# Final NTSB investigations: Pratt & Whitney Canada PT6A-135A

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 CEN26LA116](https://openairdocs.org/ntsb/CEN26LA116.md): Beech C90 · Guymon, OK · Accident · No injuries · Class 4 · Limited · Final report · Feb 14, 2026 · N247MD · Substantial damage
  > The collision with a white-tailed deer during the takeoff in night visual conditions.
- [NTSB CEN21FA238](https://openairdocs.org/ntsb/CEN21FA238.md): Lancair Evolution · McDermott, OH · Accident · 2 fatal · Class 3 · Field · Final report · May 28, 2021 · N515DL · Destroyed
  > The pilot’s failure to recognize and avoid airframe icing conditions, which resulted in a loss of airplane performance and a subsequent loss of control and in-flight break-up.
- [NTSB WPR21LA142](https://openairdocs.org/ntsb/WPR21LA142.md): Davis Dan B Lancair Evolution · Phoenix, AZ · Accident · No injuries · Class 3 · Limited · Final report · Mar 18, 2021 · N469KS · Substantial damage
  > A malfunction of the main cabin door latching mechanism for reasons that could not be determined based on the available information.
- [NTSB WPR17FA155](https://openairdocs.org/ntsb/WPR17FA155.md): Evolution 19 Lancair Evolution · Mesa, AZ · Accident · 2 fatal · Field investigation · Final report · Jul 17, 2017 · N571JM · Substantial damage
  > The pilot's failure to maintain adequate airspeed while maneuvering for landing, which resulted in an exceedance of the airplane's critical angle of attack and a subsequent stall/spin. Contributing to the accident was the pilot's distraction due to a failure…
- [NTSB WPR17LA104](https://openairdocs.org/ntsb/WPR17LA104.md): Evolution Air Lancair Evolution · Firebaugh, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 15, 2017 · N846PM · Substantial damage
  > A failure in the windshield, frame, or windshield-to-frame bond, which resulted in a rapid decompression during cruise flight.
- [NTSB WPR15LA242](https://openairdocs.org/ntsb/WPR15LA242.md): Bartels Lancair · Pacific Ocean (Pacific Ocean) · Accident · 1 fatal · Limited investigation · Final report · Aug 14, 2015 · N427LE · Destroyed
  > The pilot's incapacitation for reasons that could not be determined because the airplane was not recovered from the ocean.
- [NTSB WPR15IA105](https://openairdocs.org/ntsb/WPR15IA105.md): Evo13 Lancair Evolution · San Carlos, CA · Incident · No injuries · Incident investigation · Final report · Feb 15, 2015 · N3WB · Minor damage
  > The collapse of the nose landing gear (NLG) due to the separation of the right trunnion pin from the NLG strut as a result of reverse-bending fatigue.
- [NTSB WPR13LA416](https://openairdocs.org/ntsb/WPR13LA416.md): Beech C90 - A · Idaho Falls, ID · Accident · Serious injuries · Limited investigation · Final report · Sep 19, 2013 · N191TP · Substantial damage
  > The pilot's inadequate preflight fuel planning, which resulted in departure with insufficient fuel to complete the flight, and consequent inflight power loss due to fuel exhaustion.
- [NTSB ATL84FA222](https://openairdocs.org/ntsb/ATL84FA222.md): Piper PA-32R-300 · Rock Hill, SC · Accident · No injuries · Field investigation · Final report · Jul 18, 1984 · N400WS · Destroyed
  > The acft was destroyed in a post flt fire after a forced landing at night in a private yard. The engine had surged and lost power during the descent through 4500 ft prior to landing. The acft had been written up for sluggishness and lack of response to…

## 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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52260'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52260&status=final

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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.