What happened
Following departure from Shui-Nan Airport, the aircraft's number one engine began to overspeed. In response to this mechanical failure, the pilot attempted to execute a left turn to facilitate an emergency landing at either Taichung Airport or the nearby Kung-Kuan Military Air Base.
During this maneuver, the aircraft entered a steep nose-low attitude with the left wing positioned low. The flight ended when the aircraft impacted the ground. There were no survivors reported from the crash.
Findings
The investigation focused on the sequence of events following the engine malfunction. The accident occurred in an area situated between Shui-Nan Airport and the Kung-Kuan Military Air Base, with a mountain range located to the right of the standard flight pattern.
Investigators determined that the abruptness of the left turn performed to reach an emergency landing site caused the pilot to lose control of the aircraft. The loss of control during this high-stress maneuver led directly to the impact.