NTSB investigations: Pratt & Whitney Canada PT6A-135A

10 cases on aircraft whose registry engine model is Pratt & Whitney Canada PT6A-135A. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19842026

NTSB investigations: Pratt & Whitney Canada PT6A-135A per year, 1984–2026: 10 cases
1984	1
2013	1
2015	2
2017	2
2019	1
2021	2
2026	1

Where

Open the map

Latest cases

Query with 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 ('52260')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

duckdb -csv -c "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 ('52260'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

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 ('52260'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

NTSB CEN26LA116Accident · No injuriesClass 4 · LimitedFinal reportBeech C90 · Guymon, OKThe collision with a white-tailed deer during the takeoff in night visual conditions.Feb 14, 2026 · N247MD · Substantial damage NTSB CEN21FA238Accident · 2 fatalClass 3 · FieldFinal reportLancair Evolution · McDermott, OHThe 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.May 28, 2021 · N515DL · Destroyed NTSB WPR21LA142Accident · No injuriesClass 3 · LimitedFinal reportDavis Dan B Lancair Evolution · Phoenix, AZA malfunction of the main cabin door latching mechanism for reasons that could not be determined based on the available information.Mar 18, 2021 · N469KS · Substantial damage NTSB GAA19WA478Accident · No injuriesForeign investigationBeech C90 · Bucaramanga, ColombiaJul 11, 2019 · N989AE · Substantial damage NTSB WPR17FA155Accident · 2 fatalField investigationFinal reportEvolution 19 Lancair Evolution · Mesa, AZThe 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…Jul 17, 2017 · N571JM · Substantial damage NTSB WPR17LA104Accident · Minor injuriesClass 3 · LimitedFinal reportEvolution Air Lancair Evolution · Firebaugh, CAA failure in the windshield, frame, or windshield-to-frame bond, which resulted in a rapid decompression during cruise flight.May 15, 2017 · N846PM · Substantial damage NTSB WPR15LA242Accident · 1 fatalLimited investigationFinal reportBartels Lancair · Pacific Ocean (Pacific Ocean)The pilot's incapacitation for reasons that could not be determined because the airplane was not recovered from the ocean.Aug 14, 2015 · N427LE · Destroyed NTSB WPR15IA105Incident · No injuriesIncident investigationFinal reportEvo13 Lancair Evolution · San Carlos, CAThe 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.Feb 15, 2015 · N3WB · Minor damage NTSB WPR13LA416Accident · Serious injuriesLimited investigationFinal reportBeech C90 - A · Idaho Falls, IDThe 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.Sep 19, 2013 · N191TP · Substantial damage NTSB ATL84FA222Accident · No injuriesField investigationFinal reportPiper PA-32R-300 · Rock Hill, SCThe 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…Jul 18, 1984 · N400WS · Destroyed