# NTSB investigations: Bell Helicopter Textron Canada 407: 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 ERA24FA003](https://openairdocs.org/ntsb/ERA24FA003.md): Bell Helicopter Textron Canada 407 · Croydon, NH · Accident · 1 fatal · Class 3 · Field · Final report · Oct 8, 2023 · N802JR · Substantial damage
  > The pilot’s loss of control during the initial climb in dark night conditions due to spatial disorientation, which resulted in a steep banking descent into trees and terrain. Contributing to the accident was the pilot’s lack of recent night flight experience,…
- [NTSB ERA22FA257](https://openairdocs.org/ntsb/ERA22FA257.md): Bell Helicopter Textron Canada 407 · Fairfield, NJ · Accident · Serious injuries · Class 3 · Field · Final report · Jun 4, 2022 · N98ZA · Substantial damage
  > The failure of maintenance personnel to properly secure the tail rotor crosshead drive plate and the failure of maintenance personnel, the maintenance pilot, and the accident pilot to detect the error, which led to the helicopter’s loss of tail rotor…
- [NTSB ERA16FA248](https://openairdocs.org/ntsb/ERA16FA248.md): Bell Helicopter Textron Canada 407 · Hickory, KY · Accident · 1 fatal · Field investigation · Final report · Jul 11, 2016 · N427TV · Substantial damage
  > Company maintenance personnel's inappropriate removal without replacement of the safety wires on the collective lever pin screws during a recent maintenance inspection, which resulted in the screws backing out and led to a loss of collective control in flight.
- [NTSB CEN13FA122](https://openairdocs.org/ntsb/CEN13FA122.md): Bell Helicopter 407 · Clear Lake, IA · Accident · 3 fatal · Field investigation · Final report · Jan 3, 2013 · N445MT · Destroyed
  > The pilot’s inadvertent encounter with localized icing conditions and his subsequent in-flight loss of helicopter control.
- [NTSB WPR12GA106](https://openairdocs.org/ntsb/WPR12GA106.md): Bell 407 · Moran Junction, WY · Accident · 1 fatal · Final report · Feb 15, 2012 · N407HL · Substantial damage
  > The pilot’s failure to maintain yaw control while hovering at high density altitude, which resulted in a loss of tail rotor effectiveness.

## 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.aircraft_model_code IN ('1182154')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '240' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/240/sequence?model=1182154

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