# NTSB investigations: Allison 250-C20 series, LA

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 CEN13FA009](https://openairdocs.org/ntsb/CEN13FA009.md): Bell 206B · Crowley, LA · Accident · 1 fatal · Field investigation · Final report · Oct 10, 2012 · N333DR · Substantial damage
  > The pilot’s failure to maintain clearance from the broadcast tower guy-wires.
- [NTSB CEN11CA303](https://openairdocs.org/ntsb/CEN11CA303.md): Bell 206 · Venice, LA · Accident · Minor injuries · Data collection · Final report · Apr 13, 2011 · N887T · Substantial damage
  > The pilot's improper use of the collective and cyclic control during taxi operations, which induced a dynamic rollover.
- [NTSB CEN09LA571](https://openairdocs.org/ntsb/CEN09LA571.md): Messerschmitt-Boelkow-Blohm BO-105S · Thibodaux, LA · Accident · Minor injuries · Limited investigation · Final report · Sep 6, 2009 · N131EH · Substantial damage
  > The pilot's inability to maintain control due to the mechanic's inadvertent switching of two cyclic control tubes of different lengths during maintenance.
- [NTSB DFW05LA239](https://openairdocs.org/ntsb/DFW05LA239.md): Bell 206B · New Orleans, LA · Accident · Minor injuries · Limited investigation · Final report · Sep 7, 2005 · N230CA · Substantial damage
  > The pilot's failure to maintain directional control after encountering a loss of tail rotor effectiveness. A contributing factor was the lack of suitable terrain.
- [NTSB DFW05LA252](https://openairdocs.org/ntsb/DFW05LA252.md): Bell 206B · Myrtle Grove, LA · Accident · Minor injuries · Limited investigation · Final report · Sep 1, 2005 · N59539 · Substantial damage
  > The pilot's loss of control in flight for undetermined reasons.
- [NTSB DFW05FA032](https://openairdocs.org/ntsb/DFW05FA032.md): Hughes 369D · Zachary, LA · Accident · Serious injuries · Field investigation · Final report · Dec 9, 2004 · N7148Z · Substantial damage
  > The loss of engine power as a result of fatigue cracking of the compressor adaptor coupling initiated by fretting on the pilot diameter and subsequent disconnection of the compressor from the turbine assembly. A contributing factor was the low operating…
- [NTSB FTW03LA216](https://openairdocs.org/ntsb/FTW03LA216.md): Bell 206B-3 · Kisatchie, LA · Accident · No injuries · Limited investigation · Final report · Sep 9, 2003 · N197AA · Substantial damage
  > A loss of engine power due to water contamination in the fuel system.
- [NTSB FTW00LA181](https://openairdocs.org/ntsb/FTW00LA181.md): Bell 206B · Deville, LA · Accident · Minor injuries · Limited investigation · Final report · Jun 19, 2000 · N2277T · Substantial damage
  > the pilot's failure to maintain clearance with the external load that was setting on the ground while hovering. A contributing factor was the pilot's diverted attention.
- [NTSB FTW97LA252](https://openairdocs.org/ntsb/FTW97LA252.md): Bell 206B · New Iberia, LA · Accident · Serious injuries · Limited investigation · Final report · Jul 3, 1997 · N49661 · Substantial damage
  > the pilot's improper in-flight planning/decision. A related factor was his failure to follow the company procedure of maintaining visual contact with the external long-line cable, while hovering with it attached.
- [NTSB FTW97FA121](https://openairdocs.org/ntsb/FTW97FA121.md): MBB BO-105S · Lena, LA · Accident · 1 fatal · Field investigation · Final report · Mar 14, 1997 · N7161J · Destroyed
  > The pilot's continued VFR flight into instrument meteorological conditions, and his subsequent loss of aircraft control due to spatial disorientation. Factors were the pilot not following company procedures and directives, the low ceiling, and the dark night…
- [NTSB FTW97LA030](https://openairdocs.org/ntsb/FTW97LA030.md): Bell 206B-3 · Creole, LA · Accident · No injuries · Limited investigation · Final report · Oct 31, 1996 · N2043B · Substantial damage
  > the pilot's inadequate preflight by failing to remove the 100 foot long line and the external cargo basket from the helicopter before takeoff, and/or his failure to ensure that clearance/altitude was maintained from the fence.
- [NTSB FTW96LA147](https://openairdocs.org/ntsb/FTW96LA147.md): Bell 206BIII · Houma, LA · Accident · Minor injuries · Limited investigation · Final report · Mar 12, 1996 · N115FH · Substantial damage
  > the pilot's attempted maneuver which exceeded the dynamic capability of the helicopter.
- [NTSB FTW95IA397](https://openairdocs.org/ntsb/FTW95IA397.md): MBB BO-105C · Lafayette, LA · Incident · No injuries · Incident investigation · Final report · Sep 18, 1995 · N91070 · No damage
  > a short in the 'jam proof system' solenoid valve which prevented activation of the backup hydraulic system and resulting in a cyclic hardover. Factors were the contaminated hydraulic fluid and the resulting jammed actuator (longitudinal control slider).
- [NTSB FTW80FA081](https://openairdocs.org/ntsb/FTW80FA081.md): Bell 206B · Intercstl City, LA · Accident · No injuries · Closed · Jun 1, 1980 · N59541 · Substantial damage
- [NTSB FTW80FRD08](https://openairdocs.org/ntsb/FTW80FRD08.md): Hughes 369D · Abbeville, LA · Accident · No injuries · Closed · Oct 11, 1979 · N58240 · 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" = 'LA' 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=LA

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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.