What happened
During a scheduled one-hour commercial sightseeing flight over Denali National Park and Preserve, an aircraft carrying a pilot and four passengers crashed into a mountainside. Approximately 48 minutes into the flight, an emergency locator transmitter alert was received by the Alaska Rescue Coordination Center. Shortly thereafter, the pilot contacted company personnel to report that the plane had struck a mountain.
Search efforts were hampered by severe weather, and the wreckage was not found for nearly 36 hours. The debris was eventually located within a glacier crevasse at an elevation of approximately 10,920 feet. Due to the extreme terrain, including steep slopes, avalanche risks, and the location of the wreckage in a crevasse, the five fatalities and the aircraft could not be recovered from the site. Subsequent observations by the National Park Service noted that a massive glacier calving event occurred months after the accident, which likely moved or buried the wreckage further down the fall line.
Findings
Analysis of the wreckage and local weather data indicated that the right wing of the aircraft had struck snow while the plane was in a wings-level attitude, causing the wing to separate from the fuselage. Meteorological data showed low cloud bases and overcast conditions, with icing levels present in the area. It is believed that the pilot encountered reduced visibility and failed to identify the terrain before the impact.
Operational reviews of the company revealed that management did not always have specific knowledge of the flight paths chosen by pilots, as routes were left to the pilot's discretion based on weather. Furthermore, the company lacked a formal risk assessment protocol, instead relying on informal communications between pilots and flight followers. While the evidence is consistent with a controlled flight into terrain, the lack of wreckage recovery and the inability to perform an autopsy prevented a definitive determination of all contributing factors.