JASC 6320
Service difficulty reports · 1,930
Reports filed under 6320 · Main Rotor Gearbox, newest first.
Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE jasc_code = '6320' ORDER BY difficulty_date 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 sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE jasc_code = '6320' ORDER BY difficulty_date 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.
SDR HCM2002F00001Warning Light · illuminatedWHILE ON A SIGHTSEEING FLIGHT, PILOT EXPERIENCED A MAIN GEARBOX CHIP LIGHT INDICATION. THE PILOT MADE A PRECAUTIONARY LANDING. UPON INSPECTION OF THE MAIN GEARBOX CHIP PLUGS BY MAINTENANCE PERSONNEL, NO METAL WAS FOUND. CLEANED MAGNETIC CHIP PLUGS AND CONNESDR CA020715009Transmission · making metal(CAN) ONE CHIP LIGHT OCCURRENCE. CHIP PLUG AND FILTER INSPECTED AND AN EXCESSIVE AMOUNT OF MAGNETIC PARTICLES WERE FOUND. THE FILTER HAD BEEN INSPECTED 10 HRS PREVIOUSLY. THIS FAILURE IS USUALLY INDICATIVE OF A FAILED INPUT QUILL.SDR CA020718001Transmission · making metal(CAN) WHILE IN NORMAL CRUISE CONFIGURATION "MAIN TRANSMISSION" LIGHT ILLUMINATED. PILOT ACTIVATED PULSE CHIP DETECTOR SYSTEM AND LIGHT EXTINQUISHED. THE LIGHT RE-ILLUMINATED APPROX. 1.5 HOURS LATER. THE PILOT ONCE AGAIN ACTIVATED THE PULSE CHIP. DETECTOR SYSTESDR KBMA117648Support · wornTRANSMISSION MOUNT MAKES CLICKING SOUND. RIGHT SIDE, BEARING WAS WORN BEYOND LIMITS. REPLACED WITH NEW SUPPORT AND BEARING.SDR HEEA080287Thermoswitch · malfunctionedTRANS OIL TEMP CAUTION LIGHT CAME ON WITH TEMP IN THE MIDDLE OF OPERATING RANGE. REPLACED WITH SERVICEABLE PART.SDR HEEA080167Case · crackedINDICATIONS FOUND ON WEBS DURING NDT INSPECTION OF CASE. TO BE SENT TO VENDOR.SDR HEEA080138Filter · bypassingC-BOX BYPASS FILTER BUTTON POPPED. SCRAPPED FILTER.SDR HEEA080136Fitting · damagedSUSPECT THAT COMBINING GEARBOX IS TRANSFERRING TO THE NR 1 ENGINE. SCRAPPED FITTING DUE TO GOUGHES ON FITTING FLARES.SDR HEEA080131Indicator · reads lowINDICATOR READS 3 PSI LOW. REPLACED WITH SERVICEABLE INDICATOR.SDR HEEA080126Link · wornLIFT LINK ASSY WORN. REPLACED WITH SERVICEABLE PART.SDR 2002FA0000862Oil Filter · mismanufacturedMAIN GEAR BOX OIL FILTER USED ON CERTAIN A/C HAVE A TAB TACK WELDED TO THE FILTER CASING SO SAFETY WIRE CAN BE ATTACHED. ON 5/30/02, 3 OF THESE FILTER HAD THE SAFETY WIRE TABS FALL OFF BEFORE THE FILTERS WERE INSTALLED. MFG WAS NOTIFIED OF THIS PROBLEM.SDR AUS20020649Bearing · failed(AUS) MAIN ROTOR TRANSMISSION OUTPUT SHAFT BEARING DISINTEGRATED. TAILROTOR DRIVESHAFT TWISTED UP AT TRANSMISSION END.SDR HEEA080095Valve · malfunctionedWHEN ENGINES ARE REDUCED TO IDLE TRANSMISSION OIL PRESSURE DROPS BELOW LOW RED AND TRANSMISSION OIL PRESSURE LIGHT ILLUMINATES. ADVANCING EITHER ENGINE TO 70 PERCENT N1 RESTORES PRESSURE TO NORMAL RANGE. WHEN OIL PRESSURE RELIEF VALVE WAS REMOVED IT WAS FOUNSDR HEEA080082Bearing · roughOIL COOLER BLOWER BEARING ROUGH.SDR HEEA080081Bearing · roughOIL COOLER BLOWER BEARING ROUGH.SDR HEEA079763Seal · leakingMAIN ROTOR GEARBOX OUTPUT DRIVE SEAL LEAKING. SCRAPPED.SDR HEEA079762Seal · leakingMAIN ROTOR GEARBOX OUTPUT DRIVE SEAL LEAKING. REPLACED WITH SERVICEABLE PART.SDR CA020611003Valve Seat · failed(CAN) DURING THE SCHEDULED 25 HOUR INSPECTION THE AME NOTED THAT THE VALVE SEAT HAD UNSCREWED ITSELF FROM THE FILTER BODY AND DAMAGED THE FILTER, WAFER. THE VALVE SEAT WAS SECURED AND THE FILTER, WAFER WAS REPLACED.SDR HEEA079614Tube · chafedMAIN ROTOR GEARBOX TUBE IS CHAFED. REPLACED WITH SERVICEABLE TUBE.SDR HEEA079612Gearbox · making metalMAIN ROTOR GEARBOX MAKING METAL.SDR HEEA079611Case · corrodedRUST FOUND IN TOP OPENING OF M/R GEARBOX CASE.SDR HEEA079327Screw · corrodedMAIN ROTOR GEARBOX LUBE OIL PUMP ADJUSTMENT SCREW CORRODED.SDR B3OR20020012Pulley · scoredAIRCRAFT WAS IN FOR 500 HOUR INSPECTION. WHILE INSPECTING THE MAIN GEAR BOX COUPLING THAT DRIVES THE HYDRAULIC PUMP VIA A BELT AND PULLEY, THE PULLEY SURFACE WHERE THE BELT CONTACTS IT WAS FOUND TO BE UNUSUALLY ROUGH. THE BELT WAS ALSO INSPECTED AND FOUND TO SDR HEEA079556Line · chafedMAIN ROTOR LINE CHAFED. REPLACED WITH SERVICEABLE PART.SDR HEEA079555Line · crackedMAIN ROTOR GEARBOX HAS A CRACKED LINE. REPAIRED LINE.SDR HEEA079540Bearing · wornMAIN ROTOR GEARBOX LIFT LINK ASSY HAS WORN BEARINGS. REPLACED WITH SERVICEABLE PART.SDR HEEA079427Filter · bypassingENGINE OIL FILTER BYPASSED AFTER FILTER CHANGE.SDR HEEA079539Link · damagedTRANSMISSION LIFT LINK HAS AN UNSTAKED BEARING. REPLACED WITH SERVICEABLE PART.SDR HEEA079538Link · wornTRANSMISSION CASE LIFT LINK HAS WORN BEARINGS. REPLACED WITH SERVICEABLE PART.SDR HEEA079423Quill Assy · leakingMAIN ROTOR GEARBOX QUILL ASSY LEAKING. REPLACED WITH SERVICEABLE PART.SDR HEEA079422Quill Assy · leakingMAIN ROTOR GEARBOX QUILL ASSY LEAKING. REPLACED WITH SERVICEABLE PART.SDR HEEA079421Seal · leakingMAIN ROTOR GEARBOX QUILL ASSY SEAL LEAKING. REPLACED WITH SERVICEABLE PART.SDR HEEA079420Pressure Switch · damagedWORKING RIVETS ON CONNECTOR END OF THE GEARBOX PRESSURE SWITCH. SCRAPPED.SDR HEEA079419Pressure Switch · failedTRANSMISSION OIL PRESSURE LIGHT WILL NOT COME ON AFTER SHUTDOWN. SCRAPPED AND REPLACE PRESSURE SWITCH.SDR HEEA079385Pump · leakingMAIN ROTOR OIL PUMP LEAKING. REPLACED WITH SERVICEABLE PUMP.SDR PHA2002F00000Lockwasher · crackedDURING 100 HOUR INSPECTION CLUTCH (PN 369A5350-51) WAS REMOVED FOR SERVICE. LOCK WASHER (PN369A5358) WAS FOUND TO HAVE CRACKED IN 3 PLACES, THIS ALLOWED THESE FRAGMENTS TO SLING OUT FROM THE CLLUTCH WHICH TURNS AT 6200 RPM AND RIDE AGAINST THE INTERIOR OF THSDR CA020621010Bearing · failed(CAN) SUMP CHIP INDICATION DURING GROUND RUN PRIOR TO FLIGHT. METAL CONTAMINATION OF INTERNAL FILTER AND SUMP CHIP PLUG.TRANSMISSION REMOVED FROM SERVICE, TEARDOWN CARRIED OUT. HYDRAULIC QUILL DUPLEX BEARING IDENTIFIED AS SOURCE OF METAL GENERATION.SDR HEEA079090Line · crackedCRACKED LINE. REPLACED WITH SERVICEABLE PART.SDR KBMA113856Isolation Mount · debondedISOLATION MOUNT DEBONDED. REPLACED WITH SERVICEABLE UNIT.SDR ERAA079872Gear · failedINSPECTION OF PLANETARY SYSTEM FOR BREAKDOWN. UPPER PLANETARY - BROKEN CAGE, SAME GEAR HAS SCORED ROLLER SET. REMOVED TOP CASE, REMOVED UPPER & LOWER PLANETARY AND ASSOCIATED GEARS. DISASSEMBLED, INSPECTED FOR BREAKDOWN, DETAILS ON BLUE FORMS ; FOUND NO BRSDR HEEA078842Pump · leakingTRANSMISSION OIL PUMP LEAKING PAST INTERNAL SEAL.SDR HEEA078802Thermoswitch · damagedMAIN ROTOR GEARBOX THERMOSWITCH DAMAGED, STUD TURNS FREELY IN HOUSING.SDR CA020507009Mount · cracked(CAN) DURING MAIN ROTOR TRANSMISSION REMOVAL FOUND CRACK EXTENDING FROM LOWER MOST BOLT HOLE OF 5TH MOUNT ATTACHMENT ANGLE, RT SIDE OF TRANSMISSION PYLON AREA.CRACK REPAIRED I.A.W. THE BELL MEDIUM STRUCTURAL REPAIR MANUAL (BHT-MED-SRM-1) SECTION 4-6-3, "MAIN BSDR XG3R085945Fitting · leakingRETURN FITTING LEAKING. BEVEL ON FITTING HAS INCREASED RADIUS. REPLACED OIL COOLER.SDR HEEA078547Gearbox · making metalCHIP LIGHT. 3 FLAKES IN LOWER PLUG. CHIP LIGHT DURING PENALTY RUN. FLAKES AND BRASS IN FILTER.SDR ERAA078465Transmission · making metalTRANSMISSION IS MAKING METAL. ACCESSORY T/R INPUT QUILL BEARING SET, ROLLERS & RACES MAKING METAL. ACTION TAKEN: CHANGED SUMP CASE, ASSY/ INPUT DRIVE QUILL. C/W 3100 HOUR INSPECTION. REPLACED MAIN INPUT PINION AND ALL BRGS. CLEANED AND FLUSHED ALL OIL PASDR CA020507023Bearing · spalled(CAN) REMOVED FOR METAL CONTAMINATION. DISASSEMBLED OUTER RACE OF BEARING AND IT SHOWS SIGNS OF EXCESSIVE PEELING 14.5 MM BY 78 MM,AREA 1131 SQ MM.SDR CA020507024Bearing · peeling(CAN) THIS TRANSMISSION RECEIVED FROM THE USA. REMOVED DUE TO METAL CONTAMINATION. ROLLER BEARING OUTER RACE SHOWED SIGNS OF EXCESSIVE PEELING. DAMAGE AREA 11 MM LONG BY 50 MM WIDE.SDR CA020430011Bearing · failed(CAN) INFLIGHT ILLUMINATION OF TRANSMISSION OIL PRESSURE LIGHT, CONFIRMED BY VISUAL INDICATION OF LOW OIL PRESSURE INDICATION (40PSI). EMERGENCY PROCEDURES INITIATED, PRESSURE INDICATION WENT TO ZERO AFTER A FURTHER 6 MINS OF FLIGHT. EMERGENCY LANDING CARRIED SDR ALG2002F00030Gear · roughUPON VISUAL INSPECTION OF PARTS. T/M GEAR HAS ROUGH GEAR TEETH EDGES AT RADIUS CAUSING LIGHT GALLING ON PINION GEAR. PTO GEAR ALSO HAS ROUGH EDGES AT RADIUS. ASSURE PROPER MATERIAL, MACHINING AND MESHING OF GEAR TEETH AT FACTORY.
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