# NTSB investigations: Pratt & Whitney R-1830 series, 1971

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 MIA72AM038](https://openairdocs.org/ntsb/MIA72AM038.md): Douglas DC-3 · St Maarten (Atlantic Ocean) · Accident · No injuries · Closed · Oct 2, 1971 · N1981W · Destroyed
- [NTSB CHI72AC023](https://openairdocs.org/ntsb/CHI72AC023.md): Douglas DC-3 · Peotone, IL · Accident · Serious injuries · Closed · Sep 6, 1971 · N44992 · Minor damage
- [NTSB SEA72AS004](https://openairdocs.org/ntsb/SEA72AS004.md): Douglas DC-3C · Redmond, OR · Accident · No injuries · Closed · Jul 26, 1971 · N51041 · Substantial damage
- [NTSB NYC72AN006](https://openairdocs.org/ntsb/NYC72AN006.md): Douglas DC-3 · Windsor Lks, CT · Accident · Minor injuries · Closed · Jul 16, 1971 · N74844 · Substantial damage
- [NTSB FTW71IF082](https://openairdocs.org/ntsb/FTW71IF082.md): Douglas DC-3A · Okla.City, OK · Incident · No injuries · Closed · Jun 11, 1971 · N692A · Minor damage
- [NTSB MIA71RKA11](https://openairdocs.org/ntsb/MIA71RKA11.md): Douglas DC-3A · East End, U.S. Virgin Islands · Accident · Serious injuries · Closed · Apr 5, 1971 · N57372 · 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 year(c."eventDate") = 1971
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52020&year=1971

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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.