Primary finding
Probable cause
The fire in the engine accessory drive assembly. Factor was the rough an uneven forced landing area.
Investigator assessment
Analysis narrative
The airplane was in cruise flight when the pilot noticed a slight fire smell. The engine began to lose power slowly and would not respond to engine control inputs. The pilot landed on a gravel bar and had to extinguish the fire in the engine accessory case with the fire extinguisher and dirt. The airplane has not been recovered and the engine has not been examined.
Source record
Factual narrative
-