SEA84LA096

NTSB accident investigation · Hughes 369D · Toutle, WA · April 29, 1984

Accident · No injuriesLimited investigationFinal report
Date
April 28, 1984, 16:30 local (Apr 29, 1984, 00:30 UTC)
Place
Toutle, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N779FAHughes 369D
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840428043789A
Case key
39906

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.

Loss of engine powerCruise
Fuel system - contaminationCause
Fuel system,pump - deterioratedFactor
Forced landingDescent - emergency
Autorotation - performedPilot in command
Altitude - inadequatePilot in commandFactor
Hard landingLanding - flare/touchdown

Analysis

Plt was operating helicopter at 120 ft AGL with the aux fuel pump on when a ttl loss of pwr occurred. Autorotation was entered but a hard landing resulted in the main rotor blades cutting off the tail boom. Investigation revealed a fuel sample taken from the engine fuel pump filter chamber contained several different types of contamintation particles. Some of which were from a deteriorating fuel pump bushing.

Aircraft

Registration
N779FA
Reported as
Hughes 369D
Category
Helicopter
Serial number
543
Engine
Allison 250-C2OB, 375 horsepower, turbo shaft
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Michael L Obrien, doing business as Obrien Intl Ltd
Registered owner
Michael L. O'Brien
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · December 7, 1983 · 95 hours before
Departed
Camp Baker, WA
Destination
Spirit Lake, WA

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
31
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
4,912 total · 2,510 in this make and model · 4,727 as pilot in command · 23 in the last 90 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 10 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
2,000 ft broken
Temperature
39 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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