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NTSB investigations: Pratt & Whitney R1340 series, IL

22 cases on aircraft whose registry engine model is Pratt & Whitney R1340 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.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19682026

Where

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."eventStateOrRegion" = 'IL' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52016')) 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.\"eventStateOrRegion\" = 'IL' AND c.\"eventCountry\" = 'USA'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52016'))
  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."eventStateOrRegion" = 'IL' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52016'))
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 CEN25LA283Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-301 · Hartsburg, ILThe pilot’s failure to maintain control of the airplane during takeoff with a tailwind from a wet turf airstrip.Jul 23, 2025 · N2371V · Substantial damage NTSB GAA18CA401Accident · No injuriesData collectionFinal reportGrumman G164 · Rochelle, ILThe pilot’s failure to move the power lever to the proper position before takeoff, which resulted in insufficient airspeed and a subsequent aerodynamic stall.Jul 5, 2018 · N6795Q · Substantial damage 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.Jul 21, 2010 · N45297 · Substantial damage NTSB CEN09CA535Accident · No injuriesData collectionFinal reportAir Tractor AT-301 · Leland, ILA total loss of engine power in flight due to a loss of engine oil as a result of the separation of the propeller hub components for undetermined reasons.Aug 17, 2009 · N73102 · Substantial damage NTSB CEN09CA514Accident · Minor injuriesData collectionFinal reportAir Tractor AT-301 · DeWitt, ILThe pilot's failure to maintain clearance from the tree during the aerial application maneuver.Aug 10, 2009 · N5018S · Substantial damage NTSB CEN09LA355Accident · 1 fatalLimited investigationFinal reportAero Commander S2R · Cordova, ILThe pilot’s failure to maintain clearance with terrain after clearing an obstacle during an agricultural application pass.Jun 12, 2009 · N1734S · Destroyed NTSB CHI08CA198Accident · No injuriesData collectionFinal reportRockwell S2R · Carthage, ILThe pilot failed to maintain directional control during the takeoff roll. Contributing to the accident were the uneven runway, the runway edge, and the cornfield.Jul 18, 2008 · N8466V · Substantial damage NTSB CHI07CA303Accident · No injuriesData collectionFinal reportNorth American SNJ-5 · Bloomington, ILThe pilot's failure to maintain directional control during takeoff roll which resulted in a ground loop.Sep 22, 2007 · N11HP · Substantial damage NTSB CHI07LA221Accident · Serious injuriesLimited investigationFinal reportGrumman G-164A · Moline, ILFatigue failure of the engine cylinder during cruise flight resulting in a loss of engine power. Additional causes were the pilot's failure to maintain sufficient airspeed and the resulting inadvertent stall during the forced landing. A contributing factor…Jul 22, 2007 · N9828 · Destroyed NTSB CHI07CA188Accident · No injuriesData collectionFinal reportAir Tractor AT-301 · Walkerville, ILThe altitude/clearance not maintained by the pilot during the aerial application flight. The corn was a contributing factor.Jun 30, 2007 · N5230S · Destroyed NTSB CHI02CA224Accident · Minor injuriesData collectionFinal reportAir Tractor AT-301 · Malta, ILThe probable cause of this accident was fuel exhaustion, due to a failure to properly compute initial fuel quantity and/or fuel consumption.Jul 26, 2002 · N2326S · Substantial damage NTSB CHI01LA135Accident · No injuriesLimited investigationFinal reportAir Tractor AT-401 · Warsaw, ILthe rocker assembly failure during low level maneuvering. Factors were the soft and sandy terrain and the unsuitable terrain the pilot encountered during the forced landing.May 12, 2001 · N1008Q · Substantial damage NTSB CHI99LA268Accident · Serious injuriesLimited investigationFinal reportAir Tractor AT-401B · Edelstein, ILan inadequate fuel supply which resulted in fuel exhaustion. Factors associated with the accident were the low altitude at which the power loss occurred and the corn crop the airplane contacted.Jul 31, 1999 · N61775 · Substantial damage NTSB CHI94LA292Accident · Minor injuriesLimited investigationFinal reportGrumman G-164A · Clifton, ILthe pilots failure to keep visual contact with and to avoid unmarked powerlines adjacent to the crop field he was spraying.Aug 23, 1994 · N8971H · Destroyed NTSB CHI90DEE07Accident · Minor injuriesFinal reportSchweizer G-164B · Deer Grove, ILThe pilot's inadequate visual lookout, resulting in collision with a power line.Jun 26, 1990 · N8483K · Substantial damage NTSB CHI85LA268Accident · Minor injuriesLimited investigationFinal reportNorth American AT-6G · Dixon, ILReportedly, the plt made a touch-&-go landing while following an snj acft. He stated that during the takeoff, the acft had accelerated to 85 mph when he lowered the tail slightly & the acft lifted off normally. He reported that the acft was aprx 4 to 5 ft off…Jul 4, 1985 · N29931 · Substantial damage NTSB CHI80FEV27Accident · No injuriesClosedGrumman G-164B · Atlanta, ILJul 14, 1980 · N6654K · Substantial damage NTSB CHI78DEV24Accident · No injuriesClosedGrumman G-164 · Hudson, ILMar 27, 1978 · N4238 · Substantial damage NTSB CHI77FEE33Accident · Minor injuriesClosedBoeing E75 · Lockport, ILJul 16, 1977 · N4593N · 2 aircraft · Substantial damage NTSB CHI75FEE16Accident · No injuriesClosedBoeing E75 · Streator, ILAug 26, 1974 · N4593N · Substantial damage NTSB CHI74DEV41Accident · No injuriesClosedGrumman G-164A · Ware, ILMar 27, 1974 · N7248 · Substantial damage NTSB CHI69F0010Accident · Serious injuriesClosedN.American AT-6 · Naperville, ILMay 12, 1968 · N2805G · Substantial damage