# NTSB GAA15CA067: Maule M 4-220C, N2058U, Rigby, ID, May 11, 2015 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: May 11, 2015, 10:15 local (16:15 UTC) - Place: Rigby, ID - Coordinates: 43.642501, -111.929443 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.6425&lon=-111.9294&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report July 8, 2015 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA- Salt Lake City FSDO - NTSB case key (mKey): 91162 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA15CA067 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/91162/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=91162 - Page: https://openairdocs.org/ntsb/GAA15CA067 ## Probable cause The pilot's failure to maintain directional control of the airplane during landing roll. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Maule M-4-220C, 6 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=5460114), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Maule M-4-220C, 6 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=5460114), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Wind: gusts](https://openairdocs.org/ntsb-findings/03034045): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Maule M-4-220C, 1 case](https://openairdocs.org/ntsb-findings/03034045/cases.md?model=5460114), [All aircraft, 1,199 cases](https://openairdocs.org/ntsb-findings/03034045/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: Other weather encounter](https://openairdocs.org/ntsb-events/400); cases with it: [Maule M-4-220C, 2 cases](https://openairdocs.org/ntsb-events/400/sequence.md?model=5460114), [All aircraft, 1,127 cases](https://openairdocs.org/ntsb-events/400/sequence.md) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Maule M-4-220C, 6 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=5460114), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Maule M-4-220C, 4 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=5460114), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The pilot of the tailwheel-equipped airplane reported that during the landing roll, a wind gust elevated the right wing and the airplane veered right and exited the runway. The left main landing gear collapsed during the runway excursion, and the left wing struck the ground resulting in substantial damage. The pilot reported no pre-impact mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative The pilot of the tailwheel-equipped airplane reported that during the landing roll, a wind gust elevated the right wing and the airplane veered right and exited the runway. The left main landing gear collapsed during the runway excursion, and the left wing struck the ground resulting in substantial damage. The pilot reported no pre-impact mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N2058U](https://openairdocs.org/deregistered/N2058U-2015-09-29), registration cancelled 2015-09-29, S/N 2052C, built 1970 (OpenAirDocs) - Reported make and model: MAULE M 4-220C (220C) - Registry model: [Maule M-4-220C](https://openairdocs.org/model/maule-m-4-220c) (registry code 5460114) (OpenAirDocs) - Registry engine: [Franklin 6A&6V335 series](https://openairdocs.org/engine/franklin-6a-6v335-series) (registry code 27020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 2052C - Year built: 1970 - Airframe hours: 1393.1 - Engines: Franklin 6A-350-C1 220 horsepower reciprocating - Damage: Substantial damage - Flight: Flight test, Part 91 - Operator: Jenkins Michael D - Registered owner: Jenkins Michael D - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 6, 2015, 1 hours before - Departed: U56, Rigby, ID - Destination: U56, Rigby, ID - Airport: U56, City of Rigby, runway 01, 3,500 × 50 ft, asphalt - Equipment: Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 63; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review January 30, 2015; seat: left; restraint: lap only; flight hours: 371 total, 61 in this make and model, 311 as pilot in command, 1 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 54 °F, dew point 23 °F - Altimeter: 30.07 inHg - Observed at: IDA, 10 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 (OpenAirDocs). - [Accident 20150511006839A](https://openairdocs.org/incident/20150511006839A), May 11, 2015: Maule M-4-220C, Rigby, ID, Substantial damage. Gear collapse, landing drifted off runway, turned. Pilot stated concerning the ground loop event that occurrred on 5/11/2015, in Maule, N2058U, notice upon… ## Docket (4 files) The files NTSB released with the investigation on June 30, 2015, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=91162. 2.2 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40428699&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Memorandum For Record - METAR KU56 (1015 MDT) (item 2, .PDF, 102 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40428700&FileExtension=.PDF&FileName=Memorandum%20For%20Record%20-%20METAR%20KU56%20(1015%20MDT)-Master.PDF - Photo 1 - Left Wing (Courtesy of FAA) (item 3, .PDF, 65 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40428701&FileExtension=.PDF&FileName=Photo%201%20-%20Left%20Wing%20(Courtesy%20of%20FAA)-Master.PDF - Photo 2 - Left Wing and Aileron (Courtesy of FAA) (item 4, .PDF, 54 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40428702&FileExtension=.PDF&FileName=Photo%202%20-%20Left%20Wing%20and%20Aileron%20(Courtesy%20of%20FAA)-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.