GILMER, TX, USA
N68776
CESSNA 152
THE COMMERCIAL PILOT AND HIS PASSENGER WERE MANEUVERING AT 700 FEET MSL WHILE ON A PIPELINE PATROL AERIAL OBSERVATION FLIGHT, WHEN THE ENGINE STARTED RUNNING ROUGH. THE PILOT APPLIED FULL CARBURETOR HEAT AS HE STARTED TO TURN TO AN OPEN FIELD. THE ENGINE STOPPED RUNNING AND THE PILOT ESTABLISHED AN EMERGENCY DESCENT TO AN OPEN PASTURE. THE AIRPLANE WAS NOT ABLE TO CLEAR THE 20 TO 30 FEET TREES ADJACENT TO THE OPEN PASTURE AND THE UNSUCCESSFUL FORCED LANDING TERMINATED WITH THE AIRPLANE SUSTAINING SUBSTANTIAL DAMAGE AFTER IMPACTING THE TREES. THE PILOT TOLD THE FAA INSPECTOR THAT HE NORMALLY FLEW WITH THE CARBURETOR HEAT PARTIALLY OPEN. THE PILOT'S IMPROPER USE OF CARBURETOR HEAT INDUCED THE FORMATION OF CARBURETOR ICE WHICH CAUSED THE LOSS OF ENGINE POWER.
A POWER LOSS DUE TO THE PILOT'S IMPROPER USE OF CARBURETOR HEAT.
Source: NTSB Aviation Accident Database
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