Casualties unknown

1985-03-13: Cessna 170B (N2859C) — Circle, AK

Circle, AK, US

On March 13, 1985, a Cessna 170B (registration N2859C) was involved in an aviation accident near Circle, AK. Investigators recorded the probable cause as: The pilot's failure to maintain visual reference during nighttime departure from an unlit, snow-covered runway, which resulted in the aircraft settling into obstructions and sustaining substantial damage. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

An aircraft departed a snow-covered runway at night without lighting, lost visual references shortly after lift-off, and settled into vegetation and deep snow resulting in substantial damage.

What happened

The pilot initiated takeoff operations during nighttime hours from a runway covered in snow. The facility lacked runway lighting, creating a low-visibility environment for departure. Shortly after the aircraft lifted off the ground, the pilot reported losing all visual references due to the darkness surrounding the airfield.

Without external visual cues, the aircraft descended and settled into an area containing alders, willow brush, and deep snow. The impact with this terrain resulted in substantial damage to the airframe before the aircraft finally came to rest.

The investigation

Investigation of the scene confirmed that there were no lights or visual references available beyond the end of the runway. The absence of lighting infrastructure on the departure surface contributed significantly to the loss of situational awareness during the critical climb phase.

Findings

The primary factors leading to this accident included the decision to take off at night from a facility with inadequate lighting and snow-covered surfaces. The pilot's inability to maintain visual reference after lift-off led to an uncontrolled descent into obstructed terrain.

Probable cause

The pilot's failure to maintain visual reference during nighttime departure from an unlit, snow-covered runway, which resulted in the aircraft settling into obstructions and sustaining substantial damage.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X35811. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.