# NTSB investigations: Jacobs L4 /R755-7: Loss of control on ground

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB WPR25LA125](https://openairdocs.org/ntsb/WPR25LA125.md): Cessna 190 · Idaho Falls, ID · Accident · No injuries · Class 4 · Limited · Final report · Apr 11, 2025 · N190CG · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll in crosswind conditions.
- [NTSB ERA25LA036](https://openairdocs.org/ntsb/ERA25LA036.md): Cessna 195A · Bethel, PA · Accident · Minor injuries · Class 4 · Limited · Final report · Oct 31, 2024 · N3083B · Substantial damage
  > The pilot’s failure to maintain directional control during landing.
- [NTSB CEN24LA280](https://openairdocs.org/ntsb/CEN24LA280.md): Cessna 195A · Greenville, MI · Accident · No injuries · Class 4 · Limited · Final report · Jul 19, 2024 · N1524D · Substantial damage
  > The pilot’s loss of directional control during landing which led to a ground-loop.
- [NTSB CEN21LA422](https://openairdocs.org/ntsb/CEN21LA422.md): Cessna 195 · Ypsilanti, MI · Accident · No injuries · Class 4 · Limited · Final report · Sep 16, 2021 · N4358V · Substantial damage
  > The pilot’s failure to maintain directional control during taxi, which resulted in a ground loop.
- [NTSB GAA18CA332](https://openairdocs.org/ntsb/GAA18CA332.md): Waco YKS 7 · Fairhope, AL · Accident · No injuries · Data collection · Final report · Jun 8, 2018 · N17473 · Substantial damage
  > The pilot’s failure to maintain directional control while landing.
- [NTSB ERA16CA304](https://openairdocs.org/ntsb/ERA16CA304.md): Cessna 195 · Livermore Falls, ME · Accident · No injuries · Data collection · Final report · Aug 27, 2016 · N4352V · Substantial damage
  > The pilot's failure to maintain directional control during landing roll out.
- [NTSB GAA16CA238](https://openairdocs.org/ntsb/GAA16CA238.md): Waco YKS 7 · Millersburg, OH · Accident · No injuries · Data collection · Final report · May 13, 2016 · N17734 · Substantial damage
  > The pilot's loss of directional control during landing in gusting wind conditions resulting in excessive brake application, and airplane nose over.
- [NTSB WPR14CA083](https://openairdocs.org/ntsb/WPR14CA083.md): Cessna 195A · Salinas, CA · Accident · No injuries · Data collection · Final report · Dec 31, 2013 · N369JJ · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll, which resulted in a ground loop.
- [NTSB CEN10CA213](https://openairdocs.org/ntsb/CEN10CA213.md): Waco YPF-7 · Houston, TX · Accident · No injuries · Data collection · Final report · Mar 27, 2010 · N32077 · Substantial damage
  > The pilot's inability to maintain control during landing due to the failure of the tailwheel locking mechanism to remain engaged prior to landing.
- [NTSB WPR09CA465](https://openairdocs.org/ntsb/WPR09CA465.md): Cessna 195A · Upland, CA · Accident · No injuries · Data collection · Final report · Sep 25, 2009 · N195MD · Substantial damage
  > The pilot's failure to maintain directional control of the airplane during the takeoff roll.
- [NTSB ERA09CA350](https://openairdocs.org/ntsb/ERA09CA350.md): Beech C17B · Stevensville, MD · Accident · No injuries · Data collection · Final report · Jun 14, 2009 · N47024 · Substantial damage
  > The pilot’s failure to maintain directional control of the airplane during the landing roll.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('35003')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '230'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/230/cases?engine=35003

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