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 97ZZZX4832Bearing · spalledTRANSMISSION RECEIVED FOR METAL IN OIL. INSPECTION REVEALED NOTHING ABNORMAL EXCEPT LT INPUT PINION AND 4638-302-024 BEARING HAD A FEW SLIGHT DENTS OR MARKS IN ROLLERS AND ROLLER PATH ON PINION. BEARING WAS CUT APART AND THE OUTER RACE WAS FOUND VERY SPALLEDSDR 97ZZZX4713Output Shaft · mismanufacturedOUTPUT SHAFT REJECTED NEW OUT-OF-BOX. SILVER PLATING ON INNER SHAFT SURFACE NOT PROPERLY APPLIED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 97ZZZX4712Bevel Wheel · mismanufacutredTRANSMISSION BEVEL WHEEL REJECTED NEW OUT-OF-BOX. UNABLE TO GET ACCEPTABLE GEAR PATTERN. INSTALLED IN 2 DIFFERENT GEARBOXES WITHOUT SUCCESS (SAME RESULTS). THE CONTACT PATTERN IS ALWAYS OFF THE TOE. REPLACED WITH NEW UNIT, CORRECT PROBLEM.SDR CA971015044Seal · leaking(CAN) MGB LEAKING CONTINUALLY FROM OIL SEAL. THERE WERE TWO PREVIOUS OIL SEAL REPLACEMENTS BUT OIL LEAK CONTINUED. FIRST SEAL REPLACED AT 99 HOURS AND SECOND SEAL REPLACED AT 202 HOURS.SDR 97ZZZX4425Case Assembly · corrodedTRANSMISSION REMOVED AND SENT TO COMPONENT SHOP FOR 4,500 HOUR OVERHAUL. EXCESSIVE CORROSION WAS FOUND ON MAIN CASE UNDER INPUT QUILL FLANGE. ALSO, UNDER OIL JET. THIS IS THE FIRST TIME THESE AREAS HAVE BEEN DISASSEMBLED SINCE NEW AIRCRAFT WAS DELIVERED FROSDR HEEA0010615Sun Gear · spalledSPALLING. REPLACED WITH SERVICEABLE PART.SDR HEEA0010614Planetary Axle · spalledSPALLING. REPLACED WITH SERVICEABLE AXLE.SDR HEEA0010613Transmission · pittedSCRAPPED THE FOLLOWING: (5 EA) AXLES P/N 4619204001- SCRAPPED DUE TO EXCESSIVE PITTING ON LOADED SURFACE. (1 EA) PINION P/N 44638302002 - SCRAPPED DUE TO GEAR TEETH SPALLING. (1 EA) BEARING P/N 4619303081 - SCRAPPED DUE TO SPALLING ON OUTER RACE &ROLLERS. SDR HQEA0000014Bearing · spalledFOLLOWING 2 TRANSMISSION CHIP LIGHT EVENTS IN LESS THAN 10 HOURS, METAL WAS FOUND ON THE LOWER TRANSMISSION CHIP PLUG BOTH TIMES. FOLLOWING THE SECOND CHIP LIGHT EVENT, THE TRANSMISSION WAS REMOVED AND SENT TO AGUSTA AEROSPACE CORP FOR INSPECTION. INSPECTIONSDR 97ZZZX4400Bearing · spalledFOLLOWING 2 TRANSMISSION CHIP LIGHT EVENTS IN LESS THAN 10 HOURS, METAL WAS FOUND ON THE LOWER TRANSMISSION CHIP PLUG BOTH TIMES. FOLLOWING THE SECOND CHIP LIGHT EVENT, THE TRANSMISSION WAS REMOVED AND SENT TO AGUSTA AEROSPACE CORP FOR INSPECTION. INSPECTIONSDR 97ZZZX4399Bearing · spalledFOLLOWING 2 TRANSMISSION CHIP LIGHT EVENTS IN LESS THAN 10 HOURS, METAL WAS FOUND ON THE LOWER TRANSMISSION CHIP PLUG BOTH TIMES. FOLLOWING THE SECOND CHIP LIGHT EVENT, THE TRANSMISSION WAS REMOVED AND SENT TO AGUSTA AEROSPACE CORP FOR INSPECTION. INSPECTIONSDR HEEA0010533Oil Pump · seal leakTRANSMISSION OIL PUMP SEAL LEAKING. HOUSING BROKEN UPON REMOVAL.SDR 97ZZZX5063Switch · failedWARNING SWITCH UNIT INOPERATIVE. OIL PRESSURE WARNING LIGHT WILL NOT TURN OFF. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 97ZZZX5060Switch · failedTRANSMISSION LIGHT ILLUMINATES DURING FLIGHT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 97ZZZX5073Transmitter · failedTRANSMITTER UNIT CAUSES OIL PRESSURE GAUGE NEEDLE TO FLUCTUATE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR HEEA0010503Transmitter · erraticPRESSURE TRANSMITTER OUTPUT IS ERRATIC AND OUT OF TOLERANCE.SDR 97ZZZX3840Input Quill · spalledAPPROXIMATELY 5 MINUTES AFTER TAKEOFF, MAIN TRANSMISSION CHIP LIGHT CAME ON AND WOULD NOT ZAP OFF. PILOT RETURNED TO MAINT BASE. TECHNICIAN REMOVED AND INSPECTED BOTH CHIP PLUGS. TOP CHIP PLUG WAS CLEAN. BOTTOM CHIP PLUG HAD 4 LARGE CHIPS ON IT. TRANSMISSSDR 97ZZZX3448Input Quill · spalledAPPROXIMATELY 5 MINUTES AFTER TAKEOFF, MAIN TRANSMISSION CHIP LIGHT CAME ON AND WOULD NOT ZAP OFF. PILOT RETURNED. TECHNICIAN REMOVED AND INSPECTED BOTH CHIP PLUGS. TOP CHIP PLUG WAS CLEAN. BOTTOM CHIP PLUG HAD 4 LARGE CHIPS ON IT. TRANSMISSION FILTER WASSDR HEEA0010462Oil Pump · leaksTRANSMISSION OIL PUMP LEAKS THROUGH SEAL.SDR HEEA0010458Indicator Ftng · loosePRESSURE FITTING LOOSE ON REAR OF INDICATOR. RANGE MARKING FADED.SDR HEEA0010449Planetary Gear · defectiveUNABLE TO OBTAIN PROPER CLEARANCE BETWEEN ROLLERS AND WASHERS. SENT TO BELL HELICOPTER TEXTRON, ATTN: BOB TRENT FOR EVALUATION.SDR 97ZZZX3377Main Shaft · crackedPART WAS MPI'D AND FOUND TO HAVE ONE CRACK INDICATION LOCATED AT THE UPPER END OF THE LOWER SPLINES. THE INDICATION EXTENDS FROM THE SPLINE RADIUS AND GOES TOWARD THE TOOTH FACE AT APPROXIMATELY A 45 DEGREE ANGLE. LENGTH OF INDICATION IS APPROXIMATELY 0.050 SDR 98ZZZX1397Oil Tank · crackedTRANSMISSON OIL TANK CRACK ON TOP AT VENT LINE FITTING.SDR CA970722005Bolt · broken(CAN) ON LOGGING CYCLE TRANSMISSION 'CHIP' LIGHT ON. DISASSEMBLY OF TRANSMISSION REVEALED A SAFETY WIRED BOLT HAD BROKEN AT THE HEAD AND CONTACTED INTERNAL GEARS. BOLTS NOT NORMALLY INSPECTED.SDR AU970817Gear · faulty(AUS) MAIN ROTOR TRANSMISSION GEAR FAULTY - METAL CONTAMINATION OF CHIP DETECTORSDR 97ZZZX3662Press Transducer · failedTRANSDUCER DROPPED FROM 2.5 TO 1.0 BARS IN-FLIGHT. REF: RMA NR R011617. REMOVED AND REPLACED.SDR HEEA0010353Indicator · sticksTEMP. NEEDLE INTERMITTENTLY STICKS AT ZERO. READS LOW OUT OF TOLERANCE AND HAS EXCESSIVE FRICTION.SDR HEEA0010328Pinion · pittedPITTING ON PINION GEAR TEETH. REPLACED WITH SERVICEABLE PART.SDR HEEA0010327Spacer Set · wornSPACER SET UNEVENLY WORN. REPLACED WITH SERVICEABLE PART.SDR HEEA0010326Bearing · failedBEARING BREAKING DOWN. REPLACED WITH SERVICEABLE PART. S/N 5641/5642SDR HEEA0010322Pump · shaft scoredGENERATOR AND SHAFT SCORED.SDR AU970898Bearing · spalled(AUS) MAIN ROTOR TRANSMISSION DUPLEX BEARING SPALLED - METALCONTAMINATION OF GEARBOXSDR LOVA0000241Quill Assy · wornINVESTIGATION FOR NR 1 ENGINE DRIVE VIBRATION FOUND LOW TORQUE ON NUT P/N 222040224001 FOR INPUT QUILL. IN ADDITION, FOUND BEVEL GEAR SPLINE WORN, AND ADAPTER ASSY RUB.SDR HEEA0010133Gear Planetary · mis mfgGEARS IMPROPERLY MACHINED. TOLERANCES INCORRECTSDR AU970991Gear · damaged(AUS) MAIN ROTOR TRANSMISSION UPPER PLANETARY RING GEAR TOOTH CHIPPED - MINOR DAMAGE TO ONE UPPER PLANETARY GEARSDR HEEA0010105Transmission · making metalMAKING METAL. SENT TO BELL HELICOPTER TEXTRON FOR CREDIT AGAINST REPLACEMENT PART PURCHASED.SDR HEEA0010055Case Assy · corrodedCORROSION ON INLET OIL PORT NEXT TO OIL PUMP.SDR 98ZZZX1395Chip Detector · defectiveREMOVAL FOR NORMAL INSPECTION FOUND PHENOLIC RING MISSING FROM TIP. TT: 456.9 HOURS.SDR HEEA0010021Case Assy · defectiveGR BOX PEELING PLATING.SDR HAIHEEA9995Oil Cooler · defectiveREMOVED WITH MAIN GEARBOX ASSEMBLY DUE TO TRANSMISSION MAKING METAL. REPLACEMENTS RECEIVED ON 5-14-97 UNDER S/N M222 AND P/N 350A32-0011-00, S/N M1324.SDR HAIHEEA9994Pump · defectiveREMOVED WITH MAIN GEARBOX ASSEMBLY DUE TO TRANSMISSION MAKING METAL.REPLACEMENTS RECEIVED ON 5-14-97 S/N M222 AND P/N 350A32-0011-00, S/N M1324.SDR HAIHEEA9993Pump · defectiveREMOVED WITH MAIN GEARBOX ASSEMBLY DUE TO TRANSMISSION MAKING METAL.REPLACEMENTS RECEIVED ON 5-14-97 UNDER S/N M222 AND P/N 350A32-0011-00, S/N M1324.SDR HAIHEEA9992Reduction Gear · making metalREMOVED WITH MAIN GEARBOX ASSEMBLY DUE TO TRANSMISSION MAKING METAL. REPLACEMENTS RECEIVED ON 5-14-97 UNDER S/N M222 AND P/N 350A32-0011-00, S/N M1324.SDR HAIHEEA9991Transmission · making metalUPPER TRANSMISSION MAKING METAL, LYNX PAINT PEELING. REPLACEMENTS RECEIVED ON 5-14-97 UNDER S/N M222 AND P/N 350A32-0011-00, S/N M1324.SDR HAIHEEA9966Socket · mis mfgMISMANUFACTURED. HOUSING DIAMETER, WHERE IT SLIPS IN TRANSMISSION, IS TOO SMALL .062". ALSO, INSIDE BORE THAT CHIP DETECTOR SLIPS THROUGH IS TOO SMALL.SDR HAIHEEA9922Gear Planetary · mis mfgGEARS IMPROPERLY MACHINED, TOLERANCES INCORRECT SERIAL NUMBERS REMOVED ARE A2095, A2094, A2092. SENT TO BELL HELICOPTER TEXTRON FOR CREDIT AGAINST REPLACEMENT PARTS PURCHASED.SDR HAIHEEA9921Gear Planetary · mis mfgGEARS IMPROPERLY MACHINED, TOLERANCES INCORRECT. SERIAL NUMBERS REMOVED ARE A4007, A3750 AND A4028.SDR AU970558Case · broken(AUS) MAIN ROTOR TRANSMISSION UPPER CASE FLIGHT CONTROL SYSTEM LH MOUNTING LUG BROKEN - INDICATIONS APPEAR THAT THE LUG HAD BEEN CRACKED FOR SOME TIME - SUSPECT MOUNTING BOLT OVERTORQUED DURING INSTALLATIONSDR HAIHEEA9906Gear Planetary · mis mfgMISMANUFACTURED. GEARS IMPROPERLY MACHINED. TOLERANCES INCORRECTSDR HAIHEEA9896Gearbox · leaksGEARBOX LEAKS.
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