# NTSB investigations: Allison 250-C47 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 CEN23FA019](https://openairdocs.org/ntsb/CEN23FA019.md): Bell 407 · Morgan City, LA · Accident · 1 fatal · Class 3 · Field · Final report · Oct 26, 2022 · N34BM · Destroyed
  > The pilot’s loss of consciousness due to a cardiovascular event.
- [NTSB CEN22FA100](https://openairdocs.org/ntsb/CEN22FA100.md): Bell 407 · Houma, LA · Accident · 2 fatal · Class 3 · Field · Final report · Jan 14, 2022 · N167RL · Destroyed
  > The pilot’s sudden loss of consciousness for undetermined reasons during cruise flight, which resulted in a loss of control and impact with terrain.
- [NTSB CEN19FA095](https://openairdocs.org/ntsb/CEN19FA095.md): Bell 407 · Galliano, LA · Accident · 2 fatal · Class 2 · Field · Final report · Mar 10, 2019 · N577AL · Destroyed
  > The pilot's loss of control during cruise flight as a result of spatial disorientation while operating the helicopter in close proximity to terrain in marginal meteorological conditions.
- [NTSB CEN17FA112](https://openairdocs.org/ntsb/CEN17FA112.md): Bell 407 · Chauvin, LA · Accident · 1 fatal · Field investigation · Final report · Feb 27, 2017 · N1371 · Destroyed
  > The pilot's failure to maintain proper altitude resulting in a collision with water for reasons that could not be determined based on the available information.
- [NTSB CEN15LA265](https://openairdocs.org/ntsb/CEN15LA265.md): Bell 407 · Pecan Island, LA · Accident · No injuries · Limited investigation · Final report · Jun 8, 2015 · N501PH · Substantial damage
  > The fatigue fracture of the tail rotor gearbox attachment studs, which resulted in a loss of tail rotor control and a subsequent hard landing.
- [NTSB CEN13FA003](https://openairdocs.org/ntsb/CEN13FA003.md): Bell 407 · Intracoastal City, LA · Accident · 1 fatal · Field investigation · Final report · Oct 5, 2012 · N406AL · Substantial damage
  > The pilot’s decision to attempt a local flight in marginal visual meteorological conditions and his subsequent loss of control following an inadvertent encounter with instrument metrological conditions shortly after takeoff.
- [NTSB FTW03TA156](https://openairdocs.org/ntsb/FTW03TA156.md): Bell 407 · Franklin, LA · Accident · No injuries · Final report · May 19, 2003 · N991SP · Substantial damage
  > The loss of tail rotor effectiveness due to the inadequate maintenance performed by other company personnel.
- [NTSB FTW03FA117](https://openairdocs.org/ntsb/FTW03FA117.md): Bell 407 · Houma, LA · Accident · No injuries · Field investigation · Final report · Mar 24, 2003 · N501PH · Substantial damage
  > The loss of tail rotor drive and anti-torque control resulting from the fracture and separation of the #5 tail rotor drive segment due to the overtemperature and subsequent failure of the #5 hangar bearing.

## 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 ('03029'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03029&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.