LAX82FUQ09

NTSB accident investigation · Sons Mustang II · Lancaster, CA · January 22, 1982

Accident · FatalFinal report
Date
January 22, 1982, 14:59 local (22:59 UTC)
Place
Lancaster, CA
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Unknown
Aircraft
N13JLSons Mustang II
Weather
Visual (VMC) · Day
Status
Completed · report January 22, 1983
Report
Approved by Office Director
FAA report
19820122001609A
Case key
71349

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

On this page

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) - mech failure/malfUnknown
Fuel system,selector/valve - undeterminedCause
Fluid,fuel - starvationCause
Forced landingDescent - emergency
Loss of control - in flightApproach
Airspeed - not maintainedPilot in commandCause
Stall - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The purpose of the flight was to demonstrate the aircraft to a prospective buyer. About 20 to 30 minutes after takeoff, witnesses observed the aircraft in a circling descent. At 500 to 700 ft AGL, the descent angle suddenly increased to nearly vertical and the plane crashed. One witness noted a conspicuous absence of engine noise. An investigation revealed that the shaft on the fuel selector valve was broken between the selector handle and the internal mechanism of the value. There was evidence that the shaft had been partially broken for some time prior to the accident. Traces of fuel were evident at the left and right inlet ports to the valve. However, no fuel was evident in the fuel system, forward from the fuel selector. A teardown disclosed that the fuel selector valve was in the off position.

Aircraft

Registration
N13JL
Reported as
Sons Mustang II
Category
Airplane, amateur-built
Serial number
RG-56-1067
Engine
Continental IO-360D, 210 horsepower, reciprocating
Damage
Destroyed
Flight
Part 91
Operator
K. Segrest
Registered owner
K. Segrest
Departed
William Fox, CA
Destination
William Fox, CA

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
32
Certificate
Private
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land, Multi-engine sea
Medical
Class 1, Valid Medical--no waivers/lim.
Flight hours
488 total · 30 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 11 knots
Visibility
40 statute miles
Temperature
111 °F
Altimeter
30.00 inHg
Observed at
LAN

FAA reports on this event · 1

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