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 AC2A2009061182036Transmission · contaminatedWHILE IN FLIGHT THE TRANSMISSION CHIP RT CAUTION LIGHT CAME ON. PILOT WAS ON APPROACH TO LAND AT MO916, ACFT HAD JUST BEEN STARTED AND WAS 2 MINUTES INTO THE FLIGHT, APPX SPEED WAS 80 KNOTS AT 400 FT. AFTER LANDING THE ACFT WAS SHUTDOWN AND MX WAS CONTACTED.Jun 11, 2009 · N427GT · Bell 427SDR CA090529006Housing · damaged(CAN) MGB UPPER HOUSING BEARING SUPPORT STUDS MISSING LOCK RINGS. MAIN GEAR BOX PN 76351-09600-044, SN A231-00295 DISASSEMBLED FOR OVERHAUL AT 3226:35 TSN. UPPER HSG (PN 76351-09002-053, SN A001-00566) DISSASEMBLED AND FOUND BEARING SUPPORT ATTACHMENT STUDS (May 29, 2009 · Skrsky S76CSDR U0G2009F00001Transmission · overservicedDURING CRUISE FLIGHT, NOTICED HIGH MAIN TRANSMISSION TEMPERATURE. AT THAT TIME MY PASSENGER IN THE BACK SEAT INFORMED ME THAT HE COULD DETECT AN OIL BURNING ODOR. TURNED ACFT AROUND AND RETURNED TO DEPARTURE. MX DRAINED A LITTLE MORE THAN A QUART FROM THE TMay 26, 2009 · N512LD · Agusta A109ESDR U0GA2009052681797Transmission · overservicedDURING CRUISE FLIGHT, NOTICED A HIGH MAIN TRANSMISSION TEMPERTURE. AT THAT TIME MY PASSANGER IN THE BACK SEAT INFORMED ME THAT HE COULD DETECT A BURNED OIL ODOR. TURNED THE ACFT AROUND AND RETURNED TO DEPARTURE. MX DRAINED A LITTLE MORE THE A QUART FROM THEMay 26, 2009 · N511EH · Bell 212SDR 2009FA0000451Impeller · crackedIMPELLER CRACKED AT ATTACH POINT TO SHAFT. PILOT REPORTED LOUD NOISE AND LANDED THE HELICOPTER.May 11, 2009 · N521PD · Doug MD500ESDR CA090505008Chip Detector · contaminated(CAN) AFTER RECEIVING A COMPLETE TRANSMISSION ASSY FROM OVERHAUL FROM THE ORIGINAL EQUIPMENT VENDOR, A RECEIVING INSP WAS CARRIED OUT. THIS INSP INCLUDED VISUAL INSP OF THE GEARBOX ASSY CHIP PLUGS, OF WHICH THERE ARE TWO. THE UPPER CHIP PLUG, WHICH IS IN THE Apr 15, 2009 · Aerosp AS355*SDR CA090402005Damper · leaking(CAN) 3 OF 4 Z-ARIS DAMPERS FOUND LEAKING GLYCOL AND WARNING PIN RECESSED INDICATING FAILURE. ALL 4 Z-ARIS DAMPERS CHANGED.Mar 27, 2009 · Urocop EC135P2SDR CA090304011Gearbox · cracked(CAN) PILOT REPORTED OIL PRESSURE FLUCTUATIONS ON THE NR 1 ENGINE DURING FLIGHT. PILOT SHUTDOWN ENGINE AND CARRIED OUT A SINGLE ENGINE PRECAUTIONARY LANDING. POST FLIGHT INSP REVEALED A CRACK ON THE AGB HSG AND OIL LOSS ON THE NR1 ENGINE. ENGINE IS BEING REPLAFeb 13, 2009 · Bell 412EPSDR QMLA2009021209006Gearbox · crackedFOUND MR GB HOUSING CRACKED AT NR1 INPUT PINION FLANGE. PERFORMED DYE PENETRANT INSPECTION TO CONFIRM CRACK.Feb 12, 2009 · N577LF · Urocop EC135P1SDR CA090206009Transmission · making metalMETAL CONTAMINATION, CHIP LIGHT.Jan 29, 2009 · Skrsky S76ASDR C4NA20090106001Transmission · making metalACFT WAS DISPATCHED TO A FIRE. MADE (3) WATER DROPS AND WERE RELEASED. ACFT LANDED AT REMOTE FUELING SITE WITHOUT INCIDENT. REFUELED AND ONE HOUR LATER WAS DISPATCHED TO ANOTHER FIRE. ACFT WAS STARTED AND RUN-UP NORMALLY. JUST PRIOR TO LIFT-OFF PIC NOTICED MAIJan 6, 2009 · N7011M · Skrsky S61NSDR CA081217015Housing · cracked(CAN) DURING CRUISE, OIL PRESSURE WAS LOST ON THE COMBINING GEARBOX AND THE PILOT PERFORMED AN UNSCHEDULED LANDING OFF BASE. THE HELO HAD TO BE TRANSPORTED BACK ON A TRUCK. INSPECTION OF THE ENGINE REVEALED A CRACK IN THE GEARBOX HOUSING FROM WHICH THE OIL EDec 10, 2008 · Bell 412EPSDR CA081128004Bearing · damaged(CAN) MGB CHIP LIGHT INDICATIONS MGB P/N:76351-09600-044 S/N:A231-00299 REC`D AT HELI-ONE FOR REPAIR. TSN:2037:48 HRS. FOLLOWING DISASSY AND INSP OF MGB THE RT OUTPUT ALIGNMENT BRG WAS FOUND TO BE THE CAUSE FOR THE METAL GENERATION WITH HEAVY SPALLING AT ROLLENov 27, 2008 · Skrsky S76SDR CA081128003Gearbox · failed(CAN) MGB CHIP LIGHT INDICATION MGB PN:76351-09600-044,SN:A231-00107 REC`D AT HELI-ONE FOR REPAIR. TSN:8638:39 TSO:2516:54 FOLLOWING DISASSEMBLY AND INSPECTION OF MGB, RT OUTPUT ALIGNMENT BRG WAS IDENTIFIED AS THE CAUSE FOR METAL GENERATION WITH HEAVY SPALLINGNov 27, 2008 · Skrsky S76SDR 2008FA0000863Pinion Gear · wornDURING SHUT-DOWN, PILOTS REPORTED CLUNKING NOISE. UPON FURTHER INSPECTION, NOISE WAS LOCATED AT UPPER PULLEY SPRAG CLUTCH AREA. REMOVED UPPER PULLEY AND FOUND M/R TRANSMISSION INPUT PINION (PN:269A5103-51) WORN EXCESSIVELY DUE TO LOOSE AFT PINION NUT. PROBANov 10, 2008 · N297BJ · Scwzer 269DSDR CA081128002Bevel Gear · unserviceable(CAN) BROKEN GEAR TOOTH FOUND IN FILTER REPAIR-BROKEN GEAR TOOTH FOUND IN FILTER OF S61 MGB SN: A14-215. MGB WAS REMOVED FROM ACFT HS-HTA AND REURNED TO HELI-ONE TO BE REPAIRED TSN: 31804:41 TSO: 769:56 DISASSY DONE AT HELI-ONE TO FIND THAT THE INPUT BEVEL GEANov 3, 2008 · Skrsky S61ASDR CA081127001Housing · cracked(CAN) CRACK FOUND ON THE FRONT/RT SIDE OF LWR HSG REPAIR TO LWR HSG CARRIED OUT IAW RDC NO: P-RH07-038 H1E-02. THIS AREA OF THE HSG IS ALWAYS HIGHLY SCRUTANIZED DURING NDT.Nov 3, 2008 · Skrsky S61NSDR CA081114004Gearbox · making metal(CAN) MGB HAD A INDICATION ON THE MGB BEING CONTAMINATED WITH METAL. REMOVED THE MGB AND RETURNED IT TO MANUFACTURER WHO DISASSEMBLED THE MGB TO FIND THAT THE CAUSE OF THE METAL CONTAMINATION WAS FROM THE UPPER BRG SUPPORT NUT, P/N: S6135-22032-001 THE CAUSE Nov 3, 2008 · Skrsky S61NSDR CA081028003Bevel Gear · damaged(CAN) TRANSMISSION CHIP LIGHT ILLUMINATED. MECHANIC FOUND SMALL DEBRIS ON THE LWR CHIP PLUG. UPON INSP BY THE OVERAUL SHOP, THEY DISCOVERED THE BEVEL GEAR DAMAGED. A SMALL PIECE OF GEAR TOOTH APPROX. .360X.073 HAD BROKEN OFF THE GEAR ASSY AND DISCOVERED THE BEOct 24, 2008 · Bell 407SDR CA081201011Spindle · worn(CAN) TRANSMISSION MOUNTS REMOVED DUE TO BEARING WEAR. UPON FURTHER INSP, SPINDLE ALSO FOUND DAMAGED IN LOCATION OF WASHER P/N 206-030-507-001. HARD WASHER MOVEMENT DUE TO BEARING WEAR HAD WORN INTO THE RADII OF THE SPINDLE MOUNTING AREA. SPINDLE SCRAPED. Oct 1, 2008 · Bell 206BSDR CA081201008Chip Detector · cracked(CAN) BOTH TEDESCO B7936S CHIP DETECTOR BASES FOUND CRACKED AT BASE OF O-RING FLANGE. CAUSED BY OVERTORQUE DURING AN EARLIER INSTALLATION. CRACKS NOT VISIBLE UNTIL CHIP DETECTORS WERE REMOVED TO DRAIN TRANSMISSION OIL.Sep 19, 2008 · Doug 600NSDR M7KA0524083912Pressure Sensor · malfunctionedOIL PRESSURE LIGHT ILLUMINATES AT GROUND IDLE. NEW SWITCH NORMALLY WORKS WELL BUT ON OCCASION LOSES INTERNAL CALIBRATION OR IS MISCALIBRATED AS NEW SWITCHES SOMETIMES EXHIBIT THE SAME PROBLEM. SUGGEST A MORE MODERN DESIGN BE CONSIDERED FOR THIS PART. (K)Aug 4, 2008 · N807MH · Urocop EC130B4SDR M7KA0625084142Pressure Sensor · intermittentOIL PRESSURE LIGHT ILLUMINATES AT GROUND IDLE. NEW SWITCH INSTALLED. NO FURTHER DEFECT NOTED. THIS SWITCH NORMALLY WORKS WELL BUT ON OCCASION LOSES INTERNAL CALIBRATION OR IS MISCALIBRATED AS NEW SWITCHES SOMETIMES EXHIBIT THE SAME PROBLEM. SUGGEST A MORE MODEAug 4, 2008 · N822MH · Urocop EC130B4SDR CA080731002Bearing · rough(CAN) UPON A SCHEDULED INSPECTION OF THE TRANSMISSION WAFFER FILTER AN EXCESSIVE AMOUNT OF FERROUS METAL WAS FOUND. THERE HAD BEEN NO METAL FOUND ON THE CHIP DETECTOR OR IN THE COURSE INLET SCREEN. A SWEEP OF THE SUMP WITH A MAGNET FOUND NO METAL. AFTER DISSASJul 29, 2008 · Bell 205A1SDR QML2008F00006Case · crackedDURING A ROUTINE 800 HOUR INSPECTION, A CRACK WAS DISCOVERED IN THE WEBBING OF THE MAIN TRANSMISSION. THE CRACK IS IN THE MAIN CASE SUPPORT BUT THE IPC DOES NOT PROVIDE ANY TRANSMISSION SUBASSEMBLY PN. (K)Jul 22, 2008 · N137LN · Urocop EC135P2SDR CA080718007Pump · dislodged(CAN) THE SEAL FOR THE TRANSMISSION OIL PUMP BECAME DISLODGED, AND LOSS OF OIL OCCURRED.Jul 17, 2008 · Bell 206BSDR CA080722001Bearing · damaged(CAN) UPON DESCENT WITH AN EXTERNAL LOAD, MASTER CAUTION WARNING INDICATION ILLUMINATED. THE PIC CHECKED THE CAUTION PANEL TO FIND A TRANSMISSION OIL PRESSURE CAUTION LIGHT ILLUMINATED, TRANSMISSION OIL PRESSURE GAUGE INDICATING ZERO PRESSURE. A POST-SHUTDOWN Jul 13, 2008 · Bell 205A1SDR CA081127007Shaft · corroded(CAN) MGB PN:76351-09600-044 SN:A231-00044 IN FOR OVERHAUL. FOLLOWING CLEANING AND INSP OF NEW SPLINE SHAFT, CORROSION WAS FOUND AT INNER AND OUTER SPLINES. ALL REMAINING SPLINES SHAFTS (QTY:6) PULLED FROM STOCK AND INSPECTED, NO EVIDENCE OF CORROSION FOUND. Jul 8, 2008 · Skrsky S76SDR CA081127008Pinion Gear · corroded(CAN) CORROSION PITTING FOUND ON BORE ID OF (2) HELICAL PINIONS HSI (P.A.P) MGB PN:76351-09500-044 SN:A081-00196 REC`D FOR O/H. PRIOR TO ASSY INSP OF NEW CUSTOMER SUPPLIED HELICAL PINIONS (X2), REVEALED CORROSION PITTING IN BORE ID OF BOTH PINIONS AT AREA OF Jun 20, 2008 · Skrsky S76SDR CA081127010Shaft · corroded(CAN) EXCESSIVE CORROSION FOUND ON NEW QUILL SHAFT. MAIN GEARBOX O/H PN:76351-09500-044, SN:A081-00058 DURING CLEAN-UP AND INSP OF NEW QUILL SHAFT (PN, SN MENTIONED BELOW) MULTIPLE CORROSION PITTING CLUSTERS FOUND ON INTERNAL SPLINES AND ID OF PART. RETURN TOJun 11, 2008SDR CA081127009Shaft · corroded(CAN) CORROSION FOUND ON NEW QUILL SHAFT MAIN GEARBOX O/H PN:76351-09500-044, SN:A081-00110 FOLLOWING CLEANING AND INSPECTION OF NEW QUILL SHAFT (P/N,S/N LISTED BELOW), MULTIPLE CORROSION PITTING CLUSTERS FOUND ON INTERNAL SPLINES AND ID OF PART.Jun 11, 2008 · Skrsky S76SDR CA081127011Bearing · failed(CAN) PERFORMED CAGE SHAKE ON NEW BRGS IAW MFG ACFT ENGINEERING INSTRUCTION EI NR E76-702-35-1601. RESULTS FAILED INSP RETURN TO VENDOR FOR WARRANTY. UNSERVICEABLE BRG RETURN TO VENDOR AWAITING WARRANTY RMA NR COMPANY SQID NR 08-04194.Jun 6, 2008 · Skrsky S76ASDR M7K2008F00019Pressure Sensor · failedLOW MGB OIL PRESSURE WARNING LIGHT ILLUMINATES DURING GROUND IDLE OF THE AC. SWITCH WAS FOUND OUT OF TOLERANCE. SWITCH WAS REPLACED WITH A SERVICEABLE PART WITH NO FURTHER DISCREPANCY NOTED. THIS IS NOT AN UNCOMMON FAULT FOR THIS PART. SUGGEST IMPROVED DESIGNMay 23, 2008 · N809MH · Urocop EC130B4SDR M7K2008F00018Pressure Sensor · failedLOW MGB OIL PRESSURE WARNING LIGHT FLICKERED IN FLIGHT WITH NO AUDIBLE WARNING. SWITCH WAS REPLACED WITH A SERVICEABLE PAR AND WITH NO FURTHER DISCREPANCY NOTED. THIS IS NOT AN UNCOMMON FAULT FOR THIS PART. SUGGEST IMPROVED DESIGN OR BETTER QC FOR INTERNAL PAMay 23, 2008 · N851MH · Urocop EC130B4SDR M7K2008F00017Pressure Sensor · inoperativeLOW MGB OIL PRESSURE WARNING LIGHT FLICKERED IN FLIGHT WITH NO AUDIBLE WARNING. SWITCH WAS REPLACED WITH A SERVICEABLE PAR AND WITH NO FURTHER DISCREPANCY NOTED. THIS IS TO AN UNCOMMON FAULT FOR THIS PART. SUGGEST IMPROVED DESIGN OR BETTER QC FOR INTERNAL PARMay 23, 2008 · N807MH · Urocop EC130B4SDR CA080908006Transmission · damaged(CAN) WHILE IN CRUISE FROM AN OIL RIG , THE PILOT HEARD A LOUD BANG AND THE ACFT YAWED LT AND RT AND WAS FOLLOWED BY A LOUD RUMBLING SOUND. THE COCKPIT INDICATION SHOWED THAT THE ACFT HAS A TRANSMISSION CHIP AND A CHIP SUMP CAUTION. THE PILOT DESCENDED DOWN TOMay 7, 2008 · Bell 430SDR CA080513007Transmission · making metal(CAN) TRANSMISSION CHIP LIGHT ILLUMINATION. FERROUS METAL CHIPS, WHISKERS AND FLAKES FOUND IN FILTER AND SUMP AND ON CHIP DETECTOR.May 6, 2008 · Snias AS332LSDR Y5CR200700004Bevel Gear · brokenM/R TRANSMISSION GEAR HAS BROKEN TOOTH.May 1, 2008 · Doug MD500ESDR CA081127012Housing · corroded(CAN) GEARBOX REMOVED FOR EXCESSIVE CORROSION AROUND OIL FILTER HSG FITTING. MAIN GEARBOX RECEIVED AT HELI-ONE FOR REPAIR AT TT:10961:18 HRS. TSO:2969:48 HRS. FLUID ADAPTER (FITTING) REMOVED FROM LWR HSG OIL FILTER AREA AND CORROSION WAS CLEANED/REMOVED TO ALLApr 17, 2008 · Skrsky S76ASDR 2008FA0000363Gearbox · damagedHAD A MAIN GEARBOX CHIP EVENT. PERFORMED CHECKS IAW MM TO INCLUDE OIL DAIN, STRAIN AND FLUSH. HAD FIVE SCALE TYPE CHIPS THE LARGEST BEING 1.5MM AND SENT IN FOR ANALYSIS. RETURNED AIRCRAFT TO SERVICE. AT RECEIPT OF ANALYSIS DATA PERFORMED A BORESCOPE OF PINIONApr 6, 2008 · N111AK · Snias AS350BASDR 2008FA0000148Housing · wornINPUT BOX HOUSING BEARING WORN. (SHOULDER)Mar 27, 2008 · N179CB · Urocop EC120BSDR CA081127013Bearing · unserviceable(CAN) GEARBOX MAKING METAL TSN:2969:43 HRS. GEARBOX RECIEVED FOR PREMATURE OVERHAUL DUE TO METAL CONTAMINATION. DURING INSP PROCESS , RT SPUR PINION ALIGNMENT ROLLER BRG SB2151-107 S/N:2659 (LOCATED AT UPPER HSG COUNTERBORE) WAS FOUND TO BE BREAKING UP AT OUTMar 20, 2008 · Skrsky S76ASDR CA080314015Gear · broken(CAN) ACFT WAS BROUGHT IN WITH XMSN NOISE AND CHIP LIGHT. XMSN WAS OPENED AND A PIECE OF GEAR TOOTH 7/8 OF AN INCH LONG WAS FOUND MISSING. THIS IS THE SECOND OCCURENCE OF THIS TYPE THAT WE HAVE ENCOUNTERED. THE LAST SDR WAS APRIL OF 2005. (TC NR 20080314015)Mar 13, 2008 · Hughes 369SDR M7K2008F00121Transmitter · intermittentPILOT REPORTED THAT THE MAIN GEARBOX LOW OIL PRESSURE WARNING LIGHT ILLUMINATED INTERMITTENTLY AT IDLE. A NEW OIL PRESSURE TRANSMITTER WAS INSTALLED AND NO FURTHER FALSE INDICATIONS NOTED. THIS SWITCH HAS A MODERATE FAILURE RATE USUALLY BY LOSING ITS LOW ENDMar 3, 2008 · N807MH · Urocop EC130B4SDR M7K2008F00120Transmitter · intermittentPILOT REPORTED THAT THE MAIN GEARBOX LOW OIL PRESSURE WARNING LIGHT ILLUMINATED INTERMITTENTLY AT IDLE. A NEW OIL PRESSURE TRANSMITTER WAS INSTALLED AND NO FURTHER FALSE INDICATIONS NOTED. THIS SWITCH HAS A MODERATE FAILURE RATE USUALLY BY LOSING ITS LOW ENDMar 3, 2008 · N813MH · Urocop EC130B4SDR CA080227008Bearing Race · spalled(CAN) METAL WAS FOUND ON ENGINE LOWER CHIP PLUG. THE 2 1/2 BEARING IN THE GEARBOX WAS REMOVED AND FOUND THE SPALLING ON THE OUTER RACE.Feb 27, 2008 · Bell 206BSDR AC2A021408001Gearbox · making metalIN CRUISE FLIGHT, AT 3500 MSL, THE MGB CHIP SUMP CAS MESSAGE CAME ON. FOLLOWED THE EMERGENCY PROCEDURE. THE CHIP BURNER WOULD NOT CLEAR THE CHIP. LANDED AT AIRPORT WITHOUT INCIDENT. FOUND 3 SMALL FLAKES ON RT LOWER CHIP PLUG. PERFORMED SERVICEABILITY CHECK ANDFeb 14, 2008 · N139JP · Agusta AB139SDR CA080221004Gearbox · mismanufactured(CAN) MAINT WAS TROUBLESHOOTING OIL PRESSURE PROBLEMS. THE POWER SECTION ALWAYS APPEARED THAT IT HAD LOTS OF OIL. VISUAL INDICATION. THE OIL PRESSURE FLUCTUATIONS OCCURRED FEB. 5TH. IN THE TROUBLESHOOTING PROCESS A LITTLE OIL WAS BEING DRAINED AND YET THE VISFeb 9, 2008 · Bell 212SDR 497Transducer · inoperativeAIRCRAFT TRANSMISSION OIL PRESSURE ON INTEGRATED INSTRUMENT DISPLAY SYSTEM (IIDS) DECREASING. MADE TURN TO COME BACK TO INTRACOASTAL CITY. EMERGENCY CHECKLIST PULLED OUT AND FOLLOWED. INDICATED PRESSURE WENT DOWN INTO THE RED. LANDING AREA FOUND, AND LANDEJan 21, 2008 · N430CT · Bell 430SDR CA080128006Bearing · making metal(CAN) TSO OF THE TRANSMISSION ASSY 1186.6 HOURS. THE AC HAD TAKEN OFF AND WAS IN CRUISE WHEN A TRANSMISSION METAL DETECTOR LIGHT ILLUMINATED. THE PILOT LANDED AC BACK AT CAMP FOR THE ENGINEER TO INVESTIGATE THE DEFECT. THE BEARING IS AN ON CONDITION BEARING.Dec 15, 2007 · Bell 205A1
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