Primary finding
Probable cause
The improper installation of the main rotor bearing block by the owner/pilot which resulted in the separation of the main rotor system.
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NTSB investigation record
ATL91LA066
CompletedBenson B8M· N6572K
- Date
- March 16, 1991
- Location
- Hartselle, AL
- Conditions
- VMC
- Record
- Completed
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