Casualties unknown

Partial power loss leads to forced landing in wooded area (N312OU)

Carrabassett VY, ME, US

On April 7, 1991, a Cessna 182F (registration N312OU) operated by William L. Mckenney was involved in an aviation accident near Carrabassett VY, ME. Investigators recorded the probable cause as: The pilot's failure to maintain adequate altitude to recover from a partial power loss caused by carburetor ice, which was exacerbated by the application of carburetor heat. 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 2026-06-22Data APIEditorial standards

A pilot experienced a partial power loss shortly after takeoff at 3000 feet. Carburetor heat worsened the situation, forcing an off-airport landing in a wooded area due to insufficient altitude.

What happened

The pilot initiated takeoff and climbed to approximately 3000 feet before leveling off. At this altitude, he experienced a partial loss of engine power. In an attempt to resolve the issue, the pilot applied carburetor heat; however, this action resulted in a further reduction of power rather than a recovery.

The pilot determined that there was insufficient altitude remaining to allow enough time for any potential ice within the carburetor to melt and restore normal engine operation. Consequently, an off-airport forced landing was executed in a nearby wooded area.

The investigation

Following the accident, maintenance personnel conducted a test run of the airplane's engine. The inspection revealed no apparent mechanical defects or irregularities that would explain the power loss under normal operating conditions.

Probable cause

The pilot's failure to maintain adequate altitude to recover from a partial power loss caused by carburetor ice, which was exacerbated by the application of carburetor heat.

Frequently asked questions

What happened in the 7 Apr 1991 Cessna 182F accident near Carrabassett VY, ME?

A pilot experienced a partial power loss shortly after takeoff at 3000 feet. Carburetor heat worsened the situation, forcing an off-airport landing in a wooded area due to insufficient altitude.

What aircraft was involved and where did it happen?

The accident on 7 Apr 1991 involved a Cessna 182F, registration N312OU, operated by William L. Mckenney, at Carrabassett VY, ME.

What was the probable cause of the accident?

The pilot's failure to maintain adequate altitude to recover from a partial power loss caused by carburetor ice, which was exacerbated by the application of carburetor heat.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X16867. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.