# Fatal NTSB investigations: Pratt & Whitney PT6 series

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 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 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 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 DEN05FA103](https://openairdocs.org/ntsb/DEN05FA103.md): Agusta A119 · Mancos, CO · Accident · 3 fatal · Field investigation · Final report · Jun 30, 2005 · N403CF · Substantial damage
  > a loss of engine power for undetermined reasons and the pilot's inability to get into autorotation prior to impacting the ground. A factor contributing to the accident was the helicopter's low altitude when power was lost.
- [NTSB MIA00FA030](https://openairdocs.org/ntsb/MIA00FA030.md): Bell 212 · Philadelphia, MS · Accident · 2 fatal · Field investigation · Final report · Nov 27, 1999 · N8144M · Destroyed
  > The failure of the pilot and company maintenance personnel during preflight and periodic inspections to identify the signs of fretting and looseness in the "red" main rotor blade pitch change horn to main rotor blade grip attachment, resulting in the…

## 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."highestInjuryLevel" = 'Fatal'
  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&fatal=1

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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.