NTSB investigation record

ANC93LA095

Completed

Bell B-3· N21424

Date: June 18, 1993
Location: Annette Bay, AK
Conditions: VMC
Record: Completed

Primary finding

Probable cause

The failure of the tail rotor drive shaft coupling and the inadequate inspection of the tail rotor drive system by company maintenance personnel after the first tail rotor strike.

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