1 fatality

1997-03-25: Short SC.7 Skyvan Variant (N451SA) — Arctic Circle Air Service — Nunapitchuk, United States of America

Nunapitchuk, United States of AmericaTakeoff (climb)

On March 25, 1997, a Short SC.7 Skyvan Variant (registration N451SA) operated by Arctic Circle Air Service was involved in an aviation accident near Nunapitchuk, United States of America during takeoff. One person was killed. Investigators recorded the probable cause as: inadequate visual look-out by the pilots of both airplanes, which resulted in their failure to see-and-avoid each other's airplanes. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 5 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781206202Data APIEditorial standards

A Cessna 207A and a Short SC7 collided in mid-air near a remote airstrip after the SC7 pilot announced departure. Both aircraft were found entangled on a frozen lake.

Incident Overview

On an unspecified date, a Cessna 207A (registration N800GA) and a Short SC7 (registration N451SA) collided in mid-air approximately 1.49 nautical miles east-northeast of a remote airstrip. The airstrip, located about 18.3 miles west of their common destination, had no control tower. Communications at uncontrolled airports are conducted on a common traffic advisory frequency (CTAF).

Sequence of Events

The pilot of the Cessna 207A was returning to his company base, passing about 2 miles north of the airstrip along the route of flight. Meanwhile, the pilot of the Short SC7 announced his departure from the same airstrip on the CTAF and took off in a northerly direction. He then began a climbing right turn toward the same destination as the Cessna. The two airplanes collided in mid-air, and witnesses observed them spiraling downward from about 800 feet above the ground.

Aftermath

Both airplanes were found lying flat and upright on a frozen lake, entangled together at the accident site. The Cessna's burned wreckage was lying on top of and positioned toward the aft third of the burned wreckage of the Short SC7.

Probable Cause

The official investigation determined the probable cause to be inadequate visual look-out by the pilots of both airplanes, which resulted in their failure to see-and-avoid each other's airplanes.