# Fatal NTSB investigations: Bell 412

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 LAX07FA056](https://openairdocs.org/ntsb/LAX07FA056.md): Bell 412SP · Hesperia, CA · Accident · 3 fatal · Field investigation · Final report · Dec 11, 2006 · N410MA · Destroyed
  > The pilot's inadvertent encounter with instrument meteorological conditions and subsequent failure to maintain terrain clearance. Contributing to the accident were the dark night conditions, fog, and mountainous terrain.
- [NTSB CHI02LA232](https://openairdocs.org/ntsb/CHI02LA232.md): Bell 412 · Rantoul, IL · Accident · 1 fatal · Limited investigation · Final report · Aug 3, 2002 · N464AC · Minor damage
  > The congested takeoff and landing area and the low altitude flight maneuver performed by the pilot.
- [NTSB DEN01FA058](https://openairdocs.org/ntsb/DEN01FA058.md): Bell 412SP · Grand Junction, CO · Accident · 1 fatal · Field investigation · Final report · Feb 28, 2001 · N412SM · Destroyed
  > the pilot's failure to maintain rotor speed during an intentional autorotation, which resulted in a loss of control.
- [NTSB LAX00GA297](https://openairdocs.org/ntsb/LAX00GA297.md): Bell 412 · Cold Springs, NV · Accident · 1 fatal · Final report · Aug 13, 2000 · N174EH · Destroyed
  > failure of the compressor turbine disc due to cyclic fatigue brought about by repeated operation near or above the engines' temperature/power limits by company personnel over an extended period of time. Factors in the accident were: 1) the high density…
- [NTSB BFO94FA071](https://openairdocs.org/ntsb/BFO94FA071.md): Bell 412/SP · Bluefield, VA · Accident · 4 fatal · Field investigation · Final report · Apr 22, 1994 · N70AM · Destroyed
  > The pilot's failure to intercept the final approach course, and his improper execution of the instrument approach procedure. Factors which contributed to the accident were: the weather conditions, and the failure of the air traffic controller to adequately…
- [NTSB FTW91FA155](https://openairdocs.org/ntsb/FTW91FA155.md): Bell 412 · Garden Banks · Accident · 1 fatal · Field investigation · Final report · Aug 26, 1991 · N3909F · Substantial damage
  > Overheating and subsequent failure of the number one tail rotor hanger bearing for an undeterined reason, and failure of the tail rotor drive shaft.
- [NTSB DCA91MA031](https://openairdocs.org/ntsb/DCA91MA031.md): Bell 412SP · Merion, PA · Accident · 7 fatal · Class 1 · Major · Final report · Apr 4, 1991 · N78S · 2 aircraft · Destroyed
  > The poor judgement by the captain of the airplane to permit the in-flight inspection after he had determined to the best of his ability that the nose landing gear was fully extended, the poor judgment of the captain of the helicopter to conduct the…

## 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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1182202'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?fatal=1&model=1182202

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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.