In 1946, the Gyrodyne company acquired rights to the Bendix Model J and developed it into the GCA-2. N74101 was reportedly the same airframe as the Bendix J prototype, N74102. The aircraft was reworked again in 1949 as the GCA-2A Helidyne compound helicopter with auxiliary engines on outriggers. Testing took place at small Fitzmaurice Field on Long Island. Photo from: Vertical Flight Society
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