Accident Overview
A twin-engine airplane departed Tucson-Ryan Airport on a local post-maintenance flight with one pilot and one mechanic on board. During the initial climb, the aircraft went out of control and crashed in flames in a field. Both occupants were killed.
Investigation Findings
The official investigation determined that the probable cause of the accident was airframe failure during climb due to inadequate maintenance and inspection. Several contributing factors were reported: missing attachments on the elevator assembly, including bolts missing from the elevators; flutter; overload failure; failure of elevator push-pull tube rivets; and twisted elevator and stabilizers due to overload.
Sequence of Events
The flight was intended as a local test flight following maintenance. Shortly after departure, while climbing, the aircraft lost control. The ensuing impact and fire resulted in the destruction of the airplane and fatal injuries to both persons on board. The exact time of day and weather conditions were not specified in the source.
Analysis
No analysis beyond the stated probable cause and contributing factors is available from the source. The investigation focused on the mechanical condition of the elevator control system and the quality of the preceding maintenance. The missing bolts and failed rivets indicate a lack of proper inspection and assembly procedures.