# NTSB investigations, CA: Settling with power/vortex ring state

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 GAA16CA143](https://openairdocs.org/ntsb/GAA16CA143.md): Bell 47 · Agua Dulce, CA · Accident · Minor injuries · Data collection · Final report · Mar 2, 2016 · N568TB · Substantial damage
  > The pilot's failure to set the appropriate collective friction prior to releasing the collective in flight, which resulted in decreased main rotor pitch, settling with power, and an impact with terrain.
- [NTSB WPR14FA324](https://openairdocs.org/ntsb/WPR14FA324.md): S.N.I.A.S. AS350B · Tahoma, CA · Accident · Serious injuries · Field investigation · Final report · Aug 1, 2014 · N3597T · Substantial damage
  > The pilot's loss of helicopter control due to settling with power while maneuvering for takeoff.
- [NTSB WPR11CA146](https://openairdocs.org/ntsb/WPR11CA146.md): Hiller UH-12E · Colusa, CA · Accident · No injuries · Data collection · Final report · Feb 26, 2011 · N236HA · Substantial damage
  > The pilot's failure to maintain an adequate airspeed and an inadvertent encounter with settling with power while flying downwind.

## 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" = '244' 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/244/sequence?state=CA

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