# NTSB investigations: Allison 250 SER 250HP, 2012

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 WPR12LA426](https://openairdocs.org/ntsb/WPR12LA426.md): Bell 206 - B · Mammoth Lakes, CA · Accident · No injuries · Limited investigation · Final report · Sep 19, 2012 · N222GR · Destroyed
  > The pilot’s inability to maintain sufficient main rotor rpm while maneuvering in high density altitude conditions, which resulted in a precautionary landing and subsequent rollover.
- [NTSB WPR12LA408](https://openairdocs.org/ntsb/WPR12LA408.md): Bell Helicopter Textron 206L-1 · Grand Canyon, AZ · Accident · No injuries · Limited investigation · Final report · Sep 9, 2012 · N5745Y · Substantial damage
  > A total loss of engine power during descent for reasons that could not be determined because postaccident engine examinations and testing revealed no evidence of an anomaly that would have precluded normal operation.
- [NTSB WPR12LA341](https://openairdocs.org/ntsb/WPR12LA341.md): Fairchild Hiller FH-1100 · Cody, WY · Accident · No injuries · Limited investigation · Final report · Jul 31, 2012 · N5038F · Substantial damage
  > The failure of a tail rotor driveshaft coupling due to fatigue.
- [NTSB WPR12CA236](https://openairdocs.org/ntsb/WPR12CA236.md): Bell 206B · Burbank, WA · Accident · No injuries · Data collection · Final report · May 30, 2012 · N106TV · Substantial damage
  > The failure of maintenance personnel to properly torque an air tube fitting, which resulted in a total loss of engine power.
- [NTSB CEN12LA258](https://openairdocs.org/ntsb/CEN12LA258.md): Bell 206B · Amarillo, TX · Accident · Minor injuries · Limited investigation · Final report · Apr 26, 2012 · N2068X · Substantial damage
  > The pilot's failure to maintain helicopter control during landing in gusty wind conditions associated with a thunderstorm, which resulted in a loss of tail rotor effectiveness.

## 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") = 2012
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03002', '03003'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03002&year=2012

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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.