The first D-558-I Skystreak, Bureau No. 37970, was the Douglas contractor-flight article that began the straight-wing transonic research programme on 14 April 1947 with pilot Eugene F. May.
The first D-558-I Skystreak, Bureau No. 37970, was the Douglas contractor-flight article that began the straight-wing transonic research programme on 14 April 1947 with pilot Eugene F. May.