# NTSB investigations, 2015: Loss of tail rotor effectiveness

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 CEN16LA047](https://openairdocs.org/ntsb/CEN16LA047.md): Eurocopter EC120B · Goshen, IN · Accident · No injuries · Limited investigation · Final report · Nov 16, 2015 · N88HA · Substantial damage
  > The failure of the Thomas coupling at the interface with the main gear box tail rotor output shaft, which resulted in the helicopter's loss of tail rotor control.
- [NTSB ERA15LA376](https://openairdocs.org/ntsb/ERA15LA376.md): Hughes 269 · Eustis, FL · Accident · Serious injuries · Limited investigation · Final report · Sep 25, 2015 · N9567F · Substantial damage
  > The pilot's failure to maintain yaw control as he slowed the helicopter during a landing approach, which resulted in a loss of helicopter control due to a loss of tail rotor effectiveness.
- [NTSB CEN15WA435](https://openairdocs.org/ntsb/CEN15WA435.md): Bell 206B · Sept-Iles, Canada · Accident · No injuries · Foreign investigation · Sep 2, 2015 · C-GYBK · Substantial damage
  > On September 2, 2015, about 1345 Universal Coordinated Time (UTC), a Bell 206B, Canada Registry C-GYBK, impacted terrain about 19 miles north of Sept-iles, Quebec. Of the five occupants that were on board, the pilot sustained minor injuries, two passengers…
- [NTSB CEN15LA375](https://openairdocs.org/ntsb/CEN15LA375.md): Robinson Helicopter R44 II · Carlos, TX · Accident · Serious injuries · Limited investigation · Final report · Aug 22, 2015 · N445HS · Substantial damage
  > The pilot’s improper decision to turn the helicopter toward a tailwind during an out-of-ground-effect hover, which resulted in a loss of tail rotor effectiveness. Contributing to the accident was the accident and lead pilots’ inadequate preflight risk…
- [NTSB GAA15CA102](https://openairdocs.org/ntsb/GAA15CA102.md): Bell 206 - B11 · Caledonia, MI · Accident · No injuries · Data collection · Final report · May 29, 2015 · N206ED · Substantial damage
  > A loss of tail rotor effectiveness while maneuvering at low altitude, resulting in a collision with trees.
- [NTSB CEN15LA185](https://openairdocs.org/ntsb/CEN15LA185.md): Giackino Donald W Rotorway 162F · Marquette, MI · Accident · No injuries · Limited investigation · Final report · Mar 28, 2015 · N556DG · Substantial damage
  > The loss of helicopter control for reasons that could not be determined based on the available evidence.
- [NTSB ERA15CA089](https://openairdocs.org/ntsb/ERA15CA089.md): Robinson Helicopter R44 II · Barranquitas, PR · Accident · Minor injuries · Data collection · Final report · Jan 2, 2015 · N3183T · Substantial damage
  > The pilot's failure to maintain control of the helicopter while landing which resulted in a tailrotor ground strike and collision with terrain.

## 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") = 2015
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '242' 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/242/sequence?year=2015

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