NTSB Identification: CEN13LA091
14 CFR Part 91: General Aviation
Accident occurred Wednesday, December 05, 2012 in Halfway, MO
Probable Cause Approval Date: 01/30/2014
Aircraft: STINSON 108-2, registration: N8775K
Injuries: 1 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The private pilot said the airplane was in cruise flight when the engine made an unusual grinding noise and then stopped producing power. The pilot made a forced landing to a field. During the emergency descent, the airplane struck a power line with the left main landing gear and landed hard. Examination of the engine revealed that the magnetos were not properly secured to the engine and that the camshaft was broken. A review of the engine maintenance logbook revealed the airplane's most recent annual inspection was completed in January 2008, almost 5 years before the accident.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's failure to properly maintain the airplane and engine, which resulted in a total loss of engine power due to improperly installed magnetos and a broken camshaft.

Full narrative available

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