*No Variant assigned
Cessna CH-1 Skyhook
Cessna CH-1B/YH-41 Skyhook
Cessna CH-1C Skyhook
July 31, 1954
First flight of the Cessna CH-1 Skyhook
June 30, 1955
First in-flight use of Boundary Layer Control (BLC) on a helicopter
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