# NTSB investigations: Allison 250-C20 series, GA

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 ERA09LA460](https://openairdocs.org/ntsb/ERA09LA460.md): Mcdonnell Douglas Helicopter 369E · Acworth, GA · Accident · Serious injuries · Limited investigation · Final report · Aug 12, 2009 · N527BB · Substantial damage
  > The loss of engine power due to the fatigue failure of the third-stage turbine wheel airfoil.
- [NTSB ATL07GA087](https://openairdocs.org/ntsb/ATL07GA087.md): Bell 206B · Cedartown, GA · Accident · Serious injuries · Final report · Jun 5, 2007 · N912SP · Substantial damage
  > The pilot's failure to maintain control of the helicopter while maneuvering. Contributing to the accident were strong gusty winds.
- [NTSB ATL04LA181](https://openairdocs.org/ntsb/ATL04LA181.md): Hughes HU-369-D · Waynesboro, GA · Accident · Minor injuries · Limited investigation · Final report · Sep 10, 2004 · N5211R · Substantial damage
  > The tail rotor assembly failed due to a fatigue fracture of the input gearshaft in the tail rotor gearbox assembly, which resulted in a loss of tail rotor control and subsequent collision with trees.
- [NTSB ATL03LA095](https://openairdocs.org/ntsb/ATL03LA095.md): Aerospatiale AS355F2 · Bainbridge, GA · Accident · No injuries · Limited investigation · Final report · May 17, 2003 · N42AT · Substantial damage
  > The pilot's improper flare during an attempted landing.
- [NTSB MIA75DKG90](https://openairdocs.org/ntsb/MIA75DKG90.md): Bell 206A · Blairsville, GA · Accident · No injuries · Closed · Jun 25, 1974 · N7881S · Substantial damage

## 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."eventStateOrRegion" = 'GA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03020&state=GA

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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.