NTSB investigations: Pratt & Whitney R1340 series, 1991
30 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.
Cases per year
| 1964 | 15 |
|---|---|
| 1965 | 17 |
| 1966 | 16 |
| 1967 | 24 |
| 1968 | 10 |
| 1969 | 19 |
| 1970 | 16 |
| 1971 | 20 |
| 1972 | 20 |
| 1973 | 33 |
| 1974 | 32 |
| 1975 | 44 |
| 1976 | 49 |
| 1977 | 44 |
| 1978 | 50 |
| 1979 | 50 |
| 1980 | 42 |
| 1981 | 52 |
| 1982 | 42 |
| 1983 | 35 |
| 1984 | 42 |
| 1985 | 36 |
| 1986 | 37 |
| 1987 | 34 |
| 1988 | 42 |
| 1989 | 36 |
| 1990 | 34 |
| 1991 | 30 |
| 1992 | 28 |
| 1993 | 29 |
| 1994 | 40 |
| 1995 | 35 |
| 1996 | 31 |
| 1997 | 23 |
| 1998 | 31 |
| 1999 | 30 |
| 2000 | 26 |
| 2001 | 30 |
| 2002 | 30 |
| 2003 | 22 |
| 2004 | 27 |
| 2005 | 20 |
| 2006 | 17 |
| 2007 | 24 |
| 2008 | 33 |
| 2009 | 25 |
| 2010 | 24 |
| 2011 | 29 |
| 2012 | 16 |
| 2013 | 14 |
| 2014 | 16 |
| 2015 | 13 |
| 2016 | 19 |
| 2017 | 11 |
| 2018 | 12 |
| 2019 | 14 |
| 2020 | 6 |
| 2021 | 11 |
| 2022 | 10 |
| 2023 | 14 |
| 2024 | 12 |
| 2025 | 9 |
| 2026 | 4 |
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 year(c.\"eventDate\") = 1991
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 year(c."eventDate") = 1991
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" 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 LAX92LA018Accident · No injuriesLimited investigationFinal reportSnow S2C · Bowie, AZThe failure of the pilot to maintain directional control after landing. The unfavorable wind condition was a related factor.NTSB NYC91LA253Accident · No injuriesLimited investigationFinal reportNorth American T-6G · Manchester, NHThe pilot's failure to maintain control. A factor was the unforecasted strong cross winds.NTSB MIA91LA219Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-401 · Sumner, MSFailure of the no. 1 cylinder assembly.NTSB LAX91LA392Accident · Minor injuriesLimited investigationFinal reportNorth American AT-6G · Reno, NVThe failure of the pilot to maintain an adequate clearance between the aircraft and the ground while maneuvering around a pylon, which resulted in a loss of control during landing.NTSB LAX91LA384Accident · No injuriesLimited investigationFinal reportNorth American AT-6D · Hayward, CAThe failure of the pilot to maintain directional control of the aircraft while correcting an unwanted deviation.NTSB LAX91LA362Accident · No injuriesLimited investigationFinal reportSchweizer G164B · Verona, CAThe pilot's improper planning/decision to depart from a runway with high vegetation along the edge and subsequent collision with terrain.NTSB LAX91LA364Accident · No injuriesLimited investigationFinal reportGrumman G-164 · Wasco, CAA total loss of engine power due to a fracture of the camshaft and the subsequent forced landing into a soft field.NTSB CHI91DTG07Accident · No injuriesFinal reportAyres S2R · Drayton, NDMisjudged clearance by the pilot. A factor related to the accident is overconfidence in personal ability.NTSB SEA91LA200Accident · No injuriesLimited investigationFinal reportRockwell S-2R · Murtaugh, IDThe improper preflight planning/decision by the pilot, resulting in his attempt to takeoff with the aircraft loaded over maximum certificated gross takeoff weight.NTSB FTW91DPG18Accident · No injuriesFinal reportGrumman G-164A · Dewitt, ARThe pilot's failure to maintain proper glidepath. A factor was the berm at the approach end of the runway.NTSB FTW91DRD07Accident · No injuriesFinal reportGrumman G-164B · Donaldsonville, LAThe mechanical failure of the propeller blade pitch positioning bolt. A factor was the lack of suitable terrain available for the forced landing.NTSB CHI91DTG06Accident · No injuriesFinal reportAyres S2R · Drayton, NDThat the pilot did not perform any preflight planning, and did not use the aircraft performance data.NTSB CHI91DCQ07Accident · No injuriesFinal reportGrumman G-164A · Sharon Springs, KSAircraft takeoff performance exceeded and disregard of performance data by the pilot. A factor associated with the accident is high density altitude.NTSB FTW91DPG14Accident · No injuriesFinal reportGrumman G-164A · Swifton, ARPartial failure of the hopper, chemical fire, and the failure of the landing gear. A factor ws the loss of visual outside reference.NTSB ATL91LA128Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-301 · Hawkinsville, GAA complete loss of engine power for undetermined reasons. A factor in this accident was: the rough, uneven terrain at the forced landing site.NTSB MIA91LA183Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Greenwood, FLThe inadequate preflight which resulted in debris in the cockpit which reduced the pilot's visual lookout. Unsuitable terrain encountered during the landing was a factor.NTSB LAX91LA301Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Eloy, AZThe failure of the pilot to maintain the terrain clearance of the aircraft while maneuvering for a potential emergency landing on a moonless dark night.NTSB MIA91LA169Accident · No injuriesLimited investigationFinal reportGrumman G164B · Immokalee, FLLoss of enine power due to undetermined reasons. Contributing to the accident was unsuitable terrain encounteered during the forced landing.NTSB FTW91DRG03Accident · Serious injuriesFinal reportGrumman G-164A · Weslaco, TXFailure of the pilot to maintain clearance.NTSB MIA91LA158Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · High Springs, FLLoss of engine power due to disintegration of the impeller caused by a worn impeller bearing.NTSB SEA91LA136Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Wilson Creek, WAThe loss of engine power in flight due to improper overhaul of the carburetor float assembly fulcrum screw, shutting off fuel flow to the engine.NTSB DEN91LA077Accident · Serious injuriesLimited investigationFinal reportGrumman G-164A · Ville Platte, LAPremature pull up from an aerial application swath run resulting in a collision with an electrical transmission line.NTSB ANC91LA061Accident · 1 fatalLimited investigationFinal reportRockwell S-2R · Larsen Bay, AKThe pilot's decision to continue VFR into IMC conditions and failure to maintain proper altitude. Contributing to the accident was the low ceiling and fog.NTSB FTW91DPG06Accident · No injuriesFinal reportGrumman G-164A · Gillett, ARThe windshiled becoming obscured by aerial application spray and the resultant limited vision from the cockpit.NTSB FTW91LA076Accident · No injuriesLimited investigationFinal reportGrumman G-164 · Pioneer, LAThe pilot's use of a runway unsuitable due to recent rains.NTSB MIA91LA101Accident · Serious injuriesLimited investigationFinal reportAir Tractor AT-401 · Avon, MSLoss of engine power for undetermined reasons during a turn while on an aerial application flight. Contributing to the accident was failure of the left magneto due to failure of a phenolic gear which drives the rotating magnet.NTSB FTW91DPG02Accident · No injuriesFinal reportGrumman G-164A · Light, ARThe pilot's selection of the downwind runway for landing. A factor was the tailwind.NTSB LAX91LA109Accident · No injuriesLimited investigationFinal reportRockwell S2R-600 · Corcoran, CAFailure of the aircraft engine's fuel pump valve assembly bypass.NTSB ATL91LA059Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · Pavo, GAThe failure of the no. 2 exhaust valve and cylinder head, which resulted in a total loss of engine power. A factor in the accident was the collision with a road sign during the forced landing.NTSB ANC91LA022Accident · Serious injuriesLimited investigationFinal reportDe Havilland DHC-3 · Nome, AKThe failure of the 1, 2, 6, 7, 8 and 9 piston linkrods which were broken at the master rod attach end. Contributing to the accident was the rough, uneven terrain.