DFW08LA095

NTSB accident investigation · Hawker Beechcraft G36 · El Dorado, KS · April 9, 2008

Accident · No injuriesLimited investigationFinal report
Date
April 9, 2008, 13:25 local (18:25 UTC)
Place
El Dorado, KS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N984WHawker Beechcraft G36
Defining event
Enroute-climb to cruise: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report January 29, 2009
Report
Approved by Office Director
Parties
Teledyne Continental Motors, Hawker Beechcraft Corporation, Federal Aviation Administration
FAA report
20080409014459A
Case key
67796

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 improper installation of the fuel manifold valve's brass plug. Contributing to the accident was the unsuitable landing area for the forced landing.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Fuel system: fuel distributionAircraft › Aircraft systems · Incorrect service/maintenanceAll aircraft: 141 casesProbable cause
Object/animal/substance: fence/fence postEnvironmental issues › Physical environment · Effect on equipmentAll aircraft: 313 casesProbable cause
Maintenance: installationPersonnel issues › Task performance · OtherAll aircraft: 371 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

While climbing through 5,000 feet on the airplane's first post production test flight, a total loss of engine power was experienced. Following an unsuccessful engine restart attempt, the pilot elected to perform a forced landing on a nearby road. During the landing roll out the airplane's right wing sustained structural damage when it contacted a fence post. The airplane came to rest in an upright position and the pilot was able to exit the airplane unassisted. An examination of the engine revealed that a brass plug had fallen out of the fuel manifold valve, which resulted in the loss of engine power. The threads on the brass plug and in the fuel manifold valve were found unremarkable, suggesting that the brass plug was not sufficiently torqued at the time it was last installed. A determination as to the plug's last installation could not be established.

Factual narrative

On April 9, 2008, about 1325 central daylight time, a single-engine Hawker Beechcraft G36 airplane, N984W, was substantially damaged during a forced landing following a loss of engine power near El Dorado, Kansas. The airline transport pilot, the sole occupant of the airplane, was not injured. The airplane was registered to and operated by Hawker Beechcraft Corporation, of Wichita, Kansas. Visual meteorological condition prevailed and no flight plan was filed for the 14 Code of Federal Regulations part 91 production test flight. The local flight departed the Beech Factory Airport (BEC), Wichita, Kansas at approximately 1310 for its maiden flight.

The pilot reported that while climbing through 5,000 feet, the airplane experienced a total loss of engine power. Following an unsuccessful engine restart attempt, the pilot elected to perform a forced landing on a nearby road. During the landing roll out the airplane's right wing sustained structural damage when it contacted a fence post. The airplane came to rest in an upright position and the pilot was able to exit the airplane unassisted.

On April 11, 2008, representatives from Hawker Beechcraft Corporation and Teledyne Continental Motors examined the engine with oversight provided by the Federal Aviation Administration. The examination revealed that brass plug part number 629518-1 had fallen out of the fuel manifold valve which resulted in the loss of engine power.

The threads on the brass plug and in the fuel manifold valve were found unremarkable, suggesting that the brass plug was not sufficiently torqued at the time it was last installed. A determination as to the brass plug's last installation could not be established.

Aircraft

Registration
N984W
Reported as
Hawker Beechcraft G36
Category
Airplane
Serial number
E-3849
Engine
Teledyne Continental IO-550, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Flight test · Part 91
Operator
Hawker Beechcraft Corp
Registered owner
Hawker Beechcraft Corp
Airworthiness certificate
Special, Special flight (Special)
Departed
BEC · Wichita, KS

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
35
Injuries
None
Certificates
Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
April 2, 2008
Seat
Left
Flight hours
7,100 total · 63 in this make and model · 6,600 as pilot in command · 152 in the last 90 days · 50 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 36 °F
Altimeter
30.00 inHg
Observed at
AAO, 24 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.