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
Bobbi Trout official dedication on December 14, 1928. Trout followed this up on January 2, 1929, flying from the same airport for 12 hours and 11 minutes, shattering the previous record, held by Viola Gentry, by more than 4 hours. This record was short lived, as aviator Elinor Smith broke the record once again on January 30, 1929. Smith flew 13 and a half hours straight from Mitchel Field using an open cockpit, Bruner Winkle biplane. Determined to take back the record, Trout flew from Mines Field on February 10, 1929, returning this time after more than 17 hours. This flight also