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 HEEA064703Pump · wornTRANSMISSION OIL PUMP SPLINES WORN.Oct 8, 1999 · N719PH · Bell 407SDR HEEA064702Pump · leakingTRANSMISSION OIL PUMP LEAKING.Oct 8, 1999 · N720PH · Bell 407SDR HEEA064701Pump · damagedTRANSMISSION OIL PUMP HAD SPLINE DAMAGE.Oct 8, 1999 · N407PH · Bell 407SDR HEEA064690Transmission · making metalTRANSMISSION ASSY MAKING METAL.Oct 6, 1999 · N405PH · Bell 407SDR 99ZZZX4664Bearing · failedDUPLEX BEARING, PN SB1060-102, SN EAC 1727, TT OF 792.0 HRS, FAILED IN MGB, PN 6435-20400-065, SN A6-037, LEAVING LARGE FRAGMENTS OF FERROUS METAL IN SUMP AND SUMP SCREEN. FURTHER INSP INDICATED BOTH INNER-BEARING RACES OF SB1060-102 DUPLEX BEARING INSTALLED Oct 6, 1999 · N194AC · Skrsky S64ESDR HEEA064680Seal · leakingSEAL LEAKING. PART WAS SCRAPPED ON SITE.Oct 5, 1999 · N407MM · Bell 407SDR HEEA064679Seal · leakingSEAL ASSY LEAKING BETWEEN CARBON RING AND MATING SURFACE.Oct 5, 1999 · N467PH · Bell 407SDR HEEA064677Housing · crackedHOUSING ASSY CRACKED.Oct 5, 1999 · N719PH · Bell 407SDR CA991028024Bearing · spalling(CAN) MAIN TRANSMISSION RIGHT INPUT BEARING SPALLING. BEARING REPLACED.Oct 5, 1999 · Bolkms BO105SSDR CA000324006Bevel Gear · failed(CAN) UPON RECEIPT OF TRANSMISSION FROM OVERHAUL, THE LT INPUT PINION BEVEL GEAR TEETH WERE FOUND DAMAGED. SUBMITTER STATED CAUSE OF DAMAGE IS NOT YET KNOWN, BUT COULD BE SPALLING AS A RESULT OF OVERLOADING, CORROSION, OR METAL DEFECT.Oct 2, 1999 · Bolkms BO105SSDR HEEA064483Pressure Switch · failedPRESSURE SWITCH WILL NOT TURN ON TRANSMISSION OIL PRESSURE LIGHT. REFERENCE: DMR NR 686424.Sep 30, 1999 · N612PH · Bell 407SDR ERAA064506Stand · mismarkedNEW TRANSMISSION STAND THAT WAS REMOVED FROM STOCK AND HAS INCORRECT PART NUMBER. STAND HAS P/N 105-10157 ON IT (CORRECT P/N FOR LEFT FRAME) AND IS RIGHT A-FRAME AND NOT LEFT.Sep 30, 1999SDR 99ZZZX4089Gearbox · making metalHEAVY TO MODERATE NOISE AND VIBRATION IN-FLIGHT. EXCESSIVE METAL IN FILTER (C-BOX).Sep 27, 1999 · N5017H · Bell 212SDR HEEA064419Main Case · wornINPUT BORE WORN BEYOND LIMITS.Sep 22, 1999 · N510PH · Bell 407SDR HEEA064407Indicator · failedTEMPERATURE WENT TO ZERO DEGREES DURING RUN.Sep 22, 1999 · N407MM · Bell 407SDR CA990927066Planetary Axle · spalled(CAN) PLANETARY REDUCTION GEAR SPALLING FOUND ON IMPORT INSPECTION.Sep 17, 1999 · Bolkms BO105CB*SDR CA991027080Gearbox · making metal(CAN) MAGNETIC CHIP PLUG WAS CONTAMINATED WITH FERROUS METAL FROM MAIN GEARBOX.Sep 15, 1999 · Bell 206BSDR 99ZZZX3932Switch · malfunctionedTRANSMISSION OIL HOT LIGHT COMES ON INTERMITTENTLY WITH TEMPERATURE IN GREEN. REMOVED AND REPLACED.Sep 8, 1999 · N51AG · Bell UH1HSDR HEEA064340Bearing · wornOUTER DIAMETER WORN BELOW LIMITS. REFERENCE: DMR NR 686316.Sep 7, 1999 · N141MA · Bell 407SDR HEEA064339Collector Pan · mismanufacturedCOLLECTOR PAN NOT CONCENTRIC. REFERENCE: DMR NR 686332.Sep 7, 1999 · N141MA · Bell 407SDR HEEA064333Transmitter · fluctuatesPRESSURE FLUCTUATES 15 PSI. REFERENCE: DMR NR 686312.Sep 7, 1999 · N724PH · Bell 407SDR CA990927018Bolt · broken(CAN) BOLTS P/N 350A32-3152-20 THAT SECURE BEVEL GEAR TO VERTICAL SHAFT OF BEVEL REDUCTION GEARBOX ASSY WERE FOUND ATTACHED ONLY FINGER-TIGHT. ONE BOLT/NUT PAIR WAS FOUND SHEARED OFF AND THE OTHER REMAINING 19 BOLT/NUT PAIRS HELD IN POSITION BY LOCKPLATES. Sep 3, 1999 · Snias AS350BASDR GJQA063836Spider · crackedBELL 212 TRANSMISSION WAS REMOVED FOR FERROUS METAL GENERATION. INITIAL TEARDOWN INSPECTION REVEALED LOWER SPIDER CRACKED. THIS CONDITION WAS PREVIOUSLY EMPHASIZED BY ASB 212-91-66A REQUIRING A SPECIAL NDT MAGNAFLUX INSPECTION. ASB 212-91-66 REVISION A WAS PSep 1, 1999 · N82W · Bell 212SDR AU990899Bearing · collapsed(AUS) TRANSMISSION SPRAG CLUTCH BEARING OVERHEATED WITH SUBSEQUENT FAILURE AND DISINTEGRATION OF TWO BALLS.Sep 1, 1999 · Robsin R22BETASDR 99ZZZX3708Spider · crackedTRANSMISSION REMOVED FOR FERROUS METAL GENERATION. INITIAL TEAR-DOWN INSPECTION REVEALED LOWER SPIDER GEAR CRACKED NEAR SPIDER LEG. THIS CONDITION WAS PREVIOUSLY EMPHASIZED ASB 212-99-G1A REQUIRING A SPECIAL NDT MAGNAFLUX INSPECTION, ASB 212-99-66 REV A WAS Sep 1, 1999 · N82W · Bell 212SDR HEEA063862Main Case · wornINPUT BEARING LINER WORN DUE TO APPLICATION OF SEALANT TO INPUT FLANGE AREA CAUSING IMPROPER PINCH FIT ON TRIPLEX BEARING. REFERENCE: DMR NR 686308.Aug 31, 1999 · N141MA · Bell 407SDR 99ZZZX4533Gear · corrodedNEW PART - CORROSION PITTING ON BEARING RACE OF NEW GEAR. REMOVED AND REPLACED.Aug 25, 1999SDR AU990883Gear · fractured(AUS) MAIN TRANSMISSION UPPER SPLINE GEAR TOOTH FRACTURED.Aug 23, 1999 · Bell 206BSDR HEEA063339Case Assy · corrodedCASE ASSEMBLY HAD CORROSION AROUND STUD HOLE, LOWER MAST LINER WORN, MOUNTING FACE CORROSION.Aug 12, 1999 · Bell 212SDR HEEA063282Bolt · wornBOLT WORN .011 INCH. REPLACED WITH SERVICEABLE BOLT.Aug 10, 1999 · N141MA · Bell 407SDR HEEA063260Case Assy · corrodedFOUND CORROSION BEHIND INPUT LINER ON MAIN CASE ASSY. (OIL FILTER CORROSION) REPLACED WITH SERVICEABLE ASSY.Aug 10, 1999 · N2250U · Bell 206L1SDR HEEA063175Housing · mismanufacturedHOUSING MISMANUFACTURED. SMALL HOLE IN HOUSING.Aug 3, 1999 · Bell 206L1SDR CA991027048Line · chafed(CAN) OIL LEAK TRACED TO MGB OIL LINE WHICH WAS CHAFED THROUGH BY A CLAMP.Aug 1, 1999 · Hughes 369DSDR HEEA063031Caliper · leakingROTOR BRAKE CALIPER BEGAN LEAKING AROUND AFT PISTON SEAL. REPLACED WITH SERVICEABLE PART.Jul 29, 1999 · N792CH · Skrsky S76ASDR 99ZZZX3541Gearbox · making metalMAIN ROTOR TRANSMISSION CHIP LIGHT CAME ON IN-FLIGHT WHILE LANDING AT ITS BASE OF OPERATION. MAINTENANCE REMOVED CHIP PLUG. SEVERAL CHIPS WERE FOUND ON PLUG. EXAMINED OIL FILTER METAL AND ALUMINUM WAS PRESENT IN FILTER. REMOVED BEVEL REDUCTION GEARBOX ON CJul 29, 1999 · N102UM · Aerosp AS355ESDR HEEA063102Transmission · making metalTRANSMISSION ASSY MAKING METAL.Jul 28, 1999 · N404PH · Bell 407SDR CA991027061Drag Pin · failed(CAN) STAKING ON THE DRAG PIN FAILED 35.6 HOURS AFTER INSTALLATION.Jul 22, 1999 · Bell 206BSDR HEEA062862Main Case · corrodedMAIN CASE ASSEMBLY LINERS WORN AND CORRODED.Jul 12, 1999 · N1073W · Bell 206L1SDR CA990707039Switch · shorted(CAN) WHILE IN CRUISE FLIGHT, THE MAIN ROTOR GEARBOX OIL PRESSURE LIGHT CAME ON. THE PILOT LANDED IMMEDIATELY. PRESSURE SWITCH WAS FOUND TO BE SHORTED. PRESSURE SWITCH REPLACED.Jun 26, 1999 · Snias AS350BASDR ERAA062571Adapter · pittedNEW ADAPTERS REJECTED UPON RECEIVING DUE TO NICKS AND PITS IN INNER RACE AND DEPRESSION IN INNER RACE. CAN BE FELT WITH .020 INCH RADIUS SCRIBE.Jun 14, 1999SDR CA990630078Bearing · disintegrated(CAN) EXCESSIVE DEBRIS FOUND IN FILTER ASSEMBLY.Jun 10, 1999 · Bolkms BO105CBSSDR HEEA062504Indicator · malfunctionedLCD DISPLAY IS VERY DIM ON INDICATOR.May 26, 1999 · N407MM · Bell 407SDR HEEA062481Switch · malfunctionedTRANS. OIL PRESSURE SEGMENT WOULD NOT COME ON. (LIGHT DOES NOT TURN ON).May 26, 1999 · N719PH · Bell 407SDR HEEA062429Swashplate · leakingEXCESSIVE GREASE LEAKING FROM UPPER TOP SEAL ON SWASHPLATE.May 24, 1999 · N612PH · Bell 407SDR 99ZZZX2869Magnetic Seal · leakingMAGNETIC SEAL LEAKING. REMOVED AND REPLACED.May 22, 1999 · N721SP · Bell 206L1SDR CA990630077Bearing · spalled(CAN) INNER RACE OF ROLLER BEARING WAS FOUND HEAVILY SPALLED.May 21, 1999 · Bolkms BO105CBSSDR CA990817028Bearing · peeling(CAN) QUANTITY OF 3 BALLS IN SUBJECT BEARING WERE PEELING.May 14, 1999 · Bolkms BO105CBSSDR ERAA062390Bearing · roughNEW BEARING FEELS ROUGH.May 13, 1999SDR ERAA062382Adapter · damagedSHAFT IS MAGNETIC, SCRATCHES ON BEARING RACE.May 5, 1999 · N127EH · Bolkms BO105SSDR HEED064544Seal · leakingSEAL LEAKS. ORDERED REPLACEMENT.Apr 27, 1999 · N236X · Bell 230
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