# NTSB investigations, CA: 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 WPR22FA101](https://openairdocs.org/ntsb/WPR22FA101.md): Mcdonnell Douglas 500N · Newport Beach, CA · Accident · 1 fatal · Class 3 · Field · Final report · Feb 20, 2022 · N521HB · Substantial damage
  > The helicopter’s encounter with unanticipated right yaw during a low-altitude, low-airspeed, tight-radius orbit. Contributing to the accident was the pilot’s distraction during the orbit, which resulted in the loss of control, his fatigue due to his early…
- [NTSB GAA18CA117](https://openairdocs.org/ntsb/GAA18CA117.md): Hughes Helicopters 369 · Wrightwood, CA · Accident · No injuries · Data collection · Final report · Feb 1, 2018 · N618SG · Substantial damage
  > The pilot’s high altitude, high gross weight landing with insufficient tail rotor thrust resulting in a loss of tail rotor effectiveness.
- [NTSB WPR10CA364](https://openairdocs.org/ntsb/WPR10CA364.md): Bell 206 B II · Big Bear City, CA · Accident · No injuries · Data collection · Final report · Jul 24, 2010 · N788BD · Substantial damage
  > The pilot's failure to maintain directional control during the landing approach.
- [NTSB WPR09LA144](https://openairdocs.org/ntsb/WPR09LA144.md): MD Helicopter 369D · Trona, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 7, 2009 · N501EF · Substantial damage
  > The pilot's failure to maintain control while landing in a high density altitude environment due to 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."eventStateOrRegion" = 'CA' AND c."eventCountry" = 'USA'
  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?state=CA

---
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.