Primary finding
Probable cause
The failure of an intake valve spring. Factors related to the accident were the low altitude at which the autorotation was initiated and the soft terrain on which the helicopter was landed.
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NTSB investigation record
CHI92DEM01
CompletedRose wesley Rotorway wr exec· N6617L
- Date
- April 18, 1992
- Location
- Hudsonville, MI
- Conditions
- VMC
- Record
- Completed
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