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.

SDR CA020403009Ring · cracked(CAN) BALANCE RING WAS PARTIALLY CRACKED. (MAIN GEARBOX TORQUE GEAR "BALANCE RING" FOUND CRACKED)Mar 26, 2002 · Bell 206BSDR CA020326008Housing · cracked(CAN) 6 CRACKS WERE NOTED ON AFT END OF OUTER FLANGE UNDERNEATH STUD HOLES. 2 OF CRACKS ARE UNDER STUD HOLES, WHICH WERE NOT INST WITH STUDS (PRE-TAPPED FOR HEAVY RING GEAR; CURRENTLY PLUGGED). CRACKS ARE ABOUT 0.18-0.27 INCHES LONG MEASU RED FROM CRACK CENTEMar 26, 2002 · Skrsky S61ASDR ALG2002F00032Gear · damagedUPON INSPECTION OF PARTS, FOUND ROUGH GEAR TEETH EDGES AT RADIUS, CAUSING DMAGE TO MATING GEAR TEETH. THIS IS DUE TO IMPROPER MACHING AT RADIUS.Mar 25, 2002 · N537AL · Bell 407SDR ALG2002F00031Pinion Gear · spalledUPON INSPECTION OF PART. SPALLING AND GALLING GEAR TEETH DUE TO ROUGH EDGES ON T/M GEAR TEETH. (PN 6893673 SN NN144757) TT 1878.2.Mar 24, 2002 · N537AL · Bell 407SDR BAQ2002F00001Gearbox · making metalMAIN TRANSMISSION CHIP LIGHT ILLUMINATED IN FLIGHT. COMPLIED WITH SERVICEABILITY CHECK FOR MAIN TRANSMISSION. CHIP LIGHT ILLUMINATED AGAIN AFTER SECOND OIL CHANGE, DURING GROUND RUN.Mar 20, 2002 · N109DK · Agusta A109ESDR ALG2002F00027Gear · galledUPON DISASSEMBLY AND INSPECTION OF GEARBOX BEARINGS AND GEARS. FOUND ROUGH SURFACE AT GEAR TEETH EDGE NEAR RADIUS OF TM GEAR, CAUSING GALLING ON PINION GEAR AND METAL CONTAMINATION. ASSURE PROPER MACHINE AND MESHING OF GEAR TEETH AT FACTORY.Mar 18, 2002 · N847AL · Bell 407SDR AUS20020284Gearbox · making metal(AUS) MAIN TRANSMISSION CHIP DETECTOR CONTAMINATED WITH METAL. AMOUNT OF METAL ON DETECTORS WAS BEYOND MANUFACTURERS LIMITS AND THE TRANSMISSION WAS CHANGED.Mar 18, 2002 · Skrsky S76ASDR HEEA078217Pressure Switch · malfunctionedMAIN ROTOR GEARBOX PRESSURE SWITCH HAS NO LIGHT INDICATION ON RUN UP.Mar 11, 2002 · N4999 · Bell 407SDR HEEA078174Pump · leakingEXCESSIVE LEAKAGE ON TRANSMISSION DECK.Mar 7, 2002 · N8595X · Bell 407SDR HEEA078173Indicator · reads lowMGT INDICATOR INDICATES 10 DEGREES LOW.Mar 7, 2002 · N742PH · Bell 407SDR ERAA078421Housing · debonded(2) 1/4 X 28 STUDS PULLED FROM HOUSING. RETURNED FROM OVERHAUL.Feb 27, 2002 · N149EH · Bolkms BO105SSDR CA020307009Insert · leaking(CAN) OIL LEAKING FROM LOWER STARBOARD COMPRESSOR MOUNT INSERT. ENGINE REMOVED, DISASSEMBLED AND GEARBOX SENT TO ENGINE OVERHAUL FACILITY.Feb 26, 2002 · Bell 206BSDR HEEA078090Seal · leakingMAIN ROTOR GEARBOX SEAL IS LEAKING.Feb 26, 2002 · N720PH · Bell 407SDR HEEA078081Bearing · roughCOOLER BLOWER BEARING FEELS ROUGH.Feb 26, 2002 · N501PH · Bell 407SDR HEEA078039Transmission · corrodedMAIN ROTOR GEARBOX TRANSMISSION HAS CORROSION ON SPLIT LINE.Feb 25, 2002 · N721PH · Bell 407SDR HEEA078036Indicator · malfunctionedINTERNAL LIGHT IS TOO WEAK.Feb 25, 2002 · N8595X · Bell 407SDR CA020411004Lock · loose(CAN) AT FREEWHEEL CHANGE LOCKS WERE LOOSE. GEARS WERE REPLACED FOR FURTHER INSPECTION IN SHOP. PARTS WERE REMOVED FROM MAIN GEARBOX.Feb 21, 2002 · Skrsky S61NSDR ERAA077924Housing · brokenAUX JET HOUSING CRACKED, HOUSING BROKEN IN TWO PIECES. ACTION TAKEN: REMOVED TOP CASE AND UPPER PLANETARY INSTALLED NEW HOUSING AND GASKET. REINSTALLED UPPER PLANETARY AND TOP CASE ALL WORK IAW BHT CR&O 63.Feb 19, 2002 · N422EH · Bell 412SDR CA020206002Bearing · spalled(CAN) OUTER RACE AND TWO BALLS EXHIBIT SEVERE PEELING.TRUE INDICATION BY MAGNETIC PLUG.INTERNAL OIL PUMP FILTER CAPTURED NUMEROUS METAL FRAGMENTS.BEARING CAGE SEVERLY WORN AND SPREAD THROUGH OUT THE TRANSMISSION AS POWDER.Feb 4, 2002 · Bolkms BO105CBSSDR ALG2002F00050Gear · contaminatedUPON DISASSEMBLY AND INSPECTION OF PARTS DUE TO METAL CONTAMINATION. PINION GEAR HAS EXCESSIVE GALLING ON GEAR TEETH DUE TO IMPROPER MACHINING AND MESHING WITH T/M GEAR. BOTH PARTS WERE SCRAPPED AND SENT FOR WARRANTY CREDIT. ASSURE PROPER MACHINING AND MESHFeb 3, 2002 · N343AL · Bell 206L3SDR CA020213014Case · cracked(CAN) THE LIFT LINK BEARING BOSS WAS FOUND CRACKED DURING ROUTINE MAINTENANCE.Feb 2, 2002 · Bell 205A1SDR HEEA077822Filter Element · failedFILTER ELEMENT FAILED, TRANSMISSION CHIP LIGHT ILLUMINATED.Jan 30, 2002 · N493PH · Bell 407SDR HEEA077820Filter Element · failedFILTER ELEMENT FAILED, METAL IN OIL - SCRAPPED.Jan 30, 2002 · N402PH · Bell 407SDR HEEA077756Gearbox · making metalMAIN ROTOR GEARBOX MAKING METAL.Jan 28, 2002 · N495PH · Bell 407SDR AUS20020060Gasket · faulty(AUS) MAIN ROTOR TRANSMISSION EPICYCLIC RING GEAR GASKET FAULTY. GASKET WAS EXTRUDING FROM BETWEEN THE UPPER AND LOWER CASES AND BREAKING INTO PIECES AND CAUSING AN OIL LEAK WHICH WAS PROGRESSIVELY WORSENING. ON DISASSEMBLY THE MATING CASE FLANGES SHOWEDSIGNS Jan 25, 2002 · Aerosp AS355F1SDR HEEA077730Bearing · wornOIL COOLER BLOWER HAS WORN BEARINGS.Jan 25, 2002 · N402PH · Bell 407SDR ALG2002F00012Bearing · improper partUPON REPAIRS OF GEARBOX, BEARING RACE HAVING TWO SERIAL NUMBERS ETCHED ON RACE. TO PREVENT RECURRENCE: PROPER IDENTIFICATION OF PART BEFORE LEAVING FACTORY.Jan 25, 2002 · N937AL · Bell 407SDR ALG2002F00011Pinion Gear · galledCHIP LIGHT LUMINATED, HAVING METAL IN OIL. UPON DISASSEMBLY OF GEARBOX, FOUND EXCESSIVE GALLING ON GEAR TEETH (PINION GEAR). EXCESSIVE GALLING ON PINION GEAR DUE TO IMPROPER GEAR MESHING AND EXCESSIVE LOAD TO TORQUE AREA. INSURE GEAR HARDNESS AND PROPER MESJan 25, 2002 · N937AL · Bell 407SDR HEEA077699Seal · leakingGEARBOX LEAKING OIL AT AIR / OIL SEPARATOR SEAL AT APPROXIMATELY 2 LITERS PER HOUR.Jan 23, 2002 · N4036H · Snias AS350B2SDR AUS20020115Bearing · cracked(AUS) MAIN TRANSMISSION BEARING INNER RACE SPLIT WITH HEAVY BRINNELLING EVIDENT. METAL CONTAMINATION OF TRANSMISSION OIL SYSTEM.Jan 18, 2002 · Hughes 369HSSDR HEEA077708Bearing · wornMAIN ROTOR BEARING FAILURE.Jan 18, 2002 · Bell 407SDR ERAA077891Transmission · making metalTRANSMISSION IS MAKING METAL. ALL FOUR CONTROL ROD ASSY BRGS WORN BEYOND LIMITS. BOTH CENTROL LEVERS BRGS FROZEN. TWO CENTROL LEVER TO SLIDING SLEEVE BRGS FROZEN. TWO HINGED SUPPORT BRGS FROZEN. DUST SHIELD CLAMP RUSTED, TOP CASE TO OUTER CASE BOLTS MECHANJan 15, 2002 · Bolkms BO105SSDR ERAA077890Transmission · making metalTRANSMISSION IS MAKING METAL. HINGED SUPPORT BEARINGS FROZEN. ONE EACH SLIDING SLEEVE TO CONTROL LINK BRG MECHANICALLY DAMAGED. UPPER CENTER HOUSING SLIGHTLY CORRODED ONE PLANETARY AXLE BREAKING DOWN & ONE PLANETARY GEAR PITTED. ACTION TAKEN: DISASSEMBLEDJan 10, 2002 · N125EH · Bolkms BO105SSDR CA020402004Bearing · failed(CAN) TRANSMISSION REPLACED DUE METAL CONTAMINATION.Dec 22, 2001 · Bell 212SDR R7MR34743Transmitter · inoperativeOIL PRESSURE TRANSMITTER (MGB) - UNIT INOPERATIVE. PRESSURE FLUCUATES FROM 2 BAR TO 14 BAR EVEN WITHOUT ENGINES RUNNING. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Dec 19, 2001 · N102HN · Urocop EC135P1SDR HEEA077615Pressure Switch · failedWOULD NOT TURN ON TRANSMISSION LIGHT AFTER SHUTDOWN.Dec 19, 2001 · N499PH · Bell 407SDR HEEA077602Mount · crackedTRANSMISSION MOUNT CRACKED RUBBER.Dec 18, 2001 · N494PH · Bell 407SDR HEEA077592Housing · damagedRIVETS WORKING.Dec 18, 2001 · N490PH · Bell 407SDR AUS20011455Gear · damaged(AUS) MAIN TRANSMISSION SUN GEAR TEETH (2OFF) CHIPPED WITH SUBSTANTIALSECONDARY DAMAGE. METAL CONTAMINATION OF TRANSMISSION. SUSPECTPNO 206-040-122-3 GEAR IS NOT TO BE USED IN A PNO 206-040-002-025 MODEL TRANSMISSION AS PER TB 206-75-12.Dec 17, 2001 · Bell 206BSDR HEEA077569Gearbox · making metalMAIN ROTOR GEARBOX MAKING METAL.Dec 17, 2001 · N495PH · Bell 407SDR JYD2002F00001Support · cracked3 CRACKS WERE FOUND IN LWR SUPPT E MODEL MN GEARBOX WAS REMOVED FROM SERVICE FOR O/H IN1995. IN DECEMBER OF 2001, SUPPT WAS MACHINED TO REMOVE CORROSION. AFTER MACHINING, CRACK WAS VISUALLY DETECTED IN MOUNTING LUG HOLE NR 4 AS INSTALLED ON AC. FLUORESCENT Dec 6, 2001 · N157AC · Skrsky S64FSDR 2002F00105Support · cracked3 CRACKS WERE FOUND IN LOWER SUPPORT OF MAIN ROTOR GEARBOX.Dec 6, 2001 · N157AC · Skrsky S64FSDR CA011203005Bearing · peeling(CAN) BOTH THE PLANETARY AXLE AND ROLLER BEARING PLATING PEELING.Dec 3, 2001 · Bolkms BO105CBSSDR HEEA077453Friction Ring · leakingFRICTION RING LEAKS.Dec 3, 2001 · N855PH · Snias AS350BSDR HEEA077433Idler Gear · missingBEARING MISSING WHEN PACKAGED PART WAS OPENED.Dec 3, 2001 · Bell 214STSDR HEEA077430Gear · mismarkedGEAR SERIAL NUMBER A-FS9423 AND A-FS9409 ARE IMPROPERLY MARKED WITH PART NUMBER 204-040-146-103.Dec 3, 2001 · Bell 206L3SDR CA020103001Bearing · spalled(CAN) GEARBOX RECEIVED FROM THE USA FOR INVESTIGATION OF METAL CONTAMINATION. UPON DISASSEMBLY THE SUBJECT BEARING SHOWS SIGNS OF EXCESSIVE PEELING ON ONE BALL, 75 PERCENT OF AREA AFFECTED. ANOTHER BALL ALSO STARTING TO PEEL. ONE HALF OF SPLIT INNER RACE HAD Dec 1, 2001 · Bolkms BO105CBSSDR ALG2002F00000Bevel Gear · making metalTRANSMISSION MAKING METAL. BEVEL GEAR CRACKED FROM BOLT HOLE.Nov 26, 2001 · N417AL · Bell 407SDR CA011126001Bearing · damaged(CAN) OUTER AND INNER RACE OF BEARING DISPLAY MODERATE PITTING AND PEELING.ONE BALL DISPLAYS HEAVY PITTINGNov 22, 2001 · Bolkms BO105CBSSDR HEEA077258Bearing · overheatedBEARING OVERHEATEDNov 21, 2001 · N612PH · Bell 407
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