NONE · Cessna T210M · 2000-02-16 · ELFRIDA, AZ, USA
Event
NTSB number
LAX00GA102
Event ID
20001212X20506
Type
Accident
Date
2000-02-16
Location
ELFRIDA, AZ, USA
Coordinates
31.730333, -109.699203
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
2
Total aboard
2
Aircraft
Make
Cessna
Model
T210M
Registration
N761KC
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
NBRT
Weather
VMC
Probable cause
The company mechanic's failure to correctly install one or more of the crankshaft counterweight pin retaining plate snap rings, specifically ensuring that the snap rings were fully seated in their grooves. This led to the complete separation of the No. 2 leading counterweight and the partial separation of the No. 3 trailing weight from the crankshaft and a resulting internal catastrophic engine failure. A factor in the accident was the lack of definitive procedural guidance in any of the engine manufacturer's reference material, available at the time, on the correct installation of these components.