No fatalities

Engine Power Loss After Takeoff Leads to Off-Airport Landing and Nose Over (N492SF)

Snohomish, WA, US

On January 31, 2006, a Cessna 172N (registration N492SF) was involved in an aviation accident near Snohomish, WA. No fatalities were reported. Investigators recorded the probable cause as: Carburetor heat was not used during the initial climb in probable serious carburetor icing conditions during cruise power. Carburetor icing conditions and wet terrain were factors. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 1 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

Shortly after takeoff, the engine lost power at 250-300 ft. The flight instructor landed in a flooded field. During landing roll, the aircraft nosed over, damaging wings, lift strut, and vertical stabilizer. Post-recovery engine test showed no anomalies. Weather conditions were conducive to carburetor icing.

Event Summary

A pilot reported that shortly after takeoff, the engine lost power after the aircraft reached an altitude of approximately 250 to 300 feet above ground level. The flight instructor then assumed control of the aircraft and executed an off-airport landing in an open field that had been flooded by recent rains.

Landing and Damage

During the landing roll, the airplane nosed over. The wings and a lift strut sustained damage. Fuel was observed leaking from the fuel tank(s), and the top of the vertical stabilizer was crushed.

Engine Test

After the wreckage was recovered, the engine was prepared for an operational run. The engine started and ran smoothly for about five minutes with no anomalies noted.

Weather Conditions

The nearest weather reporting facility, located 6 nautical miles to the west, reported a temperature of 42 degrees Fahrenheit and a dew point of 36 degrees Fahrenheit. The carburetor icing probability chart indicated that, for the reported temperature and dew point, the aircraft was operating in probable serious carburetor icing conditions at cruise or climb power.

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Frequently asked questions

What happened in the 31 Jan 2006 Cessna 172N accident near Snohomish, WA?

Shortly after takeoff, the engine lost power at 250-300 ft. The flight instructor landed in a flooded field. During landing roll, the aircraft nosed over, damaging wings, lift strut, and vertical stabilizer. Post-recovery engine test showed no anomalies. Weather conditions were conducive to carburetor icing.

Were there any fatalities in the 31 Jan 2006 Cessna 172N accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 31 Jan 2006 involved a Cessna 172N, registration N492SF, at Snohomish, WA.

What was the probable cause of the accident?

Carburetor heat was not used during the initial climb in probable serious carburetor icing conditions during cruise power. Carburetor icing conditions and wet terrain were factors.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20060227X00242. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.