NTSB investigations: Pratt & Whitney PT6A series
24 cases on aircraft whose registry engine model is Pratt & Whitney PT6A series, where the defining event was Loss of control on ground. 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.
Cases per year
| 2008 | 2 |
|---|---|
| 2009 | 1 |
| 2011 | 3 |
| 2012 | 3 |
| 2013 | 1 |
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 2 |
Where
Open the mapLatest cases
Query with SQL
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 ('52032', '52034')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e.\"isDefiningEvent\" AND e.\"tier2Number\" = '230'))
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 ('52032', '52034')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '230'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun 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 ERA26LA172Accident · No injuriesClass 3 · LimitedPreliminary reportDehavilland DHC-3 · Dry Tortugas, FLOn April 11, 2026, about 0845 eastern daylight time, an amphibious DeHavilland DHC-3, N708KA, was substantially damaged when it was involved in an accident near Dry Tortugas, Florida. The pilot was not injured. The airplane was operated as a Title 14 Code of…NTSB CEN26LA127Accident · No injuriesClass 4 · LimitedFinal reportRaytheon B36TC · Durango, COThe pilot’s improper landing flare and subsequent loss of directional control while attempting to land during high crosswind conditions.NTSB CEN25FA197Accident · 1 fatalClass 3 · FieldPreliminary reportAir Tractor AT-502 · Grady, AROn June 6, 2025, about 1830 central daylight time, an Air Tractor AT-502 airplane, N9185F, was substantially damaged when it was involved in an accident near Grady, Arkansas. The pilot was fatally injured. The airplane was operated as a Title 14 Code of…NTSB ERA25LA061Accident · No injuriesClass 3 · LimitedPreliminary reportBeech B300 · Franklin, NCOn November 28, 2024, about 1019 eastern standard time, a Beech B300, N907EJ, was substantially damaged when it was involved in an accident near Franklin, North Carolina. The airline transport pilot was not injured. The airplane was operated as a Title…NTSB ANC21LA025Accident · No injuriesClass 4 · LimitedFinal reportCessna 208B · Chevak, AKThe pilot’s loss of directional control during the back-taxi for departure in strong crosswind conditions which resulted in a runway excursion. Contributing to the accident was the snow-and-ice-covered runway.NTSB CEN20CA190Accident · Minor injuriesClass 4 · Data collectionFinal reportAir Tractor AT502 · Bunkie, LAThe pilot's failure to maintain directional control during takeoff.NTSB CEN20CA103Accident · No injuriesData collectionFinal reportAir Tractor AT 602 · Bunkie, LAThe pilot's failure to lock the tailwheel before landing, which resulted in his loss of directional control during the landing roll, a runway excursion onto soft ground, and a subsequent ground loop.NTSB GAA19CA010Accident · No injuriesData collectionFinal reportAir Tractor AT 402 · Crowley, LAThe pilot's selection of unsuitable terrain for takeoff, which resulted in a collision with vegetation and a subsequent loss of directional control.NTSB GAA18CA476Accident · No injuriesData collectionFinal reportAir Tractor AT502 · Louise, MSThe pilot's improper landing flare, which resulted in a hard, bounced landing and a subsequent loss of directional control.NTSB WPR17LA177Accident · No injuriesLimited investigationFinal reportAir Tractor AT 802A · Wells, NVThe pilot's failure to maintain directional control during a period of thermal activity, which led to a runway excursion and impact with terrain.NTSB CEN17LA123Accident · No injuriesLimited investigationFinal reportBeech C 99 · Durango, COThe pilot's inability to maintain directional control during takeoff in crosswind conditions on a contaminated runway, which resulted in a runway excursion.NTSB GAA16CA477Accident · No injuriesData collectionFinal reportPacific Aerospace 750XL · Warrenton, VAThe pilot's failure to set the wing flaps for takeoff, which resulted in an aerodynamic stall, an aborted takeoff, and a runway overrun.NTSB GAA16CA224Accident · No injuriesData collectionFinal reportAir Tractor AT 502 · Oberlin, KSThe pilot's failure to maintain directional control during the landing roll, which resulted in runway excursion, and a ground loop.NTSB ERA15LA124Accident · No injuriesLimited investigationFinal reportDehavilland DHC 6 Twin Otter · Sebastian, FLThe pilot's failure to conduct all of the required items on the Before Starting Engines checklist, which resulted in her failure to detect an open hydraulic circuit breaker and led to insufficient hydraulic pressure to operate the airplane's brakes, her…NTSB CEN13LA171Accident · No injuriesLimited investigationFinal reportPiper PA46 · Grand Island, NEThe pilot's failure to maintain airplane control after engine start.NTSB CEN13CA043Accident · Minor injuriesData collectionFinal reportFairchild Heli-Porter Pilatus PC6/B1A-H2 · Georgetown, OHThe pilot's improper recovery from a bounced landing, which resulted in a loss of control.NTSB ERA12CA517Accident · No injuriesData collectionFinal reportAir Tractor AT-402B · Gum Neck, NCThe pilot's failure to maintain airplane control during the takeoff roll. Contributing to the accident was the rough condition of the runway.NTSB CEN12LA323Accident · No injuriesLimited investigationFinal reportThrush S2RHG-T65 · Alicia, ARThe pilot of the Thrush did not execute a go-around prior to landing, which resulted in excessive ground speed after touchdown, and his subsequent loss of directional control, which resulted in a collision with the Air Tractor.NTSB ANC11LA048Accident · No injuriesLimited investigationFinal reportDehavilland DHC-3T · Bettles Field, AKThe pilot's selection of unsuitable terrain for the landing, which resulted in a loss of directional control.NTSB WPR11CA222Accident · No injuriesData collectionFinal reportThrush S2R-T34 · Pleasant Grove, CAThe pilot's failure to maintain directional control during the landing.NTSB WPR11FA158Accident · No injuriesField investigationFinal reportCessna 208B · Bakersfield, CAThe malfunction of a master brake cylinder, which resulted in a loss of braking action and subsequent loss of directional control and collision with three vehicles during taxi. Contributing to the accident was the inappropriate design and manufacture of the…NTSB ERA09CA428Accident · Minor injuriesData collectionFinal reportAir Tractor AT502 · Dundee, MSThe pilot's failure to maintain aircraft control during takeoff.NTSB WPR09CA067Accident · No injuriesData collectionFinal reportCessna 208B · Rock Springs, WYThe pilot's failure to maintain control of the airplane while taxiing. Contributing to the accident were the gusty winds.NTSB DEN08CA136Accident · No injuriesData collectionFinal reportAir Tractor AT-402 · Dexter, NMThe pilot's failure to maintain directional control of the airplane.