Primary finding
Probable cause
The failure of the pilot operator to replace the main rotor thrust bearing. The expired service life of the main rotor thrust bearing is a factor in the accident.
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NTSB investigation record
CHI89FA114
CompletedMcculloch J-2· N4354G
- Date
- June 17, 1989
- Location
- Oxford, OH
- Conditions
- VMC
- Record
- Completed
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