# NTSB investigations, 2011: 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 ERA12MA005](https://openairdocs.org/ntsb/ERA12MA005.md): Bell 206B · New York, NY · Accident · 2 fatal · Major investigation · Final report · Oct 4, 2011 · N63Q · Substantial damage
  > The pilot's failure to anticipate and correct for conditions (high gross weight, low indicated airspeed, and a right downwind turn) conducive to loss of tail rotor effectiveness (LTE), which resulted in LTE and an uncontrolled spin. Contributing to the…
- [NTSB ERA11LA409](https://openairdocs.org/ntsb/ERA11LA409.md): Robinson Helicopter R22 Beta · Dayton, NJ · Accident · Serious injuries · Limited investigation · Final report · Jul 20, 2011 · N83509 · Substantial damage
  > The pilot's inadequate compensation for wind during an out-of-ground-effect hover, which resulted in a loss of control due to settling with power and loss of tail rotor effectiveness.
- [NTSB CEN11WA412](https://openairdocs.org/ntsb/CEN11WA412.md): McDonnell Douglas Helicopter 369E · Glastonbury, United Kingdom · Accident · Serious injuries · Foreign investigation · Jun 19, 2011 · G-KSWI · Substantial damage
  > On June 19, 2011, at 1420 universal coordinated time (UTC), a McDonnell Douglas Helicopter Company model 369E, United Kingdom registration G-KSWI, s/n 0204E, was substantially damaged during an emergency landing after experiencing a mechanical failure of the…
- [NTSB WPR11CA264](https://openairdocs.org/ntsb/WPR11CA264.md): Robinson Helicopter R22 Beta · Prescott, AZ · Accident · No injuries · Data collection · Final report · Jun 18, 2011 · N334DC · Substantial damage
  > The pilot's inadequate compensation for the wind conditions and failure to maintain directional control of the helicopter during taxi, resulting in a loss of tail rotor effectiveness and a subsequent hard landing.
- [NTSB ERA11TA318](https://openairdocs.org/ntsb/ERA11TA318.md): Bell OH-58A · Ft. Pierce, FL · Accident · Minor injuries · Final report · May 29, 2011 · N911SL · Substantial damage
  > The pilot's failure to recognize and avoid a loss of tail rotor effectiveness, which resulted in a loss of control and hard landing.
- [NTSB ERA11LA297](https://openairdocs.org/ntsb/ERA11LA297.md): Bell 206-L4 · Mobile Block 114CC · Accident · Serious injuries · Limited investigation · Final report · May 13, 2011 · N266P · Substantial damage
  > The pilot’s operation of the helicopter with a left, quartering headwind, resulting in conditions conducive to a loss of tail rotor effectiveness.
- [NTSB ERA11WA215](https://openairdocs.org/ntsb/ERA11WA215.md): Bell 205 · San Clemente, Chile · Accident · 1 fatal · Foreign investigation · Mar 24, 2011 · CC-CID · Destroyed

## 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") = 2011
  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=2011

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