Primary finding
Probable cause
The contamination of the carburetor, inadequate maintenance inspection by maintenance personnel, and the inadequate maintenance servicing by the pilot/owner.
Investigator assessment
Analysis narrative
The pilot was on down wind for his private airstrip when the engine began to run rough. It subsequently quit, and trees and terrain were struck during the ensuing forced landing. An examination of the engine and fuel system disclosed no substantive mechanical anomalies with the engine. The carburetor fuel filter screen cap was installed using a gasket adhesive instead of the proper gasket, and a large quantity of foreign particulate matter was found in the carburetor.
Source record
Factual narrative
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