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 report: the U.S. National Transportation Safety Board (NTSB) historical archive (1962-1981)Updated 2026-07-04Data 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.

Frequently asked questions

What happened in the 23 Jun 1981 Cessna 207 Skywagon/Stationair accident near Denali National Park, United States of America?

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

Were there any fatalities in the 23 Jun 1981 Cessna 207 Skywagon/Stationair accident?

The accident was fatal, resulting in 5 fatalities.

What aircraft was involved and where did it happen?

The accident on 23 Jun 1981 involved a Cessna 207 Skywagon/Stationair, registration N6331H, operated by Wilbur's Flight Operations, at Denali National Park, United States of America.

What was the probable cause of the accident?

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.