NTSB investigations: Hughes Helicopters HUGHES 369D, WA
36 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.
Cases per year
| 1977 | 1 |
|---|---|
| 1979 | 1 |
| 1981 | 1 |
| 1982 | 1 |
| 1983 | 1 |
| 1984 | 2 |
| 1985 | 2 |
| 1986 | 2 |
| 1987 | 2 |
| 1989 | 2 |
| 1990 | 2 |
| 1994 | 1 |
| 1996 | 1 |
| 1997 | 1 |
| 1998 | 3 |
| 1999 | 2 |
| 2001 | 1 |
| 2002 | 1 |
| 2003 | 1 |
| 2007 | 2 |
| 2014 | 1 |
| 2015 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2021 | 1 |
Where
Open the mapLatest cases
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_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\" = 'WA' 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" = 'WA' 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" 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 WPR21LA084Accident · No injuriesClass 4 · LimitedFinal reportHughes 369D · Winthrop, WAThe pilot’s failure to adequately monitor the environment which resulted in a collision with a snowbank and subsequent loss of control.NTSB WPR19LA249Accident · No injuriesClass 3 · LimitedFinal reportHughes 369 · Asotin, WAA loss of control for undetermined reasons.NTSB WPR18FA074Accident · 1 fatalField investigationFinal reportHughes 369D · Pomeroy, WAA loss of control following the gunner's failure to ensure that the net maintained clearance from the tail rotor.NTSB WPR16LA032Accident · No injuriesLimited investigationFinal reportHughes 369D · Carlisle, WAA total loss of engine power during cruise flight due to fuel exhaustion. Contributing to the accident was the improper calibration of the fuel quantity gauge.NTSB WPR16LA021Accident · No injuriesLimited investigationFinal reportMD Helicopter 369D · Sedro-Woolley, WAThe loss of engine power due to fuel starvation as a result of naphthenate fuel contamination, which blocked the fuel flow through the start pump.NTSB WPR14LA308Accident · Serious injuriesLimited investigationFinal reportMdhi 369D · Oso, WAThe pilot/mechanic’s failure to properly perform required inspections of the main rotor blades at the necessary intervals, which resulted in an in-flight separation of a main rotor blade due to disbonding and fatigue cracking. Contributing to the accident was…NTSB LAX07LA270Accident · 1 fatalLimited investigationFinal reportHughes 369D · Ellensburg, WAThe passenger's inadequate visual lookout and failure to maintain clearance from the rotating main rotor disc while the helicopter was hovering. An uphill terrain condition was a factorNTSB SEA07TA212Accident · No injuriesFinal reportHughes 369D · Omak, WAThe pilot's failure to maintain clearance from the surface of a pond that he was using as a water bucket refill site, which resulted in a tail rotor strike to the water's surface and a torsional overload failure of the tail rotor drive shaft.NTSB SEA03LA058Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Taholah, WAThe entanglement of the fuel quantity sender float in the start pump wiring within the fuel tank as a result of the wiring not being properly secured. This rendered the fuel gauge inaccurate and the low fuel warning light inoperative which led to fuel…NTSB SEA02TA067Accident · No injuriesFinal reportHughes 369D · Richland, WAFailure of the netting material securing a net weight while maneuvering. The net weight was a factor.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 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 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 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 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 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 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 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 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 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 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 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 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 SEA85FA104Accident · 2 fatalField investigationFinal reportHughes 369D · Spokane, WAThe 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 SEA85LA053Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Taholah, WAThe 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 SEA85LA017Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Humptulips, WAWhen 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 SEA84LA083Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Kent, WAThe 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 SEA83LA205Accident · Minor injuriesLimited investigationFinal reportHughes 369B · Cougar, WAThe 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 SEA82DA137Accident · No injuriesFinal reportHughes 369D · Shelton, WADuring 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 SEA81DYP37Accident · No injuriesClosedHughes 369D · Leavenworth, WANTSB SEA79FYP17Accident · Minor injuriesClosedHughes 369D · Spokane, WANTSB SEA78DYP03Accident · No injuriesClosedHughes 369D · Spokane, WA