# NTSB investigations: Pratt & Whitney R-2800 series, 1993

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 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 ANC93FA128](https://openairdocs.org/ntsb/ANC93FA128.md): Convair 240 · Boise, ID · Accident · No injuries · Field investigation · Final report · Jul 27, 1993 · N156PA · Substantial damage
  > The pilot's failure to extend the landing gear, and the check pilot's inadequate supervisiion. A factor in the accident was the pilot's inadequate upgrade training by the company.
- [NTSB CHI93DEE02](https://openairdocs.org/ntsb/CHI93DEE02.md): Douglas B-26B · Kankakee, IL · Accident · Minor injuries · Final report · Jun 27, 1993 · N8036E · Substantial damage
  > the failure of the piston assembly in the number ten cylinder of the right engine. A factor associated with the accident was the inoperative propeller feathering system for the right engine.

## 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 year(c."eventDate") = 1993
  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&year=1993

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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.