Boeing B-17 Flying Fortress foreign aircraft landing on Swiss territory and 56 aircraft crashing there. In October 1943 the Swiss interned Boeing B-17F-25-VE, tail number 25841, and its U.S. flight crew after the Flying Fortress developed engine trouble after a raid over Germany and was forced to land. The aircraft was turned over to the Swiss Air Force, who then flew the bomber until the end of the war, using other interned but non-airworthy B-17s for spare parts. The bomber was repainted a dark olive drab, but retained its light gray-painted under surfaces. It carried Swiss national white cross insignia in red squares on
31st Flying Training Wing (World War II) for most of its operational service, it controlled contract pilot schools primarily in the Central United States. Until 1939, the Army Air Corps provided all flying training with military instructor pilots. Beginning in 1939, it contracted with nine civilian flying schools to provide primary flight training. Primary training consisted of a three-month course of 65 hours of flying instruction. As the United States prepared to enter World War II by expanding its number of flying squadrons, the number of contract primary schools increased. According to the contract, the government supplied students with training aircraft, flying clothes, textbooks, and equipment. The