NTSB investigations: Pratt & Whitney R1340 series
45 cases on aircraft whose registry engine model is Pratt & Whitney R1340 series, where the defining event was Loss of engine power (total). 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 | 8 |
|---|---|
| 2009 | 2 |
| 2010 | 3 |
| 2011 | 8 |
| 2012 | 2 |
| 2013 | 3 |
| 2014 | 5 |
| 2015 | 2 |
| 2016 | 2 |
| 2018 | 3 |
| 2019 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2024 | 1 |
| 2025 | 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 ('52016')
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\" = '341'))
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 ('52016')
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" = '341'))
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 CEN25LA323Accident · No injuriesClass 3 · LimitedPreliminary reportGrumman American Avn. G-164B · Fowler, INOn August 15, 2025, about 1910 eastern daylight time, a Grumman American Avn. Corp. G-164-B airplane, N7015N, was substantially damaged when it was involved in an accident near Fowler, Indiana. The pilot was not injured. The airplane was operated under Title…NTSB CEN25LA306Accident · Serious injuriesClass 3 · LimitedPreliminary reportAir Tractor AT-301 · Davenport, NDOn August 6, 2025, at 2035 central daylight time, an Air Tractor Inc AT-301 airplane, N23069, was substantially damaged when it was involved in an accident near Davenport, North Dakota. The commercial pilot sustained serious injuries. The airplane was…NTSB CEN24LA364Accident · No injuriesClass 4 · LimitedFinal reportGrumman G-164A · LaPlace, LATotal loss of engine power during the agricultural application flight for reasons that could not be determined.NTSB CEN22LA187Accident · No injuriesClass 3 · LimitedFinal reportNorth American AT-6D · Fredericksburg, TXA total loss of engine power due to a failure of the No. 1 cylinder.NTSB CEN22LA157Accident · Serious injuriesClass 3 · LimitedFinal reportAir Tractor AT-401 · Rayville, LAA loss of engine power for a reason that could not be determined based on available information.NTSB ERA21FA334Accident · 1 fatalClass 3 · FieldFinal reportNorth American SNJ-2 · Wilkes-Barre, PAA partial loss of engine power for undetermined reasons. Also causal was the pilot’s exceedance of the airplane’s critical angle of attack while maneuvering for a forced landing following the loss of engine power, which resulted in an aerodynamic stall and…NTSB CEN19LA156Accident · No injuriesClass 3 · LimitedFinal reportRockwell S 2R · Oakes, NDThe failure of the helical cam gear of the engine assembly due to fatigue cracks in the gear teeth, which resulted in a total loss of engine power.NTSB WPR19LA014Accident · No injuriesClass 3 · LimitedFinal reportNorth American SNJ · Agoura Hills, CAThe failure of the No. 5 piston rod end due to fatigue, which resulted in a total loss of engine power.NTSB WPR18LA189Accident · No injuriesClass 3 · LimitedFinal reportGrumman G164B · Colusa, CATotal loss of engine power for reasons that could not be determined based on the available information.NTSB WPR18LA128Accident · No injuriesClass 3 · LimitedFinal reportGrumman Acft ENG Cor-Schweizer G 164C · Maxwell, CAA total loss of engine power due to an uncommanded closing of the fuel shutoff valve, which terminated fuel to the engine. The reason for the fuel shutoff valve’s closure could not be determined based on the available information.NTSB ERA16LA242Accident · No injuriesLimited investigationFinal reportGrumman Acft ENG Cor-Schweizer G-164 · Laurel, DEA total loss of engine power due to an encounter with a bird, which collided with the spray pump fan assembly and subsequently sent blade fragments into the engine compartment, damaging the throttle linkage.NTSB ERA16LA130Accident · No injuriesLimited investigationFinal reportGrumman Acft ENG Cor-Schweizer G-164 · Myakka, FLA total loss of engine power for reasons that could not be determined because postaccident examination of the engine revealed no mechanical anomalies that would have precluded normal operation.NTSB WPR15LA194Accident · Minor injuriesLimited investigationFinal reportGrumman Acft ENG Cor-Schweizer G 164A · Five Points, CAMaintenance personnel’s improper reassembly of the engine during overhaul, which led to the failure of the supercharger-blower due to a lack of lubrication and the subsequent total loss of engine power during takeoff.NTSB WPR15LA106Accident · No injuriesLimited investigationFinal reportGrumman Acft ENG Cor-Schweizer G 164A · Alfalfa, ORA total loss of engine power after takeoff for reasons that could not be determined, because examination of the engine did not reveal any mechanical anomalies that would have precluded normal operation.NTSB WPR15LA023Accident · No injuriesLimited investigationFinal reportAir Tractor AT 301 · Basin City, WAMaintenance personnel’s and the airplane owner’s failure to inspect the engine for cracks in the cylinders as required by an airworthiness directive, which resulted in the loss of engine power during low-altitude maneuvering flight.NTSB ERA15LA030Accident · No injuriesLimited investigationFinal reportNorth American T 6G · Naples, FLThe total loss of engine power during the initial climb due to fuel starvation for reasons that could not be determined because postaccident examinations of the airframe and engine fuel system components revealed no evidence of a mechanical malfunction or…NTSB CEN14LA439Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-401 · Wray, COA loss of the No. 1 cylinder’s compression due to a stuck exhaust valve caused by a lack of sufficient valve clearance, which resulted in a loss of engine power and a forced landing. Contributing to the loss of engine power were the worn intake and exhaust…NTSB CEN14CA442Accident · No injuriesData collectionFinal reportRockwell International S 2R · Kerkhoven, MNThe pilot failure to see and avoid the guide wire during the aerial application flight.NTSB WPR14LA201Accident · No injuriesLimited investigationFinal reportSchweizer G 164B · Biggs, CAThe assembler’s improper fabrication of a fuel line (hose) and the subsequent failure to verify that it was not occluded, which resulted in fuel starvation and a total loss of engine power during takeoff.NTSB CEN13LA519Accident · No injuriesLimited investigationFinal reportGulfstream-Schweizer Gulfstream AM G 164B · Eagle Lake, TXThe failure of one of the engine cylinders, which resulted in the total loss of engine power and subsequent forced landing.NTSB WPR13LA248Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · Wheatland, WYA loss of engine power due to fuel exhaustion and the pilot's inadequate fuel planning.NTSB CEN13LA152Accident · No injuriesLimited investigationFinal reportAir Tractor AT-401 · Victoria, TXThe mechanical failure of the engine power section, which resulted in a loss of engine power.NTSB ERA13LA029Accident · Minor injuriesLimited investigationFinal reportGrumman Acft ENG Cor-Schweizer G-164B · Edison, GAThe total loss of engine power due to the fatigue failure of the k-pin associated with the No. 1 cylinder.NTSB CEN12LA491Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Fergus Falls, MNA total loss of engine power due to a cracked No. 2 cylinder head.NTSB CEN11LA556Accident · No injuriesLimited investigationFinal reportGrumman G-164A · El Campo, TXSeparation of the No. 3 cylinder exhaust valve rocker arm, which resulted in a loss of engine power.NTSB CEN11FA562Accident · No injuriesField investigationFinal reportAir Tractor AT-301 · Nekoosa, WIA total loss of engine power during initial climb for undetermined reasons.NTSB CEN11LA543Accident · No injuriesLimited investigationFinal reportAero Commander S2R · Washington, IAThe loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.NTSB WPR11LA320Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Yuba City, CAHigh-cycle fatigue on the 1st-stage compressor blade retaining ring, which resulted in the ring’s fracture and a subsequent loss of engine power.NTSB WPR11LA279Accident · Serious injuriesLimited investigationFinal reportRockwell International S-2R · Brawley, CAThe partial loss of engine power shortly after takeoff, which likely resulted from the failure of the piston connecting rod in cylinder number 3 due to hydraulic lock in that cylinder.NTSB CEN11LA484Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Cash, ARA loss of engine power for undetermined reasons.NTSB WPR11LA238Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Hazelton, IDA total loss of engine power during low-level maneuvering due to an excessively worn carburetor.NTSB CEN11LA335Accident · No injuriesLimited investigationFinal reportGrumman Acft ENG Cor-Schweizer G-164A · Bono, ARA loss of engine power for undetermined reasons.NTSB WPR10LA396Accident · No injuriesLimited investigationFinal reportGrumman G164 · Tracy, CAA total loss of engine power while maneuvering due to an internal catastrophic failure to the master rod and piston connecting rod links.NTSB CEN10LA420Accident · No injuriesLimited investigationFinal reportAir Tractor AT-401 · Toulin, ILA partial loss of engine power as a result of a cracked cylinder and the reduced visibility due to the oil-covered windshield.NTSB WPR10LA214Accident · No injuriesLimited investigationFinal reportGrumman Acft ENG Cor-Schweizer G-164A · Madera, CAA loss of engine power for undetermined reasons.NTSB CEN09LA503Accident · No injuriesLimited investigationFinal reportAir Tractor AT401 · Waterloo, IAA loss of engine power for undetermined reasons.NTSB CEN09LA239Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · Corning, ARA loss of engine power due to the failure of the number one engine cylinder for undetermined reasons.NTSB DFW08LA223Accident · No injuriesLimited investigationFinal reportRockwell International S-2R · Uvalde, TXA total loss of engine power due to the improper use of unauthorized replacement parts in the engine and repeated operation of the engine in an over-temperature condition.NTSB CHI08CA266Accident · No injuriesData collectionFinal reportAir Tractor AT-301A · Jasper, MNThe pilot's failure to assure the primer control was locked during the aircraft preflight. Factors associated with the accident were the low altitude at which the airplane was operating, the fence, the roadway, and the ditch.NTSB DFW08CA216Accident · No injuriesData collectionFinal reportAir Tractor AT-301 · Wisner, LAThe loss of engine power for undetermined reasons.NTSB CHI08CA251Accident · Minor injuriesData collectionFinal reportAir Tractor AT-301B · Monticello, IAPoor preflight planning in that the pilot failed to assure an adequate fuel supply was on board for the flight which resulted in fuel exhaustion. Factors associated with the accident were the low altitude of the airplane when the loss of power occurred and…NTSB CHI08CA242Accident · No injuriesData collectionFinal reportSchweizer G-164A · Jefferson, IAThe loss of engine power for an undetermined reason and the unsuitable terrain encountered during the forced landing. The corn crop was a factor.NTSB DFW08CA192Accident · No injuriesData collectionFinal reportGrumman G-164A · Bovina, TXLoss of engine power for undetermined reasons.NTSB DEN08LA085Accident · Minor injuriesLimited investigationFinal reportNorth American SNJ-5 · Wolcott, COThe failure of the engine driven fuel pump flange due to oil starvation, resulting in the loss of engine power due to fuel starvation. Contributing to the accident was the lack of suitable terrain for a forced landing.NTSB DFW08CA086Accident · No injuriesData collectionFinal reportAir Tractor At-301 · Plains, KSA loss of engine power as a result of a blocked carburetor. A factor was the lack of suitable terrain for the forced landing.