Oct. 1, Oswego, Ill. / Lima Lima Flying Squadron Collision

At 16:00 CDT, two Beech D-45s (T-34s), part of the Lima Lima Flying Squadron, collided during a practice flight. One aircraft crashed, killing the pilot. The other was damaged but made a safe landing at Aurora Municipal Airport. The airplanes were part of a six-ship delta formation performing a non-aerobatic maneuver called a pop top break.