LAX93LA069

NTSB accident investigation · Lydick LONG-EZ · Tucson, AZ · December 18, 1992

Accident · FatalLimited investigationFinal report
Date
December 17, 1992, 17:35 local (Dec 18, 1992, 00:35 UTC)
Place
Tucson, AZ
Injuries
1 fatal, 1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N777CJLydick LONG-EZ
Weather
Visual (VMC) · Day
Status
Completed · report September 14, 1993
Report
Approved by Office Director
FAA report
19921217050819A
Case key
27886

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 failure to maintain an airspeed or power setting sufficient to maintain engine rotation during the low speed demonstration. A factor in the accident was the insufficient altitude to affect an engine restart once the propeller stopped turning.

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) - nonmechanicalManeuvering
Procedures/directives - not followedPilot in commandCause
Airspeed - inadequatePilot in commandCause
Throttle/power control - improper use ofPilot in commandCause
Forced landingDescent - emergency
In flight collision with terrain/waterDescent - emergency

Analysis

The experimental homebuilt aircraft was being demonstrated by the pilot to a potential buyer, who was a passenger in the rear tandem seat. The engine did not have an electric starter installed on the engine. According to the passenger, the pilot was demonstrating the low speed handling characteristics of the aircraft at an altitude he estimated at about 3,000 feet AGL. The pilot brought the throttle to idle, and, as the aircraft slowed, the engine ceased to run and the propeller stopped turning. The pilot was unable to affect an airstart of the engine and the aircraft collided with the ground while the pilot was attempting a forced landing on a road. Detailed examination of the engine revealed no evidence of a preimpact mechanical malfunction or failure. The emergency procedures section of the aircraft owners manual states that an airspeed of 70 knots or more is required to maintain engine rotation at idle. The manual further states that the engine stops turning, a dive speed of 130 knots or more is required to regain engine rotation with an altitude loss of greater than 2,000 feet.

Aircraft

Registration
N777CJ
Reported as
Lydick LONG-EZ
Category
Airplane, amateur-built
Serial number
1114
Airframe hours
588
Engine
Lycoming O-235-L2C, 118 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Robert E. Anderson
Registered owner
Robert E. Anderson
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · August 21, 1992 · 28 hours before
Destination
RYN

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
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Toxicology
Performed
Flight hours
400 total · 50 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 6 knots
Visibility
50 statute miles
Lowest ceiling
14,000 ft broken
Temperature
57 °F, dew point 23 °F
Altimeter
29.00 inHg
Observed at
RYN, 6 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.