What happened
The pilot-in-command was operating an aircraft in a mountainous region where he had no prior experience with the specific terrain. Prior to attempting the crossing, he was explicitly advised that the weather conditions within the pass were extremely poor. Despite these warnings, the pilot decided to proceed and visually inspect the conditions himself.
The topography of the pass presented significant navigational challenges, featuring a sharp 'S' turn at the summit that spanned less than one mile of horizontal distance. While attempting to navigate this tight maneuver, the airplane collided with the side of the mountain near the middle of the curve.
The investigation
Investigation into the incident revealed critical context regarding the atmospheric conditions at the time of the accident. A separate pilot had reported weather conditions in the pass 15 to 20 minutes prior to the crash, stating that the pass was effectively closed due to the severity of the weather. This information was available but did not prevent the subsequent flight attempt.
Findings
The primary factors contributing to this accident included the pilot's lack of familiarity with the specific mountain pass and the decision to proceed despite clear warnings about the hazardous weather. The complex terrain, characterized by a tight turn in close proximity to steep slopes, left little margin for error when visibility was compromised by the reported poor conditions.