THOMPSON FALLS, MT, USA
N3777P
PIPER PA-18
THE ACFT NOSED OVER DURING A FORCED LNDG ON TERRAIN COVERED BY 20 INCHES OF SNOW. THE FLT WAS ON DEER SURVEY FLT THE PLT TOLD OF IMPROPER USE OF THE CARB HEAT CONTROL DURING A PERIOD OF'PERFECT' ICING CONDITIONS. THE PLTS REDUCTION OF POWER DURING MANEUVERING ALSO CONTRIBUTED TO THE BUILD UP OF ICE IN THE CARBURETOR. THE PLT WROTE IN HIS STATEMENT UNDER PREVENTATIVE RECOMMENDATIONS THAT HE SHOULD HAVE BEEN MORE AWARE OF GETTING BEHIND THE 'HEAT CURVE' OF THE ENG.
Source: NTSB Aviation Accident Database
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