# NTSB investigations: Allison 250-C30 series: In flight encounter with weather

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 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 FTW04FA007](https://openairdocs.org/ntsb/FTW04FA007.md): Bell 206L-3 · W. Cameron 509 · Accident · 3 fatal · Field investigation · Final report · Oct 10, 2003 · N81671 · Destroyed
  > The pilot's loss of control following an inadvertent encounter with adverse weather conditions. Contributing factors were the prevailing thunderstorms, the low ceilings, and the miscommunication between the pilot and the company's communication center in…
- [NTSB FTW01LA004](https://openairdocs.org/ntsb/FTW01LA004.md): Bell 206-L1 · Jasper, TX · Accident · Serious injuries · Limited investigation · Final report · Oct 2, 2000 · N321CA · Substantial damage
  > The pilot's inadvertent VFR flight into instrument meteorological conditions, which resulted in his failure to maintain control of the helicopter. Factors were the fog and the pilot's lack of instrument flight experience.
- [NTSB FTW97LA217](https://openairdocs.org/ntsb/FTW97LA217.md): Bell 206L-3 · Weston, CO · Accident · No injuries · Limited investigation · Final report · Jun 12, 1997 · N207DS · Substantial damage
  > the pilot's improper in-flight planning/decision and failure to maintain adequate altitude and/or clearance from rising mountainous/hilly terrain. The unfavorable wind condition and low airspeed were related factors.
- [NTSB BFO94FA135](https://openairdocs.org/ntsb/BFO94FA135.md): Bell 206L-4 · Whiting, NJ · Accident · 3 fatal · Field investigation · Final report · Aug 13, 1994 · N124NH · Destroyed
  > The pilot's improper in-flight planning/decision, flight into instrument meteorological conditions (IMC), and subsequent spatial disorientation, which resulted in loss of aircraft control. Factors related to the accident were: darkness, the adverse weather…
- [NTSB FTW85LA119](https://openairdocs.org/ntsb/FTW85LA119.md): Sikorsky S-76A · Houma, LA · Accident · Minor injuries · Limited investigation · Final report · Feb 19, 1985 · N31223 · Destroyed
  > The aircrew had just completed a medivac flt & were repositioning the helicopter to the home base. While they were en route, the company dispatcher informed the crew that fog was moving into the area & that they had better hurry. During the night apch, 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03015')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 240))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03015&occurrence=240

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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.