# NTSB investigations: Hughes Helicopters HUGHES 369D NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 5 of 6 · 272 cases ## Cases, newest first - [NTSB SEA85FA104](https://openairdocs.org/ntsb/SEA85FA104.md): Hughes 369D · Spokane, WA · Accident · 2 fatal · Field investigation · Final report · May 5, 1985 · N8365F · Destroyed > The helicopter was on a flt to a tv station to transport a tv camera man & his gear. The regular plt for this trip was unable to fly, so another was retained for the flt. This was his 1st flt to the station. Helicopter operations at the tv station were… - [NTSB LAX85FJA03](https://openairdocs.org/ntsb/LAX85FJA03.md): Hughes 369D · Hilo, HI · Accident · No injuries · Final report · Feb 15, 1985 · N58395 · Substantial damage > The helicopter tail boom was damaged by the main rotor blades during a forced autorotative landing. The plt reported that shortly after takeoff at an alt of 4500 ft MSL, the eng N2 dropped to 92% and aprx 15 seconds later, the eng flamed out. Investigation… - [NTSB LAX85FA136](https://openairdocs.org/ntsb/LAX85FA136.md): Hughes 369D · Hilo, HI · Accident · 1 fatal · Field investigation · Final report · Feb 6, 1985 · N369LA · Substantial damage > A search was initiated when the helicopter did not arrive. It was fnd 2 days later where it crashed drg an autorotation in a rain forest. Drg the flare/touchdown, vegetation had caught on a tundra pad on the l skid & the acft rolled over. An exam revealed the… - [NTSB SEA85LA053](https://openairdocs.org/ntsb/SEA85LA053.md): Hughes 369D · Taholah, WA · Accident · Minor injuries · Limited investigation · Final report · Feb 4, 1985 · N8306F · Destroyed > The acft had lifted off during an external load operation when the plt felt a 'vibration/shudder'. The right skid contacted the ground and the helicopter rolled over during an attempt to maneuver the helicopter away from ground personnel. Inspection revealed… - [NTSB LAX85LA116](https://openairdocs.org/ntsb/LAX85LA116.md): Hughes 369D · Makakilo, HI · Accident · Minor injuries · Limited investigation · Final report · Jan 19, 1985 · N211EH · Destroyed > On an air taxi flt, after landing at a prearranged site the plt signaled to his 3 pax to board the helicopter. As the pax attempted to board from the right side of the acft, the rotor blades went out of track/phase. The acft began uncontrollable bouncing up… - [NTSB SEA85LA020](https://openairdocs.org/ntsb/SEA85LA020.md): Hughes 369D · Kings Valley, OR · Accident · Minor injuries · Limited investigation · Final report · Nov 16, 1984 · N58256 · Destroyed > The plt attempted to fly the acft away from the site of a proposed load drop before the drop was completed. The FAA inspectors said the sling did not release properly. When the plt attempted to depart the area the acft struck the groundin a nose low attitude.… - [NTSB SEA85LA017](https://openairdocs.org/ntsb/SEA85LA017.md): Hughes 369D · Humptulips, WA · Accident · Minor injuries · Limited investigation · Final report · Nov 13, 1984 · N1096L · Destroyed > When the hoisting cable on the helicopter failed, the hook end rebounded into the rotor system. The rotor system failed from the structural damage imposed and the acft went into an uncontroled descent impacting the ground on the left skid. - [NTSB MIA85FA012](https://openairdocs.org/ntsb/MIA85FA012.md): Hughes 369D · St.Thomas · Accident · 3 fatal · Field investigation · Final report · Oct 19, 1984 · N8631F · Destroyed > The acft was flying at 50 feet above the water at 15 knots airspeed photographing a sail boat. The acft then climbed to 150 feet and drifted left over the top of the boat. At this point witnesses reported hearing a loud pop and seeing a puff of black smoke… - [NTSB LAX84FA405](https://openairdocs.org/ntsb/LAX84FA405.md): Hughes 369D · Mesa, AZ · Accident · 2 fatal · Field investigation · Final report · Jul 18, 1984 · N58369 · Destroyed > The helicopter experienced a main rotor drive system disconnect, an uncontrolled descent & subsequent inflight collision with terrain in a hilly desert area. This was the third & last in a planned series of marketing demo flts conducted for three USMC… - [NTSB ATL84FA218](https://openairdocs.org/ntsb/ATL84FA218.md): Hughes 369D · Franklin, TN · Accident · Serious injuries · Field investigation · Final report · Jul 10, 1984 · N52934 · Destroyed > The acft landed hard & rolled over during an emergency autorotation lndg after the acft eng experienced a flame-out. Theacft had experienced a low fuel warning light earlier in the flt and the plt had made a precautionary lndg after which he and the passenger… - [NTSB SEA84LA134](https://openairdocs.org/ntsb/SEA84LA134.md): Hughes 369D · Wrangell, AK · Accident · No injuries · Limited investigation · Final report · Jun 16, 1984 · N5133U · Substantial damage > The 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… - [NTSB NYC84LA204](https://openairdocs.org/ntsb/NYC84LA204.md): Hughes 500D · Bedford, PA · Accident · No injuries · Limited investigation · Final report · Jun 7, 1984 · N5106Y · Substantial damage > According to the plt, the helicopter took off with under 200 lbs of fuel indicating on the fuel gage. Fifteen minutes after takeoff at 125 ft AGL the engine out warning system indicated an engine failure. The acft began to rotate about its vetical axis and… - [NTSB LAX84LA314](https://openairdocs.org/ntsb/LAX84LA314.md): Hughes 369D · Honolulu, HI · Accident · No injuries · Limited investigation · Final report · May 25, 1984 · N211EH · Substantial damage > The helicopter experienced a tail rotor failure shortly after departing the airport on a VFR local sling loading flt. The plt stated that, 'at approx 500 ft asl on climb out experienced sudden, severe vibration. Made a 180 degree turn to return to airport &… - [NTSB FTW84LA217](https://openairdocs.org/ntsb/FTW84LA217.md): Hughes 500D · New Braunfels, TX · Accident · No injuries · Limited investigation · Final report · May 2, 1984 · N5063G · Substantial damage > Despite adverse wx which forced the plt to stop once enroute to his dest the flt was continued. Directional control was lost when the tail rotor contacted the terrain separating both tail rotor blades from the acft and torsionally shearing the tail rotor… - [NTSB DEN84FA142](https://openairdocs.org/ntsb/DEN84FA142.md): Hughes 369D · Meeker, CO · Accident · Serious injuries · Field investigation · Final report · May 2, 1984 · N1090A · Substantial damage > During slow (35-40 KTS) cruise flt at about 50 ft AGL in mountainous terrain for wildlife survey, pwr loss occurred. Auto systems briefly restored pwr, followed by a ttl loss. Plt executed emergency autorotation into trees on sloping terrain. Investigation… - [NTSB SEA84LA083](https://openairdocs.org/ntsb/SEA84LA083.md): Hughes 369D · Kent, WA · Accident · Minor injuries · Limited investigation · Final report · Apr 14, 1984 · N1092L · Substantial damage > The plt requested clearance to transit the seattle tca for a landing at Boeing field. He was advised of a DC-10 departing the seattle-tacoma intl arpt & was cautioned about possible wake turbulence. The DC-10 passed the helicopter with about 1 1/2 mi lateral… - [NTSB CHI83LA448](https://openairdocs.org/ntsb/CHI83LA448.md): Hughes 369D · Indianapolis, IN · Accident · No injuries · Limited investigation · Final report · Sep 30, 1983 · N5127X · Substantial damage > While the helicopter was cruising at about 500 ft AGL, the eng lost power. The plt turned into the wind & made an autorotative landing in a corn field. During the landing, the tail boom was severed by the main rotor blades. An exam revealed that the housing… - [NTSB SEA83LA205](https://openairdocs.org/ntsb/SEA83LA205.md): Hughes 369B · Cougar, WA · Accident · Minor injuries · Limited investigation · Final report · Sep 26, 1983 · N10966 · Destroyed > The aircraft collided with trees and terrain during a forced landing attempt following an in-flight power loss. Subsequent engine teardown revealed failure of several components. - [NTSB DEN83FA215](https://openairdocs.org/ntsb/DEN83FA215.md): Hughes 369D · Woodruff, UT · Accident · Minor injuries · Field investigation · Final report · Sep 12, 1983 · N8667F · Substantial damage > The helicopter was being used to lift seismic materials on a 100 ft long line. After lifting the load to a hover at about 10 to 20 ft, the plt heard a loud 'bang' which was followed by a loss of directional control. The helicopter began uncontrolled spinning… - [NTSB FTW83LA421](https://openairdocs.org/ntsb/FTW83LA421.md): Hughes 500D · Portales, NM · Accident · No injuries · Limited investigation · Final report · Sep 1, 1983 · N277SP · Substantial damage > The plt landed at Portales, NM with about 7 gal of jet fuel remaining in the fuel tank. Since jet fuel was not available, he added 15 gal of 100 low lead avgas, which was an approved alternate fuel. Shortly after taking off, the eng flamed out & the plt was… - [NTSB ANC83LA138](https://openairdocs.org/ntsb/ANC83LA138.md): Hughes 369D · Mcgrath, AK · Accident · No injuries · Limited investigation · Final report · Aug 5, 1983 · N1106Z · Substantial damage > The 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… - [NTSB ANC83LA076](https://openairdocs.org/ntsb/ANC83LA076.md): Hughes 500D · Cantwell, AK · Accident · No injuries · Limited investigation · Final report · Apr 29, 1983 · N58229 · Substantial damage > The 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… - [NTSB SEA82DA137](https://openairdocs.org/ntsb/SEA82DA137.md): Hughes 369D · Shelton, WA · Accident · No injuries · Final report · Aug 7, 1982 · N10966 · Substantial damage > During a sight seeing flight the pilot smelled a burning odor and prepared to make a precautionary off-airport landing. Shortly thereafter, engine RPM decayed and an autorotative landing was effected on a dirt road. On touchdown, the main rotor blades flexed… - [NTSB SEA82DA119](https://openairdocs.org/ntsb/SEA82DA119.md): Hughes 369D · Creswell, OR · Accident · No injuries · Final report · Jul 20, 1982 · N8694F · Substantial damage > The pilot was practicing hovering autorotations and quick stops. He stated that after about six good quick stops, he made a tail low landing and the main rotor blades flexed into the tail boom. - [NTSB FTW82DA195](https://openairdocs.org/ntsb/FTW82DA195.md): Hughes 500D · Amarillo, TX · Accident · No injuries · Final report · May 27, 1982 · N277SP · Substantial damage > The pilot reported that he was practicing autorotations. When he added power to recover from his eighth autorotation, he experienced compressor stalls in the engine and a complete loss of power at about 20 ft AGL. The helicopter settled and made a hard… - [NTSB CHI82DA185](https://openairdocs.org/ntsb/CHI82DA185.md): Hughes 369D · Fairbury, IL · Accident · No injuries · Final report · May 26, 1982 · N8348F · Substantial damage > During flight, the N2 and nr suddenly accelerated to 110 percent. The pilot eventually shut down the engine and made an autorotation. An open field was selected for a landing site; however, it was muddy with standing water. The pilot decided on a full stop… - [NTSB SEA82FYM16](https://openairdocs.org/ntsb/SEA82FYM16.md): Hughes 369D · Birkenfeld, OR · Accident · Minor injuries · Final report · May 19, 1982 · N1096L · Substantial damage > The pilot stated that the fuel gauge indicated 150 lbs of fuel remaining when he began the flight. Since the drop point was within 2 to 3 minutes of the departure point, he elected to proceed without refueling. While hovering and being guided into the drop… - [NTSB SEA82FA070](https://openairdocs.org/ntsb/SEA82FA070.md): Hughes 369D · 6nm Sse Wrangel, AK · Accident · Minor injuries · Field investigation · Final report · May 13, 1982 · N1107T · Substantial damage > The 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… - [NTSB LAX82FUJ40](https://openairdocs.org/ntsb/LAX82FUJ40.md): Hughes 369D · Teec Nos Pos, AZ · Accident · Serious injuries · Final report · Apr 28, 1982 · N1089S · Substantial damage > The acft lost eng power & crashed while attempting an autorotation. Eng teardown revealed that the #2 bearing failed as a result of some of the ball retainers being broken & cracked between the ball pockets. This condition allowed the impeller assembly to… - [NTSB DEN82DA073](https://openairdocs.org/ntsb/DEN82DA073.md): Hughes 369D (500D) · Coalville, UT · Accident · Minor injuries · Final report · Apr 27, 1982 · N8684F · Substantial damage > The helicopter made a hard landing after the pilot experienced a power train failure while flying low and slow. The weather was VMC and a VFR flight plan was filed. The crew was searching for lost mining equipment in a low slow search pattern. The pilot heard… - [NTSB LAX82DUM05](https://openairdocs.org/ntsb/LAX82DUM05.md): Hughes 369 · Winterhaven, CA · Accident · Minor injuries · Closed · Dec 4, 1981 · N58184 · Destroyed - [NTSB FTW82DQD04](https://openairdocs.org/ntsb/FTW82DQD04.md): Hughes 369D · Deming, NM · Accident · No injuries · Closed · Nov 24, 1981 · N1089N · Substantial damage - [NTSB ATL82FKG01](https://openairdocs.org/ntsb/ATL82FKG01.md): Hughes 369D · Savannah, GA · Accident · Serious injuries · Closed · Oct 7, 1981 · N444HM · Substantial damage - [NTSB DEN81FTC26](https://openairdocs.org/ntsb/DEN81FTC26.md): Hughes 369D · Cokeville, WY · Accident · Minor injuries · Closed · Sep 16, 1981 · N1106G · Substantial damage - [NTSB DEN81FA062](https://openairdocs.org/ntsb/DEN81FA062.md): Hughes 369D · Afton, WY · Accident · Minor injuries · Closed · Aug 27, 1981 · N58256 · Substantial damage - [NTSB ANC81FA100](https://openairdocs.org/ntsb/ANC81FA100.md): Hughes 369D · Lk Minchumina, AK · Accident · Minor injuries · Closed · Aug 27, 1981 · N8363F · Destroyed - [NTSB SEA81DYP37](https://openairdocs.org/ntsb/SEA81DYP37.md): Hughes 369D · Leavenworth, WA · Accident · No injuries · Closed · Aug 26, 1981 · N58306 · Substantial damage - [NTSB ANC81DAD05](https://openairdocs.org/ntsb/ANC81DAD05.md): Hughes 369D · Swan Lake, AK · Accident · No injuries · Closed · Aug 15, 1981 · N8348F · Destroyed - [NTSB ANC81FA082](https://openairdocs.org/ntsb/ANC81FA082.md): Hughes 369D · Umiat, AK · Accident · Minor injuries · Closed · Jul 21, 1981 · N8366F · Substantial damage - [NTSB ANC81FA064](https://openairdocs.org/ntsb/ANC81FA064.md): Hughes 369D · Tanacross, AK · Accident · Minor injuries · Closed · Jun 19, 1981 · N11035 · Substantial damage - [NTSB ANC81FA055](https://openairdocs.org/ntsb/ANC81FA055.md): Hughes 369D · Glennallen, AK · Accident · Minor injuries · Closed · May 25, 1981 · N211EH · Substantial damage - [NTSB DEN81FTM20](https://openairdocs.org/ntsb/DEN81FTM20.md): Hughes 369D · Morgan, SD · Accident · Minor injuries · Closed · Apr 26, 1981 · N58283 · Substantial damage - [NTSB ATL81DKW16](https://openairdocs.org/ntsb/ATL81DKW16.md): Hughes 369D · Ashland City, TN · Accident · No injuries · Closed · Apr 13, 1981 · N58221 · Substantial damage - [NTSB LAX81DVA27](https://openairdocs.org/ntsb/LAX81DVA27.md): Hughes 369D · Madera, CA · Accident · No injuries · Closed · Mar 9, 1981 · N8681F · Substantial damage - [NTSB SEA81DYK02](https://openairdocs.org/ntsb/SEA81DYK02.md): Hughes 369 · Powers, OR · Accident · Minor injuries · Closed · Dec 15, 1980 · N8607F · Substantial damage - [NTSB LAX81FA017](https://openairdocs.org/ntsb/LAX81FA017.md): Hughes 369D · Kaaawa, HI · Accident · 1 fatal · Closed · Nov 19, 1980 · N58243 · Destroyed - [NTSB DEN80FTE04](https://openairdocs.org/ntsb/DEN80FTE04-128570.md): Hughes 369D · Alma, CO · Accident · No injuries · Closed · Oct 27, 1980 · N58216 · Substantial damage - [NTSB CHI80DEM44](https://openairdocs.org/ntsb/CHI80DEM44.md): Hughes 500D · Manistee, MI · Accident · No injuries · Closed · Aug 29, 1980 · N500NC · Substantial damage - [NTSB ANC80DA068](https://openairdocs.org/ntsb/ANC80DA068.md): Hughes 369B · Chokosna, AK · Accident · No injuries · Closed · Jul 12, 1980 · N8363F · Substantial damage - [NTSB FTW80FQA36](https://openairdocs.org/ntsb/FTW80FQA36.md): Hughes 369D · Albuquerque, NM · Accident · No injuries · Closed · Jul 7, 1980 · N58431 · Substantial damage Next page: https://openairdocs.org/ntsb.md?model=4470706&page=6 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 ``` This list as a web page: https://openairdocs.org/ntsb?model=4470706&page=5 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.