Accident Hughes 369D N8662F, Tuesday 6 August 1985

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Date:	Tuesday 6 August 1985
Time:	13:00 LT
Type:	Hughes 369D
Owner/operator:	Denver Helicopters, Inc.
Registration:	N8662F
MSN:	690530D
Total airframe hrs:	1794 hours
Engine model:	Allison 250 C-20B
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Cheyenne, WY - United States of America
Phase:	En route
Nature:	Executive
Departure airport:	Cheyenne, WY (KCYS)
Destination airport:	Wheatland, WY (EAN
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
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.

Probable Cause:

Accident investigation: