 MB)

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2m0s

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Model 179/YUH-61