aircraft H-4 History Howard Hughes spruce goose Why The Spruce Goose Only Flew Once Guest authors April 27, 2024 0 The largest seaplane, the largest wooden aircraft, and the largest propeller plane ever built, flew only once, in 1947.
Air Force aircraft experimental planes F-35 H-4 Military north america History: Five US-Built Demonstrator Aircraft That Never Made It Into Serial Production Guest authors April 16, 2024 0 Some of the US Air Force’s most remarkable and ambitious aircraft to fly never went into serial production.