Spanish civil engineer and pilot Juan de la Cierva’s autogyro, which was a precursor to the helicopter, makes its first successful flight. De la Cierva’s autogyro made him world famous, and he used his invention to support fascist general Francisco Franco when the Spanish Civil War broke out in July 1936. De la Cierva was dead by December of that same year, perishing, ironically, in a plane crash in Croydon, England.