# NTSB investigations: Turbomeca ARRIEL-2B1: Loss of control in flight

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 WPR23LA200](https://openairdocs.org/ntsb/WPR23LA200.md): Eurocopter AS 350 B3 · San Diego, CA · Accident · No injuries · Class 4 · Limited · Final report · May 24, 2023 · N791AM · Substantial damage
  > The pilot’s failure to maintain altitude during a hover taxi due to distraction resulting from the unanticipated activation of strobing lights while using night vision googles.
- [NTSB ANC20LA028](https://openairdocs.org/ntsb/ANC20LA028.md): Eurocopter EC130 · Kalapana, HI · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 5, 2020 · N11QK · Substantial damage
  > A loss of control due to the fatigue fracture of a tail rotor fenestron blade due to the geometry of the water drain hole positioning on the rib.
- [NTSB WPR18MA087](https://openairdocs.org/ntsb/WPR18MA087.md): Eurocopter EC130 · Peach Springs, AZ · Accident · 5 fatal · Class 3 · Major · Final report · Feb 11, 2018 · N155GC · Destroyed
  > A loss of tail rotor effectiveness, the pilot’s subsequent loss of helicopter control, and collision with terrain during an approach to land in gusting, tailwind conditions in an area of potential downdrafts and turbulence.
- [NTSB WPR16LA019](https://openairdocs.org/ntsb/WPR16LA019.md): American Eurocopter AS350B3 · Folsom, CA · Accident · No injuries · Limited investigation · Final report · Oct 24, 2015 · N911WL · Substantial damage
  > The flight instructor's failure to perform simulated engine failure training in accordance with manufacturer guidance, including his improper recovery from the maneuver, which resulted in an overshoot of the intended landing zone when the engine did not…
- [NTSB CEN14IA329](https://openairdocs.org/ntsb/CEN14IA329.md): Eurocopter AS 350 B3 · Temple, TX · Incident · No injuries · Incident investigation · Final report · Jun 26, 2014 · N808LF · Minor damage
  > The pilot’s failure to reposition the yaw servo hydraulic switch to the “on” position during the pretakeoff hydraulic system check, which resulted in a complete lack of hydraulic boost to the tail rotor system and increased the load required to move the…
- [NTSB ANC13GA036](https://openairdocs.org/ntsb/ANC13GA036.md): Eurocopter AS350 · Talkeetna, AK · Accident · 3 fatal · Class 1 · Final report · Mar 31, 2013 · N911AA · Destroyed
  > The pilot's decision to continue flight under visual flight rules into deteriorating weather conditions, which resulted in the pilot's spatial disorientation and loss of control. Also causal was the Alaska Department of Public Safety's punitive culture and…

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('60056')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '240'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/240/cases?engine=60056

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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.