Casualties unknown

2002-10-29: Cessna 207 (N91090) — Marshall, AK

Marshall, AK, US

On October 29, 2002, a Cessna 207 (registration N91090) was involved in an aviation accident near Marshall, AK. Investigators recorded the probable cause as: The pilot's failure to maintain clearance from terrain, which resulted in an in-flight collision with a ridgeline. Factors contributing to the accident were the high terrain, the pilot's inadequate preflight planning, and the dark night light conditions. 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, on a night positioning flight under overcast skies with no horizon, collided with a ridgeline at 1,200 feet msl about 4 miles south of the new departure airport. The ridge summit is 1,714 feet msl.

Flight Details

The flight involved a commercial pilot positioning an airplane from the departure airport to another airport. The flight occurred during a dark night with overcast skies and no discernible horizon. After departure, the pilot climbed to a cruise altitude between 1,200 and 1,400 feet mean sea level (msl).

Collision

Approximately 4 miles south of the departure airport, the airplane collided with an east-west oriented ridge at an elevation of 1,200 feet msl. The ridgeline is perpendicular to the direct route between the departure and destination airports. It rises from west to east and has a summit elevation of 1,714 feet msl.

Airport Information

The departure airport was a newly commissioned airport located 3 miles east-northeast of the old airport. The accident flight was the pilot's second trip to the new airport and his first night departure from either the old or new airport. A direct flight from the new airport to the destination requires a higher altitude to clear the ridgeline compared to a direct flight from the old airport. A direct flight from the old airport crosses the same ridgeline farther to the west, where the ridge elevation is less than 500 feet msl.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20021106X05441. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.