Primary finding
Probable cause
failure of maintenance personnel to properly torque the six accessory drive bolts, which resulted in fatigue failure of the undertorqued bolts.
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NTSB investigation record
CHI97LA004
CompletedBell 47G-5· N7925J
- Date
- October 6, 1996
- Location
- Nunda, SD
- Conditions
- VMC
- Record
- Completed
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