5 fatalities

Controlled Flight into Terrain in Denali National Park (N6331H)

Denali National Park, United States of AmericaFlight

On June 23, 1981, a Cessna 207 Skywagon/Stationair (registration N6331H) operated by Wilbur's Flight Operations was involved in an aviation accident near Denali National Park, United States of America in flight. 5 people were killed. Investigators recorded the probable cause as: Controlled collision with ground due to improper in-flight decisions on part of the pilot. Contributing factors: the pilot misjudged distance, speed, altitude or clearance; flew into blind canyon; high density altitude; peaks obscured by clouds. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 4 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

A single-engine airplane on a charter flight in Denali National Park struck cloud-obscured peaks and crashed, killing all five occupants.

Accident Details

A single-engine airplane departed Anchorage on an on-demand charter flight over Denali National Park, carrying one pilot and four tourists. While flying between 8,000 and 13,000 feet near the circular end of a box canyon, the pilot flew into a blind canyon. The airplane struck peaks obscured by clouds and crashed. The wreckage was found a few hours later; all five occupants were killed.

Investigation Findings

The probable cause of the accident was determined to be a controlled collision with ground due to improper in-flight decisions on the part of the pilot. Contributing factors reported include: the pilot misjudged distance, speed, altitude, or clearance; flew into a blind canyon; high density altitude; and peaks obscured by clouds.