# NTSB investigations: Allison 250-C30 series, Gulf of Mexico

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 CEN23LA064](https://openairdocs.org/ntsb/CEN23LA064.md): Bell 206-L4 · Gulf of Mexico (Gulf of Mexico) · Accident · Minor injuries · Class 3 · Limited · Final report · Dec 15, 2022 · N414RL · Substantial damage
  > The pilot’s improper takeoff technique that allowed the helicopter skid to drift into a helideck light, resulting in a dynamic rollover.
- [NTSB CEN11LA252](https://openairdocs.org/ntsb/CEN11LA252.md): Bell 206L-3 · (Gulf of Mexico) · Accident · Minor injuries · Limited investigation · Final report · Mar 24, 2011 · N32041 · Substantial damage
  > The loss of engine power due to an engine compressor stall as a result of ingesting methane gas during takeoff.
- [NTSB DFW06IA151](https://openairdocs.org/ntsb/DFW06IA151.md): Bell 206L-1 · South Pass 57 (Gulf of Mexico) · Incident · Serious injuries · Incident investigation · Final report · Jun 6, 2006 · N272M · No damage
  > The passenger's failure to follow procedures associated with operations in the vicinity of the helicopter and his failure to see/avoid the tail rotor of the helicopter.

## 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" = 'GM' 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 ('03015'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03015&state=GM

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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.