# NTSB CEN13CA522: Great Lakes 2T-1A-2, N5761Z, Iowa City, IA, August 25, 2013 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 25, 2013, 09:00 local (14:00 UTC) - Place: Iowa City, IA - Coordinates: 41.63972, -91.548057 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.6397&lon=-91.5481&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report October 21, 2013 - Report: Approved by Office Director - NTSB office: Central Region - NTSB case key (mKey): 87960 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN13CA522 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/87960/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=87960 - Page: https://openairdocs.org/ntsb/CEN13CA522 ## Probable cause The pilot failed to maintain directional control of the airplane while landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Wind: gusts](https://openairdocs.org/ntsb-findings/03034045): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Great Lakes 2T-1A-2, 2 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md?model=3910101), [All aircraft, 1,199 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Great Lakes 2T-1A-2, 5 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=3910101), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/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: Loss of control on ground](https://openairdocs.org/ntsb-events/230); cases with it: [Great Lakes 2T-1A-2, 4 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=3910101), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Great Lakes 2T-1A-2, 3 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=3910101), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Great Lakes 2T-1A-2, 4 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=3910101), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that during the landing roll on runway 12, a gust of wind "weather vaned" the airplane to the right. The pilot attempted to correct the weather vane with the application of rudder but was unable to maintain directional control. The tail of the airplane started to rise and the airplane nosed over on the right side of the runway. The upper wings and the vertical stabilizer were substantially damaged. The pilot stated that there were no mechanical anomalies with the airplane prior to the accident. Wind at the time of the accident was recorded as 210 degrees at 7 knots. The pilot reported the wind as 160 degrees at 12 knots gusting to 16 knots. ## Factual narrative The pilot reported that during the landing roll to runway 12, a gust of wind "weather vaned" the airplane to the right. The pilot attempted to correct the weather vane with the application of rudder but was unable to maintain directional control. The tail of the airplane started to rise and the airplane nosed over on the right side of the runway. The upper wings and the vertical stabilizer were substantially damaged. The pilot stated that there were no mechanical anomalies with the airplane prior to the accident. Wind at the time of the accident was recorded as 210 degrees at 7 knots. The pilot reported the wind as 160 degrees at 12 knots gusting to 16 knots. ## Aircraft - Registration: [N5761Z](https://openairdocs.org/aircraft/N5761Z), registered now, S/N 0834, built 1980 (OpenAirDocs) - Reported make and model: GREAT LAKES 2T-1A-2 - Registry model: [Great Lakes 2T-1A-2](https://openairdocs.org/model/great-lakes-2t-1a-2) (registry code 3910101) (OpenAirDocs) - Category: Airplane - Serial number: 0834 - Airframe hours: 1065 - Engines: Lycoming AEIO-360 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Aerobatic - Last inspection: Annual, December 1, 2012 - Departed: KALO, Waterloo, IA - Destination: KIOW, Iowa City, IA - Airport: KIOW, Iowa City Municipal Airport, runway 12, 3,900 × 75 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; injuries: none; commercial; airplane ratings: single-engine land, single-engine sea; medical: class 2, with waivers/limitations; last flight review November 17, 2012; seat: rear; flight hours: 1,900 total, 212 in this make and model, 1,825 as pilot in command, 5 in the last 90 days, 3 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 210° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 77 °F, dew point 68 °F - Altimeter: 30.22 inHg - Observed at: KIOW ## Docket (2 files) The files NTSB released with the investigation on October 21, 2013, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=87960. 5.5 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 4.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40400281&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - CEN13CA522 - Additional Statement Submitted on September 28, 2013 (item 2, .PDF, 841 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40402012&FileExtension=.PDF&FileName=CEN13CA522%20-%20Additional%20Statement%20Submitted%20on%20September%2028,%202013-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.