What happened
The aircraft was conducting a long straight-in approach to the airport when it collided with the terrain. The impact occurred approximately two miles short of the runway threshold. At the time of the accident, the weather conditions were characterized by whiteout snow, which severely limited visibility and visual references.
Following the incident, the pilot provided an account of the events leading up to the collision. The pilot stated that the whiteout conditions eliminated ground vegetation, which normally provides critical depth perception cues for judging distance and altitude during final approach. Without these visual landmarks, the pilot relied entirely on the aircraft's instruments. Specifically, the pilot reported maintaining a constant indicated altitude using the altimeter throughout the final segment of the approach.
The investigation
Investigation into the mechanical condition of the aircraft was not detailed in the provided source text. No specific maintenance records or post-accident examination results are available in this record.
Findings
The primary factor contributing to the accident was the whiteout snow conditions, which removed natural visual references necessary for spatial orientation. The pilot's reliance on the altimeter alone, without external visual cues, proved insufficient to prevent controlled flight into terrain under these specific meteorological circumstances.