JASC 6320

Service difficulty reports · 1,931

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 HEEA966440Liner · mis mfgLINER FOUND TO BE OBLONG MIC READING 6.232 AND 6.2155. MISMANUFACTURED - LINER IS OUT OF ROUND.Jan 15, 1996 · Skrsky S76ASDR HEEA966428Chip Detector · shortedCHIP PLUG HAS INTERNAL SHORT CAUSING TRANS CHIP LIGHT.Jan 12, 1996 · N230UN · Bell 230SDR CA960129025Seal · leaking(CAN)SEAL LEAKING. OIL HAS TO BE ADDED AT THE RATE OF 1 QUART PER 30 HOURS OF OPERATION.Jan 11, 1996 · Bell 206L4SDR AU960148Oil System · low pressure(AUS) MAIN TRANSMISSION GEARBOX OIL PRESSURE FELL TO 44PSI - OIL FILTERAND CHIP DETECTORS CHECKED OK - AFTER THE OIL WAS DRAINED AND THEGEARBOX REFILLED THE PRESSURE RETURNED TO NORMALJan 10, 1996 · Skrsky S76CSDR 96ZZZX628Transmission · leakingDURING INSPECTION, A LEAKY SEAL WAS DISCOVERED ON THE INPUT SHAFT OF THE TRANSMISSION. REPLACED TRANSMISSION.Jan 10, 1996 · N5074R · Hughes 369DSDR CA960126020Transmission · contaminated(CAN)METAL CONTAMINATION ON BOTH CHIP DETECTORS.Jan 3, 1996 · Hughes 369DSDR 96ZZZX3579Switch · failedGEARBOX OIL PRESSURE SWITCH INOPERATIVE. NR 1 MGB PRESSURE LIGHT WILL NOT ILLUMINATE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Dec 28, 1995 · N203LF · Bolkms BO105LSA3SDR HEEA956325Transmission · oil leakTRANSMISSIONOIL LEAK,Dec 27, 1995 · N230UN · Bell 230SDR JYER951221Ring Gear Tooth · brokePILOTS OBSERVED CHIP LIGHT. LANDED IMMEDIATELY. CHIPS BEYOND LIMITS FOUND ON CHIP PLUG. LOWER HALF OF RING GEAR TOOTH BROKE OFF. CRACK APPEARS TO HAVE INITIATED AT HARD LINE ON TOOTH. MISSING 1.4 INCHES OF TOOTH WAS BROKEN IN ABOUT 20 PIECES. COMPONENT NDec 21, 1995 · N1048Y · Skrsky S61ASDR 96ZZZX1030Transmission · leakTRANSMISSION OIL LEAKING THROUGH CORK. CORK SEEMS SATURATED WITH OIL. APPEARS CORK NEEDS TO BE SEALED WITH SOMETHING BETTER THAN SHELLAC.Dec 21, 1995 · N34698 · Bell 206B3SDR HEEA956307Bevel Gear Tooth · failedRECEIVED TRANSMISSION WITH METAL IN OIL. DISASSEMBLED AND FOUND BEVEL GEAR LISTED ABOVE WITH A TOOTH BROKEN OFF. PART IS SCRAPPED CONDITION.Dec 20, 1995 · N2148K · Bell 412SDR HEED95450Seal · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED SEAL UNITDec 13, 1995 · N236X · Bell 230SDR HEED95449Mating Ring · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED MATING RING UNITDec 13, 1995 · N236X · Bell 230SDR HEED95448Packing · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED UNITDec 13, 1995 · N236X · Bell 230SDR HEED95447Packing · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED UNITDec 13, 1995 · N236X · Bell 230SDR HEED95446Tab Loc-Nut · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED UNITDec 13, 1995 · N236X · Bell 230SDR HEED95425Chip Detector · defectiveTRANSMISSION CHIP LIGHT CAME ON TWICE FOUND DETECTOR BAD HAD ONE OF TEFLON RINGS CRACKED (NOTE) ALSO USED ONE NEW O'RING P/N M83248/1-131. REPLACED CHIP DETECTOR AND INSTALLED NEW O'RINGDec 13, 1995 · N278X · Skrsky S76CSDR HEED95424Filter · chip lightTRANSMISSION HAD TWO CHIP LIGHTS ON FLIGHT FROM SIKORSKY, FILTER REMOVED AND INSPECTED FOR METAL ALSO USED O'RING P/N M83248/1-238 AND 12 QTS OF DEXTRON II OIL. REPLACED FILTER O'RING AND OIL AS INSTRUCTED BY SIKORSKYDec 13, 1995 · N278X · Skrsky S76CSDR CA960126007Transmission · making metal(CAN)TRANSMISSION REMOVED DUE TO MAKING METAL. TIME THIS INSTALLATION 120.8 HOURS.Dec 6, 1995 · Bell 206BSDR 96ZZZX101Spider Set · defectiveRECEIVED SPIDER SET FROM BELL AS A NEW REPLACEMENT PART. PLANETARY PIN HOLES ARE ROUGH AND HAVE TOO MUCH UNEVEN CHAMFER.Dec 1, 1995 · N4348P · Bell 47G5ASDR HEEA956041Bearing · defectiveBEARING CAGE BROKEN (OUTER RACE, SB3316-201 IS BEING SENT WITH BEARING) SENT FOR EVALUATION.Nov 15, 1995 · N22342 · Skrsky S76ASDR 96ZZZX1673Oil Filter · leakingOIL FILTER LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Nov 9, 1995 · N6099P · Snias AS350B2SDR CHI1513Carrier · crackedTHE AFT TRANSMISSION WAS REMOVED FOR MAKING CHIPS. THE UPPER HOUSING WAS DISASSEMBLED TO INSPECT THE CARRIER BEARINGS FOR SOURCE OF CHIPS. A SPALLED BEARING WAS FOUND. A VISUAL INSPECTION OF THE SECOND STAGE CARRIER DISCOVERED A CRACK. (X)Nov 7, 1995 · N234CH · Boeing 234SDR HEED95385Gasket · leakingTRANSMISSION DRAIN PAN LEAKING. REPLACED UNITNov 3, 1995 · N236X · Bell 230SDR 95ZZZX6326Gear Tooth · tooth failedTHE ACFT RETURNED SHORTLY AFTER TAKEOFF WITH THE PILOT REPORTING NO TRANSMISSION OIL PRESSURE OR ROTOR TACH READING. FAILURE OF THE XMSN OIL PUMP WAS SUSPECTED. UPON REMOVAL OF THE PUMP, A CHUNK OF A TOOTH FROM THE RING GEAR ASSY WAS FOUND IN THE XMSN SUMP. Oct 31, 1995 · N6129Q · Hughes 269CSDR 95ZZZX6322Spider Set · mismanufacturedRECEIVED SPIDER GEAR SET AS NEW REPLACEMENT PART FROM BELL. DURING RECEIVING INSPECTION, NOTED PINION PIN HOLE FINISH VERY ROUGH AND CHAMFER ROUGH AND ECCENTRIC. ALSO, TOO DEEP IN SPOTS. RETURNED TO BELL FOR REPLACEMENT.Oct 30, 1995 · N4348P · Bell 47G5ASDR HEEA955924Bearing · failedBEARING INNER RACE AND ROLLERS BREAKING DOWN AND CAUSING METAL IN OIL. SCRAPPED PART.Oct 24, 1995 · N132AE · Bolkms BK117B2SDR 95ZZZX6344Retainer Nut · untorquedDURING C/W AD 95-06-03, BOTH UPPER AND LOWER M/R SHAFT RETAINER NUTS WERE FOUND FINGER-TIGHT. (BREAK-LOOSE TORQUE LESS THAN 2 FEET/POUND.) BOTH GEAR CARRIER DOWEL PINS SLIGHTLY DAMAGED, UPPER LOCK WASHER HOLES ELONGATED CIRCUMFERENCIALLY.Oct 24, 1995 · N240RH · Robsin R22SDR 95ZZZX6989Reduction Gear · metal contamREMOVED GEAR FOR METAL CONTAMINATION FROM FAILING EPICYCLIC GEARS.Oct 18, 1995 · N32GA · Snias AS350BSDR 95ZZZX6988Reduction Gear · rollers failedEPICYCLIC REMOVED FOR 2,000 HR O/H. ON REMOVAL, FOUND SYSTEM CONTAMINATED WITH LARGE AMOUNTS OF METAL RESULTING IN COMPLETE MGB/OIL PUMP, COOLER REPLACEMENT. NO CHIP LIGHTS EVER ILLUMINATED EVEN THOUGH SYSTEM WAS FUNCTIONAL. METAL REACHING PLUG HAD BEEN GROOct 18, 1995 · N32GA · Snias AS350BSDR 95ZZZX6987Pump · metal contamOIL PUMP REMOVED WITH MGB, SN M839, FOR METAL CONTAMINATION FROM FAILING EPICYCLIC GEARS.Oct 18, 1995 · N32GA · Snias AS350BSDR 95ZZZX6986Cooler · metal contamOIL COOLER REMOVED FOR METAL CONTAMINATION FROM FAILING EPICYCLIC GEAR.Oct 18, 1995 · N32GA · Snias AS350BSDR 95ZZZX6241Bearing · failedOPERATOR REPORTS 5 TRANSMISSION BEARING FAILURES WITHIN THE LAST YEAR. SUSPECT IMPROPERLY MANUFACTURED BEARINGS, AND, AS A RESULT, IMPROPER INSTALLATION. AN ACCIDENT PREVENTION RECOMMENDATION WAS SUBMITTED TO AAI-200.Oct 17, 1995 · N615BH · Bell 47G5ASDR HEED95369Upper Housing · corrodedWHILE CHANGING OIL COOLER DRIVE QUILL SEAL , FOUND CORROSION ON QUILL MOUNT PAD , TREATED AND APPLIED MASTING UNTIL PERMANENT REPAIR CAN BE MADE.Oct 12, 1995 · N276X · Skrsky S76CSDR 95ZZZX6976Switch · intermittentSWITCH INTERMITTENT INOP, VARIABLE INDICATOR LIGHT STRENGTH. RMA NR R004206.Oct 10, 1995 · N20875 · Snias AS350BSDR HEEA955860Ball Joint · wornBALL JOINT WORN .008" OUT WHERE IT RIDES AGAINST SUPPORT. REMOVED FROM TRANSMISSION S/N M855. PART SCRAPPED.Oct 6, 1995 · N6095S · Snias AS350BSDR HEEA955839O-Ring · faultyTHESE "NEW DESIGN" ORINGS FOLD OVER UPON INSTALLATION OF INPUT FLANGE CAUSING EXCESSIVE LEAKING. REPLACED "NEW DESIGN" (THINNER) ORINGS WITH "OLD DESIGN" (THICKER) ORINGS AND RETURNED TO SERVICE.Oct 5, 1995 · N2772A · Bell 206L1SDR HEEA955812Shaft Spline · wornAT TRANSMISSION 1500 HOUR INSPECTION FOUND SHAFT SPLINES WORN BEYOND LIMITS. REPLACED WITH NEW SHAFT.Sep 22, 1995 · N7077B · Bell 206LSDR 95ZZZX6205Housing · flange damageDURING DISASSEMBLY, THE RIGHT OIL PASSAGE O-RING FLANGE WAS FOUND DAMAGED. THE DAMAGE WAS OBVIOUSLY NOTED DURING LAST OVERHAUL DUE TO THE INSTALLATION OF 2 O-RINGS TO MAKE IT SEAL.Sep 15, 1995 · N491HL · Bolkms BO105SSDR 95ZZZX5717Transmission · making metalPILOT REPORTED A CHIP LIGHT AND UPON INSPECTION OF THE CHIP DETECTOR, A LARGE SHINING FLAKE AND NUMEROUS SMALLER FLAKES WERE FOUND. UNIT WAS SENT IN FOR OVERHAUL. (UNIT HAS 429.6 HOURS REMAINING TO OVERHAUL).Sep 15, 1995 · N4282X · Hughes 369DSDR 96ZZZX610Transmission · failedPILOT REPORTED WHINE IN TRANSMISSION FOLLOWED BY LOUD BANG, SEVERE VIBRATIONS, ENGINE NR 1 FIRE WARNING LIGHT, LOSS OF BOTH ENGINES. AUTO-ROTATED SAFELY. AIRCRAFT SEVERELY DAMAGED BY FIRE AFTER LANDING. TEAR-DOWN INSPECTION REVEALED CONTAMINATION BLOCKING OSep 14, 1995 · N650MS · Bolkms BO105CSDR 95ZZZX5463Top Case · crackedMAIN GEARBOX TOP CASE CRACKED AT FORWARD SUPPORT TUBE ATTACHMENT POINT. REPLACED MAIN GEARBOX TOP CASE PN S1635-20211 WITH NEW.Sep 1, 1995 · N26567 · Skrsky S58ETSDR 95ZZZX5909Bearing · failedTRANSMISSION REMOVED FOR CHIP LIGHT. FOUND DURING TEAR DOWN FOR REPAIR THAT BEARING SET HAD BEGUN TO BREAK DOWN FROM FATIGUE.Aug 8, 1995 · N5008K · Bell 206BSDR HEEA955499Transmission · making metalMETAL IN OIL. METAL ON PLANETARY CHIP PLUG AND IN INTERNAL FILTER. POWER BY THE HOUR COMPONENT.Aug 2, 1995 · N3897N · Bell 214STSDR GCHA9518Transmission · bearing failedDURING FLIGHT A/C REGISTERED TRANSMISSION CHIP LIGHT. PERFORMED AN UNSCHEDULED LANDING . IT WAS FOUND TO HAVE , METAL IN OIL, DUE TO DUPLEX BEARING FAILURE. ACTT 7243.3. REMOVED AND REPLACED TRANSMISSION BMC 00503 WITH S/N BMC 45364.Aug 1, 1995 · N57491 · Bell 206L1SDR 95ZZZX6591Seal Seat · excess wearSEAL SEAT HAS EXCESSIVE WEAR. RMA NR R003777. REMOVED AND REPLACED.Jul 25, 1995 · N365SC · Aerosp SA365N1SDR 95ZZZX4413Bearing Set · making metalTRANSMISSION CHIP LIGHT ILLUMINATED IN-FLIGHT. FOUND BEARING SET BEGINNING TO BREAK DOWN FROM FATIGUE CAUSING METAL IN OIL AND CHIP LIGHT TO COME ON.Jul 18, 1995 · N3896W · Bell 206BSDR HEEA955355Bearing · making metalMETAL IN OIL. CAUSE OF METAL IN OIL DUE TO BEARING SPALLED. REPLACED WITH SERVICEABLE BEARING. REPAIRED TRANSMISSION.Jul 13, 1995 · N50182 · Bell 206L1SDR 95ZZZX6086Bearing · making metalUPON FINDING METAL IN OIL SCREEN, TEAR DOWN INSPECTION OF MAIN TRANSMISSION WAS PERFORMED. LOWER SUNGEAR BEARING WAS FOUND TO BE THE CAUSE OF THE METAL CONTAMINATION. THIS HAS BEEN THE FIFTH BEARING FAILURE. EACH BEARING HAS HAD LESS THAN 200 HOURS TOTAL TIJul 12, 1995 · N615BH · Bell 47G5ASDR HEED95228Transmission · corrodedREPAIR OF TRANSMISSION FOUND EXCESSIVE CORRISION ON UPPER HOUSING S/N (A001-00163) ON THE OIL COOLER BLOWER DRIVE QUILL MOUNTING SURFACE.Jul 11, 1995 · N89H · Skrsky S76C
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