# NTSB investigations: Allison 250-C30 series, 2006

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 DFW07LA011](https://openairdocs.org/ntsb/DFW07LA011.md): Sikorsky S-76A++ · Eugene Isl 259 · Accident · Minor injuries · Limited investigation · Final report · Oct 22, 2006 · N22342 · Destroyed
  > The flight crew's failure to maintain clearance with the water and their diverted attention to secondary tasks while preparing to land. Contributing factor were the low ceilings and the heavy rains restricting their visibility.
- [NTSB SEA06CA161](https://openairdocs.org/ntsb/SEA06CA161.md): Bell 206L-3 · Salt Lake City, UT · Accident · No injuries · Data collection · Final report · Aug 11, 2006 · N206UH · Substantial damage
  > The failure of the pilot to maintain clearance by allowing the helicopter to drift backwards, resulting in its tail rotor striking a hangar.
- [NTSB DEN06LA096](https://openairdocs.org/ntsb/DEN06LA096.md): Bell 206L-3 · Taos, NM · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 2006 · N44NM · Substantial damage
  > the loss of tail rotor effectiveness during landing, and the pilot's delayed remedial action to counteract a right yaw, which resulted in a loss of directional control and collision with terrain. A contributing factor was the pilot's failure to perform…
- [NTSB SEA06LA121](https://openairdocs.org/ntsb/SEA06LA121.md): Bell 206L · Vernal, UT · Accident · Minor injuries · Limited investigation · Final report · Jun 15, 2006 · N265SH · Substantial damage
  > The loss of tail rotor effectiveness during an attempted precationary landing after a takeoff over uneven, sloping, brush-covered terrain. Factors include the pilot using the wrong performance chart while completing his preflight performance calculations, the…
- [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.
- [NTSB ANC06LA066](https://openairdocs.org/ntsb/ANC06LA066.md): Bell 206L-1 · Juneau, AK · Accident · Minor injuries · Limited investigation · Final report · Jun 1, 2006 · N45RP · Substantial damage
  > The pilot's failure to maintain adequate altitude/clearance from terrain while maneuvering in adverse weather conditions. Factors associated with the accident are the pilot's decision to continue flight into adverse weather, fog, whiteout and flat light…
- [NTSB DFW06IA145](https://openairdocs.org/ntsb/DFW06IA145.md): Bell 206L-3 · Grand Isle 43AA · Incident · 1 fatal · Incident investigation · Final report · May 30, 2006 · N92MT · No damage
  > The pilot's incapacitation and death due to pre-existing cardiac disease.
- [NTSB DFW06FA083](https://openairdocs.org/ntsb/DFW06FA083.md): Bell 206L-1 · Patterson, LA · Accident · 2 fatal · Field investigation · Final report · Mar 14, 2006 · N370RL · Destroyed
  > The improper installation of an engine fuel line fitting by other maintenance personnel, which resulted in a loose fitting and a loss of engine power during cruise flight. Factors associated with the accident are a tailwind, and the lack of a suitable site…
- [NTSB LAX06LA098](https://openairdocs.org/ntsb/LAX06LA098.md): Eurocopter AS350D · Kahului, HI · Accident · No injuries · Limited investigation · Final report · Jan 29, 2006 · N90Q · Substantial damage
  > A total loss of engine power due to the internal effects on the bearings consistent with an operating event of insufficient oil supply. Contributing to the accident was the pilot’s improper flare during the autorotative descent.
- [NTSB DFW06CA058](https://openairdocs.org/ntsb/DFW06CA058.md): Bell 206L-4 · Fort Worth, TX · Accident · No injuries · Data collection · Final report · Jan 25, 2006 · N225GH · Substantial damage
  > The flight instructors failure to maintain main rotor RPM and improper flare, which resulted in a hard landing.

## 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") = 2006
  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&year=2006

---
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.