First flight of an Enstrom helicopter, the F-27
Monday, October 31, 1960
Description
The exact day is unknown and will be updated. Source(s): [1] Paul Lamberton, Anthony Pirie. Helicopters & Autogyros of the World, 2nd Ed. A.S. Barnes and Company, Inc. (1970). Page 265. [2] Enstrom Helicopter | History
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