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.
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 HEEA966440Liner · mis mfgLINER FOUND TO BE OBLONG MIC READING 6.232 AND 6.2155. MISMANUFACTURED - LINER IS OUT OF ROUND.SDR HEEA966428Chip Detector · shortedCHIP PLUG HAS INTERNAL SHORT CAUSING TRANS CHIP LIGHT.SDR CA960129025Seal · leaking(CAN)SEAL LEAKING. OIL HAS TO BE ADDED AT THE RATE OF 1 QUART PER 30 HOURS OF OPERATION.SDR 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 NORMALSDR 96ZZZX628Transmission · leakingDURING INSPECTION, A LEAKY SEAL WAS DISCOVERED ON THE INPUT SHAFT OF THE TRANSMISSION. REPLACED TRANSMISSION.SDR CA960126020Transmission · contaminated(CAN)METAL CONTAMINATION ON BOTH CHIP DETECTORS.SDR 96ZZZX3579Switch · failedGEARBOX OIL PRESSURE SWITCH INOPERATIVE. NR 1 MGB PRESSURE LIGHT WILL NOT ILLUMINATE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR HEEA956325Transmission · oil leakTRANSMISSIONOIL LEAK,SDR 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 NSDR 96ZZZX1030Transmission · leakTRANSMISSION OIL LEAKING THROUGH CORK. CORK SEEMS SATURATED WITH OIL. APPEARS CORK NEEDS TO BE SEALED WITH SOMETHING BETTER THAN SHELLAC.SDR 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.SDR HEED95450Seal · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED SEAL UNITSDR HEED95449Mating Ring · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED MATING RING UNITSDR HEED95448Packing · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED UNITSDR HEED95447Packing · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED UNITSDR HEED95446Tab Loc-Nut · leaking#1 TRANSMISSION INPUT QUILL LEAKING REPLACED UNITSDR 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'RINGSDR 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 SIKORSKYSDR CA960126007Transmission · making metal(CAN)TRANSMISSION REMOVED DUE TO MAKING METAL. TIME THIS INSTALLATION 120.8 HOURS.SDR 96ZZZX101Spider Set · defectiveRECEIVED SPIDER SET FROM BELL AS A NEW REPLACEMENT PART. PLANETARY PIN HOLES ARE ROUGH AND HAVE TOO MUCH UNEVEN CHAMFER.SDR HEEA956041Bearing · defectiveBEARING CAGE BROKEN (OUTER RACE, SB3316-201 IS BEING SENT WITH BEARING) SENT FOR EVALUATION.SDR 96ZZZX1673Oil Filter · leakingOIL FILTER LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 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)SDR HEED95385Gasket · leakingTRANSMISSION DRAIN PAN LEAKING. REPLACED UNITSDR 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. SDR 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.SDR HEEA955924Bearing · failedBEARING INNER RACE AND ROLLERS BREAKING DOWN AND CAUSING METAL IN OIL. SCRAPPED PART.SDR 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.SDR 95ZZZX6989Reduction Gear · metal contamREMOVED GEAR FOR METAL CONTAMINATION FROM FAILING EPICYCLIC GEARS.SDR 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 GROSDR 95ZZZX6987Pump · metal contamOIL PUMP REMOVED WITH MGB, SN M839, FOR METAL CONTAMINATION FROM FAILING EPICYCLIC GEARS.SDR 95ZZZX6986Cooler · metal contamOIL COOLER REMOVED FOR METAL CONTAMINATION FROM FAILING EPICYCLIC GEAR.SDR 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.SDR 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.SDR 95ZZZX6976Switch · intermittentSWITCH INTERMITTENT INOP, VARIABLE INDICATOR LIGHT STRENGTH. RMA NR R004206.SDR HEEA955860Ball Joint · wornBALL JOINT WORN .008" OUT WHERE IT RIDES AGAINST SUPPORT. REMOVED FROM TRANSMISSION S/N M855. PART SCRAPPED.SDR 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.SDR HEEA955812Shaft Spline · wornAT TRANSMISSION 1500 HOUR INSPECTION FOUND SHAFT SPLINES WORN BEYOND LIMITS. REPLACED WITH NEW SHAFT.SDR 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.SDR 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).SDR 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 OSDR 95ZZZX5463Top Case · crackedMAIN GEARBOX TOP CASE CRACKED AT FORWARD SUPPORT TUBE ATTACHMENT POINT. REPLACED MAIN GEARBOX TOP CASE PN S1635-20211 WITH NEW.SDR 95ZZZX5909Bearing · failedTRANSMISSION REMOVED FOR CHIP LIGHT. FOUND DURING TEAR DOWN FOR REPAIR THAT BEARING SET HAD BEGUN TO BREAK DOWN FROM FATIGUE.SDR HEEA955499Transmission · making metalMETAL IN OIL. METAL ON PLANETARY CHIP PLUG AND IN INTERNAL FILTER. POWER BY THE HOUR COMPONENT.SDR 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.SDR 95ZZZX6591Seal Seat · excess wearSEAL SEAT HAS EXCESSIVE WEAR. RMA NR R003777. REMOVED AND REPLACED.SDR 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.SDR HEEA955355Bearing · making metalMETAL IN OIL. CAUSE OF METAL IN OIL DUE TO BEARING SPALLED. REPLACED WITH SERVICEABLE BEARING. REPAIRED TRANSMISSION.SDR 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 TISDR HEED95228Transmission · corrodedREPAIR OF TRANSMISSION FOUND EXCESSIVE CORRISION ON UPPER HOUSING S/N (A001-00163) ON THE OIL COOLER BLOWER DRIVE QUILL MOUNTING SURFACE.
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