Incident Overview
Two airline transport pilots were flying over mountainous terrain at an estimated altitude of 1,500 to 2,000 feet above ground level. The pilot-in-command turned the aircraft into a narrow valley, which rose to a ridgeline at its end. Noting the rising terrain, the pilot initiated a slow full power climb as they approached the ridgeline.
Performance and Maneuver
During the climb, the pilot reported that the aircraft's performance seemed to decline. Determining that they would not have sufficient altitude to clear the terrain, the pilot began a turn to the left to reverse course. However, the engine did not have enough power to complete the turn before the aircraft collided with the terrain.
Post-Accident Inspection
A post-accident inspection of the aircraft and engine revealed no evidence of a mechanical failure or malfunction.
Analysis
The source provides no explicit analysis or probable cause beyond the pilot's report of declining performance and insufficient engine power. No mechanical issues were identified.