Winning Their Wings: Advanced Flying School Advanced flying school prepared a cadet for the kind of single- or multi-engine airplane he was to fly in combat. Those who went to single-engine school flew AT-6s for the first 70 hours during a nine-week period, learning aerial gunnery and combat maneuvers and increasing their skills in navigation, formation and instrument flying. Cadets assigned to twin-engine school received the same number of flying hours but did not practice combat aerobatics or gunnery. Using the AT-9, AT-10 or AT-17, they directed their efforts toward mastering the art of flying a multi-engine plane in formation and increasing their ability to fly on instruments at night. Upon completing advanced flying school, the cadet received his wings and commission. Click here to return to the AAF Training During WWII Overview. Find Out More Related Fact Sheets Curtiss AT-9 Jeep/Fledgling Beech AT-10 Wichita Note: The appearance of hyperlinks does not constitute endorsement by the National Museum of the USAF, the U.S. Air Force, or the Department of Defense, of the external website, or the information, products or services contained therein.