LAX95LA024

NTSB accident investigation · Kaman HH-43F · Willits, CA · October 30, 1994

Accident · Serious injuriesLimited investigationFinal report
Date
October 30, 1994, 12:45 local (20:45 UTC)
Place
Willits, CA
Injuries
1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N90944Kaman HH-43F
Weather
Visual (VMC) · Day
Status
Completed · report May 16, 1995
Report
Approved by Office Director
FAA report
19941030036799A
Case key
28974

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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Probable cause

the pilot's improper fuel consumption calculations resulting in fuel exhaustion. The hilly terrain was a factor in this accident.

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 power(total) - nonmechanicalCruise
Fluid,fuel - exhaustionCause
Fuel consumption calculations - improperPilot in commandCause
Forced landingDescent - emergency
Autorotation - performedPilot in command
Roll overLanding - flare/touchdown
Terrain condition - mountainous/hillyFactor

Analysis

The pilot had completed a series of logging operations and was returning to the landing site when the engine flamed out. The pilot executed a successful autorotation onto the side of a hill. After landing, however, the helicopter rolled down the hill and collided with a tree. The wreckage examination disclosed no evidence of any fuel in the engine fuel system or any preexisting malfunctions or failures.

Factual narrative

On October 30, 1994, at 1245 hours Pacific standard time, a Kaman HH-43F helicopter, N90944, crashed about 5 miles east of Willits, California. The pilot was returning to the landing area after completing a Title 14 CFR Part 133 logging operation. The helicopter, operated by Skyhook, Inc., Bend, Oregon, was destroyed. The certificated commercial pilot, the sole occupant, sustained serious injuries. Visual meteorological conditions prevailed. The flight originated at a private airstrip (Williams Ranch) near Willits, California, at 1040 hours.

National Transportation Safety Board investigators conducted a telephone interview with the operator on October 30, 1994. The operator said the pilot was returning to the airstrip for fuel when the engine "flamed out." The pilot executed a successful autorotation to the side of a hill. However, after the touchdown, the helicopter rolled over and rolled down the hill and collided with a tree.

An inspector (airworthiness) from the Federal Aviation Administration (FAA), Oakland [California] Flight Standards District Office conducted the on-scene investigation. The inspector reported that the engine system did not contain any fuel.

He also said that there was no evidence of any preexisting malfunctions or failures.

Neither the operator nor the pilot submitted the required Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2. The pilot's flight times noted in this report were obtained from the helicopter's insurers.

Aircraft

Registration
N90944
Reported as
Kaman HH-43F
Category
Helicopter
Serial number
62-4514
Airframe hours
3,740
Engine
Lycoming T53-L-9, 1,150 horsepower, turbo shaft
Damage
Destroyed
Flight
Other work use · Part 133
Operator
Skyhook, Inc.
Registered owner
Moseley Aviation, Inc.
Airworthiness certificate
Special, Restricted (Special)

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
46
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
18,400 total · 300 in this make and model

Weather

Conditions
Visual (VMC) · Day
Visibility
30 statute miles
Lowest ceiling
None
Temperature
75 °F

FAA reports on this event · 1

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