# NTSB investigations: Allison 250-C20 series, 2014

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 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 CEN15CA007](https://openairdocs.org/ntsb/CEN15CA007.md): Bell 206B · Atlanta, AR · Accident · Serious injuries · Data collection · Final report · Oct 3, 2014 · N4426M · Substantial damage
  > The pilot's inadequate preflight inspection when he did not remove a tie-down strap prior to takeoff, which resulted in a dynamic rollover.
- [NTSB CEN14CA525](https://openairdocs.org/ntsb/CEN14CA525.md): Bell 206B · Nashoba, OK · Accident · No injuries · Data collection · Final report · Sep 25, 2014 · N152CA · Substantial damage
  > The pilot's loss of directional control due a loss of tail rotor effectiveness.
- [NTSB WPR14CA363](https://openairdocs.org/ntsb/WPR14CA363.md): Hughes 369D · Willows, CA · Accident · Serious injuries · Data collection · Final report · Sep 2, 2014 · N516PJ · Substantial damage
  > The pilot's failure to adequately secure cargo (a jacket), which resulted in the jacket exiting the cabin compartment and colliding with the tail rotor during cruise flight.
- [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 WPR14LA308](https://openairdocs.org/ntsb/WPR14LA308.md): Mdhi 369D · Oso, WA · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 2014 · N5225C · Substantial damage
  > The pilot/mechanic’s failure to properly perform required inspections of the main rotor blades at the necessary intervals, which resulted in an in-flight separation of a main rotor blade due to disbonding and fatigue cracking. Contributing to the accident was…
- [NTSB CEN14LA296](https://openairdocs.org/ntsb/CEN14LA296.md): Bell 206B · Decatur, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 17, 2014 · N536T · Substantial damage
  > The flight instructor’s improper recovery from a practice autorotation, which resulted in a hard landing.
- [NTSB CEN14IA270](https://openairdocs.org/ntsb/CEN14IA270.md): Bell 407 · Eugene Island 182A · Incident · No injuries · Incident investigation · Final report · May 30, 2014 · N1197 · No damage
  > The improper repair of the outer combustion case, which led to its ultimate failure due to the continued progression of a fatigue crack and resulted in a partial loss of engine power during takeoff.
- [NTSB WPR14LA159](https://openairdocs.org/ntsb/WPR14LA159.md): Bell 206B III · Missoula, MT · Accident · Minor injuries · Limited investigation · Final report · Apr 4, 2014 · N43MA · Substantial damage
  > A dynamic rollover during attempted liftoff.
- [NTSB WPR14LA113](https://openairdocs.org/ntsb/WPR14LA113.md): Bell 206 · Bountiful, UT · Accident · No injuries · Limited investigation · Final report · Feb 5, 2014 · N3211N · Substantial damage
  > The pilots' inaccurate assessment of the snow depth on the landing zone, which resulted in a landing on snow deeper than that for which the helicopter was equipped and led to dynamic rollover.

## 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") = 2014
  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&year=2014

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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.