Casualties unknown

Airplane Crashes into Mountain Near McGrath, Alaska (N5663B)

Takotna, AK, US

On July 24, 1991, a Cessna 182 (registration N5663B) operated by John O'carroll was involved in an aviation accident near Takotna, AK. Investigators recorded the probable cause as: THE PILOT'S LOSS OF CONTROL IN FLIGHT DUE TO SPATIAL DISORIENTATION WHILE ATTEMPTING TO OPERATE UNDER VISUAL FLIGHT RULES WHILE IN INSTRUMENT METEOROLOGICAL CONDITIONS. CONTRIBUTING TO THE ACCIDENT WAS THE MOUNTAINOUS TERRAIN. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 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

An airplane crashed at the 1,500-foot level of a mountain approximately 12 miles northwest of McGrath, Alaska. Other pilots reported overcast skies at 1,000 feet with 1.5 miles visibility in fog and smoke, and obscured mountain tops.

Accident Details

An airplane crashed at the 1,500-foot level of a mountain located approximately 12 miles northwest of McGrath, Alaska. The ridge that the airplane crossed was the last ridge between Ophir, the departure point, and McGrath, the destination.

Weather Conditions

Other pilots in the area reported that the weather consisted of a 1,000-foot overcast ceiling, with 1.5 miles visibility in fog and smoke. They also stated that the mountain tops were obscured.

Location

McGrath is a community in western Alaska. Ophir, the departure point, is a historical mining area. The accident site was on a mountain ridge at an elevation of approximately 1,500 feet.

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Frequently asked questions

What happened in the 24 Jul 1991 Cessna 182 accident near Takotna, AK?

An airplane crashed at the 1,500-foot level of a mountain approximately 12 miles northwest of McGrath, Alaska. Other pilots reported overcast skies at 1,000 feet with 1.5 miles visibility in fog and smoke, and obscured mountain tops.

What aircraft was involved and where did it happen?

The accident on 24 Jul 1991 involved a Cessna 182, registration N5663B, operated by John O'carroll, at Takotna, AK.

What was the probable cause of the accident?

THE PILOT'S LOSS OF CONTROL IN FLIGHT DUE TO SPATIAL DISORIENTATION WHILE ATTEMPTING TO OPERATE UNDER VISUAL FLIGHT RULES WHILE IN INSTRUMENT METEOROLOGICAL CONDITIONS. CONTRIBUTING TO THE ACCIDENT WAS THE MOUNTAINOUS TERRAIN.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X17402. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.