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 98ZZZX1259Garlock Seal · leakingNEW PTO SEALS WERE INSTALLED IN REPAIRED GEARBOX. ENGINE WAS ASSEMBLED AND TESTED ON 11-06-97. AFTER TEST CELL RUN, FOUND AFT PTO SEAL BROKEN AT INNER LIP. NEW PTO SEALS ARE NOT AT SAME DIMENSIONS AS OLD (RED) PTO SEALS. NEW PTO SEALS ARE LARGER IN DIAMETENov 6, 1997SDR AU971626Bolt · failed(AUS) LH ENGINE REDUCTION GEARBOX FIRST STAGE PLANET GEAR CARRIER BOLT FAILED. INVESTIGATION FOUND THAT THE BOLT HEAD HAD SEPARATED AND ENTERED THE FIRST STAGE GEAR TRAIN. EXAMINATION OF THE CARRIER BOLTS REVEALED FOUR BOLTS FRACTURED IN THE THREADED AREA AND Nov 3, 1997 · Beech 1900DSDR AU971423Combining Grbox · making metal(AUS) ENGINE COMBINING GEARBOX METAL CONTAMINATION. SUSPECT CAUSED BY DETERIORATION OF BEARING CAGE.Nov 2, 1997 · Bell 412SDR 97ZZZX4769Gearbox · damagedPRIOR TO DISASSEMBLY, PROP SHAFT NOTED FROZEN IN PLACE. DISASSEMBLY REVEALED AFT HOUSING, OIL PUMP, RIGHT IDLER GEAR, RIGHT IDLER GEAR RETAINING NUT ALL HAVE EXTENSIVE DAMAGE. RIGHT IDLER GEAR NUT BACKED OFF ASSEMBLED POSITION. GEARBOX IS DEEMED SCRAP.Oct 31, 1997 · Saab SF340ASDR SI3R97012Roller Bearing · crackedDISASSEMBLY OF GEAR CASE REVEALED THE INPUT ROLLER BEARING RACE CRACKED, PINION GEAR BEARING SURFACE SPALLED, LEFT AND RIGHT IDLER GEAR RETAINING RINGS BROKE, AND NO TORQUE ON LEFT IDLER GEAR NUT. PINION, SN IC641356. INPUT BEARING, SN 9-259. REF: OPERATOROct 24, 1997 · Saab SF340ASDR SI3R97011Roller Bearing · crackedDISASSEMBLY OF GEAR CASE REVEALED THE FORWARD ROLLER BEARING INNER RACE CRACKED (PN 775757-1, ITEM 60 FIG 7). (X)Oct 24, 1997 · Saab SF340ASDR 97ZZZX4684Idler Gear Nut · loose torqueDISASSEMBLY OF GEAR CASE REVEALED THE INPUT ROLLER BEARING RACE CRACKED, PINION GEAR BEARING SURFACE SPALLED, LEFT AND RIGHT IDLER GEAR RETAINING RINGS BROKE, AND NO TORQUE ON LEFT IDLER GEAR NUT. PINION, SN IC641356. INPUT BEARING, SN 9-259. REF: OPERATOROct 24, 1997 · Saab SF340ASDR 97ZZZX4683Retainer Ring · brokenDISASSEMBLY OF GEAR CASE REVEALED THE INPUT ROLLER BEARING RACE CRACKED, PINION GEAR BEARING SURFACE SPALLED, LEFT AND RIGHT IDLER GEAR RETAINING RINGS BROKE, AND NO TORQUE ON LEFT IDLER GEAR NUT. PINION, SN IC641356. INPUT BEARING, SN 9-259. REF: OPERATOROct 24, 1997 · Saab SF340ASDR 97ZZZX4682Bearing · spalledDISASSEMBLY OF GEAR CASE REVEALED THE INPUT ROLLER BEARING RACE CRACKED, PINION GEAR BEARING SURFACE SPALLED, LEFT AND RIGHT IDLER GEAR RETAINING RINGS BROKE, AND NO TORQUE ON LEFT IDLER GEAR NUT. PINION, SN IC641356. INPUT BEARING, SN 9-259. REF: OPERATOROct 24, 1997 · Saab SF340ASDR 97ZZZX4861Bearing · failedENGINE REMOVED FROM SERVICE DUE TO IN-FLIGHT SHUT DOWN FOR LOW OIL PRESSURE. DISASSEMBLY REVEALED FAILURE OF OIL PUMP DRIVE GEAR FORWARD BEARING IN THE N2 GEARBOX. CAUSE OF THE BEARING FAILURE IS UNDER INVESTIGATION BY GREENWICH.Oct 23, 1997SDR 97ZZZX4656Gearbox · leakedREMOVED GEARBOX DUE TO TORQUEMETER PISTON PLUG LEAKING OIL AT A RATE OF ONE DRIP EVERY 4 SECONDS.Oct 17, 1997 · N108FH · Bell 206BSDR 97ZZZX4653Bearing · failedNR 1 ENGINE CHIP LIGHT CAME ON AFTER START-UP. MAINTENANCE FOUND PASTE ON UPPER AND LOWER CHIP PLUGS. CLEANED PLUGS, OIL SAMPLE WAS TAKEN; 1.2 HOURS LATER, NR 1 ENGINE CHIP LIGHT CAME ON AGAIN. MAINTENANCE REMOVED PLUGS. UPPER PLUG HAD CHIPS AND SLIVER. LOct 13, 1997 · N105RH · Bolkms BO105CSDR SI3R97010Roller Bearing · crackedDISASSEMBLY OF GEAR CASE REVEALED FORWARD ROLLER BEARING INNER RACE CRACKED (PN 775757-1, ITEM 60, FIG 7). (X)Oct 9, 1997 · Saab SF340ASDR SI3R97009Tab Washer · brokenDISASSEMBLY OF GEAR CASE REVEALED RIGHT IDLER GEAR FORWARD TAB WASHER WAS BROKEN AND CRACKED (PN 789578-1, ITEM 65B, FIG 1A). (X)Oct 9, 1997 · Saab SF340ASDR HEEA0011271Bolt · strippedPOWER SECTION OIL PUMP BOLT THREADS STRIPPED OUT OF GEARBOX AND EXCESSIVE CHAFING ON GEARBOX.Oct 8, 1997 · N5759N · Bell 412SDR CA971016018Input Pinion · spalled(CAN) RGB SENT FOR INVEST. AFTER A SPALLED INPUT PINION WAS FOUND DURING A BORESCOPE INSP FOLLOWING AN OVERTORQUE OF 170 PCT.DAMAGE CONFIRMED TO- INPUT PINION TEETH,THIS WAS ACCOMPANIED B Y FROSTING A SPALLING OF- TEETH OF BOTH 1ST STAGE HELICAL GEARS.3 NUTS FSep 26, 1997 · Dhav DHC8*SDR CA970930025Bearing · spalled(CAN) THE REDUCTION GEARBOX WAS FOUND BY THE OPERATOR TO HAVE METAL CONTAMINATION AND WAS SHIPPED FOR INVESTIGATION AND REPAIR. DISASSEMBLY FOUND THE SOURCE OF THE METAL CONTAMINATION TO BE THE NR15 BEARING WHICH HAD SPALLED BADLY ON THE INNER RACE. SUBSTANTIASep 19, 1997SDR PLGA970915APgb · failedBOS - FLT 4241 - ON CLIMB-OUT, THE LEFT PROP GEAR BOX OIL PRESSURE WENT TO MAXIMUM READING. AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND LEFT PGB OIL FILTER CONTAMINATED WITH METAL. REPLACED LEFT PGB. AIRCRAFT RETURNED TO SERVICESep 15, 1997 · N364BE · Saab 340BSDR ARWA970903Gearbox · failedNR 1 ENG SHUT DOWN (ON IT'S OWN) AT 4,000 AS 210KTS 15 MI FROM AIRPORT. UNABLE TO MOTOR ENGINE DUE TO SHARED SHAFT IN GEAR BOX, DISCOVERED CHIPS ON ACC GEARBOX PLUG. REMOVED AND REPLACED ENG DRIVEN GEARBOX. REMOVED AND REPLACED SCAVENGE OIL FILTER, OPS CHECSep 10, 1997 · N306GB · Lkheed 1011385115SDR SI3R97008Bearing · crackedDISASSEMBLY OF CASE REVEALED EXTENSIVE INTERNAL DAMAGE. CONDITIONS ARE NOT REPAIRABLE; THUS, THIS GEAR CASE IS CONSIDERED SCRAP. INITIAL EVALUATION OF HARDWARE FINDS POSSIBLE INITIAL BREAKDOWN DUE TO RIGHT IDLER AFT BEARING FAILURE, PN 775761-2.Sep 9, 1997 · Saab SF340ASDR CA970922002Idler Gear · worn(CAN) METAL FOUND IN CHIP DETECTORS CONDITION 3. ON TEARDOWN IDLER GEAR AND SPIRAL GEAR SHAFT (P/N 208313603) WERE FOUND BADLY WORN.Sep 9, 1997SDR CA970905005Bearing · spalled(CAN) THE REDUCTION GEARBOX WAS FOUND TO BE GENERATING METAL ANALYSED AS BEING M50.- RGB WAS SENT FOR INVEST. OF- METAL CONTAMINATION & RESTROATION. DISASSY OF- RGB FOUND- SOURCE OF THE METAL CONTAMINATION WAS DEFINITELY- SPALLING OF- NR15 BEARING ON ITS OUTERAug 27, 1997SDR CA971113040Gearbox · contamination(CAN) SCAVENGE OIL SYSTEM FAILURE. POSSIBLY MAKING METAL, REPLACED.Aug 20, 1997 · Hughes 369DSDR CA970904005Seal · leaking(CAN) OIL FOUND POOLING IN THE NR3 ENGINE SUPER CHARGER, NR9 SEAL REPLACED.Aug 20, 1997SDR SI3R97007Bearing · spalledDURING DISASSEMBLY OF GEARBOX, THE RIGHT FORWARD IDLER GEAR BEARING RACE AND ROLLERS WERE FOUND TO BE SPALLED. (P/N 775660-2, FIG 8, ITEM 85). HSS SO NR 63470SE. CUST: FLAGSHIP A/L. (X)Aug 19, 1997 · Saab 340BSDR CA980113001Seal · broken(CAN) PILOT REPORTED ERRATIC TORQUE INDICATIONS. GEARBOX REMOVED. PTO SEAL LIP FOUND TORN, AND PIECES OF BROKEN SEAL WERE BLOCKING TORQUE METER BLEED HOLE. THIS IS THIRD INCIDENT NOTED BY THIS O/H SHOP.Aug 18, 1997 · Bell 206BELLSDR SI3R97006Retain Nut · lost torqueDURING DISASSEMBLY OF GEARBOX, RETAINING NUT (P/N 775770-6) WAS REMOVED WITH NO OBTAINABLE TORQUE READING USING TORQUE FIXTURE. HSS SO NR 62971SE. CUST: WINGS WEST (X)Aug 15, 1997 · Saab 340BSDR SRAA970807Gear Box · decoupledDURING FLIGHT AT FL260 FROM AAB, NR 1 ENGINE HAD LOSS OF TORQUE, TIT INDICATION WENT TO 540 DEG WITH F/F TO 440 LBS AND GENERATOR OUT LIGHT CAME ON. SHUT DOWN NR 1 ENGINE AND LANDED WITHOUT INCIDENT AT RMS. INSPECTED NR 1 ENGINE AND SUSPECT GEARBOX FAILURE, Aug 13, 1997 · N910SJ · Lkheed 382ESDR 97ZZZX3716Bearing · making metalS.O.A.P. SAMPLE RETURNED MAJOR CARBON STEEL PLATELETS AND TRACE COPPER. DISASSEMBLY REVEALED BEARING SEPARATOR OUTSIDE DIAMETER TO OUTER RACE LAND CLEARANCE INSUFFICIENT RESULTING IN RUBBING. BEARING OUTER RACE HAS HEAT DISCOLORATION. BEARING S/N 0129. NOTJul 25, 1997SDR 97ZZZX3715Bearing · making metalS.O.A.P. SAMPLE RETURNED MAJOR CARBON STEEL PLATELETS AND TRACE COPPER. DISASSEMBLY OF ENGINE REVEALED BEARING SEPARATOR OUTER DIAMETER TO OUTER RACE LAND CLEARANCE INSUFFICIENT RESULTING IN RUBBING. BEARING OUTER RACE HAS HEAT DISCOLORATION. BEARING SERIALJul 25, 1997SDR 97ZZZX3828Coupler · insert looseNEW PART RECEIVED WITH INTERNAL SPLINE INSERT LOOSE. IF PART WAS INSTALLED IN ENGINE AND FAILED, ENGINE WOULD EITHER NTS WHILE RUNNING, OR NOT NTS UPON ENGINE IN-FLIGHT FAILURE.Jul 24, 1997SDR 97ZZZX3718Sungear · fatigueENGINE FAILED IN CRUISE. INVESTIGATION REVEALED THE FRACTURE OF THE RGB 1ST STAGE SUN GEAR FAILED DUE TO FATIGUE. THE ORIGINAL CAUSE OF THE FATIGUE COULD NOT BE DETERMINED. THE RGB DECOUPLING WAS CAUSED BY AN OVERSPEED CONDITION OF PT ROTOR RESULTING IN LIBJul 24, 1997 · N2FOR · Dhav DHC6300SDR CA970728003Transfer Sleeve · scored(CAN) DURING INSEPECTION OF THE REDUCTION GEAR NOSE CASE CHIP DETECTOR AND OIL SCREENS, SUBSTANTIAL AMOUNTS OF METAL PARTICLES WERE FOUND. THE ENGINE WAS REMOVED AND SENT FOR INSPECTION AND REPAIR. DISASSEMBLY REVEALED THE PROPELLER SHAFT TRANSFER SLEEVE HAD SJul 13, 1997 · Dhav DHC6100SDR 97ZZZX3577Cover · defectiveTOP STUD FOR TURBINE MOUNT WILL NOT TORQUE. COVER ONLY HAS 50.1 HOURS SINCE OVERHAULED. REMOVED AND REPLACED.Jul 10, 1997SDR CA970916003Planetary Gear · separated(CAN) DURING FLIGHT A CHIP DETECTOR LIGHT CAME ON NR2 ENGINE. THE ENGINE WAS SHUTDOWN AND THE FLIGHT CONTINUED TO DESTINATION. POST FLIGHT INSPECTION FOUND METAL IN THE OIL FILTER. THE ENGINE WAS SENT FOR INVESTIGATION AND DISASSEMBLY OF THE REDUCTION GEARBOX Jun 29, 1997 · Beech 200BEECHSDR HEEA0010199Combining Grbox · malfunctionGEARBOX CLUTCH MISENGAGEMENT WITHOUT AVAILABLE OR PHYSICAL (HELICOPTER JOLT) INDICATIONS. DURING START AT 20% N1 AT 5090N1.Jun 23, 1997 · Bell 412SDR CA970625010Bearing · spalled(CAN) REDUCTION GEARBOX WAS SENT FOR INVESTIGATION AFTER THE OPERATOR REPORTED IT WAS MAKING METAL. DISASSEMBLY OF THE REDUCTION GEARBOX FOUND THE CAUSE OF THE MAKING METAL WAS THE SPALLING OF THE #15 BEARING. THE #18 AND #19 BEARINGS AND THE OVERSPEED GOVERNOJun 13, 1997SDR CA970625009Spur Gearshaft · spalled(CAN) THE REDUCTION GEARBOX WAS SENT FOR REPAIR AFTER IT WAS FOUND MAKING METAL. THE SOURCE OF THE METAL WAS FOUND TO BE SPALLING OF ALL 3 OF THE SECOND STAGE GEARS. THERE WAS NO EVIDENCE OF DAMAGE FROM ELECTRICAL DISCHARGE OR LUBRICATION PROBLEMS. THERE WAS SJun 12, 1997SDR CA970620020Bearing · spalled(CAN) THE ENGINE WAS REMOVED DUE TO METAL CONTAMINATION IN THE REDUCTION GEARBOX. ON INITIAL DISASSEMBLY THERE WAS NO SIGN OF OBVIOUS DAMAGE WITH SIGNIFICANT MATERIAL LOSS UNTIL THE #18 BEARING WAS REMOVED. THE BEARING HAD SUBSTANTIAL SPALLING ON THE INNER RACJun 9, 1997SDR SI3R97003Bearing · spalledCHIP DETECTOR WAS SHOWING HEAVY CHIP CONTAMINATION. DISASSEMBLY OF GEAR CASE REVEALED THE PROPELLER SHAFT FORWARD ROLLER BEARING ROLLERS (GROUP 5 FIG 7 ITEM 60 IN CMM 72-11-02) WERE SPALLED. (X)Jun 5, 1997 · Saab SF340ASDR 97ZZZX2904Gearbox · crackedFOUND ENGINE GEARBOX CRACKED AT TOP MOUNTING LOCATION FOR COMPRESSOR. NO ABNORMAL VIBRATIONS OR CIRCUMSTANCES LED TO FINDING CRACK.Jun 2, 1997 · N16917 · Bell 206B3SDR CA970604011Bearing · spalled(CAN) REDUCTION GEARBOX WAS SENT FOR INVEST. DUE TO METAL CONTAMINATION. DISASSY FOUND- CAUSE OF- METAL CONTAMINATION WAS- #19 BEARING WHICH WAS SEVERELY SPALLED ON- INNER RACE WITH SUBSTANTIAL MATERIAL LOSS. THIS DAMAGE WAS MORE THAN SUFFICIENT TO EXPLAIN- MEMay 29, 1997SDR CA970605011Bearing · spalled(CAN) REDUCTION GEARBOX (RGB) WAS SENT FOR REPAIR AFTER REPORT THAT THE RGB WAS MAKING METAL. DISASSEMBLY REVEALED THE CAUSE OF THE RGB MAKING METAL WAS THE SPALLING OF THE #15 BEARING. THE #15 BEARING HAD ELECTRICAL PITTING SUGGESTING DAMAGE FROM ELECTRICAL DMay 26, 1997SDR AU970662Combining Grbox · faulty(AUS) ENGINE COMBINING GEARBOX FAULTY - SUSPECT FAULTY CARBON SEAL ALLOWED OIL TO TRANSFER INTO GEARBOX CAUSING OVERFILLING AND LOSS OF OIL OVERBOARDMay 26, 1997 · Bell 412SDR 97ZZZX3882Bearing · spalledENGINE WAS RECEIVED FOR MAKING METAL. CHIP ANALYSIS INDICATED METAL WAS COMING FROM GEARBOX. UPON DISASSEMBLY, FOUND THE PTO FORWARD BEARING TO HAVE SEVERE SPALLING OF BALLS AND RACES. ALSO, FOUND SEVERAL WORN BEARING LINERS IN THE GEARBOX CASE AND COVER.May 15, 1997SDR CA970513026Bearing · spalled(CAN) THE ENGINE WAS SENT FOR INVESTIGATION AFTER THE REDUCTION GEARBOX WAS FOUND WITH METAL CONTAMINATION. DISASSEMBLY FOUND THE CAUSE OF THE CONTAMINATION WAS THE SPALLING OF THE #15 BEARING. HIGH MAGNETISM ON SEVERAL COMPONENTS AND ELECTRICAL PITTING ON THEMay 1, 1997SDR CA970513025Bearing · spalled(CAN) THE ENGINE WAS SENT FOR INVEST. OF METAL CONTAMINATION & SUBSEQUENT OVERHAUL. DISASSY FOUND- #15 BEARING SEVERELY SPALLED ON ONE ROLLER WITH SUBSTANTIAL MATERIAL LOSS. THIS DAMAGE WAS MORE THAN SUFFICIENT TO EXPLAIN- METAL CONTAMINATION OBSERVED.-RE DOESMay 1, 1997SDR HAIHEEA9756Combining Gearbo · defectiveCOMBINING GR BOX BLOWING OIL OUT OF OUTPUT SECTION VENT TUBE.Apr 30, 1997 · N3131S · Bell 212SDR CA970507020Bearing · spalled(CAN) ENGINE WAS SENT FOR INVESTIGATION OF OIL LEAK AND METAL CONTAMINATION OF THE RGB. DISASSEMBLY OF THE RGB FOUND THE CAUSE OF THE METAL CONTAMINATION TO BE SPALLING OF THE #15 BEARING. THE EXTENSIVE MAGNETISM AND WIDESPREAD ELECTRICAL DISCHARGE PITTING DAMApr 30, 1997SDR HAIHEEA9627Gearbox · failedCOMBINING GR BOX LOW AND FLUCTUATING OIL PRESSURE.Apr 29, 1997 · N3893N · Bell 412
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