NTSB Identification: DEN85LA210.
The docket is stored on NTSB microfiche number 30426.
Accident occurred Tuesday, August 06, 1985 in CHEYENNE, WY
Aircraft: HUGHES 369D, registration: N8662F
Injuries: 2 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.

THE FLT WAS A PIPELINE PATROL OPERATION. WHILE IN FLT, SMOKE WAS OBSERVED IN THE CABIN. THE PLT MADE AN UNSUCCESSFUL AUTOROTATION RESULTING IN SUBSTANTIAL DAMAGE TO THE HELICOPTER. INVESTIGATION REVEALED THE SMOKE WAS FROM AN INFLIGHT ENG COMPARTMENT FIRE. THERE WERE NO REPORTED INJURIES TO THE PLT AND HIS PAX.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

MAINTENANCE,INSTALLATION..IMPROPER..COMPANY MAINTENANCE PERSONNEL


Contributing Factors

LUBRICATING SYSTEM,OIL GASKET..IMPROPER


Contributing Factors

MAINTENANCE,100-HOUR INSPECTION..POOR..COMPANY MAINTENANCE PERSONNEL


Contributing Factors

PREFLIGHT PLANNING/PREPARATION..INADEQUATE..PILOT IN COMMAND

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