CHI96LA246

NTSB accident investigation · Elliot Steen Skybolt · Belleville, IL · July 24, 1996

Accident · Minor injuriesLimited investigationFinal report
Date
July 23, 1996, 20:00 local (Jul 24, 1996, 01:00 UTC)
Place
Belleville, IL
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N596EElliot Steen Skybolt
Weather
Visual (VMC) · Day
Status
Completed · report September 19, 1996
Report
Approved by Office Director
FAA report
19960723019579A
Case key
10316

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 inadequate weld on the landing gear by the builder/pilot.

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 - on ground/waterLanding - flare/touchdown
Landing gear - inadequateCause
Aircraft/equipment inadequateOwner/builderCause
Landing gear,tire - separation
Directional control - not possiblePilot in command

Analysis

During landing the airplane's left main gear tire separated from the aircraft, causing the airplane to ground loop. Examination of the axle attachment area on the left landing gear revealed signs consistent with a lack of welding penetration during manufacture.

Factual narrative

On July 23, 1996, at 2000 central daylight time (cdt), a experimental Steen Skybolt, N596E, was substantially damaged during landing on runway 16, at the Aero Estates Airport, Belleville, Illinois. The airplane was on its second flight since being completed by the builder/pilot. The pilot sustained minor injuries in the accident. The 14 CFR Part 91 flight was operating in visual meteorological conditions, and no flight plan had been filed.

Research revealed that during landing the airplane's left wheel separated from the aircraft. After the location of left wheel separation ground scar marks consistent with a ground loop were visible. The airplane's lower left wing sustained a broken spar and crushing damage in the accident.

Examination of the axle attachment area on the left landing gear revealed signs consistent with a lack of welding penetration during manufacture. No other abnormalities were noted on the airplane.

Aircraft

Registration
N596E
Reported as
Elliot Steen Skybolt (STEEN SKYB)
Category
Airplane, amateur-built
Serial number
58296
Airframe hours
1
Engine
Lycoming IO-540-G1B5, 290 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John B. Elliot
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · June 15, 1996 · 1 hours before
Departed
7IS2
Airport
7IS2 · Aero Estates, runway 16, 2,600 × 100 ft, grass/turf

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
55
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Rear
Flight hours
420 total · 1 in this make and model · 30 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 3 knots
Visibility
7 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 63 °F
Altimeter
29.00 inHg
Observed at
KBL, 15 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.