# NTSB WPR24LA235: Piper PA-22-150, N6931D, Sunriver, OR, July 6, 2024

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: July 6, 2024, 13:35 local (20:35 UTC)
- Place: Sunriver, OR
- Coordinates: 43.876312, -121.45305
- Nearby events: https://openairdocs.org/map.md?lat=43.8763&lon=-121.4531&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: Western Pacific Region
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 194645
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR24LA235
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/194645/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=194645
- Page: https://openairdocs.org/ntsb/WPR24LA235

## Probable cause

The pilot’s loss of control during landing roll with a gusty tailwind.

## 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 · Ability to respond/compensate (probable cause); cases with it: [Piper PA-22-150, 7 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md?model=7102210), [All aircraft, 1,199 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md)
- [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Capability exceeded (probable cause); cases with it: [Piper PA-22-150, 38 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=7102210), [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: [Piper PA-22-150, 7 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md?model=7102210), [All aircraft, 1,199 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md)
- [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Piper PA-22-150, 10 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=7102210), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/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: [Piper PA-22-150, 48 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=7102210), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md)

## Analysis

The pilot reported that prior to landing, he obtained the current weather, which included the current wind. After he performed a normal crosswind landing, during the landing roll, the airplane encountered a gust of wind from the right, and the right wing began to rise. The pilot attempted to correct the movement with full aileron and rudder control inputs; however, the wing continued to rise as the airplane slid to the left and weathervaned to the right. The left wing impacted the runway, and the left main landing gear collapsed, which resulted in substantial damage to the left wing and fuselage. The pilot reported no preimpact mechanical malfunctions or anomalies that could have precluded normal operation. At the time of the accident, the pilot was landing on runway 18, with the wind from 240° at 8 knots, however, recorded video of the accident showed that at the time of the loss of control, a right quartering tailwind existed.

## Aircraft

- Registration: [N6931D](https://openairdocs.org/aircraft/N6931D), registered now, S/N 22-4859, built 1957 (OpenAirDocs)
- Reported make and model: PIPER PA-22-150
- Registry model: [Piper PA-22-150](https://openairdocs.org/model/piper-pa-22-150) (registry code 7102210) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 22-4859
- Year built: 1957
- Airframe hours: 4173
- Engines: Lycoming O-320 150 hp reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Tri-Pacer One LLC
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 18, 2024
- Departed: LGD, La Grande, OR
- Destination: Same as departure
- Airport: S21, Sunriver, runway 18/36, 5,460 × 75 ft, asphalt
- Equipment: ADS-B

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 82; injuries: none; airline transport, flight engineer, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: basicmed, without waivers/limitations; last flight review January 29, 2023; seat: left; restraint: 3-point; flight hours: 21,321 total, 1,101 in this make and model, 7,991 as pilot in command, 11 in the last 90 days, 9 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 280° at 10 knots, gusting 16
- Visibility: 9 statute miles
- Lowest ceiling: none
- Temperature: 93 °F, dew point 19 °F
- Altimeter: 30.16 inHg
- Observed at: KS21
- METAR: KS21 062035Z AUTO 28010G16KT 9SM CLR 34/M07 A3016 RMK AO2

## 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 20240706019649A](https://openairdocs.org/incident/20240706019649A), Jul 6, 2024: Piper PA-22-150, Sunriver, OR, Substantial damage. The aircraft departed lagrande airport (lgd) at approximately 11:30AM intending to fly from there to Sunriver(S21). The flight was uneventful and at…

## Docket (3 files)

The files NTSB released with the investigation on February 12, 2025, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=194645. 6.3 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 3.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17386664&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf
- Video of accident (item 2, MP4, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17393232&FileExtension=mp4&FileName=tripacer-Rel.mp4
- Accident photographs (item 3, PDF, 2 pages, 483 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17392821&FileExtension=pdf&FileName=Accident%20Photographs-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.

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