# NTSB CEN22LA338: Waco Classic YMF-5C, N140W, Oshkosh, WI, July 23, 2022 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: July 23, 2022, 13:15 local (18:15 UTC) - Place: Oshkosh, WI - Coordinates: 43.98, -88.55 - Nearby events: https://openairdocs.org/map.md?lat=43.9800&lon=-88.5500&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: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Central Region - Parties: FAA FSDO - NTSB case key (mKey): 105565 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN22LA338 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/105565/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=105565 - Page: https://openairdocs.org/ntsb/CEN22LA338 ## Probable cause The pilot’s failure to maintain directional control during the landing roll with a tailwind. ## 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: [Waco Classic YMF-F5C, 5 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=9600425), [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: [Waco Classic YMF-F5C, 6 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=9600425), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Wind: tailwind](https://openairdocs.org/ntsb-findings/03034015): Environmental issues › Conditions/weather/phenomena · Effect on operation (probable cause); cases with it: [Waco Classic YMF-F5C, 1 case](https://openairdocs.org/ntsb-findings/03034015/cases.md?model=9600425), [All aircraft, 594 cases](https://openairdocs.org/ntsb-findings/03034015/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: [Waco Classic YMF-F5C, 1 case](https://openairdocs.org/ntsb-events/400/sequence.md?model=9600425), [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: [Waco Classic YMF-F5C, 5 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=9600425), [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: [Waco Classic YMF-F5C, 1 case](https://openairdocs.org/ntsb-events/060/sequence.md?model=9600425), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Waco Classic YMF-F5C, 2 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=9600425), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The pilot reported that he landed on the green dot and steered toward the north edge of the runway to clear quickly as instructed by air traffic control. The airplane started to “get loose” and the pilot attempted to recover with no response. The airplane “rapidly turned to the left” and ground looped. A postaccident examination revealed substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. At the time of the accident the pilot was landing on runway 27 with wind from 070° at 8 knots. ## Aircraft - Registration: [N140W](https://openairdocs.org/aircraft/N140W), registered now, S/N F5C-8-140, built 2014 (OpenAirDocs) - Reported make and model: WACO CLASSIC AIRCRAFT YMF-5C - Registry model: [Waco Classic YMF-F5C](https://openairdocs.org/model/waco-classic-ymf-f5c) (registry code 9600425) (OpenAirDocs) - Registry engine: [Jacobs R-755A2M](https://openairdocs.org/engine/jacobs-r-755a2m) (registry code 35020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: F5C-8-140 - Year built: 2014 - Airframe hours: 569 - Engines: JACOBS R-755A2M reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Aerobatic; Standard, Normal; Standard, Utility - Last inspection: Annual, July 22, 2022 - Departed: KBUU, Burlington, WI - Destination: KOSH, Oshkosh, WI - Airport: OSH, Wittman Rgnl, runway 27, 6,179 × 150 ft, concrete - Equipment: Electronic primary flight display, Electronic multifunction display, Angle of attack indicator, ADS-B, Onboard weather ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 62; injuries: none; private, flight instructor, commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: basicmed, with waivers/limitations; last flight review May 11, 2022; seat: rear; restraint: 5-point; flight hours: 5,790 total, 611 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 70° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 88 °F, dew point 72 °F - Altimeter: 29.88 inHg - Observed at: KOSH - METAR: METAR KOSH 231753Z 07008KT 10SM CLR 31/22 A2988 RMK AO2 SLP101 T03060217 10311 20217 58008= ## 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 20220723013009A](https://openairdocs.org/incident/20220723013009A), Jul 23, 2022: Waco Classic Aircraft YMF-F5C, Substantial damage. Cleared to land rwy 27 with winds 09008 due to a mass arrival of bonanzas rwy 36. Main wheel landing was normal but before he could complete the landing, the… ## Docket (2 files) The files NTSB released with the investigation on December 15, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=105565. 2.8 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=14684387&FileExtension=pdf&FileName=6120%20N140W%20KOSH_Redacted-Rel.pdf - Accident report pictures (item 2, PDF, 3 pages, 607 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14684162&FileExtension=pdf&FileName=Report%20Pictures-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.