CHI06CA050

NTSB accident investigation · Elliott Quad City Ultralight Challenger II · California, MO · December 21, 2005

Accident · Minor injuriesData collectionFinal report
Date
December 21, 2005, 16:38 local (21:38 UTC)
Place
California, MO
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N115BTElliott Quad City Ultralight Challenger II
Weather
Visual (VMC) · Day
Status
Completed · report March 28, 2006
Report
Approved by Office Director
Parties
Kansas City, MO, FSDO
FAA report
20051221029899A
Case key
63000

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 aircraft control due to his failure to comply with procedures/directives, and the inadvertent stall/spin he encountered on his turn to base.

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 control - in flightApproach
Procedures/directives - not complied withPilot in commandCause
Lack of certificationPilot in command
Aircraft control - not maintainedPilot in commandCause
Airspeed - inadequatePilot in commandCause
Stall/spin - inadvertentPilot in command
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The experimental amateur-built airplane, operated by an unlicensed pilot, sustained substantial damage on impact with terrain following a flat spin encountered on base turn. The pilot, in part, stated, "I lost control, went into a stall-spin, and landed nearly flat in the ditch... . The accident was caused by pilot error. I forgot that the owner's manual said that "Solo flight is restricted to the front seat." ... I forgot that one either has to solo from the front seat or add weight to the front seat to solo from the rear seat. ... As I turned base to the west I was still trying to trim the plane and lost attention to airspeed." The pilot's safety recommendation was, "More training in type would have been useful. A placard could be required to "Solo from front seat only"."

Factual narrative

On December 21, 2005, about 1638 central standard time, an experimental amateur-built Elliott Quad City Ultralight Challenger II, N115BT, operated by an unlicensed pilot, sustained substantial damage on impact with terrain following a flat spin encountered on base turn to Phillips Field Airport (MO23), near California, Missouri. The personal flight was operating under 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed at the time of the accident. No flight plan was on file. The pilot sustained minor injuries. The local flight originated from MO23 about 1500.

The pilot, in part, stated:

On Dec. 21, 2005, I ... lost control, went into a stall-spin, and landed nearly

flat in the ditch just south of Little Moniteau Road. ... The accident was

caused by pilot error. I forgot that the owner's manual said that "Solo flight

is restricted to the front seat." ... I had started practicing landings on Dec. 21,

2005, at 3:00 PM. ... After two test flights I decided to see if I could taxi the

plane from the rear seat. I did that and I noticed that I could see the entire

instrument panel from the rear seat. I intended to taxi some more, but then

impulsively I decided to take off. I forgot that one either has to solo from the

front seat or add weight to the front seat to solo from the rear seat. ... As I

turned base to the west I was still trying to trim the plane and lost attention to

airspeed. It must have dropped below 40 mph. This plane stalls at about 32

mph. I was trying to turn left final but the plane swung right, then entered a

stall-spin from about 400 ft. AGL. I tried two different maneuvers to get out

of the spin, but they did not work. I put the nose down to regain airspeed, then

I released the controls, to no avail. Then I kept some backpressure to keep the

plane spinning flat, and it spiraled down and hit the ground about 4:38 PM. ...

The pilot's safety recommendation was, "More training in type would have been useful. A placard could be required to "Solo from front seat only"."

Aircraft

Registration
N115BT
Reported as
Elliott Quad City Ultralight Challenger II
Category
Airplane, amateur-built
Serial number
CH2-01961436
Engine
Rotax 503, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
William R. Elliott
Airworthiness certificate
Special, Experimental (Special)
Departed
MO23 · California, MO

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
59
Injuries
Minor
Medical
Sport pilot
Seat
Rear
Flight hours
130 total · 100 in this make and model

Weather

Conditions
Visual (VMC) · Day
Observed at
JEF

FAA reports on this event · 1

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