# NTSB investigations: Allison 250-C30 series, 1984

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 DEN85LA053](https://openairdocs.org/ntsb/DEN85LA053.md): Bell 206-L3 · Jackson, WY · Accident · Minor injuries · Limited investigation · Final report · Dec 31, 1984 · N3898Y · Substantial damage
  > Plt had landed on prepared area (snow packed down by heli ski guide) to embark ski passengers. On departure plt lifted to hover, turned to desired hdg and initiated forward transition. As acft passed boundry of packed snow, rotor wash picked up soft loose…
- [NTSB DEN84LA093](https://openairdocs.org/ntsb/DEN84LA093.md): Bell 206L-3 · Lake City, CO · Accident · Minor injuries · Limited investigation · Final report · Feb 18, 1984 · N3893U · Substantial damage
  > The helicopter took off in marginal VMC conditions at close to conditions requiring maximum performance for takeoff. The plt attempted to hover at 90 percent RPM waiting he said 'for a breeze'. The hover stirred up snow causing a whiteout and loss of visual…

## 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") = 1984
  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=1984

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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.