Overview
The accident occurred shortly after takeoff when the aircraft made contact with electrical wires and trees. Subsequently, the aircraft descended uncontrollably and impacted the terrain. The crash resulted in fatal injuries to both occupants.
Wreckage Examination
Examination of the wreckage revealed that the elevator trim actuator rod was extended 2.5 inches, corresponding to a full nose-down trim setting. Further inspection showed that the buss wire for the actuator retract switch was disconnected at the retract switch post. Splattered copper on the switch indicated that the wire had been subjected to high amperage. The pilot operating handbook for the aircraft type did not prohibit takeoff with an inoperative pitch trim system.
Probable Cause
The official probable cause findings listed multiple factors: loss of control during initial climb due to total failure of the elevator trim/tab control system; a disconnected and overheated electrical wire; the pilot not performing the trim setting; and improper transition/upgrade training. Contributing environmental conditions included weather obscuration, fog, and night light conditions. Additionally, the aircraft struck trees and wires before impacting terrain.