# NTSB investigations: Allison 250 SER 400HP, 1975

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 SEA76FTA09](https://openairdocs.org/ntsb/SEA76FTA09.md): Bell 206B · Miles City, MT · Accident · No injuries · Closed · Dec 14, 1975 · N59495 · Substantial damage
- [NTSB OAK76FVG27](https://openairdocs.org/ntsb/OAK76FVG27.md): Bell 206B · Alder Springs, CA · Accident · No injuries · Closed · Oct 4, 1975 · N59549 · Substantial damage
- [NTSB LAX76AL015](https://openairdocs.org/ntsb/LAX76AL015.md): Bell 206B · Van Nuys, CA · Accident · Minor injuries · Closed · Aug 26, 1975 · N59560 · Substantial damage
- [NTSB ANC76AA011](https://openairdocs.org/ntsb/ANC76AA011.md): Hughes 369HS · Deadhorse, AK · Accident · Minor injuries · Closed · Jul 21, 1975 · N717ST · Substantial damage
- [NTSB SEA7LFYE02](https://openairdocs.org/ntsb/SEA7LFYE02.md): Hughes 369HS · Elma, WA · Accident · Minor injuries · Closed · Jul 2, 1975 · N82AL · Substantial damage
- [NTSB ANC75AA070](https://openairdocs.org/ntsb/ANC75AA070.md): Bell 206B · Allison Lake, AK · Accident · No injuries · Closed · Mar 25, 1975 · N58012 · Substantial damage
- [NTSB LAX75DUJ55](https://openairdocs.org/ntsb/LAX75DUJ55-201470.md): Bell 206B · Glendale, AZ · Accident · No injuries · Closed · Jan 14, 1975 · N59383 · 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") = 1975
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03013', '03012'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03013&year=1975

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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.