DEN85LA210

NTSB accident investigation · Hughes 369D · Cheyenne, WY · August 6, 1985

Accident · No injuriesLimited investigationFinal report
Date
August 6, 1985, 13:00 local (19:00 UTC)
Place
Cheyenne, WY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N8662FHughes 369D
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850806036909A
Case key
16741

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

FireCruise - normal
Lubricating system,oil gasket - improperFactor
Maintenance,installation - improperCompany maintenance personnelCause
Maintenance,100-hour inspection - poorCompany maintenance personnelFactor
Preflight planning/preparation - inadequatePilot in commandFactor
In flight collision with terrain/waterDescent - emergency

Analysis

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.

Aircraft

Registration
N8662F
Reported as
Hughes 369D
Category
Helicopter
Serial number
690530D
Airframe hours
1,794
Engine
Allison 250 C-20B, 420 horsepower, turbo shaft
Damage
Substantial damage
Fire
In-Flight
Flight
Business · Part 91
Registered owner
Denver Helicopters, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 5, 1985 · 4 hours before
Departed
CYS · Cheyenne, WY
Destination
EAN · Wheatland, WY
Flight plan
Company VFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
59
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Helicopter
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
8,000 total · 2,000 in this make and model · 5,800 as pilot in command · 76 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 11 knots
Visibility
60 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 48 °F
Altimeter
30.00 inHg
Observed at
CYS, 19 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.