# NTSB investigations: Rolls-Royce 250 20&30 series, LA

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 GAA16CA439](https://openairdocs.org/ntsb/GAA16CA439.md): Bell 206 L4 · Broussard, LA · Accident · No injuries · Data collection · Final report · Aug 18, 2016 · N7898X · Substantial damage
  > The pilot's failure to attain a proper touchdown point, which resulted in the helicopter sliding off the aft end of the transport dolly.
- [NTSB CEN10IA397](https://openairdocs.org/ntsb/CEN10IA397.md): Bell 206 · Gulf of Mexico, LA · Incident · No injuries · Incident investigation · Final report · Jul 12, 2010 · N523RL · Minor damage
  > Improper reassembly of the collective flight controls by maintenance personnel. Contributing to the incident were inadequate postmaintenance examinations by maintenance personnel and inadequate preflight inspections by two pilots.
- [NTSB CEN09LA198](https://openairdocs.org/ntsb/CEN09LA198.md): Bell 206 · Galliano, LA · Accident · No injuries · Limited investigation · Final report · Mar 2, 2009 · N410RL · Substantial damage
  > The failure of the tail rotor driveshaft and coupling during engine start due to the mechanic's failure to properly reattach the tail rotor driveshaft and coupling during maintenance.

## 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" = 'LA' 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 ('54584'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=54584&state=LA

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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.