CEN13LA071

NTSB accident investigation · Scott Ironsides · East Troy, WI · November 24, 2012

Accident · Minor injuriesLimited investigationFinal report
Date
November 24, 2012, 15:24 local (21:24 UTC)
Place
East Troy, WI
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1879Scott Ironsides
Defining event
Landing-landing roll: Aircraft structural failure
Weather
Visual (VMC) · Day
Status
Completed · report May 23, 2013
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20121124025179A
Case key
85663

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

On this page

Probable cause

Failure of the steel weld fittings on the right main landing gear.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

During the landing roll, the right landing gear steel fitting welds broke, and the axle, brake, wheel, and wheel fairing separated from the airplane. The right landing gear strut dug into the sod and the airplane cartwheeled, coming to rest inverted in the center of the runway. The left wing separated from the airplane, and the vertical and horizontal stabilizers were crushed. No other anomalies were found that would have precluded normal operation of the airplane.

Factual narrative

On November 24, 2012, at 1524 central standard time, an Ironsides XS-1, N1879, nosed over on landing at Air Troy Estates Airport (WI69), East Troy, Wisconsin. The private pilot, the sole occupant on board, sustained minor injuries. The airplane was substantially damaged. The airplane was registered to and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed at the time of the accident, and no flight plan had been filed. The local flight originated from WI69 about 1400. According to the pilot’s accident report, he made a normal landing on the grass airstrip. During the landing roll, the right landing gear steel fitting welds broke and the axle, brake, wheel, and wheel fairing separated from the airplane. The right landing gear strut dug into the sod and the airplane cartwheeled, coming to rest inverted in the center of the runway. The pilot said the left wing separated from the airplane and the vertical and horizontal stabilizers were crushed. No other anomalies were found.

Aircraft

Registration
N1879
Reported as
Scott Ironsides (XS-1)
Category
Airplane, amateur-built
Serial number
1
Airframe hours
991
Engine
Continental O-200-A, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Ronald G. Scott
Registered owner
Ronald G. Scott
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · November 17, 2012 · 2 hours before
Departed
WI69 · East Troy, WI
Destination
WI69 · East Troy, WI
Airport
WI69 · East Troy Estates Airport, runway 01, 1,700 × 50 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
79
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Last flight review
May 21, 2011
Seat
Single
Flight hours
2,000 total · 990 in this make and model · 26 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None

Docket · 2

The files NTSB released with the investigation on March 20, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 873 KB in all.

FAA reports on this event · 1

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