# NTSB investigations: Hughes Helicopters HUGHES 369D, OR 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. ## Latest cases - [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 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 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 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 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 SEA96LA144](https://openairdocs.org/ntsb/SEA96LA144.md): Hughes 369D · Mcminnville, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 6, 1996 · N5110Y · Substantial damage > improper maintenance (replacement) and inspection of the engine fuel governor by company maintenance personnel, the pilot's inadequate preflight inspection, and a subsequent disconnect of the adjustable governor lever control rod, which disabled the engine… - [NTSB SEA96LA025](https://openairdocs.org/ntsb/SEA96LA025.md): Hughes 369D · Scotts Mills, OR · Accident · Minor injuries · Limited investigation · Final report · Nov 29, 1995 · N64DB · Substantial damage > The pilot's failure to maintain adequate clearance from the ground. - [NTSB SEA91LA023](https://openairdocs.org/ntsb/SEA91LA023.md): Hughes 369D · Mulina, OR · Accident · No injuries · Limited investigation · Final report · Nov 26, 1990 · N1106Z · Substantial damage > In-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 SEA90LA023](https://openairdocs.org/ntsb/SEA90LA023.md): Hughes 369D · Stayton, OR · Accident · No injuries · Limited investigation · Final report · Nov 29, 1989 · N446TN · Substantial damage > The 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 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 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 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 SEA81DYK02](https://openairdocs.org/ntsb/SEA81DYK02.md): Hughes 369 · Powers, OR · Accident · Minor injuries · Closed · Dec 15, 1980 · N8607F · Substantial damage - [NTSB SEA80FYM54](https://openairdocs.org/ntsb/SEA80FYM54-202528.md): Hughes 369D · Bay City, OR · Accident · Minor injuries · Closed · Jul 25, 1979 · N58184 · Substantial damage - [NTSB SEA79FYM48](https://openairdocs.org/ntsb/SEA79FYM48-202537.md): Hughes 369D · Cascadia, OR · Accident · Serious injuries · Closed · Aug 14, 1978 · N8600F · Destroyed ## 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."eventStateOrRegion" = 'OR' 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 ``` This list as a web page: https://openairdocs.org/ntsb?model=4470706&state=OR --- 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.