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 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 SPALLEDAug 21, 1997 · N492HL · Bolkms BO105CBSSDR 97ZZZX4713Output Shaft · mismanufacturedOUTPUT SHAFT REJECTED NEW OUT-OF-BOX. SILVER PLATING ON INNER SHAFT SURFACE NOT PROPERLY APPLIED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Aug 21, 1997 · Bolkms BK117A3SDR 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.Aug 21, 1997 · Bolkms BK117A3SDR 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.Aug 20, 1997 · Bell 206BSDR 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 FROAug 12, 1997 · N174AL · Bell 206L4SDR HEEA0010615Sun Gear · spalledSPALLING. REPLACED WITH SERVICEABLE PART.Aug 7, 1997 · N91070 · Bolkms BO105SSDR HEEA0010614Planetary Axle · spalledSPALLING. REPLACED WITH SERVICEABLE AXLE.Aug 7, 1997 · N91070 · Bolkms BO105SSDR 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. Aug 7, 1997 · N50293 · Bolkms BO105SSDR 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. INSPECTIONJul 28, 1997 · N100S · Agusta A109CSDR 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. INSPECTIONJul 28, 1997 · N100S · Agusta A109CSDR 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. INSPECTIONJul 28, 1997 · N100S · Agusta A109CSDR HEEA0010533Oil Pump · seal leakTRANSMISSION OIL PUMP SEAL LEAKING. HOUSING BROKEN UPON REMOVAL.Jul 21, 1997 · N57416 · Bell 407SDR 97ZZZX5063Switch · failedWARNING SWITCH UNIT INOPERATIVE. OIL PRESSURE WARNING LIGHT WILL NOT TURN OFF. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 20, 1997 · N203LF · Bolkms BO105LSA3SDR 97ZZZX5060Switch · failedTRANSMISSION LIGHT ILLUMINATES DURING FLIGHT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 20, 1997 · N202LF · Bolkms BO105LSA3SDR 97ZZZX5073Transmitter · failedTRANSMITTER UNIT CAUSES OIL PRESSURE GAUGE NEEDLE TO FLUCTUATE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jul 17, 1997 · N911VU · Bolkms BK117B1SDR HEEA0010503Transmitter · erraticPRESSURE TRANSMITTER OUTPUT IS ERRATIC AND OUT OF TOLERANCE.Jul 16, 1997 · N5029H · Bolkms BO105SSDR 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. TRANSMISSJul 14, 1997 · N911D · Agusta A109CSDR 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 WASJul 14, 1997 · N911D · Agusta A109CSDR HEEA0010462Oil Pump · leaksTRANSMISSION OIL PUMP LEAKS THROUGH SEAL.Jul 10, 1997 · N427PH · Bell 407SDR HEEA0010458Indicator Ftng · loosePRESSURE FITTING LOOSE ON REAR OF INDICATOR. RANGE MARKING FADED.Jul 10, 1997 · N5000K · Bell 206L1SDR HEEA0010449Planetary Gear · defectiveUNABLE TO OBTAIN PROPER CLEARANCE BETWEEN ROLLERS AND WASHERS. SENT TO BELL HELICOPTER TEXTRON, ATTN: BOB TRENT FOR EVALUATION.Jul 10, 1997 · N745H · Bell 214STSDR 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 Jul 10, 1997 · N159AC · Skrsky S64FSDR 98ZZZX1397Oil Tank · crackedTRANSMISSON OIL TANK CRACK ON TOP AT VENT LINE FITTING.Jul 8, 1997 · N313KA · Kaman K1200SDR 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.Jul 3, 1997 · Boeing 1072SDR AU970817Gear · faulty(AUS) MAIN ROTOR TRANSMISSION GEAR FAULTY - METAL CONTAMINATION OF CHIP DETECTORJun 29, 1997 · Robsin R22BETASDR 97ZZZX3662Press Transducer · failedTRANSDUCER DROPPED FROM 2.5 TO 1.0 BARS IN-FLIGHT. REF: RMA NR R011617. REMOVED AND REPLACED.Jun 28, 1997 · N117NC · Bolkms BK117C1SDR HEEA0010353Indicator · sticksTEMP. NEEDLE INTERMITTENTLY STICKS AT ZERO. READS LOW OUT OF TOLERANCE AND HAS EXCESSIVE FRICTION.Jun 26, 1997 · N5014Y · Bell 206L1SDR HEEA0010328Pinion · pittedPITTING ON PINION GEAR TEETH. REPLACED WITH SERVICEABLE PART.Jun 26, 1997 · N5748M · Bell 214STSDR HEEA0010327Spacer Set · wornSPACER SET UNEVENLY WORN. REPLACED WITH SERVICEABLE PART.Jun 26, 1997 · N5748M · Bell 214STSDR HEEA0010326Bearing · failedBEARING BREAKING DOWN. REPLACED WITH SERVICEABLE PART. S/N 5641/5642Jun 26, 1997 · N5748M · Bell 214STSDR HEEA0010322Pump · shaft scoredGENERATOR AND SHAFT SCORED.Jun 26, 1997 · N22347 · Bell 412SDR AU970898Bearing · spalled(AUS) MAIN ROTOR TRANSMISSION DUPLEX BEARING SPALLED - METALCONTAMINATION OF GEARBOXJun 25, 1997 · Bell 206BSDR 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.Jun 18, 1997 · N230LF · Bell 230SDR HEEA0010133Gear Planetary · mis mfgGEARS IMPROPERLY MACHINED. TOLERANCES INCORRECTJun 16, 1997 · N745H · Bell 214STSDR AU970991Gear · damaged(AUS) MAIN ROTOR TRANSMISSION UPPER PLANETARY RING GEAR TOOTH CHIPPED - MINOR DAMAGE TO ONE UPPER PLANETARY GEARJun 14, 1997 · Hiller UH12ESDR HEEA0010105Transmission · making metalMAKING METAL. SENT TO BELL HELICOPTER TEXTRON FOR CREDIT AGAINST REPLACEMENT PART PURCHASED.Jun 12, 1997 · N5748M · Bell 214STSDR HEEA0010055Case Assy · corrodedCORROSION ON INLET OIL PORT NEXT TO OIL PUMP.Jun 5, 1997 · N5742N · Bell 206L1SDR 98ZZZX1395Chip Detector · defectiveREMOVAL FOR NORMAL INSPECTION FOUND PHENOLIC RING MISSING FROM TIP. TT: 456.9 HOURS.Jun 4, 1997 · N313KA · Kaman K1200SDR HEEA0010021Case Assy · defectiveGR BOX PEELING PLATING.Jun 3, 1997 · N22347 · Bell 412SDR 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.May 30, 1997 · N6097Z · Snias AS350B2SDR 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.May 30, 1997 · N6097Z · Snias AS350B2SDR 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.May 30, 1997 · N6097Z · Snias AS350B2SDR 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.May 30, 1997 · N6097Z · Snias AS350B2SDR 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.May 30, 1997 · N6097Z · Snias AS350B2SDR 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.May 30, 1997 · N350BZ · Snias AS350BSDR 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.May 27, 1997 · N745H · Bell 214STSDR HAIHEEA9921Gear Planetary · mis mfgGEARS IMPROPERLY MACHINED, TOLERANCES INCORRECT. SERIAL NUMBERS REMOVED ARE A4007, A3750 AND A4028.May 27, 1997 · Bell 214STSDR 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 INSTALLATIONMay 21, 1997 · Hughes 269CSDR HAIHEEA9906Gear Planetary · mis mfgMISMANUFACTURED. GEARS IMPROPERLY MACHINED. TOLERANCES INCORRECTMay 19, 1997 · Bell 214STSDR HAIHEEA9896Gearbox · leaksGEARBOX LEAKS.May 19, 1997 · N407PH · Bell 407
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