Accident Summary
The accident occurred when the pilot flew into a canyon and attempted a climb-out gradient that was beyond the aircraft's performance capabilities. The aircraft subsequently collided with the rising terrain. The pilot reported experiencing a downdraft at the accident site and stated that he turned away from the terrain just before the collision. However, surviving passengers did not recall any turbulence or sinking sensation prior to the crash. The pilot did not report any turbulence or downdrafts at any other location.
Two passengers were killed in the accident.
Investigation Findings
An investigation into the accident identified several factors contributing to the event. The terrain was mountainous and hilly. The pilot's in-flight planning and decision-making were deemed improper. Additionally, the aircraft's climb capability was exceeded by the required gradient. The pilot failed to maintain adequate clearance from the terrain, and a proper climb rate was not achievable given the conditions.
Official Probable Cause
The official probable cause, as determined by the investigation, includes the following findings:
- Terrain condition: mountainous/hilly
- In-flight planning/decision: improper (pilot in command)
- Aircraft performance, climb capability: exceeded
- Clearance: inadequate (pilot in command)
- Proper climb rate: not possible (pilot in command)