# NTSB WPR23LA189: Cessna A185F, N185MG, Twisp, WA, May 14, 2023 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: May 13, 2023, 17:00 local (May 14, 2023, 00:00 UTC) - Place: Twisp, WA · Twisp Municipal Airport - Coordinates: 48.350585, -120.09395 - Nearby events: https://openairdocs.org/map.md?lat=48.3506&lon=-120.0940&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: 3 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 174531 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR23LA189 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/174531/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=174531 - Page: https://openairdocs.org/ntsb/WPR23LA189 ## Probable cause The pilot’s loss of directional control during landing, which resulted in a runway excursion and ground loop. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna A185F, 56 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072821), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot; cases with it: [Cessna A185F, 71 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072821), [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) (defining event); cases with it: [Cessna A185F, 75 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072821), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The flight instructor reported that while demonstrating touch and go landings, he completed a normal touchdown. On rollout, the airplane began to veer to the right. The pilot attempted to correct with full left rudder and brake; however, the airplane exited the right side of the runway and bounced up a small dirt embankment. The airplane completed a full rotation and the left wing impacted terrain, which resulted insubstantial damage to the left aileron. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N185MG](https://openairdocs.org/aircraft/N185MG), registered now, S/N 18502902, built 1975 (OpenAirDocs) - Reported make and model: CESSNA A185F - Registry model: [Cessna A185F](https://openairdocs.org/model/cessna-a185f) (registry code 2072821) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18502902 - Year built: 1975 - Airframe hours: 2473.2 - Engines: Continental IO-550-D28 285 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 7, 2022, 66.2 hours before - Departed: 2S0, Twisp, WA - Airport: 2S0, Twisp Muni, runway 10, 2,701 × 60 ft, asphalt - Equipment: Electronic primary flight display, ADS-B, Auto-pilot ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 36; injuries: none; flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review March 17, 2023; seat: right; restraint: 4-point; flight hours: 4,485 total, 40 in this make and model, 3,641 as pilot in command, 90 in the last 90 days, 51 in the last 30 days, 6 in the last 24 hours - Pilot; age 39; injuries: none; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review June 8, 2021; seat: left; restraint: 4-point; flight hours: 289 total, 11 in this make and model, 210 as pilot in command, 12 in the last 90 days, 9 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: 11,000 ft overcast - Temperature: 84 °F, dew point 41 °F - Altimeter: 30.25 inHg - Observed at: KS52, 5 nm away - METAR: METAR KS52 140015Z AUTO 21003KT 10SM SCT075 BKN110 29/05 A3024 RMK AO2 T02920052= ## 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 20230513007969A](https://openairdocs.org/incident/20230513007969A), May 13, 2023: Cessna A185F, Twisp, WA, Substantial damage. The CFI was demonstrating a stabilized approach to landing to the pilot[privacy data omitted]of the aircraft during a training flight. The landing was to a… ## Docket (4 files) The files NTSB released with the investigation on November 2, 2023, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=174531. 3.6 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=15591121&FileExtension=pdf&FileName=6120%20WPR23LA189%20N185MG_Redacted-Rel.pdf - Memorandum for record a�� email, pilot rated student (item 2, PDF, 1 page, 97 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16234762&FileExtension=pdf&FileName=Memorandum%20of%20Record%20Reberto%2010162023-Rel.pdf - Memorandum for record a�� telephone interview, pilot (item 3, PDF, 1 page, 72 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16251459&FileExtension=pdf&FileName=Memorandum%20of%20Record%20Lowell%20Neal%2010042023%20Phone-Rel.pdf - Photos (item 4, PDF, 2 pages, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=15595700&FileExtension=pdf&FileName=Pic%20WPR23LA189%20N185MG-Rel.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.