# NTSB investigations: Pratt & Whitney PT6 series, 2011

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 WPR11LA277](https://openairdocs.org/ntsb/WPR11LA277.md): Bell 212 · Mesa, AZ · Accident · Serious injuries · Limited investigation · Final report · Jun 21, 2011 · N49678 · Destroyed
  > The pilot's failure to maintain helicopter control while in a low hover.
- [NTSB WPR11FA163](https://openairdocs.org/ntsb/WPR11FA163.md): Sikorsky S-58ET · El Segundo, CA · Accident · Serious injuries · Field investigation · Final report · Mar 13, 2011 · N33602 · Substantial damage
  > A partial loss of engine power and the failure of the external hook to release the load for undetermined reasons.

## 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") = 2011
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52033'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52033&year=2011

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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.