Casualties unknown

2001-03-29: Piper PA-12 (N4028H) — Cooper Landing, AK

Cooper Landing, AK, US

On March 29, 2001, a Piper PA-12 (registration N4028H) was involved in an aviation accident near Cooper Landing, AK. Investigators recorded the probable cause as: The pilot's continued VFR flight into instrument metrological conditions during cruise flight. Factors associated in the accident were low ceilings, whiteout conditions, and snow-covered terrain. 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

A commercial pilot flying the lead airplane in a two-ship formation over mountainous, snow-covered terrain collided with a frozen lake after losing visual reference during a left turn in deteriorating weather.

Incident Overview

A certificated commercial pilot was operating the lead aircraft in a flight of two airplanes over snow-covered terrain. According to the pilot, as the flight progressed, weather conditions worsened as they entered an area of mountainous terrain. The pilot reported that both airplanes continued along the intended route with an overcast ceiling of about 300 feet and visibility of approximately 3 miles.

Flight Details

The accident pilot stated that while flying over a large, featureless snow-covered lake, he maintained visual reference to the ground by using terrain features along the lake shoreline on the right side of the airplane. As weather conditions deteriorated further, he radioed the second airplane that he intended to turn around. He then initiated a left turn.

Loss of Visual Reference

During the turn, the pilot reported that he lost all visual reference to the frozen, snow-covered lake. He stated that he was able to level the wings just before colliding with the surface of the snow-covered lake.

Aftermath

The pilot's account does not specify injuries, damage, or aircraft details. No other information from the investigation was provided in the source.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20010416X00755. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.