Primary finding
Probable cause
disengagement of the main transmission aft pinion nut, allowing the tail rotor splined drive sleeve to disengage from the pinion, which resulted in loss of directional control and an emergency (autorotative) landing.
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NTSB investigation record
IAD97LA028
CompletedHughes 269C· N1105P
- Date
- December 4, 1996
- Location
- Mayfield, KY
- Conditions
- VMC
- Record
- Completed
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