No fatalities

Pilot Reports Loss of Depth Perception from Blowing Snow During Landing (N56EA)

Coeur D'alene, ID, US

On January 31, 1990, a Swearingen SA226TC (registration N56EA) operated by Empire Airlines was involved in an aviation accident near Coeur D'alene, ID. No fatalities were reported. Investigators recorded the probable cause as: THE LOSS OF THE FLIGHT CREW'S VISUAL PERCEPTION, DUE TO AN UNFORESEEN WHITEOUT CONDITION. A RELATED FACTOR WAS THE SNOWBANK. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

A pilot reported that after reaching the airport in IMC with light snow, they saw approach and runway lights at decision height. During flare, blowing snow caused loss of depth perception and alignment. The aircraft touched down left of centerline, drifted left despite correction, and came to rest in a snowbank with damage.

Incident Overview

A pilot reported that upon reaching the airport, instrument meteorological conditions (IMC) prevailed, and light snow was falling. At the decision height during the approach, the pilot sighted both the approach lights and the runway lights. The runway surface was covered with snow.

Landing Sequence

During the flare to land, the pilot lost depth perception and runway alignment due to blowing snow. The airplane touched down, and the pilot perceived that the aircraft was slightly left of the centerline. A correction was applied using right rudder; however, the airplane continued to travel left.

Outcome

The aircraft subsequently went off the runway and came to rest in a snowbank, resulting in damage.

Frequently asked questions

What happened in the 31 Jan 1990 Swearingen SA226TC accident near Coeur D'alene, ID?

A pilot reported that after reaching the airport in IMC with light snow, they saw approach and runway lights at decision height. During flare, blowing snow caused loss of depth perception and alignment. The aircraft touched down left of centerline, drifted left despite correction, and came to rest in a snowbank with…

Were there any fatalities in the 31 Jan 1990 Swearingen SA226TC accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 31 Jan 1990 involved a Swearingen SA226TC, registration N56EA, operated by Empire Airlines, at Coeur D'alene, ID.

What was the probable cause of the accident?

THE LOSS OF THE FLIGHT CREW'S VISUAL PERCEPTION, DUE TO AN UNFORESEEN WHITEOUT CONDITION. A RELATED FACTOR WAS THE SNOWBANK.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X22500. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.