Kellett KD-1

Kellett KD-1
Kellett XR-3 modification of YG-1B (KD-1) of U.S. Army preserved at Yanks Air Museum, Chino airfield California, in February 2016
Role Autogyro
National origin United States
Manufacturer Kellett Autogiro Company
First flight 1934
Primary users United States Army Air Forces
Eastern Airlines
Developed into Kayaba Ka-1/Ka-2

The Kellett KD-1 is a 1930s American autogyro built by the Kellett Autogiro Company. It had the distinction of being the first practical rotary-wing aircraft used by the United States Army and inaugurated the first scheduled air-mail service using a rotary-wing aircraft.

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