The Walter HWK 109-509 powered the first piloted aircraft of any type to exceed how many MPH in level flight?
Messerschmitt Me 163 Komet The Messerschmitt Me 163 Komet was a German rocket-powered fighter aircraft. Designed by Alexander Lippisch, it is the only rocket-powered fighter aircraft ever to have been operational and the first piloted aircraft of any type to exceed 1000 km/h (621 mph) in level flight. Its design was revolutionary and its performance unprecedented. German test pilot Heini Dittmar in early July 1944 reached 1130 km/h , an unofficial flight airspeed record unmatched by turbojet-powered aircraft for almost a decade. Over 300 aircraft were built, but the Komet proved ineffective in its dedicated role as an interceptor aircraft and was responsible for the destruction of only about nine to eighteen Allied aircraft against ten losses. Aside from combat losses many pilots were killed during testing and training.
Dick Merrill Henry Tyndall "Dick" Merrill (February 1, 1894 – October 31, 1982) was an early aviation pioneer. Among his feats he was the highest paid air mail pilot, flew the first round-trip transatlantic flight in 1936, was Dwight D. Eisenhower's personal pilot during the 1952 presidential elections, set several speed records, and would go on to be Eastern Air Lines' most experienced pilot with over 36,000 hours until his retirement in 1961. In total, Merrill flew over 45,000 hours as pilot in command, covering over eight million miles.