2 fatalities

2006-09-15: De Havilland DHC-2 Beaver (N836KA) — Alex T. Stack — Skwentna, United States of America

Skwentna, United States of AmericaFlight

On September 15, 2006, a De Havilland DHC-2 Beaver (registration N836KA) operated by Alex T. Stack was involved in an aviation accident near Skwentna, United States of America in flight. 2 people were killed. 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 Bureau of Aircraft Accidents Archives (B3A); 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781198624Data APIEditorial standards

A private pilot flying VFR into a mountain pass in deteriorating weather continued into a cloudbank and collided with terrain, as a second pilot turned back due to low visibility.

Accident Overview

A private pilot and sole passenger were aboard the lead airplane of a two-aircraft flight operating under Title 14, CFR part 91 as a personal flight. The second pilot, flying the trailing airplane, reported that both aircraft were in radio contact, with the accident airplane approximately one mile ahead as they entered a mountain pass along their intended route. As the flight progressed, both airplanes descended due to worsening weather conditions as they approached the narrowest part of the pass.

Flight and Weather Conditions

The second pilot stated that visibility deteriorated to the point where topographical features became difficult to discern. He informed the accident pilot that he was uncomfortable with the lack of visibility and intended to turn around. According to the second pilot, the accident pilot responded, in part: "Turn around if you can... I am not able to." The second pilot noted 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 his status, he replied that he was just trying to get through the pass. No further radio communications were received from the accident airplane.

Wreckage and Investigation

No ELT signal was detected, 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 post-crash fire destroyed the airplane. During the investigator-in-charge's on-site examination, no pre-accident mechanical anomalies were discovered.

Probable cause

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.