NTSB Identification: CHI84LA270.
The docket is stored on NTSB microfiche number 24837.
Accident occurred Friday, June 29, 1984 in ARENA, WI
Aircraft: HUGHES 500C/369HS, registration: N377ST
Injuries: 1 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
DURING AN AGRICULTURAL SPRAYING OPERATION THE HELICOPTER ENG LOST PWR. THE PLT ATTEMPTED AN AUTOROTATION. THE ACFT ROLLED OVER ON LANDING. THE PLT STATED THAT HE OBSERVED A LOSS OF ENG & ROTOR RPM, NECESSATATING THE AUTOROTATION. INSPECTION OF THE ENG REVEALED THAT THE THIRD STAGE STATOR VANES WERE BROKEN.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:COMPRESSOR ASSEMBLY,STATOR VANE RETAINER..FAILURE,PARTIAL
The National Transportation Safety Board determines the probable cause(s) of this accident to be:AUTOROTATION..INADEQUATE..PILOT IN COMMAND
IN-FLIGHT PLANNING/DECISION..INADEQUATE..PILOT IN COMMAND
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