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
150 personae non gratae of Turkey 150 personae non gratae of Turkey The 150 personae non gratae of Turkey () is a list of high-ranking personages of the Ottoman Empire who were exiled from the Republic of Turkey shortly after the end of the Turkish War of Independence with the Armistice of Mudanya on 11 October 1922. The Sultanate was abolished by the Grand National Assembly of Turkey in Ankara on 1 November 1922, and the last Ottoman Sultan, Mehmed VI, was declared "persona non grata". Leaving Istanbul aboard the British warship HMS "Malaya" on 17 November 1922, he went into exile and died in Sanremo,