NTSB investigations: Hughes Helicopters HUGHES 369D
272 cases on aircraft the registry lists as Hughes Helicopters HUGHES 369D. 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.
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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.aircraft_model_code IN ('4470706'))
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.aircraft_model_code IN ('4470706'))
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 SEA01TA143Accident · No injuriesFinal reportBoeing Helicopters Div. H500D · Union Gap, WAThe complete loss of engine power at cruise for undetermined reasons. Factors include a landing area that was restricted/confined due to adjacent trees, and an intentional abrupt flare resulting in a hard landing.NTSB IAD01TA051Accident · Minor injuriesFinal reportHughes 369D · Taylorsville, KYthe flight instructor's inadequate aircraft control during a practice autorotation which resulted in a hard landing.NTSB CHI01LA119Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Du Quoin, ILloss of engine power for undetermined reasons, the pilot operating the helicopter outside of the height-velocity curve, and the pilot's failure to maintain control of the helicopter during the emergency landing. Factors relating to the accident were the…NTSB FTW01LA073Accident · No injuriesLimited investigationFinal reportHughes 369D · Canadian, TXthe helicopter's encounter with loss of tail rotor effectiveness while hovering out-of-ground effect, and the pilot's failure to maintain control. A contributing factor was the soft terrain condition.NTSB LAX01LA079Accident · No injuriesLimited investigationFinal reportHughes 369D · Ely, NVThe mechanic's inadvertent activation of the bleed valve, which resulted in a loss of engine oil and loss of engine power while in cruise flight.NTSB DEN01TA019Accident · No injuriesFinal reportHughes 369D · Montrose, COthe foreign object damage to a main rotor blade, while maneuvering.NTSB LAX00FA123Accident · Serious injuriesField investigationFinal reportBoeing 369D · Rough And Ready, CAa loss of engine power due to oil starvation. The oil starvation was due to the seizure and failure of the turbine element oil pump shaft, which was caused by debris from a failed bearing seizing the pump. A factor in the accident was the lack of a suitable…NTSB IAD00WA004Accident · 2 fatalForeign investigationHughes 369D · Cologne, GermanyNTSB LAX99LA245Accident · No injuriesLimited investigationFinal reportHughes 369D · Oakdale, CAThe disintegration and failure of the oil pump drive spur gear aft bearing, which resulted in failure of the oil pump and subsequent oil starvation to the engine's turbine module. A factor in the accident was the failure of company maintenance personnel to…NTSB SEA99LA092Accident · No injuriesLimited investigationFinal reportHughes 369D · Shelton, WAThe pilot's failure to maintain rotor RPM during an autorotation.NTSB SEA99LA082Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Southbend, WAThe complete loss of power, due to a failure of the compressor impeller disk. Factors include the low altitude of the helicopter at the time of the power loss, and the need to autorotate in a confined area.NTSB LAX99TA088Accident · No injuriesFinal reportMcDonnell Douglas 369D · Las Vegas, NVThe pilot's failure to properly judge the landing flare maneuver during a practice autorotative landing resulting in a hard landing.NTSB DEN99TA031Accident · No injuriesFinal reportHughes 369D · Woodruff, UTA partial loss of engine power due to erosion in the compressor assembly module. Factors were a missing rotating labyrinth seal, the installation of which had not been performed by unknown maintenance personnel.NTSB SEA99FA018Accident · Minor injuriesField investigationFinal reportHughes 369D · Taholah, WATurbine wheel failure as the result of a low-cycle fatigue crack that initiated in a beyond-limits grinding gouge. Factors include improper maintenance by unknown parties and tree stumps that prohibited a successful emergency landing.NTSB ANC98TA162Accident · Serious injuriesFinal reportHughes 369D · Homer, AKThe passenger not following the instructions given by the pilot. Contributing factors were the rising terrain and the pilot's diverted attention during the toe in landing.NTSB SEA98LA160Accident · Minor injuriesLimited investigationFinal reportMcDonnell Douglas 369D · Oso, WAThe separation of the 90 degree gearbox and tail rotor assembly for undetermined reasons followed by the inability of the pilot-in-command to maintain control of the rotorcraft.NTSB SEA98LA128Accident · 1 fatalLimited investigationFinal reportHughes 369D · Raymond, WAThe use of the improper long-line cable by the ground crew, and its subsequent separation from the helicopter.NTSB LAX98LA079Accident · 1 fatalLimited investigationFinal reportHughes 369D · Pacific Ocean (Pacific Ocean)The pilot's failure to adequately compensate for the wind condition and failure to maintain a proper rate of descent which resulted in the inadvertent loss of tail rotor effectiveness during a downwind turn.NTSB SEA97LA118Accident · No injuriesLimited investigationFinal reportHughes 369D · Moclips, WAInadequate installation of the fuel control by company maintenance personnel and a loose nut on a line. A disconnected Pc line was a factor.NTSB LAX97LA176Accident · 2 fatalLimited investigationFinal reportHughes 369D · Puako, HIerosion of second stage stator vanes, inadequate maintenance inspection for the erosion, and subsequent fatigue failure of a stator vane, which resulted in loss of engine power and a forced landing on mountainous/hilly terrain. Also causal was: the pilot's…NTSB LAX97FA107Accident · Serious injuriesField investigationFinal reportHughes 369D · Milolii, HIfailure of the tail rotor for undetermined reason(s), resulting in tail rotor imbalance, separation of the tail rotor, and an autorotative landing on rough terrain with high vegetation. The lack of suitable terrain for a forced landing was a related factor.NTSB LAX97GA105Accident · 1 fatalFinal reportMcDonnell Douglas 369D · Santee, CASpatial disorientation and temporary visual impairment that led to a loss of aircraft control as result of difficulty to light adaptivity. Contributing was the crew coordination and inadequate night flight recurrency training.NTSB SEA97LA032Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Forks, WAfuel contamination, which resulted in loss of engine power. Factors relating to the accident included: improper servicing of the helicopter, and a lack of suitable terrain for an emergency landing due to the proximity of trees.NTSB LAX97LA039Accident · No injuriesLimited investigationFinal reportMcDonnell Douglas 369D · Hana, HIsubsequent failure of the spur adapter gearshaft (SAG), after 'retaining ring to compressor impeller machining' occurred and allowed the SAG to shift aft. The mechanism which induced the ring to impeller machining was not determined. Mountainous terrain in…NTSB ANC96LA111Accident · Minor injuriesLimited investigationFinal reportMcDonnell Douglas MD369D · Healy, AKThe inadequate visual outlook by the pilots of both aircraft, and their failure to see and avoid the other aircraft. A factor associated with the accident was sunglare affecting the helicopter pilot's vision.NTSB SEA96LA144Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Mcminnville, ORimproper maintenance (replacement) and inspection of the engine fuel governor by company maintenance personnel, the pilot's inadequate preflight inspection, and a subsequent disconnect of the adjustable governor lever control rod, which disabled the engine…NTSB ANC96TA092Accident · No injuriesFinal reportHughes 369D · Ketchikan, AKThe pilot's failure to maintain control of the helicopter. The pilot's selection of unsuitable terrain for landing was a factor in the accident.NTSB ANC96LA045Accident · Minor injuriesLimited investigationFinal reportMcDonnell Douglas H-369 · Delta Junction, AKloss of engine power for an undetermined reason.NTSB CHI96FA091Accident · 2 fatalField investigationFinal reportHughes 369D · Dweese, NEthe pilot's improper in-flight planning and decision, and his lack of total experience in the type of operation. A factor was the crosswind.NTSB LAX96FA076Accident · 1 fatalField investigationFinal reportHughes 369D · Feather Falls, CAthe pilot's failure to jettison his external load after it came in contact with trees and terrain. The pilot's failure to maintain altitude/clearance above trees and hilly terrain was a related factor.NTSB SEA96LA025Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Scotts Mills, ORThe pilot's failure to maintain adequate clearance from the ground.NTSB LAX95GA264Accident · 3 fatalFinal reportMcdonnell Douglas 369D · Hauula, HIthe pilot's poor judgement by intentionally flying into adverse weather conditions in mountainous terrain with an external load and no observer which resulted in loss of aircraft control. Factors were pressure from the conditions/events and a lack of total…NTSB ANC95LA107Accident · No injuriesLimited investigationFinal reportHughes 500D · Paxson, AKFuel starvation due to acrylamide contamination in the fuel control inlet filter. The lack of suitable terrain for a forced landing was a related factor.NTSB LAX95FA225Accident · Serious injuriesField investigationFinal reportHughes 369D · Highland, CAthe pilot's failure to verify the security of his passenger's cargo/personal belongings which departed the aircraft striking the tailrotor.NTSB LAX94LA387Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Pacific Ocean (Pacific Ocean)failure of the helicopter's main rotor pitch change link (control rod). The helicopter was not recovered and the Safety Board was unable to determine the pitch change link's failure mode.NTSB LAX94FA372Accident · Minor injuriesField investigationFinal reportHughes 369D · Genoa, NVThe pilot/operator's operation of the helicopter with a disconnected throttle on the right collective; the FAA inspector's inadequate preflight/pretakeoff checks of the flight control/throttle systems; and the pilot/operator's failure to adequately inform the…NTSB BFO94LA155Accident · No injuriesLimited investigationFinal reportHughes 369D · Butler, PAThe malfunction of the emergency fuel vent and the exhaustion of the fuel supply which resulted in the loss of engine power.NTSB LAX94LA241Accident · No injuriesLimited investigationFinal reportHughes 369D · Kaneohe, HIthe operator's and pilot's failure to ensure that the cargo net containing empty paper bags was sufficiently ballasted to prevent it from flying up into the tail rotor.NTSB LAX94FA197Accident · 1 fatalField investigationFinal reportHughes 369D · Hanapepe, HIInadequate turbine engine compressor cleaning procedures based on information in the manufacturer's service letter, and loss of engine power due to blockage of the fuel nozzle strainer with foreign material (sodium). Factors related to the accident were: the…NTSB SEA94LA094Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Rimrock, WAFuel exhaustion, the pilot in command's failure to refuel the aircraft, and the inability to successfully execute an auto- rotation landing because of the low altitude.NTSB LAX94LA174Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Hi. Nat'L Park, HIthe pilot's in-flight decision to maneuver the helicopter close to an active volcano steam vent which resulted in a whiteout condition from the steam, and the pilot's subsequent loss of visual contact with the ground.NTSB MIA94T#A02Accident · No injuriesClass 3Final reportHughes 369E · Scotts Ferry, FLNTSB LAX94LA076Accident · No injuriesLimited investigationFinal reportHughes 369D · Waimea, Kauai, HIAn inadequate engine compressor cleaning procedure specified in the manufacturer's service letter, which resulted in the total loss of engine power due to contamination, blockage, and collapse of the fuel nozzle inlet screen. Factors in the accident were: the…NTSB LAX94LA041Accident · 2 fatalLimited investigationFinal reportHughes 369D · Pacific Ocean (Pacific Ocean)An undetermined event that resulted in the accident.NTSB LAX93LA323Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Chico, CAthe observer's failure to properly secure stowed items in the rear compartment prior to takeoff and the resultant foreign object damage to the tail rotor system which precluded the pilot from maintaining directional control.NTSB ANC93LA125Accident · No injuriesLimited investigationFinal reportHughes 369D · Cordova, AKA loss of engine power for undetermined reasons. A factor was the rough/uneven terrain.NTSB LAX93LA261Accident · 1 fatalLimited investigationFinal reportMcdonnell Douglas 369D · Half Moon Bay, CAthe pilots failure to maintain an adequate clearance from the light tower and associated electrical power cables. Factors in the accident were; 1) pilot fatigue due to an excessively long duty day, and 2) glare from the lights which affected the pilot's…NTSB LAX93LA249Accident · No injuriesLimited investigationFinal reportHughes 369D · Kahului, HIThe failure of the pilot to maintain adequate ground obstruction clearance while engaged in a cattle herding operation.NTSB LAX93LA132Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Kahului, HIThe pilots failure to maintain an adequate visual lookout for obstructions while performing a low altitude surveillance operation in a mountainous area, and, his failure to select an altitude sufficient to ensure clearance from all potential obstacles.NTSB LAX93LA071Accident · No injuriesLimited investigationFinal reportHughes 369D · Hilo, HIThe bearing failures due to the operator's use of improper maintenance inspection and overhaul procedures by installing an unserviceable compressor module in the helicopter engine. Factors in the accident were the unsuitable nature of the terrain for the…