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 ULXR201710180001Bevel Gear · failedMAIN ROTOR GEARBOX BEVEL RING GEAR TOOTH FAILURE. THIS IS THE THIRD INCIDENT OF A GEAR TOOTH FAILURE.Oct 14, 2017 · N701WP · Bell 407SDR QMLA2017100717108Transmission · making metalON THE WAY BACK TO BASE, A TRANSMISSION CHIP LIGHT ILLUMINATED ON THE CAUTION WARNING PANEL. REMOVED THE TRANSMISSION AND FREEWHEEL UNIT CHIP DETECTORS AND FOUND THE BOTTOM TRANSMISSION CHIP PLUG WITH METAL PARTICLES. THE MANUAL STATED IT WAS FLAKES AND CAUOct 7, 2017 · N229AM · Bell 407SDR QMLA2017092717099Transmission · making metalDURING FLIGHT, THE MAIN TRANSMISSION CHIP LIGHT ILLUMINATED. THE PILOT ADVISED CREW THAT THE MISSION WOULD BE ABORTED AND THEY WOULD LAND. THE PILOT REDUCED POWER AND MONITORED THE TRANSMISSION OIL PRESSURE AND LANDED LANDED SAFELY WITHOUT ANY ADDITIONAL ISSUSep 27, 2017 · N105VU · Urocop EC135T2SDR M3XA2017081109Transmission · making metalPL FOR TRANSMISSION CHIP LIGHT. TRANSMISSION CHIP WAS EVALUATED IAW MM 63-14 AND WAS DETERMINED TO DO A SERVICEABILITY CHECK IAW 63-11. AFTER 5 MINUTES INTO THE GROUND RUN FOR THE CHECK A SUBSEQUENT CHIP LIGHT ILLUMINATED. IT WAS THEN DECIDED TO REPLACE THESep 11, 2017 · N407WA · Bell 407SDR QMLA2017091017091Transmission · making metalIN FLIGHT, THE TRANSMISSION CHIP CAUTION ILLUMINATED. INSPECTED CHIP DETECTOR, DEBRIS FOUND, DETERMINED TO BE INSIGNIFICANT IAW MM 63, NO FURTHER ACTION REQUIRED. AIRCRAFT WAS GROUND RUN FOR 10 MIN,THEN OPERATIONAL CHECK FLIGHT FOR 30+ MIN. COULD NOT DUPLICASep 10, 2017 · N407AM · Bell 407SDR QMLA2017090617088Gear · corrodedAIRCRAFT EXPERIENCED A COCKPIT MGB CHIP LIGHT AFTER ENGINE START AND BEFORE TAKE-OFF. SERVICEABILITY CHECKS AND MGB OIL FLUSH WAS ACCOMPLISHED AND AIRCRAFT RETURNED TO AIRWORTHY CONDITION AND RELOCATED TO MAINTENANCE FACILITY IAW AMM AND ASB EC135-63A-012. DUSep 6, 2017 · N530LN · Urocop EC135P2SDR K2DA201711140001Gearbox · making metalTHE PILOT EXPERIENCED A WHINE IN THE ENGINE AND DECIDED TO LAND THE ACFT. UPON LANDING, THE ENG CHIP LIGHT ILLUMINATED. WHEN MX ARRIVED ENG OIL WAS PRESENT ON THE EXTERIOR OF THE ACFT. THE PT SUPPORT OIL PRESSURE FITTING LINE WAS FOUND COMPLETELY SHEARED FRSep 5, 2017 · N402SH · Bell 407SDR DCGA201708070362Gearbox · false indicationPILOT EXPERIENCED A MAIN ROTOR GEARBOX CHIP LIGHT ENROUTE TO THE AIRPORT. MAINTENANCE EXAMINED THE SYSTEM CHIP DETECTORS AND ELECTRICAL SYSTEM AND FOUND NO CHIP OR ABNOMALIES. AN OPERATIONAL TEST FLIGHT WAS PERFORMED AND FOUND SATISFACTORY. THE AIRCRAFT WAS REAug 6, 2017 · N711JH · Snias AS350B2SDR QMLA2017073117074Pinion Gear · failedPILOT REPORTED MGB CHIP LIGHT ON LANDING AT BASE. CHIP PLUG AND FILTER INSPECTED, CLASS A BLACK FUZZ FOUND ON PLUG. IAW AMC EO 23-6300-EO-669 AND AD 2014-05-01 INSPECTION OF DRIVE GEAR PINION AND BEVEL GEAR TEETH REQUIRED AS THERE HAD BEEN 2 CHIP LIGHTS WITHJul 31, 2017 · N230AM · Urocop EC135P2SDR QMLA2017071817069Transmission · making metalDURING DECENT, A TRANSMISSION CHIP LIGHT ILLUMINATED ON THE CAUTION WARNING PANEL. DIVERTED TO THE CLOSEST SUITABLE LANDING AREA. AFTER LANDING AND SHUTDOWN,Jul 18, 2017 · N193AM · Bell 407SDR QMLA2017071417068Warning Light · illuminatedDURING CLIMB-OUT, EXPERIENCED A MASTER CAUTION ILLUMINATION WITH A CORRESPONDING TRANSMISSION CHIP IN THE MISCELLANEOUS SECTION OF THE CAD. AFTER 3X ACTIVATION OF THE CHIP BURN SWITCH IAW THE CHIP PULSE PROVISIONS OF THE FMS, THE TRANSMISSION CHIP CAUTION LIGHJul 14, 2017 · N135HN · Urocop EC135P2SDR 2017FA0000646Drive Shaft · shearedTHE CLUTCH SHAFT SHEARED IN HALF DURING FLIGHT.Jul 8, 2017 · N810BK · Robsin R44RAVENIISDR 2017FA0000604Drive Shaft · shearedTHE CLUTCH SHAFT SHEARED IN HALF DURING FLIGHT.Jul 8, 2017 · N810BK · Robsin R44RAVENIISDR 2017FA0000323Pressure Switch · chafedTHIS MAIN GEAR BOX OIL PRESSURE SWITCH WAS CAUSING MGB PRESSURE LIGHT TO ILLUMINATE ON CAUTION PANEL. FURTHER RESEARCH INTO THIS PARTICULAR PART SHOWED INTERNAL WIRES CHAFFED AGAIN HOUSING CAUSING A SHORT IN WIRES AND ILLUMINATING MGB PRESSURE LIGHT. SUGGESTJun 26, 2017 · N820PM · Urocop EC120BSDR QMLA2017061117060Chip Detector · false activationIN FLIGHT THE TRANSMISSION CHIP CAUTION ILLUMINATED. INSPECTED THE CHIP DETECTOR. DEBRIS FOUND DETERMINED TO BE INSIGNIFICANT IAW MM 63. ACFT WAS GROUND RUN FOR 10 MINUTES. AN OPERATIONAL CHECK FLIGHT FOR 30 PLUS MINUTES WAS ALSO COMPLETED. COULD NOT DUPLICATJun 11, 2017 · N407AM · Bell 407SDR QMLA2017060817058Chip Detector · contaminatedIN FLIGHT THE XMSN CHIP CAUTION ILLUMINATED. INSPECTED CHIP DETECTOR, DEBRIS FOUND DETERMINED TO BE INSIGNIFICANT AS PER MM CH 63, NO FURTHER ACTION REQUIRED. AIRCRAFT WAS GROUND RUN FOR 10 MIN. COULD NOT DUPLICATED DISCREPANCY, AIRCRAFT WAS RETURNED TO SERVICJun 8, 2017 · N407AM · Bell 407SDR 2017F00117Gear · crackedMAIN ROTOR TRANSMISSION OIL PRESSURE LIGHT ILLUMINATED DURING FLIGHT. IMMEDIATELY LANDED AIRCRAFT AND FOUND NO OIL PRESSURE BEING SUPPLIED BY LUBE PUMP. ON FURTHER INVESTIGATION FOUND METALLIC CHIP LODGED IN THE IMPELLER OF THE OIL PUMP RESULTING IN THE PUMP SJun 5, 2017 · N507CC · Doug 600NSDR 8HBR20170508003Seal · leakingMAIN ROTOR GEARBOX INPUT SEAL LEAKING WITH 181.3 TSN. PREVIOUS INPUT SEAL REPLACED FOR LEAK WITH 391.3 TSN. PRIOR TO THIS INPUT SEAL REPLACED FOR LEAK WITH 46.6 TSN.May 6, 2017 · N7087J · Robsin R22BETAIISDR 2017F00059Bolt · looseUPON REMOVAL OF THE EPICYCLIC ASSEMBLY FROM THE MAST IT WAS DISCOVERED THAT THE EPICYCLIC / MAST BOLTS (6EA) HAD BECOME LOOSE. THE 6 BOLTS ARE HELD IN PLACE BY 3 STAINLESS STEEL DOUBLE LOCKING TAB WASHERS AND DOUBLE LOCKED WITH A SPECIAL STAR WASHER. THE BOLApr 10, 2017 · N350GR · Snias AS350B3SDR 2017FA0000368Clutch · brokenFOUND FWU SEIZED. DISASSEMBLY FOUND CLUTCH CAGE BROKE BETWEEN SPRAGS IN TWO PLACES.Apr 6, 2017 · N58TR · Beech 58PSDR 2017FA0000367Cage · bentFOUND FREE WHEELING ASSY SEIZED AT ACFT SHUTDOWN. DISASSEMBLY OF FWU, FOUND CAGE BENT BETWEEN SPRAG.Apr 6, 2017 · Bell 206ASDR AC2R2018042006Seal · leakingSEAL LEAKED ON THE TRANSMISSION, WASHED GREASE OUT OF BEARING.Mar 25, 2017 · N639NA · Agusta AW139SDR JYDR20170324075Gear · spalledDURING DISASSEMBLY FOR MINI OVERHAUL LARGE AMOUNTS OF FERROUS MATERIAL WAS NOTICED IN OIL SUMP. FURTHER TEARDOWN REVEALED 2ND STAGE PLANETARY GEARS WERE HEAVILY SPALLED.Mar 23, 2017 · Skrsky S64ESDR AC2R2018041901Bearing · roughOIL COOLER HAD EXCESSIVE VIBRATION. BEARING ROUGH.Feb 20, 2017 · N139CW · Agusta AB139SDR QMLA2017013117013Collector · corrodedWHILE PERFORMING 1600 HR SPACER TUBE INSPECTION ON MAIN TRANSMISSION, TECHNICIAN NOTICED PAINT COMING OFF OF COLLECTOR WHEEL ABOVE SPLINED AREA, REMOVED PEALING PAINT TO DISCOVER CORROSION AND PITTING ON COLLECTOR WHEEL. THIS AIRCRAFT CURRENTLY REMAINS OOS AT Jan 31, 2017 · N135CH · Urocop EC135P2SDR 2017FA0000005Gearbox · excess playDURING MAINTENANCE A MECHANIC DISCOVERED EXCESSIVE GEARPLAY IN THE MAIN ROTOR TRANSMISSION. THE UNIT WAS REMOVED FOR REPAIRJan 5, 2017 · N454JH · Hughes 369ESDR JYDR20170321001Gearbox · failedDURING A NORMAL START PROCEDURE, WITH THE NR 1 ENGINE AT GROUND IDLE AND JUST PRIOR TO THE ROTOR BRAKE BEING RELEASED, A FAILURE OCCURRED IN THE MAIN GEARBOX THAT ALLOWED MOMENTARY ROTATION AND SUBSEQUENT LOCKING OF THE MGB. THE ROTOR SYSTEM BARELY MOVED BEFORJan 1, 2017 · N217AC · Skrsky S64ESDR QMLA2016112916137Pinion Gear · wornPRIOR TO ENGINE START, AS THE PILOT SWITCHED ON BATTERY POWER, THE MAIN TRANSMISSION CHIP DETECTION ILLUMINATED. THE PILOT IMMEDIATELY ABORTED THE START SEQUENCE AND CALLED THE MECHANIC TO COME INSPECT THE AIRCRAFT. THE MECHANIC/S COMPLETED EO 23-6300-EO-669 Nov 29, 2016 · N912NH · Urocop EC135T2SDR AC2R2018042007Shaft · failedBEARING/SHAFT FAILED.Nov 21, 2016 · N639WW · Agusta AW139SDR ALGA1107201640628Transmission · low pressureTRANSMISSION OIL PRESSURE DROPPED TO ZERO DURING FLIGHT FROM OFFSHORE PLATFORM.Nov 4, 2016 · N647AL · Bell 407SDR 9EKA20161029017Stud · brokenDURING SCHEDULED INSPECTION, FOUND BROKEN STUD FROM FORWARD RIGHT HAND OUTBOARD COMBINING GEARBOX MOUNT.Oct 29, 2016 · N390AL · Bell 214*SDR M3XA2016092107Transmission · failedAIRCRAFT WAS ENROUTE WITH PATIENT ONBOARD. PILOT ENCOUNTERED A TRANSMISSION CHIP LIGHT ILLUMINATION AND HAD TO MAKE A PRECAUTIONARY LANDING AT ANOTHER HOSPITAL. PATIENT WAS THEN TAKEN THE REMAINING DISTANCE BY GROUND. MECHANIC ARRIVED AND AFTER PULLING THE Sep 21, 2016 · N519MT · Bell 407SDR CHIR201608262510Bolt · brokenWHILE PERFORMING AD 95-22-09, PARA A, 250 HR SPIRAL BEVEL INSPECTION OF THE AFT TRANSMISSION NR 12 BOLT BROKE DURING INITIAL TORQUE CHECK AT 275" LB.Aug 24, 2016 · N239CH · Boeing 234SDR QMLA2016072416086Transmission · making metalDURING MAINTENANCE GROUND RUN FOR GENERATO ADJUSMENT, TRANSMISSION CHIP LIGHT CAME ON. THE TRANSMISSION OIL AND FILTER HAD JUST 55 MIN TT SINCE LAST CHANGE FOR ANOTHER CHIP INDICATION. THE MECHANIC REMOVED THE CHIP DETECTOR AND INSPECTED. DETERMINED THE CHIPJul 24, 2016 · N535LN · Urocop EC135P2SDR QMLA2016072016081Gearbox · damagedUPON REMOVING THE ENGINE TO MAIN GEARBOX SHAFT TO REPLACE THE MAIN GEARBOX INPUT SEAL. I FOUND THAT THE CASTLATED NUT THAT HOLDS THE ROTOR BRAKE DISK IN PLACE WAS LOOSE. REMOVED NUT, WASHER (SIGNS OF SPINNING IN PLACE) BRAKE DISK, LARGE FLAT WASHER UNDER DISK Jul 20, 2016 · N508AM · Snias AS350B3SDR 9EKA20160714008Pan · crackedAIRCRAFT RETURNED FROM AN MOC FLIGHT FOLLOWING A 300 HOUR / 12 MONTH INSPECTION AND UPON SHUTDOWN, THE PILOT NOTICED THAT THE UPPER PLANETARY GEAR OF THE MAIN TRANSMISSION CHIP LIGHT HAD ILLUMINATED. DURING TROUBLESHOOTING IT WAS FOUND THAT THE DEBRIS COLLECTJul 13, 2016 · N412BG · Bell 412SDR AC2R2016070701Ring · damagedDURING REMOVAL OF THE MAIN ROTOR HEAD ASSY, FIVE PRESSURE BOLTS WERE NOTED OF HAVING A LOSS OF TORQUE PRIOR TO REMOVAL. AFTER REMOVAL OF THE MAIN ROTOR HEAD ASSY, AND FURTHER INSPECTION, DAMAGE WAS FOUND TO THE LOWER CONICAL RING AND TO THE LOWER CONICAL RINGJul 3, 2016 · N139CN · Agusta AB139SDR CHIR201605272394Seal · failedDURING AN INSPECTION MECHANIC REMOVED AFT XMSN LUBE FILTER & NOTICED LARGE METALLIC CHIPS IN THE FILTER HOUSING & ON THE FILTER PACKS. DISASSEMBLED FILTER & FOUND MORE CHIPS. DUE TO A PREVIOUS EXPERIENCE ON N6682D, CREW CHIEF DIRECTED MECHANIC TO REMOVE BLOWMay 27, 2016 · N188CH · Boeing 107*SDR QMLA2016051616054Transmission · making metalAIRCRAFT WAS PREPARING TO TAKEOFF AFTER START UP, WHEN THE MAIN TRANSMISSION CHIP LIGHT ILLUMINATED. PILOT SHUTDOWN THE ACFT. REMOVED MAIN TRANSMISSION CHIP DETECTOR & FOUND IT SATURATED WITH METAL PARTICLES. IAW THE MM, DRAINED & FLUSHED THE MAIN TRANSMISSMay 16, 2016 · N609CF · Agusta A119SDR CHIR201604042338Seal · failedDURING DIS-ASSEMBLY OF A 107 AFT & MIX BOX TRANSMISSION, METAL TABS WERE FOUND IN THE AFT TRANSMISSION FILTER. FURTHER DIS-ASSEMBLY & INSPECTION REVEALED THE METAL TABS CAME FROM THE BLOWER DRIVEN ASSEMBLY OIL SEAL. THE SEAL TABS WERE ALL BROKEN UP INDIVIDUAApr 4, 2016 · N6682D · Boeing 107*SDR AC2R2018042003Bearing · lack of lubeREMOVE OIL COOLER FAN FOR DRY BEARING.Mar 7, 2016 · N639MC · Agusta AW139SDR JYDR20160225 053Ring Gear · crackedMGB REMOVED FOR OIL LEAKING FROM CRACK IN RING GEAR CASE. UPON DISASSEMBLY AT REPAIR STATION DISCOVERED A SECTION OF 13 SPLINE TEETH ON THE UPPER RING FRACTURED. 7 TEETH WERE COMPLETELY SEPARATED FROM THE CASE BUT HELD IN PLACE BY THE INNER RING GEAR ASSY. Feb 24, 2016 · N214EB · Bell 214STSDR CA160224009Gearbox · making metal(CAN) METAL CONTAMINATION ON CHIP PLUG, ONLY 181.6 HRS SINCE O/H, GEARBOX ALMOST SEIZED ON WARM. NOTE: OIL PUMP IS PART OF THE MGB WHICH WAS O/H AT THE SAME TIME AS THE GEARBOX. THE MGB WILL BE SENT FOR A COMPLETE TEAR DOWN FOR A COMPLETED REPORT ANALYSIS. Feb 12, 2016 · Snias AS350B2SDR CA160209003Bearing · corroded(CAN) WHILE REMOVING THE ECS PULLEY TO CHANGE A OIL SEAL ON THE ECS PULLEY SHAFT THE ENGINEER NOTICED CORROSION ON THE BEARING. THE ECS PULLEY DRIVE SHAFT IS ALSO WORN SLIGHTLY UNDERSIZE.Feb 4, 2016 · Agusta AW139SDR JTAA2016FA0000021Bushing · brokenDURING REMOVAL OF MAIN ROTOR GEARBOX, THE FWD AND REAR MGB MOUNT BOLTS AND SLEEVE BUSHINGS WERE REMOVED. 3 OF THE 4 SLEEVE BUSHINGS WERE FOUND TO BE COMPLETELY BROKEN, WITH THE 4TH CRACKED APPROXIMATELY 75 PERCENT OF THE CIRCUMFERENCE OF THE BUSHING IN THE SAJan 15, 2016 · N901CH · Skrsky S92ASDR 1HTR2016011300001Pressure Switch · malfunctionedIN FLIGHT ILLUMINATION OF MAIN GEAR BOX PRESSURE CAUTION LIGHT, RED, PILOT MADE AN UNSCHEDULED PRECAUTIONARY LANDING. PRESSURE SWITCH WAS STICKING.Dec 29, 2015 · N121PD · Urocop EC120BSDR AC2R2018042004Oil Cooler · vibrationOIL COOLER FAN HIGH VIBRATION READINGS.Oct 31, 2015 · N639MM · Agusta AW139SDR CA151022009Actuator · failed(CAN) MGB SUMP CHIP DETECTOR CAS OCCURRED, BURNER PUSHED. WHEN ACFT RETURNED TO BASE CHIP PLUGS PULLED. METAL CONTAMINATION FOUND. RIGHT FREEWHEEL ACTUATOR FOUND UNSERVICEABLE. REPLACED RT FREEWHEEL ACTUATOR WITH NEW AND SUBSEQUENT INSPECTIONS AND CHECKS IAWOct 18, 2015 · Agusta AW139SDR QMLA2015101315096Pinion · damagedMAIN TRANSMISSION HAD STAGE 2 HIGH IRON INDICATION FROM OIL SAMPLE, REQUIRING INPUT DRIVE STAGE TOOTHING INSPECTION IAW ASB EC135-63A-012 WITHIN 25 FH. INSPECTION REVEALED PITTING IN BOTH INPUT PINIONS & BEVEL GEAR OF MAIN TRANSMISSION REQUIRING REPLACEMENT OOct 13, 2015 · N163BF · Urocop EC135P2SDR CA151007019Gearbox · making metal(CAN) DURING SHUTDOWN, PILOT REPORTED AN UNFAMILIAR METALLIC NOISE FOLLOWED SHORTLY BY ILLUMINATION OF THE COMBINING GEARBOX CHIP LIGHT. INSPECTION OF THE CHIP PLUG REVEALED METAL PARTICLES IN EXCESS OF ALLOWABLE, ACFT GROUNDED. COMBINING GEARBOX IS APPROXIMOct 7, 2015 · Bell 206L4
Back to JASC 6320