NTSB investigations: Pratt & Whitney R1340 series, AK
34 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
| 1965 | 1 |
|---|---|
| 1966 | 1 |
| 1967 | 1 |
| 1969 | 1 |
| 1973 | 1 |
| 1974 | 2 |
| 1981 | 1 |
| 1982 | 1 |
| 1984 | 1 |
| 1988 | 2 |
| 1989 | 1 |
| 1990 | 2 |
| 1991 | 2 |
| 1999 | 1 |
| 2001 | 2 |
| 2002 | 2 |
| 2006 | 2 |
| 2009 | 1 |
| 2010 | 1 |
| 2011 | 1 |
| 2014 | 1 |
| 2015 | 3 |
| 2016 | 1 |
| 2019 | 1 |
| 2026 | 1 |
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.\"eventStateOrRegion\" = 'AK' 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" = 'AK' 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" 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 ANC26LA067Accident · No injuriesClass 4 · LimitedInvestigation openDehavilland DHC-3 · Denali National Park, AKNTSB CEN19MA141Accident · 6 fatalClass 1 · MajorFinal reportDe Havilland DHC-2 · Ketchikan, AKThe inherent limitations of the see-and-avoid concept, which prevented the two pilots from seeing the other airplane before the collision, and the absence of visual and aural alerts from both airplanes’ traffic display systems, while operating in a geographic…NTSB ANC16LA034Accident · No injuriesLimited investigationFinal reportDe Havilland DHC3 · Homer, AKAn in-flight collision with a bald eagle, which resulted in substantial damage to the left wing.NTSB ANC15FA071Accident · 3 fatalField investigationFinal reportDehavilland DHC 3T · Iliamna, AKThe pilot's decision to depart in dark night, visual meteorological conditions over water, which resulted in his subsequent spatial disorientation and loss of airplane control. Contributing to the accident was the pilot's failure to determine the airplane's…NTSB ANC15MA041Accident · 9 fatalClass 1 · MajorFinal reportDehavilland DHC-3 · Ketchikan, AK(1) the pilot's decision to continue visual flight into an area of instrument meteorological conditions, which resulted in his geographic disorientation and controlled flight into terrain; and (2) Promech's company culture, which tacitly endorsed flying in…NTSB ANC15LA037Accident · No injuriesLimited investigationFinal reportDehavilland DHC-3T · Skwentna, AKThe flutter failure of the right elevator servo tab due to the improper fabrication of the servo tab and maintenance personnel’s subsequent failure to detect anomalies with the servo tab.NTSB ANC14LA035Accident · No injuriesLimited investigationFinal reportDehavilland DHC-3T · Homer, AKThe flutter failure of the right elevator servo tab due to the improper fabrication of the servo tab and maintenance personnel’s subsequent failure to detect anomalies with the servo tab.NTSB ANC11FA107Accident · 1 fatalField investigationFinal reportDehavilland DHC-3T · Kodiak, AKThe pilot’s failure to maintain clearance from a tree during a low altitude maneuver and his failure to maintain control of the airplane. Contributing to the accident was the pilot’s use of over-the-counter sedating medications.NTSB ANC10MA068Accident · 5 fatalClass 1 · MajorFinal reportDehavilland DHC-3 · Aleknagik, AKThe pilot's temporary unresponsiveness for reasons that could not be established from the available information. Contributing to the investigation's inability to determine exactly what occurred in the final minutes of the flight was the lack of a cockpit…NTSB ANC09LA065Accident · No injuriesLimited investigationFinal reportNoorduyn UC-64A · Akiachak, AKThe loss of engine power due to the failure of a crankshaft component, resulting in an off-airport landing.NTSB ANC06LA134Accident · No injuriesLimited investigationFinal reportde Havilland DHC-3 · Wainwright, AKThe pilot's failure to adequately compensate for wind conditions during the landing roll, which resulted in a loss of control, and subsequent collision with a ditch when the airplane departed the runway. A factor contributing to the accident was a crosswind.NTSB ANC06LA103Accident · Serious injuriesLimited investigationFinal reportde Havilland DHC-3 · Juneau, AKThe pilot's failure to maintain altitude/clearance during approach, which resulted in the airplane impacting the surface of the water. Factors associated with the accident were the flat-light and glassy water conditions, which affected the pilot's ability to…NTSB ANC03LA021Accident · No injuriesLimited investigationFinal reportde Havilland DHC-3 · Nikolai, AKAn improper and undocumented major repair of the elevator torque tube support assembly by an unknown person, which resulted in an in-flight disconnection of the airplane's right elevator, and a jammed rudder. A factor associated with the accident is the…NTSB ANC02LA115Accident · No injuriesLimited investigationFinal reportde Havilland DHC-3 · Tenakee Springs, AKThe pilot's misjudgment of the airplane's speed/distance from a dock resulting in the airplane drifting into a wooden piling during a taxi from landing. A factor in the accident was the presence of a tidal current.NTSB ANC01LA138Accident · Minor injuriesLimited investigationFinal reportde Havilland DHC-3 · Cordova, AKThe loss of engine power during cruise due to the fracture of an engine cylinder exhaust valve.NTSB ANC01LA062Accident · No injuriesLimited investigationFinal reportNoorduyn UC-64A · Seward, AKThe pilot's inadvertent stall of the airplane during takeoff. Factors associated with the accident were the pilot's inadequate weather evaluation, his inadequate compensation for wind conditions, and turbulence.NTSB ANC99LA057Accident · No injuriesLimited investigationFinal reportde Havilland DHC-3 · Healy, AKThe pilot's selection of an unsafe/hazardous area for landing. Factors in the accident were the presence of a tail wind, the pilot's inadequate evaluation of the wind conditions, and a narrow airstrip.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 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.NTSB ANC90LA184Accident · No injuriesLimited investigationFinal reportDe Havilland DHC-3 · King Salmon, AKThe pilot-in-command's failure to maintain airplane control during the takeoff roll, and failure of not attaining airspeed on takeoff.NTSB ANC90LA103Accident · Minor injuriesLimited investigationFinal reportDe Havilland DHC-3 · Beaver Village, AKMechanical failure of an exhaust rocker arm.NTSB ANC89LA156Accident · No injuriesLimited investigationFinal reportde Havilland DHC-3 · Sheenjek River, AKFailure of the pilot to go around when he was unable to attain the proper touchdown point and his excessive application of brakes during the landing. Contributing factors were: the downdraft, excessive remedial action, and soft terrain.NTSB SEA88LA132Accident · No injuriesLimited investigationFinal reportDe Havilland DHC-3 · Wrangell, AKPlt attempted flight through a mountain pass in the presence of low clouds and fog. Visual ground reference was lost and the acft collided with a snow bank. Plt cited personal and company-induced pressures as factors. Operator completed accident report.NTSB ANC88LA066Accident · No injuriesLimited investigationFinal reportDe Havilland DHC-3 · Eagle, AKThe pilot was attempting to land a heavily loaded De Havilland otter (DHC-3) on a gravel strip in rural Alaska. Upon touchdown, the pilot reported that the airplane veered slightly to the right. He unlocked the tail wheel centering device and attempted to…NTSB ANC85LA014Accident · No injuriesLimited investigationFinal reportde Havilland Otter DHC-3 · Dan Creek, AKAccording to the plt the acft hit a downdraft, landed hard and struck the wing on the rwy surface. The wind was reported from 360 deg 15 KTS gusting to 20 KTS.NTSB ANC83IA007Incident · No injuriesIncident investigationFinal reportde Havilland DHC-3 · Homer, AKAfter removing the floats and reinstalling the wheels on the aircraft, the pilot received permission to take off on a roadway bridge thats spans beluga lake. The purpose of the flight was to ferry the plane to nearby Homer airport. On takeoff, the aircraft…NTSB ANC81DA076Accident · No injuriesClosedDehavilland DHC-3 · South Naknek, AKNTSB ANC75AA011Accident · No injuriesClosedDehavilland DHC-3 · Bethel, AKNTSB ANC75AA004Accident · No injuriesClosedAero Comdr 600S2R · Umiat, AKNTSB ANC74AA043Accident · No injuriesClosedDehavilland DHC-3 · Eek, AKNTSB ANC69A0042Accident · No injuriesClosedDehavilland DHC-3 · Port Moller, AKNTSB ANC67A0053Accident · No injuriesClosedDehaviland DHC-3 · Anchorage, AKNTSB ANC66A0052Accident · No injuriesClosedSikorsky S55 · Kenai, AKNTSB ANC66F0005Accident · No injuriesClosedAmerican 100B · Dry Bay, AK