# NTSB WPR20CA168: Stinson 108, N87607, Yakima, WA, June 4, 2020 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Data collection · Final report - Date: June 4, 2020, 11:45 local (18:45 UTC) - Place: Yakima, WA - Coordinates: 46.568054, -120.544166 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=46.5681&lon=-120.5442&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-aborted after touchdown: 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: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 101390 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR20CA168 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/101390/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=101390 - Page: https://openairdocs.org/ntsb/WPR20CA168 ## Probable cause The pilot's failure to maintain directional control of the airplane during an aborted landing, which resulted in a ground loop, runway excursion, and subsequent nose over. ## 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: [Stinson 108, 7 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=9230402), [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: [Stinson 108, 5 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=9230402), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-aborted after touchdown: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Stinson 108, 7 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=9230402), [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: [Stinson 108, 5 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=9230402), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Stinson 108, 7 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=9230402), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot of the tailwheel-equipped airplane reported that, during the landing roll, the airplane veered to the left, and he elected to abort the landing. The pilot applied full power and the airplane momentarily became airborne but shortly thereafter, it settled back onto the runway and ground looped to the left. The airplane exited the runway surface and nosed over. The airplane sustained 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. ## Aircraft - Registration: [N87607](https://openairdocs.org/aircraft/N87607), registered now, S/N 108-8, built 1945 (OpenAirDocs) - Reported make and model: Stinson 108 (Undesignat) - Registry model: [Stinson 108](https://openairdocs.org/model/stinson-108) (registry code 9230402) (OpenAirDocs) - Registry engine: [Franklin 6A4150 series](https://openairdocs.org/engine/franklin-6a4150-series) (registry code 27024, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 108-8 - Year built: 1945 - Airframe hours: 4000 - Engines: Lycoming O-360 A1A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Unknown, December 13, 2019 - Departed: YKM, Yakima, WA - Destination: YKM, Yakima, WA - Airport: YKM, Yakima Air Terminal/Mcallister, runway 04, 3,835 × 150 ft, asphalt - Equipment: Electronic flight bag or handheld device, ADS-B, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 66; injuries: none; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review April 20, 2020; seat: left; restraint: 4-point; flight hours: 2,116 total, 62 in this make and model, 2,101 as pilot in command, 70 in the last 90 days, 43 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 37 °F - Altimeter: 29.98 inHg - Observed at: KYKM ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Incident 20200604007839I](https://openairdocs.org/incident/20200604007839I), Jun 4, 2020: Stinson 108, Yakima, WA, Minor damage. Pilot conducted a wheel landing on runway 4, at the proper speed and landed on runway centerline. The airplane swerved to the left and the pilot was unable to… ## Other investigations on N87607 (1) 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. - [NTSB LAX92LA013](https://openairdocs.org/ntsb/LAX92LA013), Oct 12, 1991: Stinson 108-8 (N87607), Susanville, CA, substantial damage. Probable cause: AN INADVERTENT STALL DUE TO THE FAILURE OF THE PILOT TO MAINTAIN A CORRECT AIRSPEED DURING THE APPROACH. ## Docket (2 files) The files NTSB released with the investigation on September 10, 2020, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=101390. 1.3 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 545 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40486818&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Pictures (item 2, .PDF, 729 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40486819&FileExtension=.PDF&FileName=Accident%20Pictures-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.