JASC 6520

Service difficulty reports · 865

Reports filed under 6520 · Tail 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 = '6520'
  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 ERAA081155Gearbox · misrepairedHOUSING RECEIVED WITHOUT THREAD SEALANT. CHECKED GEARBOX OUT ON HOLD BOARD, C/W PRELIMINARY INSPECTION. NO DEFECTS NOTED, DRILLED OUT LOCKS ON 2 STUDS, APPLIED LOCKTITE AND REINSTALLED ORIGINAL STUDS WITH NEW LOCKS. ATTACHED ORIGINAL YELLOW TAG TO GEARBOX RESep 25, 2002 · Bolkms BO105CSDR AUS20021182Gearbox · making metal(AUS) TAIL ROTOR GEARBOX METAL CONTAMINATION.Sep 21, 2002 · Robsin R22BETASDR KBMA116014Bearing · crackedBEARINGS ARE SPLIT AND CRACKED. REPLACED WITH NEW BEARING.Sep 1, 2002 · N350SH · Snias AS350BASDR VY1R103157Bearing · failedBEARING, UNITS FAILED WITH 373.9 TT, REPLACED.Aug 28, 2002 · N6093R · Snias AS350B2SDR CA021029003Case · damaged(CAN) DURING A 600 HOUR INSPECTION OF AIRCRAFT, DAMAGE WAS FOUND ON THE UNDER SIDE OF THE T/R GEARBOX CASE. DUE TO A MIS-ALIGNMENT OF THE T/R PUSH PULL TUBE ADAPTER. DAMAGE WAS APPROX .020 DEEP & UPON INVESTIGATION IT WAS DETERMINED THAT PIN HAD EXCESSIVE WEARAug 25, 2002 · Hughes 369DSDR CA021002010Gearbox · damaged(CAN) DURING A SCHEDULED 600 HOUR INSPECTION. DAMAGE WAS FOUND ON THE UNDER SIDE OF TAIL ROTOR GEARBOX CASE DUE TO A MIS-ALIGNMENT OF THE T/R PUSH PULL TUBE ADAPTER. DAMAGE WAS APPROXIMATELY .020 DEEP AND UPON INVESTIGATION IT WAS DETERMINED THAT PIN HAD EXCAug 25, 2002 · Hughes 369DSDR YT2R110924Gearbox · making metalGEARBOX MAKING METAL.Aug 12, 2002 · N5806B · Snias AS350BSDR YT22002F00000Gearbox · making metalGEARBOX MAKING METAL.Aug 12, 2002 · N5806B · Snias AS350BSDR CA020801012Bevel Gear · failed(CAN) TAILROTOR GEARBOX BEVEL GEAR - LOSS OF TORQUE ATTACHING IT TO THE OUTPUT DRIVE SHAFT - ALL THE BOLTS WERE LOOSE CAUSING EXTREME BACKLASH IN GEAR SET. FOUND DURING GEARBOX REMOVAL/INSTALLATION. THE INPUT PINION, OUTPUT BEVEL GEAR, OUTPUT SHAFT ALL SCRAPEJul 24, 2002 · Snias AS350B1SDR CA020828009Bearing · cracked(CAN) M/R TRANSMISSION CHIP LIGHT WAS REPORTED. CHIP PLUGS INSPECTED AND FOUND TO HAVE LARGE AMOUNT OF DEBRIS. SOURCE FOUND TO BE THE T/R O/P PINION ROLLER BEARING. THE INNER RACE WAS FOUND TO BE CRACKED AND HEAVY SPALLING WAS ALSO OCCURRING. THIS INNER RACE IJul 1, 2002 · Hughes 369ESDR KBMA117650Bearing · wornBEARINGS ARE WORN. REMOVED AND REPLACED WITH NEW BEARINGS.Jul 1, 2002 · N345SH · Snias AS350B2SDR HEEA080229Spline Adapter · wornTAIL ROTOR SPLINE ADAPTER HAS WORN SPLINES.Jun 27, 2002 · N499PH · Bell 407SDR HEEA080228Spline Adapter · wornTAIL ROTOR SPLINE ADAPTER HAS WORN SPLINES.Jun 27, 2002 · N402PH · Bell 407SDR HEEA080320Bearing · wornSEVERE VIBRATION DURING FLIGHT. WORN FEATHERING BEARINGS. REPLACED PARTS AND REPAIRED.Jun 26, 2002 · N8765J · Bolkms BK117A1SDR HEEA080172Trunnion · wornTAIL ROTOR GEARBOX TRUNNION WORN.Jun 26, 2002 · N404PH · Bell 407SDR HEEA080318Spline Adapter · wornWORN PITCH SHAFT SPLINES AND CORROSION ON CASE. REPAIRED.Jun 25, 2002 · N5031U · Bolkms BO105SSDR CA020828007Bearing · cracked(CAN) M/R CHIP LIGHT WAS REPORTED. CHIP PLUGS INSPECTED AND FOUND TO HAVE LARGE AMOUNT OF DEBRIS. SOURCE FOUND TO BE THE T/R O/P PINION ROLLER BEARING. THE INNER RACE WAS FOUND TO BE CRACKED AND HEAVY SPALLING WAS ALSO OCCURRING. THIS INNER RACE IS PRESSED ONTJun 18, 2002 · Hughes 369DSDR HEEA080303Bushing · wornTAIL ROTOR GEARBOX HAS A WORN BUSHING. REPAIRED.Jun 11, 2002 · N911TL · Bolkms BK117A1SDR CA020610008Case · damaged(CAN) DURING AN OVERHAUL ON MODEL 407 GEARBOX ASSEMBLY, WHICH AS THE SAME DETAIL CASE ASSEMBLY PART NUMBER AS THE MODEL 427,IT WAS FOUND THAT AN OIL PASSAGE WAS MISSING IN THE GEARBOX HOUSING BEARING BORE OF THE INPUT SHAFT DUPLEX BEARING. AFTER INVESTIGATION,Jun 10, 2002 · Bell 427SDR KBMA117627Bushing · wornSPLIT BUSHING WORN ON TAIL ROTOR SPIDER. REPLACED WITH SERVICEABLE SPIDER ASSEMBLY.Jun 10, 2002 · N313LV · Snias AS350B2SDR HEEA079551Gearbox · vibrationTAIL ROTOR GEARBOX HUM DETECTED. ABNORMALITY ON OUTPUT GEAR. REPLACED WITH SERVICEABLE PART.May 28, 2002 · N142PH · Bell 412SDR HEEA079550Seal · leakingTAIL ROTOR GEARBOX HAS A LEAKING INPUT SEAL. REPLACED WITH SERVICEABLE PART.May 28, 2002 · N5759N · Bell 412SDR HEEA079549Gearbox · leakingGEARBOX LEAKING. REPLACED WITH SERVICEABLE PART.May 28, 2002 · N5759N · Bell 412SDR HEEA079548Gearbox · leakingLEAK OUTPUT SHAFT SEAL. REPLACED SEAL AND RETURNED TO SERVICE.May 28, 2002 · N2258F · Bell 412SDR HEEA079547Seal · leakingTAIL ROTOR GEARBOX HAS A LEAKING INPUT SEAL. REPLACED SEAL AND RETURNED TO SERVICE.May 28, 2002 · N2149S · Bell 412SDR HEEA079396Housing · leakingTAIL ROTOR SEAL HOUSING ON GEARBOX LEAKS. REPLACED WITH SERVICEABLE PART.May 28, 2002 · N7074W · Bell 206L4SDR HEEA079163Seal · leakingTAIL ROTOR GEARBOX INPUT SEAL HAS AN OIL LEAK.May 23, 2002 · N612PH · Bell 407SDR HEEA079161Seal · leakingTAIL ROTOR GEARBOX INPUT SEAL LEAKING.May 23, 2002 · N447PH · Bell 407SDR HEEA078902Shaft · peelingPAINT PEELING FROM SHAFT.May 13, 2002 · N457PH · Bell 407SDR HEEA078900Spline Adapter · wornSPLINE ADAPTER HAS WORN SPLINES.May 13, 2002 · N4999 · Bell 407SDR HEEA078832Case · corrodedTAIL ROTOR GEARBOX HAS EXCESSIVE PITTING BETWEEN CHIP DETECTOR AND RIGHT FORWARD MOUNTING STUD.May 7, 2002 · N493PH · Bell 407SDR CA020828008Bearing · cracked(CAN) DURING A SEAL CHANGE A CRACK WAS DETECTED ON THE INNER RACE OF THE T/R O/P PINION ROLLER BEARING. THIS INNER RACE IS PRESSED ONTO THE PINION WITH AN INTERFERENCE FIT.Apr 20, 2002 · Hughes 369DSDR YTRR078432Trunnion · wornTRUNNION WAS FOUND WORN BEYOND LIMITS DURING A 100 HR A/F INSPECTION.Apr 10, 2002 · N207RT · Bell 206L4SDR HEEA078630Bearing · crackedTAIL ROTOR BEARING HAS RUBBER CRACKED AND DETERIORATED ON BEARING. SCRAPPED PER AEC.Mar 26, 2002 · N971AE · Snias AS350BSDR HEEA078314Gearbox · corrodedTAIL ROTOR GEARBOX SPLINES PITTED ON OUTPUT SHAFT.Mar 21, 2002 · N457PH · Bell 407SDR HEEA078313Gearbox · corrodedTAIL ROTOR GEARBOX OUTPUT SHAFT SPLINES CORRODED.Mar 21, 2002 · N417PH · Bell 407SDR HEEA078206Seal · leakingTAIL ROTOR GEARBOX IS LEAKING.Mar 11, 2002 · N407PH · Bell 407SDR ALG2002F00033Shaft · wornDURING REPAIR FOR LEAKING OUTPUT SEAL, FOUND SPLINES ON OUTPUT SHAFT WORN BELOW LIMITS, READING 1.3025, MIN 1.3035 (SHAFT SPLINES SOFTER METAL THAN TRUNNION SPLINES.)Mar 2, 2002 · N687AL · Bell 407SDR CA030610003Tube · cracked(CAN) THE TUBE ASSEMBLY WAS REMOVED DURING A NORMAL INSPECTION AND FOUND TO HAVE EXCESSIVE WEAR ON THE SEAL JOURNAL. THE TUBE WAS SENT TO A REPAIR STATION TO HAVE THE JOURNAL REPLATED IAW TB 205-91-89. THE TUBE WAS INSPECTED BY MAGNETIC PARTICAL INSPECTION Mar 1, 2002 · Bell 205A1SDR HEEA078110Gearbox · wornTAIL ROTOR GEARBOX HAS WORN SPLINES.Mar 1, 2002 · N740PH · Bell 407SDR HEEA078099Spline Adapter · wornTAIL ROTOR SPLINE ADAPTER SHAFT ASSY WORN. SCRAPPED IN HOUSE.Feb 26, 2002 · N491PH · Bell 407SDR HEEA077879Seal · leakingTRANSMISSION SUPPORT SEAL LEAKING.Feb 19, 2002 · N490PH · Bell 407SDR HEEA077869Shaft · corrodedEXCESSIVE CORROSION ON OUTPUT SHAFT DRIVE SPLINES.Feb 19, 2002 · N494PH · Bell 407SDR HEEA077866Seal · leakingTAIL ROTOR INPUT SEAL LEAKING.Feb 19, 2002 · N407PH · Bell 407SDR HEED089083Gearbox · vibrationUNEXPLAINED TAIL ROTOR VIBRATION AND GRITTY SUBSTANCE IN GEARBOX. REPLACE UNIT.Feb 14, 2002 · N407XM · Bell 407SDR 2002FA0000350Pinion Gear · roughTEETH ON RING AND PINION DO NOT HAVE A POLISHED FINISH ON FACE OF TEETH. SURFACE IS NOT SMOOTH.Jan 29, 2002 · Snias AS350B2SDR 2002FA0000349Gear · roughTEETH ON RING AND PINION DO NOT HAVE A POLISHED SURFACE ON FACE OF TEETH. SURFACE IS NOT SMOOTH.Jan 28, 2002 · Snias AS350B2SDR HEEA077758Gearbox · vibrationTAIL ROTOR GEARBOX PRODUCING HIGH FREQUENCY VIBRATION.Jan 28, 2002 · N496PH · Bell 407SDR HEEA077744Gearbox · corrodedTAIL ROTOR GEARBOX SHAFT SPLINES PITTED.Jan 28, 2002 · N499PH · Bell 407SDR HEEA077464Rod End Bearing · wornPITCH CONTROL ROD SPHERICAL BEARING WORN.Dec 11, 2001 · N855PH · Snias AS350B
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