Pilot Debrief

STINSON 108-2 near Halfway, MO — 2012-12-05

Final reportCEN13LA091
Sign in to save
Date
2012-12-05
Location
Halfway, MO, USA
Aircraft
STINSON 108-2
Registration
N8775K
Category
Airplane
Highest injury
Minor
Fatalities
0
Phase of flight
Climb

Probable cause

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.

NTSB narrative

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.

Analysis

Primary failure mode
Engine power loss
First missed decision gate
Ensure engine components were properly secured before flight.

NTSB coding

Evidence available

  • 2 docket documents
View NTSB final reportView NTSB docket

Docket documents2

Related mishaps