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NTSB investigations: Hughes Helicopters HUGHES 369D, AK

29 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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19802026

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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.aircraft_model_code IN ('4470706')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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.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."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.aircraft_model_code IN ('4470706'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run 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 ANC13LA074Accident · No injuriesClass 3 · LimitedFinal reportHughes 500D · Delta Junction, AKA total loss of engine power for undetermined reasons, which necessitated an emergency hovering autorotation, during which the helicopter impacted trees and terrain.Aug 6, 2013 · N134SH · Substantial damage NTSB ANC11IA059Incident · No injuriesIncident investigationFinal reportHughes 500D · McGrath, AKA fatigue fracture of the governor-to-fuel control Pc line, which resulted in a partial loss of engine power.Jul 5, 2011 · N315SH · Minor damage NTSB ANC07LA022Accident · No injuriesLimited investigationFinal reportHughes 369D · Gustavus, AKThe inadequate clearance from a tranquilized moose while hovering in ground effect, and the operator's inadequate procedures for such operations, which resulted in an in-flight collision with the moose. Factors associated with the accident were the moose, a…Mar 3, 2007 · N5134V · Substantial damage NTSB ANC03LA082Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Ketchikan, AKThe improper installation of a bolt in the gas generator governor linkage by company maintenance personnel, which resulted in a loss of the bolt, a loss of engine power while maneuvering, and subsequent forced landing and collision with trees. Factors…Jul 21, 2003 · N1091S · Substantial damage 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.Sep 27, 1998 · N1091P · Minor damage 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.Aug 4, 1996 · N58269 · 2 aircraft · No damage 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.Jun 26, 1996 · N5125Q · Substantial damage NTSB ANC96LA045Accident · Minor injuriesLimited investigationFinal reportMcDonnell Douglas H-369 · Delta Junction, AKloss of engine power for an undetermined reason.Apr 6, 1996 · N58268 · Substantial damage 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.Jul 18, 1995 · N8639F · Substantial damage NTSB ANC93LA125Accident · No injuriesLimited investigationFinal reportHughes 369D · Cordova, AKA loss of engine power for undetermined reasons. A factor was the rough/uneven terrain.Jul 24, 1993 · N3115Y · Substantial damage NTSB 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.Sep 25, 1992 · N58315 · Substantial damage 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.Sep 11, 1992 · N1096X · Destroyed 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…Sep 9, 1992 · N8697F · Substantial damage 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.Jun 10, 1992 · N8395F · Substantial damage 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.Sep 11, 1991 · N29JV · Substantial damage 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.Oct 4, 1990 · N1107G · Substantial damage 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.Sep 9, 1989 · N1088N · Substantial damage 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…Jul 9, 1988 · N1089D · Substantial damage 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…Aug 12, 1987 · N58318 · 2 aircraft · Destroyed NTSB SEA84LA134Accident · No injuriesLimited investigationFinal reportHughes 369D · Wrangell, AKThe helicopter was parked with the eng running when it was struck by another acft, a Beech C-45G. Prior to the collision, the helicopter was at a low RPM; therefore, the plt was unable to move the helicopter out of the way. The Beech acft was being taxied…Jun 16, 1984 · N5133U · Substantial damage NTSB ANC83LA138Accident · No injuriesLimited investigationFinal reportHughes 369D · Mcgrath, AKThe plt stated that he was flying straight & level at aprx 700 ft AGL, when the eng-out light illuminated. He began an autorotation to a ridgeline. During the landing, the main rotor blades contacted the tail boom & severed it from the main fuselage. An…Aug 5, 1983 · N1106Z · Substantial damage NTSB ANC83LA076Accident · No injuriesLimited investigationFinal reportHughes 500D · Cantwell, AKThe helicopter skid contacted the ground during a hovering turn for landing and rolled the helicopter over on its right side. The pilot had made an approach for landing to a 10 foot hover and then lost sight of his reference point in fresh snow picked up by…Apr 29, 1983 · N58229 · Substantial damage NTSB SEA82FA070Accident · Minor injuriesField investigationFinal reportHughes 369D · 6nm Sse Wrangel, AKThe pilot reported that the aircraft was on a reconnaissance flight to survey a proposed powerline project. He reported that during the flight, the engine flamed out and an autorotation was initiated. He maneuvered the helicopter to land in a clearance, but…May 13, 1982 · N1107T · Substantial damage NTSB ANC81FA100Accident · Minor injuriesClosedHughes 369D · Lk Minchumina, AKAug 27, 1981 · N8363F · Destroyed NTSB ANC81DAD05Accident · No injuriesClosedHughes 369D · Swan Lake, AKAug 15, 1981 · N8348F · Destroyed NTSB ANC81FA082Accident · Minor injuriesClosedHughes 369D · Umiat, AKJul 21, 1981 · N8366F · Substantial damage NTSB ANC81FA064Accident · Minor injuriesClosedHughes 369D · Tanacross, AKJun 19, 1981 · N11035 · Substantial damage NTSB ANC81FA055Accident · Minor injuriesClosedHughes 369D · Glennallen, AKMay 25, 1981 · N211EH · Substantial damage NTSB ANC80DA068Accident · No injuriesClosedHughes 369B · Chokosna, AKJul 12, 1980 · N8363F · Substantial damage