Allison 250-C47 series
NTSB investigations · 60
Matched to the registry by N-number and event date, 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_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = a.case_mkey
WHERE a.engine_model_code IN ('03029')
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_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = a.case_mkey
WHERE a.engine_model_code IN ('03029')
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 WPR26LA062Accident · No injuriesClass 4 · LimitedFinal reportBell 407 · Las Vegas, NVTail rotor blade impact from an unidentified object at an undetermined time.NTSB CEN25LA380Accident · Minor injuriesClass 4 · LimitedFinal reportBell 407 · Decatur, TXThe instructor candidate’s erroneous operation of the throttle during an autorotation from altitude with power recovery, which resulted in a hard landing.NTSB GAA25WA242Accident · No injuriesClass 5 · ForeignMD Helicopters 600N · Storrington, United KingdomNTSB GAA25WA129Accident · No injuriesClass 5 · ForeignMcdonnell Douglas Helicopter 600 · Dos Ríos, MexicoNTSB WPR24LA265Accident · Minor injuriesClass 3 · LimitedFinal reportBell 407 · Raft River, IDThe pilot’s misdiagnosis of an erroneous engine instrument indication and his subsequent decision to enter an autorotation, which resulted in a hard landing due to degraded visual cues and low ambient light conditions. Contributing to the accident were the…NTSB CEN24LA271Accident · Serious injuriesClass 3 · LimitedFinal reportMcdonnell Douglas Helicopter 600N · Eagle Lake, TXThe operator’s improper installation of the fuel system, which resulted in fuel starvation, a loss of engine power, and impact with terrain.NTSB WPR24LA247Accident · Minor injuriesClass 4 · LimitedFinal reportBell 407 · Stanley, IDA sudden wind shift which resulted in a rapid descent and subsequent dynamic rollover and collision into water.NTSB CEN23FA019Accident · 1 fatalClass 3 · FieldFinal reportBell 407 · Morgan City, LAThe pilot’s loss of consciousness due to a cardiovascular event.NTSB WPR22LA333Accident · Serious injuriesClass 3 · LimitedFinal reportBell 407 · Mount Baldy, CAThe pilot’s failure to ensure the throttle was properly positioned before commencing an approach to land, which resulted in a low rotor rpm condition and impact with terrain. Contributing to the accident was a worn throttle detent.NTSB ANC22FA041Accident · Serious injuriesClass 3 · FieldFinal reportBell 407 · Kalea, HIThe in-flight separation of the tail boom as a result of abnormal loading and fracture of the upper-left tail boom attachment bolt due to a gap between the upper-left longeron and aft fuselage bulkhead.NTSB CEN22FA100Accident · 2 fatalClass 3 · FieldFinal reportBell 407 · Houma, LAThe pilot’s sudden loss of consciousness for undetermined reasons during cruise flight, which resulted in a loss of control and impact with terrain.NTSB CEN21LA116Accident · No injuriesClass 4 · LimitedFinal reportMcdonnell Douglas Helicopter 600N · Mankato, MNThe pilot’s loss of situational awareness while landing, resulting in an impact with power lines.NTSB WPR20LA235Accident · No injuriesClass 3 · LimitedFinal reportMcdonnell Douglas 600 · Thompson Falls, MTA partial loss of engine power for reasons that could not be determined based on available evidence.NTSB WPR20LA228Accident · No injuriesClass 3 · LimitedFinal reportMd Helicopter 600 · San Andreas, CAThe failure of the output shaft of the overrunning clutch inner race due to frictional overheating of the shaft, which resulted from the failure of the output bearing’s stainless-steel grease seal.NTSB CEN20LA068Accident · No injuriesClass 3 · LimitedFinal reportBell 407 · Minot, NDThe pilot's failure to maintain clearance from fencing around the landing pad during landing, which resulted in the tail rotor contacting the fence.NTSB ERA20FA056Accident · 1 fatalClass 3 · FieldFinal reportBell 407 · Headland, ALPilot incapacitation by a sudden cardiac event related to severe coronary artery disease, which resulted in a loss of helicopter control.NTSB CEN20FA035Accident · 2 fatalClass 3 · FieldFinal reportBell 407 · Gulf of Mexico (Gulf of Mexico)A total loss of engine power due to the failure of the engine’s Nos. 3 and 4 bearings and the power turbine pinion gear, and subsequent loss of main rotor rpm, which resulted in a loss of control and impact with the water.NTSB CEN19FA095Accident · 2 fatalClass 2 · FieldFinal reportBell 407 · Galliano, LAThe pilot's loss of control during cruise flight as a result of spatial disorientation while operating the helicopter in close proximity to terrain in marginal meteorological conditions.NTSB ERA18FA122Accident · 2 fatalField investigationFinal reportMD Helicopter 600 · Smethport, PAThe helicopter pilot's failure to maintain adequate clearance during power line construction work, which resulted in the helicopter's main rotor striking and becoming entangled with a wire and a subsequent dynamic rollover and collision with terrain.…NTSB CEN17FA112Accident · 1 fatalField investigationFinal reportBell 407 · Chauvin, LAThe pilot's failure to maintain proper altitude resulting in a collision with water for reasons that could not be determined based on the available information.NTSB CEN16LA386Accident · Serious injuriesLimited investigationFinal reportBell 407 · Lawton, OKThe pilot's loss of helicopter control during landing, which resulted in a hard landing and collision with a wall.NTSB WPR16LA081Accident · No injuriesLimited investigationFinal reportMcdonnell Douglas Helicopter 600N · Ashland, ORFatigue cracking of a main rotor blade for reasons that could not be determined based on the available information.NTSB WPR16FA037Accident · 4 fatalField investigationFinal reportBell 407 · McFarland, CAThe pilot's loss of control and collision with terrain while attempting a course reversal after inadvertently entering an area of reduced visibility weather conditions. Contributing to the accident was the pilot's lack of recent experience with night time…NTSB CEN16LA058Accident · Minor injuriesLimited investigationFinal reportMcdonnell Douglas Helicopter 600N · Angleton, TXA loss of control while hovering for reasons that could not be determined, because postaccident examination revealed no mechanical anomalies or failures that would have precluded normal operation.NTSB CEN16LA027Accident · No injuriesLimited investigationFinal reportBell 407 · San Antonio, TXThe failure of the No. 3 tail rotor adapter and shaft due to a loss of torque on the retaining nut. Contributing to the accident was the lack of a requirement to inspect the tail rotor assembly for security in the helicopter manufacturer's maintenance manual…NTSB CEN15LA265Accident · No injuriesLimited investigationFinal reportBell 407 · Pecan Island, LAThe fatigue fracture of the tail rotor gearbox attachment studs, which resulted in a loss of tail rotor control and a subsequent hard landing.NTSB GAA15CA002Accident · No injuriesData collectionFinal reportBell 407 · Justin, TXAbnormal ground contact during an autorotation demonstration, resulting in a severed tailrotor driveshaft.NTSB CEN15IA046Incident · No injuriesIncident investigationFinal reportBell 407 · Viosca Knoll 989Engine power surges during takeoff for reasons that could not be determined during postaccident testing of the engine and the engine control unit.NTSB CEN14FA232Accident · No injuriesField investigationFinal reportBell 407 · Telluride, COThe failure of the power turbine thrust (No. 5) bearing due to overheating as a result of oil starvation, which led to the engine failure. Also causal to the accident was an undocumented repair to the gearbox cover oil delivery tube port during which an…NTSB WPR14LA173Accident · Serious injuriesLimited investigationFinal reportMcdonnell Douglas Helicopter 600N · Adelanto, CAThe commercial pilot’s improper control inputs, which resulted in a loss of helicopter control during takeoff.NTSB CEN13FA491Accident · Minor injuriesField investigationFinal reportBell 407 · Ship Shoal 208H (Gulf of Mexico)The ingestion of vented methane gas into the helicopter’s engine during takeoff, which caused an engine compressor surge that led to a total loss of engine power.NTSB CEN13FA003Accident · 1 fatalField investigationFinal reportBell 407 · Intracoastal City, LAThe pilot’s decision to attempt a local flight in marginal visual meteorological conditions and his subsequent loss of control following an inadvertent encounter with instrument metrological conditions shortly after takeoff.NTSB ERA12TA538Accident · Minor injuriesFinal reportBell 407 · Bath, NYThe pilot's improper recovery from an in-flight upset, which resulted in the main rotor striking and separating the tail boom. Contributing to the accident was the helicopter manufacturer's failure to warn pilots of unanticipated and unequal aft cyclic…NTSB ANC12FA084Accident · 1 fatalField investigationFinal reportMcdonnell Douglas Helicopter 600N · Delta Junction, AKThe pilot’s failure to clear the left landing gear skid, which resulted in the entanglement of the left landing gear skid with a log, and his subsequent application of collective pitch, which resulted in a dynamic rollover.NTSB CEN12LA242Accident · Minor injuriesLimited investigationFinal reportBell 407 · Aberdeen, SDThe fatigue failure of two turbine engine blades due to vibration.NTSB WPR09GA119Accident · Serious injuriesFinal reportMcdonnell Douglas Helicopter 600 · San Clemente, CAFailure of the engine’s number two bearing during cruise flight, which resulted in a loss of engine power.NTSB DEN08MA116Accident · 7 fatalMajor investigationFinal reportBell 407 · Flagstaff, AZBoth helicopter pilots’ failure to see and avoid the other helicopter on approach to the helipad. Contributing to the accident were the failure of N407GA’s pilot to follow flight arrival route guidelines, and the failure of N407MJ’s pilot to follow…NTSB CHI08CA098Accident · Minor injuriesData collectionFinal reportMcDonnell Douglas 600N · Waverly, OHThe pilot's improper flare.NTSB DFW08IA045Incident · No injuriesIncident investigationFinal reportBell 407 · Hig Island A595The loss of tail rotor effectiveness for undetermined reasons.NTSB NYC07FA048Accident · 2 fatalField investigationFinal reportBell 407 · Dagsboro, DEThe pilot's improper decision to depart under visual flight rules into night instrument meteorological conditions. Contributing to the accident was the fog and the dark night conditions.NTSB DFW05FA040Accident · 1 fatalField investigationFinal reportBell 407 · Ship Shoal 130EThe pilot's failure to maintain clearance with a stationary object while maneuvering for landing. Contributing factors were the inadequate facilities available for landing, the pilot's lack of information regarding the landing area, and the operational status…NTSB SEA04MA167Accident · 5 fatalMajor investigationFinal reportBell 407 · Battle Mountain, NVThe pilot's failure to maintain clearance from mountainous terrain. Contributing factors were the pilot's improper decision to take the direct route over mountainous terrain, the dark night conditions, and the pressure to complete the mission induced by the…NTSB CHI04MA182Accident · 4 fatalMajor investigationFinal reportBell 407 · Newberry, SCThe pilot's failure to maintain terrain clearance as a result of fog conditions. A contributing factor was inadequate weather and dispatch information relayed to the pilot.NTSB FTW04LA117Accident · No injuriesLimited investigationFinal reportBell 407 · Hurst, TXThe student pilot's excessive flare prior to touchdown during the practice autorotation which resulted in the tailboom stinger striking the ground. A contributing factor was the flight instructor's delay to take remedial action.NTSB NYC04CA049Accident · No injuriesData collectionFinal reportBell B407 · Morehead, KYThe ground personnel's failure to identify the hazardous condition. Factors were blowing snow and night conditions.NTSB FTW04IA023Incident · No injuriesIncident investigationFinal reportBell 407 · Eugene Is. 27The loss of engine power due to the failure of the 3rd stage turbine wheel and subsequent catastrophic failure of the turbine assembly.NTSB FTW03TA156Accident · No injuriesFinal reportBell 407 · Franklin, LAThe loss of tail rotor effectiveness due to the inadequate maintenance performed by other company personnel.NTSB FTW03FA117Accident · No injuriesField investigationFinal reportBell 407 · Houma, LAThe loss of tail rotor drive and anti-torque control resulting from the fracture and separation of the #5 tail rotor drive segment due to the overtemperature and subsequent failure of the #5 hangar bearing.NTSB FTW03FA097Accident · 2 fatalField investigationFinal reportBell 407 · Mi 700The catastrophic failure of the engine resulting from 1st stage turbine wheel blade failure due to type 1 hot corrosion (sulfidation). Contributing factors were the pilot's failure to brief the passengers on emergency safety equipment (life raft), the pilot's…NTSB LAX03GA001Accident · Serious injuriesFinal reportMcDonnell Douglas 600N · Rialto, CAan engine deceleration event due to a loose HMU fuel line fitting, which was a result of inadequate maintenance procedures in the 100/300-hour inspection. Also causal was the flying pilot's and pilot-in-command's delayed recognition of the power loss, as well…
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