# 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 2 of 6 · 272 cases ## Cases, newest first - [NTSB WPR13CA057](https://openairdocs.org/ntsb/WPR13CA057.md): Hughes 369D · Sheridan, OR · Accident · Minor injuries · Data collection · Final report · Nov 27, 2012 · N163PJ · Substantial damage > The pilot’s failure to prevent the helicopter from entering a vortex ring state (settling with power) condition during an external load operation, which resulted in the helicopter’s main rotor blades impacting the truck. - [NTSB CEN13FA075](https://openairdocs.org/ntsb/CEN13FA075.md): Hughes 369 · Childress, TX · Accident · 1 fatal · Field investigation · Final report · Nov 27, 2012 · N28MP · Substantial damage > The improper maintenance of the helicopter fuel system that resulted in erroneous fuel gauge indications and the pilot’s inadequate fuel management, both of which resulted in fuel exhaustion during a long-line hover. Also causal was the lack of company… - [NTSB ERA13LA057](https://openairdocs.org/ntsb/ERA13LA057.md): Hughes 369D · Corning, NY · Accident · 2 fatal · Limited investigation · Final report · Nov 15, 2012 · N369AW · Substantial damage > The pilot’s failure to maintain adequate altitude while conducting a power line aerial observation flight, which resulted in an in-flight collision with wires. Contributing to the accident was the pilot’s lack of total experience in the type of operation. - [NTSB ERA12LA260](https://openairdocs.org/ntsb/ERA12LA260.md): Hughes 369D · McCormick, SC · Accident · Minor injuries · Limited investigation · Final report · Mar 30, 2012 · N868W · Substantial damage > The pilot's decision to use automotive fuel instead of the approved alternate fuel, which resulted in a total loss of engine power. - [NTSB ERA12CA119](https://openairdocs.org/ntsb/ERA12CA119.md): Hughes 369D · Fall Branch, TN · Accident · No injuries · Data collection · Final report · Dec 21, 2011 · N500TN · Substantial damage > The pilot's improper decision to continue a visual flight into instrument meteorological conditions, which resulted in a wire strike. - [NTSB WPR12LA022](https://openairdocs.org/ntsb/WPR12LA022.md): Mcdonnell Douglas 500D · Colusa, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 27, 2011 · N61PJ · Substantial damage > A total loss of engine power while maneuvering at low altitude for reasons that could not be determined because postaccident examinations did not reveal any anomalies that would have precluded normal operation. Contributing to the accident severity was the… - [NTSB ANC11IA059](https://openairdocs.org/ntsb/ANC11IA059.md): Hughes 500D · McGrath, AK · Incident · No injuries · Incident investigation · Final report · Jul 5, 2011 · N315SH · Minor damage > A fatigue fracture of the governor-to-fuel control Pc line, which resulted in a partial loss of engine power. - [NTSB CEN11GA218](https://openairdocs.org/ntsb/CEN11GA218.md): Hughes 369D · Meeker, CO · Accident · Minor injuries · Final report · Mar 8, 2011 · N131AL · Substantial damage > Main rotor contact with the tail boom resulting in tail boom separation. - [NTSB CEN11LA200](https://openairdocs.org/ntsb/CEN11LA200.md): Hughes 369D · Henryetta, OK · Accident · No injuries · Limited investigation · Final report · Feb 23, 2011 · N112AS · Substantial damage > Failure of the cyclic control system for reasons undetermined. - [NTSB WPR11LA048](https://openairdocs.org/ntsb/WPR11LA048.md): MD Helicopter 369D · Salem, OR · Accident · Serious injuries · Limited investigation · Final report · Nov 15, 2010 · N155PH · Substantial damage > The pilot’s failure to maintain clearance between the longline and trees, which resulted in the longline snagging a tree and then recoiling into the main rotor blades and a subsequent loss of helicopter control. - [NTSB WPR10GA102](https://openairdocs.org/ntsb/WPR10GA102.md): Hughes 369D · Kooskia, ID · Accident · Serious injuries · Final report · Jan 8, 2010 · N500LW · Substantial damage > A complete loss of engine power due to the failure of the No. 2 bearing, which was precipitated by electrical arcing that occurred at an unknown time prior to the accident flight. - [NTSB ERA10LA053](https://openairdocs.org/ntsb/ERA10LA053.md): Hughes 369 · Baxley, GA · Accident · No injuries · Limited investigation · Final report · Nov 6, 2009 · N89ZC · Substantial damage > A loss of engine power due to fuel starvation resulting from the pilot’s inadequate preflight inspection of the main fuel valve position. - [NTSB ERA09FA414](https://openairdocs.org/ntsb/ERA09FA414.md): Hughes 369 · Franklin, PA · Accident · 1 fatal · Field investigation · Final report · Jul 22, 2009 · N61735 · Substantial damage > A loss of engine power due to fuel exhaustion as a result of the pilot's fuel mismanagement. - [NTSB ERA09LA317](https://openairdocs.org/ntsb/ERA09LA317.md): Hughes 369D · Greenville, VA · Accident · Serious injuries · Limited investigation · Final report · Jun 2, 2009 · N8356F · Substantial damage > The inadequate design of the fourth-stage turbine wheel, resulting in the fatigue failure of one airfoil and a subsequent loss of engine power. - [NTSB ERA09LA194](https://openairdocs.org/ntsb/ERA09LA194.md): Hughes 369D · Lee, MA · Accident · Serious injuries · Limited investigation · Final report · Mar 10, 2009 · N369RT · Substantial damage > The pilot's failure to maintain clearance from the overhead wire. - [NTSB WPR09LA144](https://openairdocs.org/ntsb/WPR09LA144.md): MD Helicopter 369D · Trona, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 7, 2009 · N501EF · Substantial damage > The pilot's failure to maintain control while landing in a high density altitude environment due to a loss of tail rotor effectiveness. - [NTSB ERA09LA031](https://openairdocs.org/ntsb/ERA09LA031.md): Hughes 369D · Carroll Township, PA · Accident · Serious injuries · Limited investigation · Final report · Oct 30, 2008 · N606AS · Substantial damage > A total loss of engine power due to the improper assembly of the compressor discharge tubes to the combustion liner. - [NTSB SEA08TA188](https://openairdocs.org/ntsb/SEA08TA188.md): Hughes 369D · Bonners Ferry, ID · Accident · No injuries · Final report · Aug 18, 2008 · N622PB · Substantial damage > The pilot's inadequate preflight planning for the takeoff and the helicopter loading that exceeded the lift performance capability of the helicopter. - [NTSB LAX08FA233](https://openairdocs.org/ntsb/LAX08FA233.md): Hughes 369D · Price, UT · Accident · 3 fatal · Field investigation · Final report · Jul 19, 2008 · N400BE · Destroyed > The pilot's inadequate preflight performance planning for the takeoff and the loading that exceeded the lift performance capability of the helicopter. - [NTSB LAX07LA270](https://openairdocs.org/ntsb/LAX07LA270.md): Hughes 369D · Ellensburg, WA · Accident · 1 fatal · Limited investigation · Final report · Sep 8, 2007 · N31HM · No damage > The 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 factor - [NTSB SEA07TA212](https://openairdocs.org/ntsb/SEA07TA212.md): Hughes 369D · Omak, WA · Accident · No injuries · Final report · Jul 22, 2007 · N69PF · Substantial damage > The 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 CHI07LA193](https://openairdocs.org/ntsb/CHI07LA193.md): Hughes 369D · Comfrey, MN · Accident · No injuries · Limited investigation · Final report · Jul 5, 2007 · N500NC · Substantial damage > The loss of engine power due to the loose pressure line during aerial application maneuvers which resulted in a hard forced landing. - [NTSB SEA07LA147](https://openairdocs.org/ntsb/SEA07LA147.md): Hughes 369D · Troy, OR · Accident · Serious injuries · Limited investigation · Final report · Jun 6, 2007 · N48MP · No damage > The inadvertent entanglement of the crewmemeber's helmet's communication cord with the structure of the helicopter during the helicopter's ascent, which resulted in the crewmember being elevated above ground level before the helmet's cord separated, resulting… - [NTSB SEA07CA139](https://openairdocs.org/ntsb/SEA07CA139.md): Hughes 369D · Torrance, CA · Accident · No injuries · Data collection · Final report · May 29, 2007 · N935M · Substantial damage > The pilot's loss of helicopter control while maneuvering at low altitude, which resulted in a hard landing. The wind gusts were a contributing factor. - [NTSB SEA07LA135](https://openairdocs.org/ntsb/SEA07LA135.md): Hughes 369D · Columbus, MT · Accident · 1 fatal · Limited investigation · Final report · May 28, 2007 · N765HV · Destroyed > The fatigue failure of a turbine blade due to a localized over-temperature of the turbine section as result of a non-uniform fuel distribution by the fuel nozzle. Contributing to the accident was the close proximity of a power line support structure which… - [NTSB ATL07LA079](https://openairdocs.org/ntsb/ATL07LA079.md): Hughes 369D · Whiteville, NC · Accident · Minor injuries · Limited investigation · Final report · Apr 24, 2007 · N11AS · Substantial damage > A partial loss of engine power due to fatigue fracture of the power turbine governor spring, causing a false pneumatic signal to the fuel control and a corresponding reduction in fuel flow. - [NTSB SEA07LA108](https://openairdocs.org/ntsb/SEA07LA108.md): Hughes 369D · Kahuku, HI · Accident · Minor injuries · Limited investigation · Final report · Apr 20, 2007 · N911FT · Substantial damage > Fatigue cracking of the oil line from the engine gearbox to the oil pressure gauge, which resulted in loss of engine lubricating oil, leading to seizure of the power turbine. - [NTSB ANC07LA022](https://openairdocs.org/ntsb/ANC07LA022.md): Hughes 369D · Gustavus, AK · Accident · No injuries · Limited investigation · Final report · Mar 3, 2007 · N5134V · Substantial damage > The 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… - [NTSB LAX06LA288](https://openairdocs.org/ntsb/LAX06LA288.md): Hughes 369D · Somis, CA · Accident · 2 fatal · Limited investigation · Final report · Sep 6, 2006 · N812CE · Substantial damage > The pilot's inadequate visual lookout, which resulted in a collision with wires. - [NTSB LAX06TA259](https://openairdocs.org/ntsb/LAX06TA259.md): Hughes 369D · Lahaina, HI · Accident · No injuries · Final report · Aug 13, 2006 · N114HD · Substantial damage > the pilot's failure to shut down the engine prior to exiting the helicopter resulting in the tail rotor contacting the ground. A contributing factor was the gusting wind conditions present at the accident site. - [NTSB SEA06LA135](https://openairdocs.org/ntsb/SEA06LA135.md): Hughes 369D · Moab, UT · Accident · No injuries · Limited investigation · Final report · Jun 30, 2006 · N369PB · Substantial damage > The failure of the collective bungee support bracket due to non-compliance with a service information notice, which resulted in the pilot executing a precautionary autorotative landing. A contributing factor was the lack of suitable terrain for the landing. - [NTSB SEA06LA124](https://openairdocs.org/ntsb/SEA06LA124.md): Hughes 369D · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Jun 20, 2006 · N88SE · Substantial damage > A loss of rotor rpm for undetermined reasons, resulting in a hard landing on top of the commercial building over which the helicopter was working. - [NTSB LAX06LA015](https://openairdocs.org/ntsb/LAX06LA015.md): Hughes 369D · Avalon, CA · Accident · Serious injuries · Limited investigation · Final report · Oct 19, 2005 · N268ST · Substantial damage > the pilot's failure to maintain an adequate visual lookout and obstacle clearance altitude, which resulted in a collision with power lines. Factors in the accident were the position of the sun relative to the helicopter's flight path, which lessoned the… - [NTSB LAX06IA011](https://openairdocs.org/ntsb/LAX06IA011.md): Hughes 369D · Kahului, HI · Incident · No injuries · Incident investigation · Final report · Oct 14, 2005 · N58267 · Minor damage > The fatigue cracking and failure of the tail rotor control rod during cruise flight, which resulted in a hard landing during the precautionary landing. - [NTSB LAX05CA263](https://openairdocs.org/ntsb/LAX05CA263.md): Hughes 369D · North Las Vegas, NV · Accident · No injuries · Data collection · Final report · Aug 8, 2005 · N58431 · Substantial damage > the pilot's improper use of the cyclic flight control and the flight instructor's inadequate supervision of the flight. - [NTSB DFW05FA032](https://openairdocs.org/ntsb/DFW05FA032.md): Hughes 369D · Zachary, LA · Accident · Serious injuries · Field investigation · Final report · Dec 9, 2004 · N7148Z · Substantial damage > The loss of engine power as a result of fatigue cracking of the compressor adaptor coupling initiated by fretting on the pilot diameter and subsequent disconnection of the compressor from the turbine assembly. A contributing factor was the low operating… - [NTSB ATL04LA181](https://openairdocs.org/ntsb/ATL04LA181.md): Hughes HU-369-D · Waynesboro, GA · Accident · Minor injuries · Limited investigation · Final report · Sep 10, 2004 · N5211R · Substantial damage > The tail rotor assembly failed due to a fatigue fracture of the input gearshaft in the tail rotor gearbox assembly, which resulted in a loss of tail rotor control and subsequent collision with trees. - [NTSB SEA04LA181](https://openairdocs.org/ntsb/SEA04LA181.md): Hughes 369D · Cottage Grove, OR · Accident · No injuries · Limited investigation · Final report · Sep 4, 2004 · N505ST · Substantial damage > In-flight loss of engine power during cruise for undetermined reasons. - [NTSB LAX04LA116](https://openairdocs.org/ntsb/LAX04LA116.md): Hughes 369D · Wahiawa, HI · Accident · No injuries · Limited investigation · Final report · Dec 18, 2003 · N1113L · Substantial damage > The pilot's failure to properly secure the external sling load, which allowed the load to shift, and subsequently strike and remove the tail rotor. - [NTSB ANC03LA082](https://openairdocs.org/ntsb/ANC03LA082.md): Hughes 369D · Ketchikan, AK · Accident · Minor injuries · Limited investigation · Final report · Jul 21, 2003 · N1091S · Substantial damage > The 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… - [NTSB LAX03LA212](https://openairdocs.org/ntsb/LAX03LA212.md): Hughes 369D · Kualapuu, HI · Accident · Serious injuries · Limited investigation · Final report · Jun 26, 2003 · N633WA · Substantial damage > the total loss of engine power resulting from a fatigue failure of the 3rd stage turbine wheel airfoils. The reason for the airfoil's fatigue failure could not be determined. - [NTSB SEA03LA058](https://openairdocs.org/ntsb/SEA03LA058.md): Hughes 369D · Taholah, WA · Accident · Minor injuries · Limited investigation · Final report · Apr 7, 2003 · N5225C · Substantial damage > The 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 SEA03LA021](https://openairdocs.org/ntsb/SEA03LA021.md): Hughes 369D · Boise, ID · Accident · No injuries · Limited investigation · Final report · Dec 24, 2002 · N8366F · Substantial damage > The failure of the operator's maintenance personnel to properly rig the left/right seat twistgrip throttles to the engine fuel control, the pilot in command's failure to adhere to the rotorcraft flight manual, and the check pilot's premature flare during the… - [NTSB LAX03LA017](https://openairdocs.org/ntsb/LAX03LA017.md): Hughes 369D · Kaaawa, Oahu, HI · Accident · Serious injuries · Limited investigation · Final report · Oct 29, 2002 · N220AL · Destroyed > Dynamic rollover during an attempted takeoff, due to the combined effects of the soft sloping terrain and the pilot's failure to redistribute the passengers to a more favorable lateral CG condition. - [NTSB CHI02LA285](https://openairdocs.org/ntsb/CHI02LA285.md): Hughes 369D · O'Neill, NE · Accident · Minor injuries · Limited investigation · Final report · Sep 17, 2002 · N500EK · Substantial damage > A loss of engine power due to turbine blade separation as a result of hot corrosion damage to the turbine blades. Contributing to the accident was the pilot misjudging the flare at the completion of the autorotation resulting in a hard landing. The dark night… - [NTSB SEA02LA135](https://openairdocs.org/ntsb/SEA02LA135.md): McDonnell Douglas 369D · Medford, OR · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 2002 · N58295 · Substantial damage > Power loss during cruise flight for undetermined reasons. Factors include mountainous terrain and trees. - [NTSB NYC02TA123](https://openairdocs.org/ntsb/NYC02TA123.md): Hughes 369D · Jeffersontown, KY · Accident · No injuries · Final report · Jun 26, 2002 · N40AP · Substantial damage > The flight instructor's loss of lateral control when his foot slipped off the rudder pedal during a power-off, running landing. - [NTSB SEA02TA067](https://openairdocs.org/ntsb/SEA02TA067.md): Hughes 369D · Richland, WA · Accident · No injuries · Final report · Apr 11, 2002 · N8353F · Substantial damage > Failure of the netting material securing a net weight while maneuvering. The net weight was a factor. - [NTSB LAX02LA007](https://openairdocs.org/ntsb/LAX02LA007.md): Hughes 369D · Kahoolawe Isle, HI · Accident · Serious injuries · Limited investigation · Final report · Oct 10, 2001 · N622WA · No damage > Inadequate visual surveillance by the pilot before takeoff resulting in liftoff with a deplaning passenger still partially aboard the helicopter. A factor in the accident was the operator's inadequate procedures. - [NTSB LAX01LA305](https://openairdocs.org/ntsb/LAX01LA305.md): Hughes 369D · Carlsbad, CA · Accident · No injuries · Limited investigation · Final report · Sep 23, 2001 · N268ST · Substantial damage > A hard landing due to the dual student's failure to maintain main rotor speed, his improper landing flare, and the flight control interference by the flight instructor. Next page: https://openairdocs.org/ntsb.md?model=4470706&page=3 ## 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=2 --- 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.