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 LAX93LA057Accident · 2 fatalLimited investigationFinal reportHughes 369B · Fallbrook, CAThat the pilot misjudged the distance of the high tension wires from the helicopter.NTSB LAX93LA044Accident · No injuriesLimited investigationFinal reportHughes 369D · Carlsbad, CAFailure of the overrunning clutch assembly bearing for undetermined reasons.NTSB MIA93WA068Accident · Minor injuriesForeign investigationHughes 369D · Buenos Aires, ArgentinaNTSB ANC92LA178Accident · Minor injuriesLimited investigationFinal reportHughes 369D · George Inlet, AKThe pilot's improper in flight planning and decision and his failure to maintain altitude during the turn to reverse direction. Contributing to the accident was the calm water.NTSB ANC92FA164Accident · 3 fatalField investigationFinal reportMcdonnell Douglas 369D · Eagle, AKAn inflight fatigue failure and separation of a main rotor blade, inadequate operator maintenance and inspection, and material defect.NTSB ANC92FA159Accident · Serious injuriesField investigationFinal reportHughes 369D · Nunavaugaluk Lk, AKThe separation of the tail rotor abrasion strip and the subsequent total loss of the tail rotor. Factors contributing to the accident were: insufficient manufacturer's maintenance design changes, inadequate aircraft equipment design by the manufacturer and…NTSB LAX92GA347Accident · 1 fatalFinal reportHughes 369D · Maxwell, CAThe failure of the pilot to maintain an adequate visual outlook, and failure of the company to provide adequate training. Contributing to the accident was: inadequate company supervision during the operation, and inadequate surveillance by the FAA which…NTSB ANC92LA090Accident · No injuriesLimited investigationFinal reportMcDonnell Douglas MD-500D · Polk Inlet, AKThe pilot's failure to follow proper procedure and the company's inadequate procedures and directives. A factor was the uneven terrain.NTSB LAX92T#A03Accident · No injuriesClass 3Final reportMcdonnell Douglas 369D · Mesa, AZNTSB BFO92FA022Accident · 1 fatalField investigationFinal reportHughes 369D · Edison, NJThe blockage of the fuel nozzle which resulted in partial loss of engine power. Contributing was the pilot's failure to maintain rotor RPM.NTSB CHI92LA017Accident · No injuriesLimited investigationFinal reportMcdonnell Douglas MD369D · Beech Grove, INImproper installation of the flight control linkage during maintenance. Complacency and inadequate inspection of the helicopter by maintenance personnel and the pilot are factors in the accident.NTSB ANC91LA146Accident · No injuriesLimited investigationFinal reportHughes 369D · Iliamna, AKWas fuel exhaustion due to the pilot-in-command's improper preflight planning. Contributing to the accident was the rough and uneven tundra landing site.NTSB LAX91LA289Accident · No injuriesLimited investigationFinal reportHughes 369D · Napa, CAThe pilot's failure to maintain the proper altitude. Contributing to the accident was the pilot's improper in flight decision to fly in the below VFR weather conditions and his misjudged weather evaluation.NTSB MIA91TL#04Accident · No injuriesClass 3Final reportHughes 369D · Fort Lauderdale, FLNTSB LAX91T#A09Accident · Serious injuriesClass 3Final reportHughes 369 · Hilo, HINTSB LAX91LA058Accident · Minor injuriesLimited investigationFinal reportMcdonnell Douglas 369D · Keanae, HIFuel starvation caused by a loose fuel line 'b' nut, due to improper maintenance; and the failure of the pilot to correctly judge the landing flare during the autorotation.NTSB LAX91LA054Accident · 1 fatalLimited investigationFinal reportMcdonnell Douglas 369D · Haleakla Nat Pk, HIFuel starvation due to the unporting of the fuel supply pick-up.NTSB SEA91LA023Accident · No injuriesLimited investigationFinal reportHughes 369D · Mulina, ORIn-flight collision with a rebounding long-line, which caused main-rotor RPM decay and tail-boom separation, compromising the pilot's ability to successfully accomplish an attempted autorotation.NTSB ANC91FA001Accident · Serious injuriesField investigationFinal reportHughes 500D · Kennsington, AKThe loss of control during takeoff due to dynamic rollover. Contributing to the accident was the pilot-in-command's selection of an uneven landing area.NTSB LAX90LA303Accident · No injuriesLimited investigationFinal reportHughes 369D · Santa Monica, CAThe pilot's decision to exit the helicopter with the engine running and no one at the controls.NTSB SEA90LA135Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Toutle, WAThe pilot's improper planning/decision by operating and maneuvering the heliocpter in a regime where he could not maintain rotor RPM. The high density altitude and rough terrain were related factors.NTSB LAX90FA230Accident · No injuriesField investigationFinal reportHughes 369D · Hanapepe, HIFailure of pilot of the photographing helicopter to maintain clearance and avoid collision.NTSB SEA90LA081Accident · 1 fatalLimited investigationFinal reportHughes 369D · Kelso, WAFailure of the pilot to keep the external load clear of obstacles (trees). Factors related to the accident were: failure of the pilot and ground crewman to follow safety procedures, and the proximity of the trees.NTSB SEA90LA023Accident · No injuriesLimited investigationFinal reportHughes 369D · Stayton, ORThe maintenance personnel failed to record the previous flight time for the overrunning clutch on airworthiness certification documents when the assembly was overhauled. Also, causal to the accident was the operation of the aircraft by the operator for 175…NTSB LAX90LA033Accident · 1 fatalLimited investigationFinal reportMcDonnell Douglas 369 · Barstow, CAImproper planning/decision by the pilot, and his delay in jettisoning the load.NTSB SEA90LA010Accident · No injuriesLimited investigationFinal reportHughes 369D · Neah Bay, WAFatigue failure of all four attachment studs of the tailrotor gearbox resulting in separation of the gear box, and inadequate maintenance inspection.NTSB SEA90FA005Accident · 1 fatalField investigationFinal reportHughes 369D · Bothell, WAThe pilot failed to determine weather conditions before the flight, his attempt to fly VFR in IMC, and his failure to maintain obstacle clearance altitude. Factors in the accident were the low ceiling, rain and fog weather conditions.NTSB SEA89LA170Accident · No injuriesLimited investigationFinal reportHughes 369D · Petersburg, AKThe pilot failed to obtain clearance over trees. Contributing to the accident was: the aircraft being above its maximum certificated gross weight limitation and the trees.NTSB BFO89LA055Accident · Serious injuriesLimited investigationFinal reportHughes 500D · Williamson, WVPilot's failure to see and avoid the wire which crossed the end of the field in which he was taking off.NTSB LAX89LA141Accident · No injuriesLimited investigationFinal reportHughes 369D · Vallejo, CAFatigue failure of a defective pc tube assembly resulting in a loss of engine power. A contributing factor was the unsuitable terrain.NTSB ANC88LA086Accident · No injuriesLimited investigationFinal reportHughes 369D · Kitoi Bay, AKThe helicopter landed with the left skid against a survey stake which protruded from the ground about 6 inches. Upon liftoff the skid did not clear the metal stake before the helicopter started moving laterally to the left. The left skid remained against the…NTSB MIA88LA198Accident · No injuriesLimited investigationFinal reportHughes 369D · Horn Lake, MSBfr tkof, the helicopter was svcd with 100LL fuel (an approved altn fuel if the boost pump is used in flt). Drg flt, theeng lost pwr. An autorotation was made in tall vegetation, but drg the lndg, the main rotor blades severed the tail boom. An inspn of the…NTSB LAX88LA179Accident · Serious injuriesLimited investigationFinal reportMcDonnell Douglas 369D · Waialua, HIFailure to follow procedures established by the manufacture for uncommanded trim inputs and his decision to make a hover approach to landing.NTSB NYC88LA083Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Waterfall, PAShortly after takeoff, the pilot heard a loud 'boom' and experienced a loss of tail rotor control accompanied by an increase in N2 and RPM. A radio transmission was made to the aircraft that was trailing and then an approach for landing set up. On landing,…NTSB LAX88LA095Accident · No injuriesLimited investigationFinal reportHughes 369D · Rialto, CANTSB LAX88LA043Accident · No injuriesLimited investigationFinal reportHughes 369D · Honolulu, HIThe plt rprtd that during an external load operation, the helicopter ran out of fuel. Subsequently, it was damaged when it touched down hard during a forced landing.NTSB LAX88LA025Accident · No injuriesLimited investigationFinal reportMcdonnell Douglas 369D · Borrego Springs, CAThe pilot and three passengers were flying at low altitude over mountainous terrain looking for big horn sheep. Thirty minutes into the flight the pilot heard a loud noise and the tail yawed left. The pilot turned away from the mountain to look for a place to…NTSB SEA87FA194Accident · Minor injuriesField investigationFinal reportHughes 369D · Seattle, WAThe plt rprtd that while he was in cruise flight at about 1000', the eng lost power. He initiated an autorotation to an athletic field in a city park. Drg his apch, he changed his planned touchdown point svrl times due to personnel on the field. He said that…NTSB SEA87FA162Accident · 2 fatalField investigationFinal reportHughes 369D · Ketchikan, AKN58318 (Hughes 369, under contract with us geological survey) was inbnd fm se to lnd at Ketchikan-temsco heliport (6Z4) as N73WS (Cessna 185 amphibian) was depg se fm Ketchikan intl arpt (ktn). Ktn & 6Z4 were located in tongass narrows withmtns NE & sw. Rprtd…NTSB LAX87LA199Accident · 2 fatalLimited investigationFinal reportHughes 369D · TamuningsA Hughes 369D, operated off of a fishing vessel, went out of control and crashed in the pacific ocean, nr guam. The accident was witnessed by the ship's captain. His statement indicated one of the main rotor blades separated in flt while the helo was orbiting…NTSB SEA87LA074Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Forks, WADuring external load operation the aircraft's engine ceased operating. The helicopter was too close to the ground for recovery. The helicopter descended, struck the ground hard and then rolled over onto its right side. Water in the fuel was discovered after…NTSB LAX87LA140Accident · No injuriesLimited investigationFinal reportHughes 269D · Palmdale, CADuring an external load operation, the engine lost power. The aircraft collided with the terrain and rolled over. Inspection of the engine revealed an overtemperature to the first and second stage turbine wheel airfoils.NTSB LAX87FA112Accident · 1 fatalField investigationFinal reportHughes 369D · Honolulu, HIDrg tkof clb, a loud noise occurred as 1 of 5 main rotors (mrb's) & the tail boom sepd fm the helicopter (hel). The hel then crashed & hit a submerged reef aprx 200' fm the heliport. An exam of the failed mrb showed its retention strap assy(rsa), pn…NTSB LAX87LA099Accident · No injuriesLimited investigationFinal reportHughes 369D · Lemon Cove, CAThe plt rprtd that while at 100 to 150 ft AGL on an apch to land, the eng lost pwr as though it had flamed out. He entered an autorotation, but was unable to reach the helipad. Subsequently, the helicopter landed in trees & was badly dmgd. Drg the…NTSB BFO87DHD02Accident · No injuriesFinal reportHughes 369D · Newark, DEThe acft was being flown on a maintenance check flt. As the plt was returning to land, the eng lost power from fuel exhaustion. During an autorotative landing, the main rotor blades & tail boom were extensively damaged. The plt rprtd the fuel quantity gage…NTSB SEA87LA025Accident · No injuriesLimited investigationFinal reportHughes 369D · Winlock, WAThe plt was loading xmas trees from a farm to a truck. He had just released a load and was en route back to the pickup area when the empty long-line sling contacted treetops. The sling rebounded into the tail rotor & damaged the gear box which resulted in…NTSB SEA87LA007Accident · No injuriesLimited investigationFinal reportHughes 500-D · Seattle, WADuring a practice autorotation a loss of power occurred. The pilot attempted engine recovery but was unable to resulting in a hard landing in which the main rotor blade flexed, severing the tail boom. The throttle linkage on the pilots side was found to have…NTSB FTW86LA041Accident · Minor injuriesLimited investigationFinal reportHughes 369D · New Boston, TXThe pilot experienced a tail rotor drive shaft flexible coupling failure when he pulled collective pitch to come to a hover before landing. The helicopter entered an uncontrollable right spin. During his haste to get the helicopter on the ground the pilot…NTSB LAX86LA043Accident · No injuriesLimited investigationFinal reportHughes 369D · Kunia, Oahu, HIWhile cruising the plt detected a loss of engine power & elected to make a precautionary landing. During landing flare engine power was lost & the acft touched down hard & with excessive ground speed. Exam of the acft's fuel control valve governor failed to…NTSB LAX85LA403Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Porterville, CAAfter climbing to a cruise alt of 13500 ft MSL to cross the sierra Nevada mountains, south of mt whitney, the plt entered cruise flt at an indicated airspeed of aprx 120 to 130 KTS. The plt's flt manual lists 110 KTS as the velocity velocity to never exceed…