The CAA issues the first US civil helicopter safety standards

Tuesday, February 16, 1943



The Civil Aeronautics Bureau (CAA) issued document "Aircraft Engineering Division Report No. 32, Proposed Rotor-plane Airworthiness ". This document provided the technical basis for issuing the Type Certificates to the world's first commerially certificated helicopters,

Bell Model 47, TC No. H-1 issued May 8, 1946

Sikorsky Model S-51, TC No. H-2 issued April 17, 1947

Source: Development of Civil Helicopter Airworthiness Standards, Burdell L. Springer, Journal of the American Helicopter Society, Vol. 1,No. 1, January 1956, Page 72


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