LAX96LA311

NTSB accident investigation · Atkinson Varieze · Glendale, AZ · August 17, 1996

Accident · No injuriesLimited investigationFinal report
Date
August 17, 1996, 16:28 local (23:28 UTC)
Place
Glendale, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N3LVAtkinson Varieze
Weather
Visual (VMC) · Day
Status
Completed · report December 16, 1996
Report
Approved by Office Director
FAA report
19960817028309A
Case key
29539

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 fracture and separation of the mixture control cable housing from the carburetor mounting bracket, which resulted in fuel starvation due to an overlean condition, and the pilot's failure to maintain an adequate airspeed while stretching the glide to the field which resulted in an inadvertent stall/mush and a hard 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) - mech failure/malfCruise
Mixture control,cable - separationCause
Forced landingEmergency descent/landing
In flight collision with terrain/waterLanding - flare/touchdown
Airspeed(vref) - not maintainedPilot in commandCause
Stall/mush - inadvertentPilot in commandCause

Analysis

The pilot reported that after departure he headed toward a nearby USAF base to make a low approach to their runway. After receiving a clearance to enter the base airspace the pilot turned toward the airbase and applied full throttle. Shortly after that, the engine suddenly quit, restarted briefly, then quit altogether. The pilot said he set up for a forced landing in a vacant field and was just able to make the field but the aircraft landed hard. The landing gear broke and separated from the aircraft, then it cartwheeled. The engine and airframe were inspected by an FAA airworthiness inspector who reported that he found the mixture cable housing broken where it entered the securing bracket to the carburetor. The cable would pull the mixture lever to the idle cutoff position but would not push the lever toward the rich position. The inspector further noted that the cable, which appeared to be a bicycle or motorcycle part, was too short for the application.

Factual narrative

On August 17, 1996, at 1628 mountain standard time, a homebuilt experimental Atkinson Varieze airplane, N3LV, collided with the ground in a vacant field near the Glendale, Arizona, airport while attempting a forced landing. The forced landing was precipitated by a complete loss of engine power during cruise. The aircraft was owned and operated by the pilot. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local area personal flight. The aircraft incurred substantial damage and the certificated private pilot, the sole occupant, was not injured. The flight originated at the Deer Valley Airport, Phoenix, Arizona, on the day of the accident at 1600.

The pilot reported that after departure he headed toward a nearby USAF base to make a low approach to their runway. After receiving a clearance to enter the base airspace the pilot turned toward the airbase and applied full throttle. Shortly after that, the engine suddenly quit, restarted briefly, then quit altogether. The pilot said he set up for a forced landing in a vacant field and was just able to make the field but the aircraft landed hard. The landing gear broke and separated from the aircraft, then it cartwheeled.

The engine and airframe were inspected by an FAA airworthiness inspector from the Scottsdale, Arizona, Flight Standards District Office. The inspector reported that he found the mixture cable housing broken where it entered the securing bracket to the carburetor. The cable would pull the mixture lever to the idle cutoff position but would not push the lever toward the rich position. The inspector further reported that the cable, which appeared to be a bicycle or motorcycle part, was too short for the application.

Aircraft

Registration
N3LV
Reported as
Atkinson Varieze
Category
Airplane, amateur-built
Serial number
1
Airframe hours
627
Engine
Lycoming O-235-L2C, 108 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Steven L. Worne
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · October 25, 1995 · 67 hours before
Departed
DVT · Phoenix, AZ

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
38
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
196 total · 66 in this make and model · 122 as pilot in command · 18 in the last 90 days · 13 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 14 knots, gusting 21
Visibility
7 statute miles
Lowest ceiling
None
Temperature
106 °F, dew point 57 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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