# NTSB investigations: Pratt & Whitney Canada PT6T-3

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 GAA20CA063](https://openairdocs.org/ntsb/GAA20CA063.md): Sikorsky S 58JT · Lebanon, IN · Accident · Minor injuries · Data collection · Final report · Nov 10, 2019 · N827MW · Substantial damage
  > The pilot's failure to maintain proper clearance from a tractor trailer during landing.
- [NTSB NYC08LA129](https://openairdocs.org/ntsb/NYC08LA129.md): Sikorsky S-58HT · Belmont, WV · Accident · Serious injuries · Limited investigation · Final report · Mar 9, 2008 · N1078T · Substantial damage
  > The fatigue failure of a tail rotor blade during an external load lift.
- [NTSB DEN00LA045](https://openairdocs.org/ntsb/DEN00LA045.md): Bell 212 · Mt Pleasant, UT · Accident · Serious injuries · Limited investigation · Final report · Jan 29, 2000 · N212HQ · Substantial damage
  > Failure of the main rotor mast due to fatigue that resulted from inadequate quality assurance during the manufacturing process.
- [NTSB FTW99LA162](https://openairdocs.org/ntsb/FTW99LA162.md): Bell 412 · Eugene Is. 313 · Accident · No injuries · Limited investigation · Final report · Jun 9, 1999 · N3893S · Substantial damage
  > The separation of a section of the tail rotor blade, and subsequent separation of the tail rotor system, as a result of fatigue cracking due to corrosion in the tail rotor blade spar.
- [NTSB SEA99LA141](https://openairdocs.org/ntsb/SEA99LA141.md): Bell 212 · Snoqualmie, WA · Accident · No injuries · Limited investigation · Final report · Apr 26, 1999 · N98W · Substantial damage
  > Clearance from an object was not maintained. A tree was a factor.
- [NTSB FTW91FA155](https://openairdocs.org/ntsb/FTW91FA155.md): Bell 412 · Garden Banks · Accident · 1 fatal · Field investigation · Final report · Aug 26, 1991 · N3909F · Substantial damage
  > Overheating and subsequent failure of the number one tail rotor hanger bearing for an undeterined reason, and failure of the tail rotor drive shaft.
- [NTSB DEN77FA005](https://openairdocs.org/ntsb/DEN77FA005.md): Bell B-212 · Casper, WY · Accident · Serious injuries · Closed · Oct 17, 1976 · N398EH · Substantial damage

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52102'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52102

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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.