Casualties unknown

Private Pilot and Passenger in Mountain Pass Accident (N836KA)

Skwentna, AK, US

On September 16, 2006, a DE Havilland DHC-2 (registration N836KA) operated by Alex T. Stack was involved in an aviation accident near Skwentna, AK. Investigators recorded the probable cause as: The pilot's continued VFR flight into instrument meteorological conditions, which resulted in an in-flight collision with mountainous terrain. A factor associated with the accident was a low cloud ceiling. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-10Data APIEditorial standards

A private pilot and sole passenger were in the first of two airplanes when weather deteriorated in a mountain pass. The pilot of the second airplane turned back, and the accident pilot said he could not turn around. The airplane entered a cloudbank and was found three days later destroyed by impact and fire.

Flight Details

The accident involved a private pilot and a sole passenger in the first of two airplanes operating as a personal flight under Title 14, CFR part 91. The second pilot reported that both airplanes were in radio contact, and the accident airplane was about one mile ahead as they entered a mountain pass along the intended flight route.

Weather Conditions and Communications

As the flight progressed, both airplanes descended due to deteriorating weather conditions as they neared the narrowest part of the pass. The second pilot said that visibility deteriorated to a point that it was difficult to discern topographical features. He then told the accident pilot that he was uncomfortable with the lack of visibility and was turning around. The accident pilot responded by saying, in part: "Turn around if you can... I am not able to." The second pilot indicated that the last time he saw the accident airplane was as it entered a cloudbank.

During the accident pilot's final radio transmission, prompted by the second pilot's inquiry about how he was doing, he responded that he was just trying to get through the pass. No further radio communications were received from the accident airplane.

Wreckage and Investigation

There was no ELT signal, and the search for the airplane was unsuccessful until three days later. The wreckage was located at the 3,100-foot level of the mountain pass, in an area of steep terrain. Impact forces and a postcrash fire had destroyed the airplane. During the IIC's on-site examination of the wreckage, no preaccident mechanical anomalies were discovered.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20060921X01372. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.