# NTSB GAA19CA485: Stinson 10, N34658, Yuba, CA, June 17, 2019

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: June 17, 2019, 12:13 local (19:13 UTC)
- Place: Yuba, CA
- Coordinates: 39.097778, -121.569725 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.0978&lon=-121.5697&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 April 13, 2020
- Report: Approved by Office Director
- NTSB office: General Aviation Accidents
- Parties: FAA
- NTSB case key (mKey): 100004
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA19CA485
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/100004/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=100004
- Page: https://openairdocs.org/ntsb/GAA19CA485

## Probable cause

The pilot's failure to maintain directional control during landing, which resulted in a 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: [Stinson 10A, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=8632102), [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 (probable cause); cases with it: [Stinson 10A, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=8632102), [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: [Stinson 10A, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=8632102), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md)
- [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Stinson 10A, 2 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=8632102), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md)

## Analysis

The pilot reported that, during landing, the airplane ground looped to the right, the left main landing gear collapsed, and the left wing impacted the ground. The airplane sustained substantial damage to the lower fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

## Factual narrative

The pilot of the tailwheel-equipped airplane reported that, during landing, the airplane ground looped to the right, the left main landing gear collapsed, and the left wing impacted the ground. The airplane sustained substantial damage to the lower fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation station located on the airport reported that, about the time of the accident, the wind was 210° at 5 knots. The pilot reported the wind was light and variable. The airplane landed on runway 14.

## Aircraft

- Registration: [N34658](https://openairdocs.org/deregistered/N34658-2022-04-02), registration cancelled 2022-04-02, S/N 7958 (OpenAirDocs)
- Reported make and model: Stinson 10 (A)
- Registry model: [Stinson 10A](https://openairdocs.org/model/stinson-10a) (registry code 8632102) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 7958
- Airframe hours: 1910.9
- Engines: Lycoming O-235 SERIES 115 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, May 3, 2019
- Departed: MYV, Yuba, CA
- Destination: MYV, Yuba, CA
- Airport: MYV, Yuba County, runway 14, 6,007 × 150 ft, asphalt
- Equipment: ADS-B, Electronic flight bag or handheld device

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 62; injuries: none; student; medical: class 3, waiver time limited special; seat: left; restraint: 3-point; flight hours: 72 total, 64 in this make and model, 8.1 in the last 90 days, 7.4 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 210° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 61 °F
- Altimeter: 29.79 inHg
- Observed at: KMYV

## Docket (2 files)

The files NTSB released with the investigation on January 17, 2020, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=100004. 3.3 MB in all.

- Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 3.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40480018&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF
- Accident Photo (item 2, .PDF, 147 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40480019&FileExtension=.PDF&FileName=Accident%20Photo-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.

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