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 DEN99TA013Accident · No injuriesFinal reportAir Tractor AT-400 · Aztec, NMThe pilot's inadequate preflight inspection of the airplane. Factors were the unsecured oil dipstick, the loss of engine oil pressure necessitating a precautionary landing on unsuitable terrain, and the collision with the tree.NTSB ATL99LA009Accident · Serious injuriesLimited investigationFinal reportAir Tractor AT502B · Bainbridge, GAThe pilot's inadequate visual lookout which resulted in a collision with an irrigation unit located in the field.NTSB FTW99LA005Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502B · Ringling, OKThe pilot's failure to maintain obstacle clearance. A factor was the sun glare which impaired the pilot's vision.NTSB FTW98LA383Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-502B · Portales, NMThe pilot's failure to maintain adequate altitude/clearance during an aerial application. Also causal was the inadvertent ground loop/swerve during the landing.NTSB MIA98LA202Accident · No injuriesLimited investigationFinal reportAir Tractor 502 · Clewiston, FLThe pilot's failure to attain adequate airspeed. A tailwind was a contributing factor.NTSB CHI98LA243Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-502 · Minto, NDthe pilot's selection of unsuitable terrain for takeoff. Factors were wet and soft runway conditions, and a ditch and the end of the overrun area.NTSB MIA98LA178Accident · No injuriesLimited investigationFinal reportAir Tractor 502 · Clarksdale, MSThe pilot's failure to extend the flaps for takeoff. A factor was his diverted attention to the loading of the airplane.NTSB FTW98LA205Accident · No injuriesLimited investigationFinal reportAir Tractor AT-402 · Forrest City, ARThe pilot's failure to maintain clearance with terrain. Factors were the sunglare and the pilot's restriction to visibility due to chemicals on the windshield.NTSB FTW98LA140Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-502B · Lake Village, ARThe pilot's use of unsuitable terrain for takeoff. A factor was the rough/uneven terrain.NTSB CHI98LA084Accident · No injuriesLimited investigationFinal reportCessna 208B · Grand Island, NEice build-up on the airplane's wings and empennage which led to an inadvertent stall and hard landing. Factors contributing to this accident were the pilot's inadvertent flight into icing conditions, and the icing conditions.NTSB FTW98FA100Accident · 1 fatalField investigationFinal reportAir Tractor 502B · Eudora, ARThe pilot's failure to maintain adequate airspeed while attempting an aerobatic manueverNTSB NYC98LA050Accident · No injuriesLimited investigationFinal reportBeech 1900D · Windsor Locks, CTThe inadequate snow removal by airport personnel. Contributing factors were the snowbank and whiteout conditions.NTSB FTW98LA035Accident · No injuriesLimited investigationFinal reportPilatus PC-6 · Lexington, TXthe pilot's selection of an unsuitable landing area. A factor relating to the accident was: the uneven terrain (with swales) at the edge of the landing area.NTSB ANC98IA004Incident · No injuriesIncident investigationFinal reportCessna 208B · Kasigluk, AKinadequate inspection of the aileron by company maintenance personnel, and the pilot's inadequate preflight inspection of the aileron, which led to the jamming of the left aileron due to loose balance weight retaining screws.NTSB NYC98LA013Accident · Minor injuriesLimited investigationFinal reportBeech 1900D · Pittsburgh, PAthe tug driver's failure to obey a stop sign and his failure to yield right-of-way to the airplane.NTSB LAX98FA013Accident · No injuriesField investigationFinal reportBeech 99-C99 · Meadview, AZThe pilot's inadequate in-flight decision, inadequate visual lookout, and his failure to maintain adequate obstacle clearance. Contributing was low altitude flight.NTSB DCA98MA002Accident · 9 fatalMajor investigationFinal reportCessna 208B · Montrose, COthe pilot's failure to maintain sufficient airspeed for undetermined reasons while maneuvering the airplane near the maximum gross weight and aft cg in or near instrument meteorological conditions, resulting in the loss of control and entry into a stall/spin.…NTSB FTW97LA331Accident · No injuriesLimited investigationFinal reportAir Tractor AT-802A · Pineland, TXfailure of the right main wheel brake, during the landing roll. A factor relating to the accident was: the pilot's failure (or inability) to maintain directional control of the airplane, after loss of right braking action.NTSB FTW97LA329Accident · No injuriesLimited investigationFinal reportFairchild Heli-Porter PC6/B2-H2 · Gillette, WYFailure by the pilot in command to follow procedures and retrim the stabilizer for landing.NTSB FTW97FA285Accident · 1 fatalField investigationFinal reportAyres S2R-T15 · Oakridge, LAThe pilot's failure to maintain clearance for undetermined reasons.NTSB LAX97LA250Accident · No injuriesLimited investigationFinal reportde Havilland DHC-6-300 · Elko, NVThe failure of maintenance personnel to correctly diagnose and correct a reoccurring nose gear steering problem, and the improperly tensioned nose wheel steering actuator cables which provided the pilot with an erroneous cockpit indication that the nose gear…NTSB MIA97LA195Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502 · Tunica, MSThe pilots poor preflight planning preparation for attempting to takeoff with a tailwind and with the hopper loaded 3/4 full during a 93degree F., day at a density altitude of 2,400 feet.NTSB ATL97LA088Accident · No injuriesLimited investigationFinal reportAir Tractor AT-402B · Ridgely, TNThe pilot's inadequate preflight planning in that he failed to account for the high temperature and high density altitude, which resulted in an aerodynamic stall and loss of control. Factors were the tall crops and the ditch.NTSB NYC97IA123Incident · No injuriesIncident investigationFinal reportBeech 1900D · Clarksburg, WVThe right outboard flap detaching from the flap aft roller bearings, at the flap track, which was a result of the manufacturer's inadequate inspection program.NTSB FTW97LA225Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502A · Chesterville, TXan undetermined malfunction/failure of the propeller reversing system.NTSB FTW97LA223Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-400A · Black Oak, ARThe loss of engine power due to compressor turbine blade failure. A factor was the lack of suitable terrain for the forced landing.NTSB FTW97LA196Accident · Minor injuriesLimited investigationFinal reportAyres S2R-T34 · Welsh, LAThe pilot's failure to maintain clearance with a moving vehicle. Factors were: the lack of runway signs and a runway safety area, and the difficulty for the pilot and driver of the vehicle to visually detect each other due to high vegetation at the edge of…NTSB MIA97WA124Accident · No injuriesForeign investigationBeech E-90 · Choque, PeruNTSB FTW97LA140Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502 · Watson, ARThe pilot's failure to attain lift off speed and the ground loop/swerve encountered. Factors were the gravel and soft terrain at the end of the runway.NTSB LAX97LA125Accident · No injuriesLimited investigationFinal reportCessna 425 · Fresno, CAfailure of the right brake to function, due to the installation mechanic's failure to completely bleed all air from the lines. A factor in the accident was the pilot's decision to fly the unairworthy aircraft before the engine/propeller installation had been…NTSB FTW97LA088Accident · Minor injuriesLimited investigationFinal reportBeech B90 · Longmont, COFailure of the pilot to refuel the airplane, resulting in fuel exhaustion. Factors were the pilot's reference to similar but different aircraft performance charts, and the operator's failure to provide the pilot with the proper performance charts.NTSB NYC97FA045Accident · Minor injuriesField investigationFinal reportBeech 1900D · Bangor, METhe inadequate flight and winter operations training provided by the operator, and the pilot's improper decision to abort the takeoff while airborne above V1, due to a false stall warning horn. Also casual was the airport operations improper decision to…NTSB MIA97GA059Accident · 1 fatalFinal reportAyres S2RHG-T65 · Guaviare, Colombiathe pilot's failure to maintain adequate altitude/clearance while maneuvering at a low altitude.NTSB FTW97LA074Accident · No injuriesLimited investigationFinal reportBeech C90A · Rio Grande City, TXThe pilot's failure to maintain clearance with the tower. Factors were the low ceilings and the pilot's diverted attention to his navigation.NTSB CHI97IA029Incident · No injuriesIncident investigationFinal reportBeech 1900D · Hopkensville, KYthe materials used in the new windshield, to meet new EPA requirements, were inadequate for the design.NTSB MIA97LA012Accident · Minor injuriesLimited investigationFinal reportAir Tractor 400 · Sylvester, GAWas the pilots intentional disregard for operating the engine contrary to the flight manuals for intentionally exceeding the maximum engine temperature, resulting in creep failure of one of the compressor turbine blades.NTSB MIA96LA232Accident · 1 fatalLimited investigationFinal reportAir Tractor 402 · Slocomb, ALThe pilot's failure to maintain airspeed.NTSB FTW96FA399Accident · 1 fatalField investigationFinal reportAyres S2R-T45 · Granger, TXthe pilot's inadvertent flight into adverse weather conditions, and subsequent loss of aircraft control due to spatial disorientation. Factors relating to the accident were darkness, the prevailing fog and low ceilings, the inadequate flight instruments…NTSB ATL96LA130Accident · 1 fatalLimited investigationFinal reportAir Tractor 402 · Mayersville, MSthe pilot's misjudgment of his ground speed and distance to trees during the swath run, and his delayed pull-up at the end of the swath run, which resulted in his failure to remain clear of the trees. The tail wind and location of the trees were related…NTSB LAX96LA328Accident · No injuriesLimited investigationFinal reportCessna 425 · Auburn, CAfailure of the right brake system (master cylinder O-ring seal). Factors relating to the accident were: the narrow runway, and the presence of a ditch adjacent to the runway.NTSB CHI96IA191Incident · No injuriesIncident investigationFinal reportBeech 1900 · Lansing, MIthe short in the windshield anti-ice low power braided copper lead wire caused a fire that had resulted from the manufacturer's inadequate design.NTSB ANC96LA076Accident · Minor injuriesLimited investigationFinal reportBeech 99C · Barrow, AKan in-flight collision with a bird.NTSB MIA96WA150Accident · 3 fatalForeign investigationde Havilland DHC-6-200 · Bagua, PeruNTSB NYC96LA058Accident · Minor injuriesLimited investigationFinal reportBeech 1900D · Bradford, PAthe pilot misjudged the flare during landing. Factors in the accident were: an improper recovery from a bounced landing, and the first officers lack of experience in this type operation.NTSB LAX96LA070Accident · No injuriesLimited investigationFinal reportCessna 208B · Sacramento, CAthe pilot was given an erroneous wind velocity due to a malfunctioning wind gauge in the control tower. Factors relating to the accident were: the high/gusty wind conditions, and the pilot's improper evaluation of the actual wind condition.NTSB MIA95LA229Accident · 1 fatalLimited investigationFinal reportAir Tractor AT-502 · Lorida, FLMismanagement of the fuel by the pilot resulting in the total loss of engine power due to fuel exhaustion, and the pilot's poor decision to fly over water en route to the refueling airport.NTSB FTW95FA399Accident · 1 fatalField investigationFinal reportAir Tractor AT-502A · Coleman, TXthe pilot's continued flight into adverse weather resulting in spatial disorientation and loss of control. A factor was the pilot's improper weather evaluation and the weather.NTSB ATL95LA168Accident · No injuriesLimited investigationFinal reportAir Tractor 502B · Minter City, MSInadequate preflight planning/preparation by the pilot. Factors relating to the accident were: the excessive gross weight of the airplane and the high outside air temperature, which would have reduced the performance of the airplane.NTSB CHI95LA278Accident · 1 fatalLimited investigationFinal reportAir Tractor AT-400 · Hayti, MOthe pilot inadvertently stalled the airplane. A factor was the reduced power setting.NTSB LAX95LA283Accident · No injuriesLimited investigationFinal reportPZL-Mielec PZL-M-18 · Sacaton, AZThe loss of engine power due to a decoupling of the accessory drive that runs the high pressure engine-driven fuel pump.