Helicopter rolls during landing in whiteout conditions

Casualties unknown • Girdwood, AK, US

A commercial pilot lost visual reference due to blowing snow while attempting to land a helicopter at a remote ski area, resulting in a roll and substantial aircraft damage.

What happened

A commercial pilot was operating a helicopter to transport skiers to a remote mountain location. The area had received approximately 6 inches of light, powdery snow the previous day. Prior to the accident, the pilot had successfully transported a group of photographers to the mountain summit and was returning to the base of the mountain to collect the next group of skiers.

As the helicopter approached the landing area in a hover, the pilot encountered whiteout conditions caused by blowing snow. This resulted in a loss of all visual references. During this period of disorientation, the aircraft drifted to the right, causing the right skid to strike the snow. The impact caused the helicopter to roll onto its right side. The aircraft sustained substantial damage to its fuselage, tail boom, and drive train components. There were no injuries reported.

Probable cause

The pilot became disoriented due to whiteout conditions and loss of visual reference caused by blowing snow while hovering toward the landing area.

Frequently asked questions

What happened in the 1999-03-17 Eurocopter AS-350-B2 accident near Girdwood, AK?

A commercial pilot lost visual reference due to blowing snow while attempting to land a helicopter at a remote ski area, resulting in a roll and substantial aircraft damage.

What aircraft was involved and where did it happen?

The accident on 1999-03-17 involved a Eurocopter AS-350-B2, registration N197EH, at Girdwood, AK.

What was the probable cause of the accident?

The pilot became disoriented due to whiteout conditions and loss of visual reference caused by blowing snow while hovering toward the landing area.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001205X00252. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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