# NTSB investigations: Pratt & Whitney PT6 series, CA

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 WPR23LA338](https://openairdocs.org/ntsb/WPR23LA338.md): Bell 212 · Balch Camp, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 10, 2023 · N873HL · Destroyed
  > The pilot’s inadequate performance planning for the operation that resulted in an excessive gross weight for the operating conditions, leading to a loss of altitude during maneuvering and contact with trees. Contributing to the accident was the pilot’s…
- [NTSB WPR21LA268](https://openairdocs.org/ntsb/WPR21LA268.md): Bell 212HP · Weed, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 7, 2021 · N911KW · Substantial damage
  > The pilot’s failure to maintain altitude during an approach to a lake. Contributing to the accident was the pilot’s failure to release the full water bucket as the helicopter was settling, which reduced the helicopter’s out-of-ground-effect performance.
- [NTSB DCA20MA059](https://openairdocs.org/ntsb/DCA20MA059.md): Sikorsky S76 · Calabasas, CA · Accident · 9 fatal · Class 1 · Major · Final report · Jan 26, 2020 · N72EX · Destroyed
  > The pilot’s decision to continue flight under visual flight rules into instrument meteorological conditions, which resulted in the pilot’s spatial disorientation and loss of control. Contributing to the accident was the pilot’s likely self-induced pressure…
- [NTSB WPR11FA163](https://openairdocs.org/ntsb/WPR11FA163.md): Sikorsky S-58ET · El Segundo, CA · Accident · Serious injuries · Field investigation · Final report · Mar 13, 2011 · N33602 · Substantial damage
  > A partial loss of engine power and the failure of the external hook to release the load for undetermined reasons.
- [NTSB WPR10FA029](https://openairdocs.org/ntsb/WPR10FA029.md): Agusta A119 · Blythe, CA · Accident · No injuries · Field investigation · Final report · Oct 23, 2009 · N119AH · Substantial damage
  > The loss of engine power during cruise flight for undetermined reasons.
- [NTSB WPR09TA356](https://openairdocs.org/ntsb/WPR09TA356.md): Bell 212 · Willow Creek, CA · Accident · 1 fatal · Final report · Jul 21, 2009 · N212HP · No damage
  > The rappeller's failure to properly latch the rappelling harness to the rappelling assembly before exiting the helicopter.
- [NTSB LAX08LA200](https://openairdocs.org/ntsb/LAX08LA200.md): Sikorsky S-76A · Santa Maria, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 27, 2008 · N343AA · Substantial damage
  > The copilot's misjudged clearance from an object during a hovering turn for landing. Contributing to the accident were the inadequately marked heliport surface and the close proximity of an obstruction near the landing area.
- [NTSB LAX07FA056](https://openairdocs.org/ntsb/LAX07FA056.md): Bell 412SP · Hesperia, CA · Accident · 3 fatal · Field investigation · Final report · Dec 11, 2006 · N410MA · Destroyed
  > The pilot's inadvertent encounter with instrument meteorological conditions and subsequent failure to maintain terrain clearance. Contributing to the accident were the dark night conditions, fog, and mountainous terrain.
- [NTSB LAX06TA284](https://openairdocs.org/ntsb/LAX06TA284.md): Bell 212 · Happy Camp, CA · Accident · No injuries · Final report · Sep 4, 2006 · N873HL · Substantial damage
  > Failure of compressor second stage stator vane for undetermined reasons while maneuvering.

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52033'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52033&state=CA

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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.