Aircraft collision with ridge during night flight

Casualties unknown • Marshall, AK, US

A commercial pilot flying between two airports collided with a ridgeline during a night flight under overcast conditions.

What happened

On the night of the accident, a commercial pilot was repositioning an aircraft from a departure airport to another destination. The flight occurred under dark night conditions with overcast skies and no discernible horizon. After departing, the pilot climbed to a cruise altitude maintained between 1,200 and 1,400 feet MSL.

Approximately 4 miles south of the departure airport, the aircraft struck an east-west ridgeline at an elevation of 1,200 feet MSL. The ridge in question rises from west to east, reaching a summit elevation of 1,714 feet MSL, and sits perpendicular to the direct flight path between the two airports.

The departure airport used for this flight was a newly commissioned facility located 3 miles east-northeast of the previous airport. This was only the pilot's second trip using the new airport and his first night departure from either the old or new location. Notably, a direct flight from the new airport requires a higher altitude to clear the ridgeline than a flight originating from the old airport, where the ridge elevation is less than 500 feet MSL.

Probable cause

The pilot's flight path required a higher altitude to clear the terrain when departing from the new airport compared to the old airport, resulting in a collision with the ridgeline during night flight in overcast conditions.

Frequently asked questions

What happened in the 2002-10-29 Cessna 207 accident near Marshall, AK?

A commercial pilot flying between two airports collided with a ridgeline during a night flight under overcast conditions.

What aircraft was involved and where did it happen?

The accident on 2002-10-29 involved a Cessna 207, registration N91090, at Marshall, AK.

What was the probable cause of the accident?

The pilot's flight path required a higher altitude to clear the terrain when departing from the new airport compared to the old airport, resulting in a collision with the ridgeline during night flight in overcast conditions.

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.

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