Circumstances
Four pilots departed Oklahoma City-Will Rogers Airport for a local training flight. While cruising at a low height, between 200 and 500 feet, the airplane entered a dive and crashed into a canyon located in Mustang, approximately six miles west of Will Rogers Airport. The aircraft was destroyed in the accident, and all four occupants were killed.
Probable Cause
The official investigation determined that the probable cause was the pilot's failure to maintain flying speed during a VMC demonstration maneuver, combined with conducting the demonstration flight at an excessively low altitude.