# NTSB investigations, 2021: 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 CEN22FA086](https://openairdocs.org/ntsb/CEN22FA086.md): Bell 206B · Livingston, TX · Accident · 2 fatal · Class 3 · Field · Final report · Dec 30, 2021 · N8AU · Substantial damage
  > The pilot exceeding the yaw control capability of the helicopter for the flight conditions, resulting in a non-mechanical loss of tail rotor effectiveness.
- [NTSB CEN22LA009](https://openairdocs.org/ntsb/CEN22LA009.md): Bell 206 · Gonzales, LA · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 6, 2021 · N373SP · Substantial damage
  > The student pilot’s failure to compensate for an unanticipated right yaw, which resulted in a loss of tail rotor effectiveness and helicopter control.
- [NTSB ERA21LA357](https://openairdocs.org/ntsb/ERA21LA357.md): Enstrom F28 · Toughkenamon, PA · Accident · No injuries · Class 4 · Limited · Final report · Sep 8, 2021 · N51789 · Substantial damage
  > The pilot’s failure to maintain control of the helicopter during an out-of-ground effect hover in a gusty wind, due to loss of tail rotor effectiveness.
- [NTSB CEN21LA389](https://openairdocs.org/ntsb/CEN21LA389.md): Robinson Helicopter R22 Beta · Arnaudville, LA · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 27, 2021 · N827SH · Substantial damage
  > The loss of tail rotor drive due to a fatigue failure of the tail rotor gearbox output shaft, which resulted in a loss of control during landing.
- [NTSB GAA21WA247](https://openairdocs.org/ntsb/GAA21WA247.md): Enstrom 280FX · Llanfachreth, United Kingdom · Accident · No injuries · Class 4 · Foreign · Aug 25, 2021 · G-OJBB · Substantial damage
- [NTSB CEN21LA253](https://openairdocs.org/ntsb/CEN21LA253.md): Schweizer TH55A/269A · Monroe, LA · Accident · No injuries · Class 4 · Limited · Final report · Jun 3, 2021 · N41G · Substantial damage
  > The pilot’s failure to maintain yaw control during landing which resulted in a loss of tail rotor effectiveness.
- [NTSB CEN21LA153](https://openairdocs.org/ntsb/CEN21LA153.md): Eurocopter EC130 · Tulsa, OK · Accident · No injuries · Class 4 · Limited · Final report · Feb 25, 2021 · N259AM · Substantial damage
  > The pilot’s improper decision to approach the airport and enter a low altitude hover with a gusting quartering tailwind, which resulted in a loss of tail rotor effectiveness during a turn at a low altitude.
- [NTSB WPR21LA093](https://openairdocs.org/ntsb/WPR21LA093.md): Mcdonnell Douglas Helicopter 369E · Queen Creek, AZ · Accident · No injuries · Class 4 · Limited · Final report · Jan 22, 2021 · N90TG · Substantial damage
  > The pilot's uncoordinated flight control inputs while entering a hover, which lead to a loss of aircraft control which resulted in the left skid making contact with the ground, causing the helicopter to roll on its side.

## 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") = 2021
  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=2021

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