Question Mark (aircraft) Question Mark (aircraft) Question Mark (""?"") was a modified Atlantic-Fokker C-2A transport airplane of the United States Army Air Corps. In 1929, commanded by Major Carl A. Spaatz, it was flown for a flight endurance record as part of an experiment with aerial refueling. "Question Mark" established new world records in aviation for sustained flight (heavier-than-air), refueled flight, sustained flight (lighter-than-air), and distance between January 1 and January 7, 1929, in a non-stop flight of more than 150 hours near Los Angeles, California. Following the record-setting demonstration, the C-2A was returned to transport duties. In 1931 more powerful engines replaced
1929 24 Hours of Le Mans all seven of the Le Mans through the 1920s, all for Bentley and including the distance victory in 1924. Feeling very pleased with his consecutive victories, Barnato loaned Bentley another £25000. In August, the innovative supercharging pioneer René Cozette was killed making a speed-record attempt when he crashed at 200 kp/h at Montlhéry.In November, Kidston was badly burned when he was the sole survivor in an air-crash in England of a Luft Hansa passenger flight. Results taken from Quentin Spurring's book, officially licensed by the ACO Class Winners are in Bold text. 1929 24 Hours of Le Mans The 1929