# NTSB investigations: Pratt & Whitney R-2800 series, WI

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 CEN16LA274](https://openairdocs.org/ntsb/CEN16LA274.md): Chance Vought F4U 5 · East Troy, WI · Accident · No injuries · Limited investigation · Final report · Jul 19, 2016 · N179PT · Substantial damage
  > A failure of the O-ring in the left brake master cylinder for reasons that could not be determined, which resulted in a loss of directional control during landing.
- [NTSB CHI99FA266](https://openairdocs.org/ntsb/CHI99FA266.md): Chance Vought F4U-4 · Oshkosh, WI · Accident · Serious injuries · Field investigation · Final report · Jul 29, 1999 · N712RD · 3 aircraft · Destroyed
  > The pilot of the other airplane not following the instructions briefed by the formation leader, and the pilot's maneuvering his airplane to avoid the airplane in front of him.
- [NTSB CHI93FA296](https://openairdocs.org/ntsb/CHI93FA296.md): Grumman G58A · Oshkosh, WI · Accident · Serious injuries · Field investigation · Final report · Aug 1, 1993 · N3025 · Substantial damage
  > The pilot-in-command's inadvertent use of the mixture resulting in a lean mixture.
- [NTSB UNK64X3499](https://openairdocs.org/ntsb/UNK64X3499.md): Douglas A-26B · Madison, WI · Accident · No injuries · Closed · Aug 20, 1964 · N4050A · Substantial damage

## 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."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52026'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52026&state=WI

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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.