# NTSB investigations: Allison 250-C20 series, AL

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 ERA21LA269](https://openairdocs.org/ntsb/ERA21LA269.md): Garlick Helicopters OH-58A+ · Alpine, AL · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 25, 2021 · N372NS · Substantial damage
  > The pilot’s failure to maintain clearance from powerlines during a low-level aerial application flight, resulting in main rotor blade impact with a fiber-optic cable, a loss of control, and the helicopter’s subsequent impact with terrain.
- [NTSB ERA16LA015](https://openairdocs.org/ntsb/ERA16LA015.md): Bell 206L 3 · Dickinson, AL · Accident · No injuries · Limited investigation · Final report · Oct 15, 2015 · N206CJ · Substantial damage
  > The improper installation by company maintenance personnel of the securing hardware of a tail rotor driveshaft section, which resulted in that section of tail rotor driveshaft disconnecting and a complete loss of tail rotor thrust.
- [NTSB ERA15CA055](https://openairdocs.org/ntsb/ERA15CA055.md): Mcdonnell Douglas Helicopter MD500 · Decatur, AL · Accident · No injuries · Data collection · Final report · Nov 18, 2014 · N8371F · Substantial damage
  > An undetermined pilot's failure to maintain clearance from an electrical transmission tower resulting in substantial damage to a main rotor blade. Postaccident investigation could not determine which of two pilots was flying the helicopter at the time the…
- [NTSB ERA15CA018](https://openairdocs.org/ntsb/ERA15CA018.md): Bell 206B · Prattville, AL · Accident · No injuries · Data collection · Final report · Oct 16, 2014 · N59541 · Substantial damage
  > The pilot's improper fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.
- [NTSB ERA14FA396](https://openairdocs.org/ntsb/ERA14FA396.md): Mcdonnell Douglas Helicopter 369E · Northport, AL · Accident · 2 fatal · Field investigation · Final report · Aug 19, 2014 · N444RS · Substantial damage
  > An inadvertent collision with a utility wire for reasons that could not be determined from recorded data and examination of the helicopter and accident site.
- [NTSB NYC08CA309](https://openairdocs.org/ntsb/NYC08CA309.md): Bell 206B · Eutaw, AL · Accident · No injuries · Data collection · Final report · Sep 9, 2008 · N206WA · Substantial damage
  > The pilot's inadequate preflight inspection.
- [NTSB MIA07FA098](https://openairdocs.org/ntsb/MIA07FA098.md): Hughes 369A · Moulton, AL · Accident · 1 fatal · Field investigation · Final report · May 13, 2007 · N468WE · Destroyed
  > The separation of a main rotor blade from its tension torsion bar for an undetermined reason.
- [NTSB ATL89FA051](https://openairdocs.org/ntsb/ATL89FA051.md): Bell 206B · Pinson, AL · Accident · No injuries · Field investigation · Final report · Dec 2, 1988 · N3TV · Substantial damage
  > Two FAA inspectors were conducting currency training when the helicopter landed hard during a practice power recovery autorotation. The pilot had delayed in applying power and collective pitch. Upon contact with the ground, all engine instruments indicated…

## 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" = 'AL' 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=AL

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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.