# NTSB CEN13LA071: Scott Ironsides, N1879, East Troy, WI, November 24, 2012 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: November 24, 2012, 15:24 local (21:24 UTC) - Place: East Troy, WI - Coordinates: 42.805278, -88.33361 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.8053&lon=-88.3336&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Aircraft structural failure](https://openairdocs.org/ntsb-events/337) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report May 23, 2013 - Report: Approved by Office Director - NTSB office: Central Region - Parties: FAA Flight Standards District Office - NTSB case key (mKey): 85663 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN13LA071 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/85663/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=85663 - Page: https://openairdocs.org/ntsb/CEN13LA071 ## Probable cause Failure of the steel weld fittings on the right main landing gear. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Fuselage: gear attach fittings (on fus)](https://openairdocs.org/ntsb-findings/01035343): Aircraft › Aircraft structures · Failure (probable cause); cases with it: [Scott IRONSIDES XS-1, 1 case](https://openairdocs.org/ntsb-findings/01035343/cases.md?model=05611BP), [All aircraft, 16 cases](https://openairdocs.org/ntsb-findings/01035343/cases.md) - [Action: incorrect action performance](https://openairdocs.org/ntsb-findings/02041015): Personnel issues › Action/decision · Owner/builder; cases with it: [Scott IRONSIDES XS-1, 1 case](https://openairdocs.org/ntsb-findings/02041015/cases.md?model=05611BP), [All aircraft, 1,386 cases](https://openairdocs.org/ntsb-findings/02041015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Aircraft structural failure](https://openairdocs.org/ntsb-events/337) (defining event); cases with it: [Scott IRONSIDES XS-1, 1 case](https://openairdocs.org/ntsb-events/337/sequence.md?model=05611BP), [All aircraft, 290 cases](https://openairdocs.org/ntsb-events/337/sequence.md) ## 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](https://openairdocs.org/deregistered/N1879-2018-01-03), registration cancelled 2018-01-03, S/N 1, built 1969 (OpenAirDocs) - Reported make and model: SCOTT Ironsides (XS-1) - Registry model: [Scott IRONSIDES XS-1](https://openairdocs.org/model/scott-ironsides-xs-1) (registry code 05611BP) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 1 - Airframe hours: 991 - Engines: 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 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 79; injuries: minor; 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 ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20121124025179A](https://openairdocs.org/incident/20121124025179A), Nov 24, 2012: Scott IRONSIDES XS-1, East Troy, WI, Substantial damage. On November 24, 2012 pilot departed from WI69 (Air Troy Estates) to the north on a pleasure flight. At approximately 1500 local time pilot return to WI69 and… ## Docket (2 files) The files NTSB released with the investigation on March 20, 2013, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=85663. 873 KB in all. - NTSB Form 6120.1-2, Pilot-Operator Aircraft Accident Report (item 1, .PDF, 622 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40386737&FileExtension=.PDF&FileName=NTSB%20Form%206120.1-2,%20Pilot-Operator%20Aircraft%20Accident%20Report-Redacted.PDF - Pre-accident photograph of N1879 (item 2, .PDF, 252 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40386542&FileExtension=.PDF&FileName=Pre-accident%20photograph%20of%20N1879-Master.PDF From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.