SEA08LA054

NTSB accident investigation · Hein Sonex · Murrieta, CA · December 28, 2007

Accident · Serious injuriesLimited investigationFinal report
Date
December 28, 2007, 11:30 local (19:30 UTC)
Place
Murrieta, CA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N365SXHein Sonex
Weather
Visual (VMC) · Day
Status
Completed · report December 24, 2008
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20071228830099A
Case key
67318

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 loss of engine power due to fuel exhaustion. Contributing to the accident was the lack of suitable terrain for the forced landing.

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 - normal
Fluid,fuel - exhaustionCause
Forced landingEmergency descent/landing
Terrain condition - none suitableFactor
Nose overEmergency descent/landing
Terrain condition - rough/uneven

Analysis

The pilot reported that during cruise flight, the engine lost power. The pilot was able to restart the engine momentarily before it lost power a second time as he initiated a forced landing to an open field. During the landing roll, the right main landing gear encountered a hole and the airplane nosed over. Examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed structural damage to the horizontal stabilizer and rudder. No evidence of fuel was observed on the ground surrounding the airplane or leaking from the airplane. No fuel was observed within the airframe fuel sump. The pilot reported to local law enforcement shortly after the accident that he "believes he possibly ran out of fuel."

Factual narrative

On December 28, 2007, about 1130 Pacific standard time, an amateur built Hein Sonex experimental airplane, N365SX, made a forced landing following a loss of engine power while maneuvering near Murrieta, California. The airplane was registered to, and operated by, the pilot under the provisions of Title 14 Code of Federal Regulations Part 91. The private pilot, the sole occupant of the aircraft, was seriously injured. The airplane was substantially damaged. Visual meteorological conditions prevailed, and no flight plan was filed for the personal flight. The personal flight originated from the Flabob Airport (RIR), Riverside, California, at 0930.

In a written statement, the pilot reported that after a non eventful flight, he descended from 6,500 feet mean sea level (msl) to 3,500 feet msl. A few minutes later, the engine lost power. The pilot stated he was able to restart the engine momentarily but it lost power a second time. He initiated a forced landing to a nearby open field. During the landing roll, the right main landing gear struck a hole and the airplane nosed over. The pilot added that prior to departure, he refueled the airplane with 100 low lead fuel until he could "touch the gas with his finger."

Examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the airplane came to rest inverted within an open field. The horizontal stabilizer and rudder were structurally damaged. The inspector stated that there was no evidence of fuel on the ground at the accident site or leaking from the airplane. No fuel was observed in the airframe fuel sump.

According to a Murrieta Police Department deputy, shortly after the accident, the pilot stated that he "believes he possibly ran out of fuel."

Aircraft

Registration
N365SX
Reported as
Hein Sonex
Category
Airplane, amateur-built
Serial number
365
Airframe hours
11.5
Engine
Jabiru 3300, 120 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental light sport (Special)
Last inspection
Continuous airworthiness · December 20, 2007 · 0.5 hours before
Departed
RIR · Riverside, CA
Destination
RIR

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
74
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Unknown
Last flight review
June 19, 2007
Seat
Left
Flight hours
250 total · 20 in this make and model · 250 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
30° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
52 °F, dew point 12 °F
Altimeter
30.14 inHg
Observed at
RIV, 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.