JASC 7210

Service difficulty reports · 873

Reports filed under 7210 · Turbine Engine Reduction Gear, 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 = '7210'
  ORDER BY difficulty_date DESC"

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SDR CA960924043Plug · damaged(CAN) THE #1 ENGINE WAS SHUTDOWN FOLLOWING THE LOSS OF MAIN OIL PRESSURE, WHICH WAS SUBSEQUENTLY FOUND TO BE CAUSED BY DAMAGED THREADS ON A PLUG ON THE REDUCTION GEARBOX.Sep 16, 1996SDR 96ZZZX5080Roller Bearing · cage brokenDISASSEMBLY OF GEARCASE REVEALED THE FORWARD INPUT ROLLER BEARING CAGE WAS BROKEN (775765-1, FIG 5, ITEM 180 OF 72-11-02 PARTS LIST). ALSO,THE INPUT PINION GEAR HAS STARTED TO HAVE SEVERE TOOTH BREAK DOWN (775755-3, FIG 3, ITEM 1558). BOTH IDLER GEARS ALSO HSep 16, 1996 · Saab SF340ASDR MVH0064119Chip Detector · leakingCHIP PLUG LEAKS THROUGH BODY AND ELECTRODE IS LOOSE.Sep 13, 1996 · N63CF · Aerosp SA365NSDR CA960923025Bearing · spalled(CAN) METAL CONTAMINATION IN REDUCTION GEARBOX FROM SPALLED #19 BEARING.Sep 12, 1996SDR REXA96042Prop Gear Case · sheared toothLEFT ENGINE FAILED IN FLIGHT. REMOVED AND REPLACED ENGINE. (M)Sep 8, 1996 · N319PX · Bag JETSTM3101SDR ERAA96306Bearing · failedWAS INSPECTED BY BEARINGS INSP., INC ON W/O 17456-409 SEPT. 12, 1995 AND HAS BEEN DETERMINED TO BE BAD AND INOPERABLE.Sep 5, 1996 · N426EH · Bolkms BO105SSDR CA960923008Tower Shaft · failed(CAN) AFTER TAKEOFF #1 ENGINE TORQUE STARTED TO CLIMB EXCEEDING 130 PERCENT. POWER RETARDED AND TORQUED FLUCTUATED FROM 40-100 PERCENT. ENGINE SELECTED TO MANUAL AND TORQUE DECREASED BUT DID NOT CEASE. AIRCRAFT RETURNED TO BASE. POST FLIGHT INSPECTION FOUND ENAug 28, 1996 · Dhav DHC8301SDR COMA9610261Prop Mtg Flange · corrodedTHE RT ENGINE PROPELLER MOUNTING FLANGE HAD PITTING INSIDE THE MOUNTING BOLT HOLES. DISCREPANCY FOUND DURING SCHEDULED PROPELLER MAINTENANCE. REPLACED THE RT ENGINE.Aug 27, 1996 · N257CA · Emb EMB120RTSDR 96ZZZX5079Bearing · spalledDISASSEMBLY OF GEARCASE REVEALED THE AFT ROLLER BEARING ASSEMBLY SHOWED HEAVY SPALLING OF ALL BEARING COMPONENTS (775758-2) (ITEM 10, FIG 7, AND ITEM 110, FIG 8 IPL).Aug 27, 1996 · Saab SF340ASDR CA960909044Bearing · spalled(CAN) THE REDUCTION GEARBOX WAS FOUND TO HAVE METAL FLAKES OF BEARING MATERIAL ON THE CHIP DETECTOR. THE SOURCE OF THE METAL CONTAMINATION WAS FOUND TO BE THE #15 BEARING WHICH HAD SPALLED BADLY ON THE OUTER RACE WITH SUBSTANTIAL MATERIAL LOSS. THIS WAS A RESUAug 22, 1996SDR ERAA96297Gearbox Cover · defectiveNON SELF LOCKING INSERT NEEDS TO BE INSTALLED AT ACCESSORY LOCATION AS PER CEB-A-1226.Aug 20, 1996 · N427EH · Bolkms BO105SSDR AU961214Gear Box · making metal(AUS) NO1 ENGINE REDUCTION GEARBOX MAGNETIC PLUG CONTAMINATED WITH TYPE3 METAL PARTICLES - SOME TYPE 1 AND TYPE 2 PARTICLES ALSO ON GEARBOX MAGNETIC PLUGSAug 20, 1996 · Skrsky S76ASDR ERAA96293Housing · defectiveHOUSING OVERHAULED 8/2 96. TSO -0- UNABLE TO INSTALL CHECK VALVE INTO HOUSING BORE.Aug 19, 1996 · N427EH · Bolkms BO105SSDR 96ZZZX4321Housing · holeDURING PERFORMANCE OF AN AS RECEIVED TEST, OIL WAS NOTED COMING FROM THE ATMOSPHERIC VENT. THE DISASSEMBLY OF THE GEAR CASE REVEALED THE AFT HOUSING TRANSFER TUBE BORE AREA SHOWED A HOLE IN THE HOUSING ALLOWING OIL TO ENTER THE ADS AREA OF THE GEARBOX. EXAMIAug 19, 1996 · Saab SF340ASDR CA960808012Bearing · spalled(CAN) THE REDUCTION GEARBOX (RGB) WAS FOUND BY THE OPERATOR TO HAVE METAL CONTAMINATION. DISASSEMBLY OF THE RGB REVEALED THE SOURCE OF THE METAL CONTAMINATION WAS THE #15 BEARING WHICH HAD SPALLED BADLY ON THE OUTER RACE. SECONDARY DAMAGE FROM THE CONTAMINATESJul 31, 1996SDR CA960808014Bearing · spalled(CAN) THE REDUCTION GEARBOX (RGB) WAS FOUND TO HAVE METAL CONTAMINATION. DISASSEMBLY OF THE RGB REVEALED THE SOURCE OF THE METAL CONTAMINATION WAS THE #15 BEARING WHICH HAD SPALLED BADLY ON THE INNER RACE, AROUND APPROXIMATELY 90 PERCENT OF THE CIRCUMFERENCE. Jul 29, 1996SDR AU961205Ring · faulty(AUS) ENGINE TORQUE RING FAULTYJul 29, 1996 · Frchld SA227DCSDR RAAA96E4010Red Gearbox · high oil pressNR 3 ENGINE PRECAUTIONARY SHUTDOWN, AT 2026Z WHILE CLIMBING OUT OF ANC, DUE HIGH (244 PSI) REDUCTION GEARBOX OIL PRESSURE. RETURNED TO ANC. VERIFIED INDICATION SYSTEM. REPLACED RGB OIL PUMP ASSY. DID NOT CORRECT PROBLEM. SUSPECT RGB INTERNAL OIL SYSTEM REJul 25, 1996 · N9744C · Lkheed 188ASDR CA960723002Bearing · faulty(CAN) #1 ENGINE REDUCTION GEARBOX CHIP DETECTOR FLAGGED. MATERIAL FOUND TO BE M-50 BEARING MATERIAL. ENGINE WAS CHANGED. IT IS SUSPECTED RGB BEARING DAMAGE CAUSED BY POSSIBLE LIGHTNING STRIKE AS #2 ENGINE WAS CHANGED A FEW DAYS EARLIER FOR THE SAME PROBLEM.Jul 18, 1996 · Dhav DHC8102SDR CA960729016Bearing · spalled(CAN) THE ENGINE, WHICH WAS MAKING METAL, WAS SENT FOR INVESTIGATION/OVERHAUL. DISASSEMBLY FOUND THE #19 BEARING IN THE REDUCTION GEARBOX SPALLED ON THE INNER RACE. THIS IS THE CAUSE OF THE RGB MAKING METAL. THERE WERE NO CONTRIBUTING FACTORS FOR THE #19 BEARIJul 17, 1996SDR CA960808103Gearbox · broken bearing(CAN) AIRCRAFT HAD CHIP DETECTOR LIGHT IN CRUISE AND RETURNED TO BASE. POST FLIGHT INSPECTION FOUND METAL IN THE OIL TANK. FURTHER INSPECTION REVEALED THE #4 AND #5 BEARINGS HAD FAILED. THE COMPLETE GEARBOX WAS REPLACED.Jul 14, 1996 · Snias AS350DSDR CA971128007Bearing · corroded(CAN) AFT PROPELLER SHAFT BEARING FOUND CORRODED.Jul 9, 1996 · Mtsbsi MU2B60SDR ERAA96267Gearbox Cover · leakingGEARBOX OVERHAULED ON CADORATH WORK ORDER M708 AND RETURNED TO ERA 6-13-96. TORQUE METER BUSHING LEAKING.Jun 27, 1996 · N297EH · Bolkms BO105SSDR CA960708007Bearing · cracked(CAN) THE REDUCTION GEARBOX (RGB) WAS SENT FOR INVESTIGATION AND REPAIR BECAUSE THE RGB WAS MAKING METAL. THE CAUSE OF THE RGB MAKING METAL WAS AN AXIAL CRACK ON THE INNER RACE OF THE #19 BEARING AND THE SPALLING OF THE #18 BEARING INNER RING PLAIN HALF.Jun 26, 1996SDR CA960614001Red Gr Box · making metal(CAN)METAL ON RH REDUCTION GEAR BOX CHIP DETECTOR. METAL ANALYSED AS BEARING MATERIAL. ENGINE REMOVED FOR REPAIRJun 14, 1996 · Dhav DHC8102SDR CA960620005Gearshaft · chipped(CAN) DURING LOGGING OPERATION, ENGINE CHIP WARNING, IMMEDIATE LANDING. CHIP DETECTOR HAD LARGE CHIP ON IT SIMILAR TO GEAR TOOTH. PLANETARY GEARSHAFT CHIPPED AT THE TIP OF THE SUNGEAR DRIVEN SPLINE.Jun 12, 1996SDR 96ZZZX3633Bearing · failedENGINE EXPERIENCED LOUD BANG AND EPR AND RPM WENT TO ZERO. ENGINE WAS REMOVED WITH INTERNAL AND EXTERNAL DAMAGE TO THE N2 GEARBOX. DISASSEMBLY OF THE GEARBOX REVEALED A FAILED BEARING. INVESTIGATION IS STILL UNDER WAY AT AVIALL.Jun 7, 1996SDR CA960612002Bearing · making metal(CAN)METAL FLAKES FOUND ON RGB CHIP DETECTOR. ANALYSIS SHOWED IT TO BE M-50 BEARING MATERIAL.Jun 6, 1996 · Dhav DHC8102SDR HEEA967338Gearbox · failedNR 2 ENGINE FAILED TO ENGAGE AFTER START, THEN ENGAGED WITH LOUD BANG AT N1 64 PERCENT.Jun 5, 1996 · N108X · Bell 412SDR CA960614024Bearing · spalled(CAN)REPORTED METAL ON THE CHIP DETECTOR. NOS.8, 9 & 15 BEARINGS SPALLED WITH #8 SHOWING THE MOST DAMAGE. THE CAGE OF #8 BEARING WAS BROKEN IN 2 PLACES AND HAD SECTIONS MISSING, SEVERAL ROLLERS WERE SEVERELY WORN. #15 BEARING HAD ELECTRICAL DISCHARGE PITTING WJun 5, 1996 · Emb EMB120SDR CA960614019Bearing · cracked(CAN)REDUCTION GEAR BOX CONTAMINATED WITH METAL. #19 BEARING INNER RACE CRACKED.May 30, 1996 · Emb EMB120SDR CA960521004Red Gearbox · failed(CAN)WHILE TAXIING IN PREPARATION FOR TAKEOFF, #1 ENGINE OIL PRESSURE DECAYED AND THE PROPELLER WENT INTO AN UNCOMMANDED FEATHER POSITION ENGINE SECURED AND RETURNED TO GATE. LARGE AMOUNT OF METAL FOUND ON THE REDUCTION GEAR BOX CHIP DETECTOR. ENGINE INSTALLEMay 15, 1996 · Dhav DHC7*SDR 96ZZZX3414Bearing · wornTHE ENGINE CHIP DETECTOR LIGHT ILLUMINATED IN-FLIGHT. THE TEAR-DOWN INSPECTION OF THE ENGINE REVEALED THE NR 3 AND NR 4 PINION BEARINGS ROLLER CAGES WERE EXCESSIVELY WORN. THESE BEARINGS ONLY HAVE 489.1 OPERATING HOURS SINCE NEW. THE OPERATOR BELIEVES THE 'May 15, 1996 · N710AL · Skrsky S76ASDR 96ZZZX3413Bearing · failedTHE ENGINE CHIP DETECTOR LIGHT ILLUMINATED IN CRUISE FLIGHT OVER THE GULF OF MEXICO. THE PILOT LANDED THE HELICOPTER ON NEAREST OFFSHORE PLATFORM, APPROXIMATELY 7 MILES AWAY. MAINTENANCE INSPECTED THE CHIP DETECTOR PLUGS AND FOUND THE LOWER PLUG COVERED WITHMay 15, 1996 · N177AL · Bell 206L4SDR 96ZZZX2919Idler Gear · failedDISASSEMBLY OF THE PROPELLER GEARBOX REVEALED THE LT IDLER GEAR (775753-5 ITEM 40 OF FIG 5 IN MANUAL 72-11-02) WEB FAILED AND THE GEAR HAD BROKEN THROUGH THE GEARBOX HOUSING. THE FORWARD INPUT ROLLER BEARING (775765-1 ITEM 180 OF FIG 8) HAD BROKEN AND THE ROLMay 10, 1996 · Saab SF340ASDR 96ZZZX4816Sun Gear · failedAN IN-FLIGHT SHUT DOWN OF THE LT ENGINE DUE TO THE FAILURE OF THE POWER SECTION. AT THE ENGINE TEAR DOWN, THE INVESTIGATION REVEALED THE 1ST STAGE SUN GEAR HAD FAILED AND IS BEING CONSIDERED THE CAUSE OF THE SHUT DOWN.May 7, 1996 · N157YV · Beech 1900CSDR S2YA960007Planet Gear · damagedTHE FLIGHT CREW FOUND THE LEFT PROP WOULD NOT FEATHER DURING A GROUND AUTOFEATHER TEST, THEY ALSO NOTICED LEFT ENGINE LOW OIL PRESSURE INDICATION WAS ILLUMINATED. AN ENGINE SHUTDOWN WAS MADE AND MAINTENANCE FOUND METAL PARTICLES IN THE OIL. THE ENGINE WAS REMay 2, 1996 · N841SK · Beech 1900DSDR AU960598Support · faulty(AUS) ENGINE TORQUE RING SUPPORT ASSEMBLY FAULTYMay 1, 1996 · Frchld SA227DCSDR 96ZZZX2817Bearing · wornBEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW 6 EACH UNITS, CORRECTED PROBLEM.May 1, 1996 · N5188B · Bolkms BK117B1SDR CA960424004Oil Filter · clogged(CAN)#1 ENGINE RGB CHIP DETECTOR AND OIL FILTER CLOGGED FLAG WARN. METAL FOUND IN CHIP DETECTOR AND FILTER ENGINE REPLACEDApr 23, 1996 · Dhav DHC8311SDR AU960659Gear · damaged(AUS) ENGINE REDUCTION GEARBOX 1ST STAGE SUN GEAR DAMAGED - RELATED PARTS HAD SECONDARY DAMAGE - ENGINE WAS FITTED TO MALAYSIAN AIRLINES 9M-MDOApr 23, 1996SDR 96ZZZX2934Seal · leakingDURING FLIGHT, THE TRANSMISSION PRESSURE CAUTION LIGHT ILLUMINATED. THE PRESSURE GAUGE INDICATED 30 PSI. DURING FINAL APPROACH, PRESSURE DROPPED TO 20 PSI AND TO 10 PSI DURING HOVER. UPON LANDING, PRESSURE RETURNED TO 25 PSI. AIRCRAFT WAS INSPECTED AND THEApr 23, 1996 · N177AL · Bell 206L4SDR CA960614017Bearing · spalled(CAN)REDUCTION GEAR BOX MAKING METAL. LEFT HAND #10 BEARING, ONE BALL SPALLED. REMAINING OIL IN THE GEARBOX WAS VERY DIRTY AND FOUND TO CONTAIN HIGH LEVELS OF PHOSPHORUS AND VANADIUM. SEVERAL OTHER BEARING S HAD PITS AND DISCOLORATION SIMILAR TO CORROSION THATApr 9, 1996 · Dhav DHC8102SDR HEEA966917Tube Assy. · defectiveENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF GEARBOX PARTS NOTED THE FOLLOWING: OIL TRANSFER TUBE FAILED DIMENSIONAL CHECK IN ACCORDANCE WITH CEB1307. INSTALLED A NEW OIL TUBE ASSEMBLY.Apr 4, 1996 · N5774M · Aerosp AS355F1SDR CA960614016Bearing · spalled(CAN)METAL ON THE REDUCTION GEAR BOX CHIP DETECTOR. #15 BEARING INNER RACE SPALLED. ELECTRICAL DISCHARGE PITTING ON #15 ROLLERS AND #18 BEARING LIKELY FROM STRAY ELECTRICAL DISCHARGE FROM SOME AIRCRAFT COM PONENT.Apr 4, 1996 · Aerosp ATR42*SDR CA960614015Bearing · spalled(CAN)REDUCTION GEAR BOX REPORTED MAKING METAL. #15 BEARING HAD SEVERE SPALLING ON THE ROLLERS AND OUTER RACE.Apr 1, 1996 · Aerosp ATR42*SDR AU960429Bearing · seized(AUS) LH ENGINE WAS SHUT DOWN AND FEATHERED FOR TRAINING PURPOSES - THE FEATHERED ENGINE CONTINUED TO ROTATE AT APPROXIMATELY 100RPM - INVESTIGATION FOUND THE MAIN OIL FILTER HEAVILY CONTAMINATED WITH METAL - CAUSED BY PLANET GEAR (PNO 3108207-01) BEARING AND Mar 26, 1996 · Stbros SD360SDR CA960412012Shim · misaligned(CAN)HIGH OIL CONSUMPTION. POWER SHAFT SHIMS MISALIGNED AT REINSTALLATION DURING INSPECTION IMMEDIATELY PRIOR TO OCCURRENCE CAUSING HIGH PRESS AIR TO INDUCE VENTING OF GEARBOX.Mar 23, 1996SDR 96ZZZX4704Gearbox · corrodedPITTED CORROSION ON RT GEARBOX BOSS OCCURRED DURING NORMAL OPERATION. FOUND DURING ROUTINE INSPECTION. RECOMMENDED SUPPLIER CHECK MATERIALS FOR DEFECTS. SIMILAR PROBLEM FOUND ON THREE GEARBOXES.Mar 22, 1996 · N722H · Bell 206L3SDR AU960509Gear · pitted(AUS) ENGINE SUFFERED A LIGHTNING STRIKE - DOME REMOVED AND GEARING FOUND TO BE PITTEDMar 15, 1996
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