NTSB investigations: Pratt & Whitney PT6A series
650 cases on aircraft whose registry engine model is Pratt & Whitney PT6A series. 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, newest first
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'))
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'))
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 ERA14LA071Accident · No injuriesLimited investigationFinal reportPiper PA-46-500TP · Monroe, NCThe pilot’s operation of the airplane with underinflated tires, which resulted in the right tire’s failure during takeoff and a subsequent runway excursion.NTSB WPR14FA024Accident · No injuriesField investigationFinal reportCessna 208 · Wailea, HIImproper maintenance that resulted in contamination of the engine's compressor turbine disc and blade assembly by glass bead remnants, which resulted in a blade failure.NTSB DCA13FA148Accident · No injuriesField investigationFinal reportBeech 1900D · Telluride, COFailure of the left main landing gear actuator internal lock to engage in the locked position for undetermined reasons.NTSB CEN13LA568Accident · No injuriesLimited investigationFinal reportAir Tractor AT 802 · Gould, ARThe failure of a bearing in the fuel control unit, which resulted in fuel starvation and a total loss of engine power.NTSB CEN13LA421Accident · No injuriesLimited investigationFinal reportCessna 208B · Chicago, ILThe gate agent’s premature removal of the tailstand without confirming with the flight crew that it was safe to remove, which allowed the airplane to tilt backward when a passenger stood up and stepped toward the back of the airplane.NTSB CEN13LA473Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502B · Nauvoo, ILA fatigue failure of an engine compressor turbine blade, which resulted in extensive secondary engine damage and a complete loss of engine power.NTSB CEN13LA414Accident · Minor injuriesLimited investigationFinal reportAyres S2R-T41 · Coy, ARThe propeller’s uncommanded reverse thrust during the landing flare due to improper rigging of the propeller’s governor linkage.NTSB CEN13LA402Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502B · Tillar, ARThe loss of engine throttle control during takeoff due to an unsecured cockpit throttle control pin, which resulted in a runway overrun.NTSB CEN13LA371Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502B · Campbell, NEThe pilot's decision to continue with the takeoff roll despite the airplane's difficulty becoming airborne The high-density altitude likely contributed to the airplane's reduced performance.NTSB CEN13LA353Accident · Serious injuriesLimited investigationFinal reportAir Tractor AT-802A · Minot, NDThe pilot’s failure to maintain adequate clearance from trees during an aerial application flight.NTSB WPR13LA233Accident · Minor injuriesLimited investigationFinal reportSchweizer G-164D · Butte City, CAThe pilot's failure to maintain airplane control after an encounter with wake turbulence while maneuvering at low altitude. Contributing to the accident was the pilot’s fatigue due to extended hours of wakefulness and high workload.NTSB CEN13IA270Incident · No injuriesIncident investigationFinal reportPiaggio P180 · Clearwater, FLThe failure of the nose landing gear steering manifold during landing, which resulted in an uncommanded and uncontrollable right turn, and the overhaul facility’s improper overhaul of the nose landing gear steering manifold.NTSB WPR13CA228Accident · No injuriesData collectionFinal reportSocata TBM 700 · Sandy Valley, NVThe pilot's failure to extend the landing gear, which resulted in a gear-up landing.NTSB ERA13FA168Accident · 3 fatalField investigationFinal reportPiper PA-31T · Fort Lauderdale, FLThe pilot's failure to maintain airplane control following an emergency, the nature of which could not be determined because of crash and fire damage, which resulted in an aerodynamic stall.NTSB CEN13LA171Accident · No injuriesLimited investigationFinal reportPiper PA46 · Grand Island, NEThe pilot's failure to maintain airplane control after engine start.NTSB CEN13LA168Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-502 · Forrest City, ARThe in-flight separation of the left aileron's push-pull rod and hardware. Contributing to the accident was the failure of maintenance personnel to apply proper torque to the self-locking nuts.NTSB CEN13FA135Accident · 1 fatalField investigationFinal reportCessna 208B · Pellston, MIThe pilot's inadvertent controlled descent into terrain due to spatial disorientation. Contributing to the accident was lack of visual reference due to night conditions.NTSB CEN13FA131Accident · 3 fatalField investigationFinal reportPiper PA46-500TP · Paris, TXThe pilot's encounter with convective weather, which resulted in a loss of airplane control.NTSB CEN13FA080Accident · Minor injuriesField investigationFinal reportCessna 208B · Bryans Corner, OKThe total loss of engine power as a result of a fractured compressor turbine blade due to fatigue cracking.NTSB CEN13FA049Accident · 1 fatalField investigationFinal reportCessna 208B · Wichita, KSThe total loss of engine power as a result of a fractured compressor turbine blade due to high-cycle fatigue.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 ERA12CA581Accident · No injuriesData collectionFinal reportCessna 208B · Statesboro, GAThe pilot’s inadequate flare, which resulted in a hard landing.NTSB WPR12LA433Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502 · Firebaugh, CAThe pilot’s decision to continue the takeoff after the engine stopped producing its full-rated torque while operating in high-density altitude conditions and his subsequent failure to maintain clearance from the power transmission wires.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 CEN12CA568Accident · No injuriesData collectionFinal reportAir Tractor AT-502B · Bogata, TXThe pilot’s inadequate preflight planning, which resulted in the airplane’s loading beyond its maximum gross weight.NTSB CEN12FA521Accident · No injuriesField investigationFinal reportAyres S2R-T34 · Lakin, KSThe pilot's failure to maintain clearance from the corn during an aerial application flight.NTSB CEN12LA500Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502B · Newellton, LAThe pilot's inadequate takeoff planning and his use of an improper flap setting, which resulted in a runway excursion and collision with terrain during takeoff.NTSB WPR12FA332Accident · No injuriesField investigationFinal reportPiaggio P180 · Henderson, NVThe failure of maintenance personnel to properly torque the elevator attachment hardware in accordance with the maintenance manual, which led to the detachment of the elevator. Contributing to the accident were maintenance personnel's failure to identify the…NTSB CEN12LA459Accident · Serious injuriesLimited investigationFinal reportAir Tractor AT-502B · Wisner, LAThe pilot’s inadequate takeoff planning that did not consider the reduced acceleration due to a rough, turf runway and his use of an improper flap setting, which resulted in a collision with terrain during takeoff.NTSB ERA12LA435Accident · No injuriesLimited investigationFinal reportPiper PA-42 · Charleston, WVThe airplane’s encounter with a gravity-wave duct atmospheric phenomenon.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 CEN12FA312Accident · 1 fatalField investigationFinal reportAir Tractor AT-802A · Sedgwick, ARThe inability of both pilots to see and avoid the other airplane, which resulted in a midair collision. Contributing to the accident was the distraction of the Air Tractor pilot by a cellular telephone conversation during the flight.NTSB WPR12LA220Accident · 1 fatalLimited investigationFinal reportGrumman G 164D · Nicolaus, CAThe pilot’s failure to maintain airplane control during a low-altitude maneuver.NTSB CEN12LA310Accident · No injuriesLimited investigationFinal reportAir Tractor AT-602 · Humnoke, ARThe pilot’s failure to attain the proper touchdown point, which resulted in a landing undershoot.NTSB WPR12TA445Accident · No injuriesFinal reportBeech C90 · Boise, IDExcessive loading on the left wing, which occurred over a period of time. Contributing to the accident was maintenance personnel’s failure to adequately inspect and document the left wing damage.NTSB CEN12CA301Accident · No injuriesData collectionFinal reportAir Tractor AT-502B · El Campo, TXThe pilot's decision to rotate early, the airplane’s subsequent inability to climb, and the pilot’s delayed decision to abort the takeoff.NTSB CEN12LA236Accident · Serious injuriesLimited investigationFinal reportAyres S2R-T15 · Lakin, KSThe pilot did not maintain sufficient airspeed while maneuvering, which resulted in an aerodynamic stall at a low altitude.NTSB CEN12CA221Accident · No injuriesData collectionFinal reportAir Tractor AT-402A · Ganado, TXThe improper positioning of the hopper vent, which allowed chemicals to escape and cover the airplane's windshield.NTSB ENG12IA024Incident · No injuriesIncident investigationFinal reportBeech 1900D · Hays, KSA failure of the nose landing gear end cap due to fatigue. Contributing to the failure were the ineffective inspection and the unknown effect of grain direction on fatigue life.NTSB WPR12CA069Accident · Minor injuriesData collectionFinal reportCessna 208 · Mesquite, NVThe pilot's improper preflight planning, which resulted in a loss of engine power due to fuel exhaustion.NTSB ENG12IA013Incident · No injuriesIncident investigationFinal reportBeech 1900D · Denver International Airport, COA failure of the nose landing gear end cap due to fatigue. Contributing to the failure were the ineffective inspection and the unknown effect of grain direction on fatigue life.NTSB ERA12CA003Accident · Serious injuriesData collectionFinal reportAir Tractor AT-502B · Fort Pierce, FLThe pilot's delayed decision to abort the takeoff.NTSB CEN11LA593Accident · Serious injuriesLimited investigationFinal reportAir Tractor AT-400 · Monango, NDThe pilot did not maintain adequate separation from a tree during the aerial-application flight.NTSB WPR11LA388Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-602 · Pine Bluffs, WYThe pilot's failure to maintain clearance from power lines during an aerial application flight.NTSB CEN11LA571Accident · No injuriesLimited investigationFinal reportAir Tractor AT-402 · Uvalde, TXThe pilot’s failure to maintain airspeed while maneuvering to avoid power lines during a precautionary landing, which resulted an aerodynamic stall. Contributing to the accident was the fluctuating engine power for undetermined reasons and the pilot's…NTSB WPR11LA278Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502 · Blackfoot, IDA partial loss of engine power during takeoff for undetermined reasons.NTSB CEN11LA404Accident · Minor injuriesLimited investigationFinal reportAyres S2R-T34 · Athleimer, ARFailure of the first stage planetary gearset in the propeller reduction gearbox, which resulted in catastrophic engine failure. Contributing to the failure was the misrepresentation of the gearset being zero-timed by the company that sold the gearset to the…NTSB WPR11CA252Accident · No injuriesData collectionFinal reportAir Tractor AT-502B · Odessa, WAThe pilot's failure to maintain clearance from the other aircraft.NTSB WPR11LA245Accident · No injuriesLimited investigationFinal reportPiper PA-46-310P · Lake Havasu, AZThe failure of the low pressure switch in the normal landing gear system, which prevented normal operation of that system, and the misrigging of the emergency extension gear release valve, which prevented the system from being depressurized to allow for the…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.