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 7201Fitting · crackedWHILE PERFORMING A LIFENET AAIP INSPECTION, THE MECHANIC FOUND A .7500 INCH (APPROX) CRACK EXTENDING FROM THE UPPER LEFT HAND T/R GEARBOX MOUNT HOLE INBOARD THROUGH AN ADJACENT RIVET HOLE TERMINATING AT A CORNER FILLET, ON THE MOUNT FITTING FOR THE TAIL ROTOR Nov 5, 2004 · N211SL · Bolkms BK117B1SDR CA041014001Magnetic Plug · crackedPILOT REPORTED INTERMITTENT INDICATION OF GEARBOX CHIP DETECTOR. ON INSPECTION NO CHIP FOUND. A LOOSE CONNECTION BETWEEN ELECTRICAL PORTION OF CHIP PLUG & MAGNETIC PART ALLOWED FOR A FALSE INDICATION. THE SWAGGED CONNECTION BETWEEN THE TWO PARTS CRACKED & BROct 13, 2004 · Urocop EC120BSDR KBM2004F00239Bearing · splitLAMINATED BEARINGS ARE SPLIT. REMOVED AND REPLACED.Oct 8, 2004 · N1188P · Snias AS350BASDR TXER097637Gearbox · making metalGEARBOX MAKING METAL.Oct 5, 2004 · N588BP · Aerosp AS355NSDR CA040914009Servo · leaking(CAN) AIRCRAFT IS CURRENTLY ON THAI REGISTRY BUT WE HAVE SUBMITTED THIS SDR AS THIS IS THE SECOND OCCURRENCE OF THIS TYPE IN THE PAST 2 YEARS. A/C RETURNED TO BASE REPORTING HYDRAULIC SYSTEM LIGHT. INVESTIGATION REVEALED TGB (OVERFILLED) IT WAS CONCLUDED TSep 10, 2004 · Skrsky S76ASDR ERAA097514Oil Cooler · damagedOIL COOLER CORE LEAKING EXCESSIVE OIL. UNIT EXHIBITED EXCESSIVE CORE DAMAGE, DIRTY CORE, DAMAGED FINE, EXCESSIVE CARBON AND DIRT AND WORN SEALS. A MATRIX CORE WAS INSTALLED, CLEANED, FLUSHED, OVERHAULED, WORN SEALS REPLACED, TESTED AND INSPECTED IAW DAR-8500Aug 24, 2004 · N421EH · Bell 412SDR I7LA0002739Gearbox · damagedREMOVAL OF TAIL ROTOR HUB AND BLADE ASSY. FOUND TAIL ROTOR GEARBOX OUTPUT SHAFT TO HAVE METAL TRANSFER TYPE DAMAGE TO SPLINE AREA. HEAT GENERATED FROM THE TAIL ROTOR TRUNION WAS ALSO EVIDENT.Aug 19, 2004 · N901HC · Agusta A109K2SDR ALGA097870Bearing · failedTAILROTOR GEARBOX DISASSEMBLED FOR CHIP LIGHT, FOUND DUPLEX BRG BREAKING DOWN. REPLACED WITH NEW.Aug 10, 2004 · N35WH · Bell 206B3SDR 2004FA0000689Shaft · failedTAIL ROTOR DRIVE FROM 90 GEARBOX TO TAIL ROTOR GEARBOX FAIL AT ATTACHING POINT IN TAIL ROTOR GEARBOX. BY THE DISCOLORATION OF THE BREAK IT APPEARS THAT IT HAD PARTIALLY CRACKED PRIOR TO TOTAL FAILURE. THIS CAUSED LOST OF DIRECTIONAL CONTROL OF AIRCRAFT. THEJun 23, 2004 · N9023Z · Hynes B2BSDR KBM2004F00118Control Tube · wornCHAFED CONTROL TUBE, WEAR SLEEVE WORN THRU, FURTHER INSPECTION OF TUBE FOUND WEAR TO BE WITHIN LIMITS. REPLACED ROD WITH SERVICEABLE UNIT. NEW HEATSHRINK OR WEAR SLEEVES INSTALLED.Jun 9, 2004 · N115SH · Snias AS350B2SDR KBM2004F00195Control Lever · debondedTAIL ROTOR GEARBOX BELLCRANK LEVER IS REMOVED DUE TO BUSHING DEBONDED. REINSTALLED BELLCRANK LEVER. BOND IS GOOD. REBONDED GS NEEDED PRIOR TO INSTALLATION.Jun 2, 2004 · N1188P · Snias AS350BASDR CA040517001Pinion Gear · worn(CAN) GEAR BOX ASSY HAD OIL SAMPLES TAKEN AFTER OVERHAUL FOR 1160.O HRS AND ALL OIL SAMPLES TAKEN WHERE NORMAL , AFTER INTERM REPAIR TO INPUT HOUSING ALL OIL SAMPLES TAKEN SHOWED SIGNS OF WEAR DUE TO ABNORMAL WEAR FOR 188.9 HOURS.May 10, 2004 · Snias AS350B2SDR CA040707001Seal · wornTAIL ROTOR GEARBOX CHIP DETECTOR HAS ILLUMINATED IN FLIGHT. THE GEARBOX WAS SUBSEQUENTLY REMOVED FROM AIRCRAFT, REPLACED WITH SERVICEABLE UNIT AND AIRCRAFT WAS RETURNED TO SERVICE. UPON DISMANTLING OF THE GEARBOX IT WAS DISCOVERED THAT THE SEALING LIP WORE TMar 12, 2004 · Bell 206BSDR S9HA092987Bellcrank · crackedEMERGENCY ACTIONS EXC. ENGINE SHUTDOWN AT CRUISE AT APPROX. 110 KTS PILOT FELT THE AIRCRAFT YAW. PUSHING IN T/R PEDALS HAD NO EFFECT. PILOT CONTINUED STRAIGHT AND LEVEL FLIGHT TO MAIN BASE AND NOTIFIED COMPANY OF SITUATION. AFTER 5 ABORTED ATTEMPTS PILOT EXEFeb 19, 2004 · N358NT · Aerosp AS355*SDR QS72004F00000Shaft · wornDURING ANNUAL INSPECTION FOUND KNURLED NUT WORN BEYOND LIMITS. UPON REMOVAL OF THE KNURLED NUT AND TAIL ROTOR BALANCE WHEEL FOUND THREADS ON TAIL ROTOR GEARBOX OUTPUT SHAFT, UNDER BALANCE WHEEL, EXCESSIVELY WORN AND GALLED. CUSTOMERS PILOT REPORTED THAT THEYFeb 11, 2004 · N921RB · Bell 206BSDR CA040212004Gearbox · making metal(CAN) T/R GEARBOX MAKING METAL. CHIPS DETECTED ON DETECTORS. REPLACED T/R GEARBOX.Feb 3, 2004 · Snias AS350BASDR BAQA092483Gearbox · making metalTAIL ROTOR GEARBOX REMOVED DUE TO METAL GENERATION, AND CASE HAS PITTING ON IT. HARDCARDS ENCLOSED. REPLACED WITH SERVICEABLE UNIT. 02/10/2004Jan 30, 2004 · N300CP · Bolkms BK117A1SDR HEEA092745Gearbox · corrodedREMOVED DUE TO EXCESSIVE CORROSION ON MAIN HOUSING IN AREA AROUND CHIP PLUG, AIR BREATHER VENT AND AT HOLES WHERE SAFETY WIRE IS ATTACHED TO HOUSING. GEARBOX WAS OVERHAULED AT T.T. 2575.00 ON FORM TRACKING AND W/O BH2122TN. SEND GEARBOX TO MFG FOR WARRANTY RJan 25, 2004 · N496PH · Clark 1000CLARKSDR KBM2005F00033Bearing · wornLAMINATED BEARING, WORN, REMOVED AND REPLACED. (K)Jan 19, 2004 · N313LV · Snias AS350B2SDR AC2A092336Stud · brokenGEARBOX HAD TWO BROKEN MOUNTING STUDS. REMOVED GEARBOX FROM AIRCRAFT AND REPLACED STUDS, CHECKED GEARBOX PER MANUFACTURERS LETTER AND RE-INSTALLED GEARBOX.Jan 8, 2004 · N430CV · Bell 430SDR CA040127022Housing · cracked(CAN) ALTHOUGH NOT REQUIRED AT THIS TIME, DUE TO THE ABNORMAL WEAR ON THE IP GEAR LARGE BEARING JOURNAL THE HOUSING WAS SENT OUT FOR ALIGNMENT AND NDT INSPECTION. THE RESULTS WERE RECEIVED RECENTLY FROM TRANSPORT APPROVAL FACILITY THAT THE GEARBOX HOUSING WASDec 23, 2003 · Hughes 369DSDR CA031223005Gear · unserviceable(CAN) CUSTOMER REPORTED METAL GEN. 51.2 HRS AFTER LAST REPAIR. REQUESTED THE RETURN OF THIS UNIT, AFTER DISASSEMBLY IT WAS NOTED THE I/P SPACER WAS WORN AGAIN, AN O/H DIMENSION CHECK (NOT REQUIRED AT THIS TIME) WAS CARRIED OUT AND THE I/P BEARING JOURNAL IS BEDec 12, 2003 · Hughes 369DSDR MDR03037Housing · crackedTHE TGB CENTER HOUSING WAS FOUND CRACKED WHILE INSTALLED ON THE AIRCRAFT. IT WAS REMOVED PREMATURELY ON SEPTEMBER 3, 2000. THE SHOP DETECTED THE CRACK VISUALLY. THE CRACK BEGAN AT THE SECOND ROSAN STUD CLOCKWISE FROM THE ROSAN SEAT PAD LOCATED 34 DEGREES FRNov 20, 2003 · N194AC · Skrsky S64ESDR MDR03036Housing · crackedTHE TGB CENTER HOUSING WAS FOUND CRACKED WHILE INSTALLED ON THE AIRCRAFT. IT WAS REMOVED PREMATURELY ON DECEMBER 20, 2000. THE SHOP DETECTED THE CRACK VISUALLY. THE CRACK BEGAN AT THE SECOND ROSAN STUD CLOCKWISE FROM THE ROSAN SEAT PAD LOCATED 34 DEGREES FRNov 20, 2003 · N223AC · Skrsky S64FSDR MDR03035Housing · crackedTGB CENTER HOUSING WAS FOUND CRACKED WHILE INSTALLED ON THE AIRCRAFT. IT WAS REMOVED PREMATURELY ON OCTOBER 20, 2000. THE SHOP DETECTED THE CRACK VISUALLY. THE CRACK BEGAN AT THE SECOND ROSAN STUD CLOCKWISE FROM THE ROSAN SEAT PAD LOCATED 34 DEGREES FROM CNov 20, 2003 · N164AC · Skrsky S64ESDR BAQA091301Gearbox · making metalTAIL ROTOR GEARBOX IS MAKING METAL. HARD CARD ENCLOSED. REPLACED WITH SERVICEABLE UNIT. PART BEING RETURNED.Nov 20, 2003 · N135MH · Urocop EC135T1SDR MDR03029Housing · crackedTGB CTR HSG FOUND CRACKED WHILE INSTALLED ON AC. IT WAS REMOVED PREMATURELY HAVING A TSO OF 974.7 HR. VISUALLY DETECTED INDIC IN OB WEB OF LT MOUNTING LUG. HSG WAS LOCALLY FPI INSPECTED TO VERIFY. NO IND WAS NOTED. AREA WAS STRIPPED, LIGHTLY ABRADED WITH SNov 20, 2003 · N223AC · Skrsky S64FSDR MDR03021Housing · crackedTHE TGB CENTER HOUSING WAS FOUND CRACKED WHILE INSTALLED ON AIRCRAFT. IT WAS REMOVED PREMATURELY, HAVING TSO 89.0 HOURS. THE SHOP DETECTED THE CRACK VISUALLY. THE CRACK BEGAN AT THE SECOND ROSAN STUD, CLOCKWISE FROM THE ROSAN SEAT PAD LOCATED 34 DEGREES FRONov 20, 2003 · N173AC · Skrsky S64ESDR CA031222005Gearbox · corroded(CAN) UNIT RECEIVED TO INSPECT FOR REPORTED METAL GENERATION. THE FOLLOWING WAS FOUND AT DISASSEMBLY. I/P GEAR 369D25434 U/S DUE TO SEVERE CORROSION PITS, O/P GEAR 369D 25430 ALSO PITTED BUT POLISHABLE. THE DUPLEX BEARINGS 369D25420 HAD NO CLAMP UP(.001-.003 INov 18, 2003 · Hughes 369DSDR MDR03034Gear · crackedTAIL ROTOR GEARBOX WAS REMOVED FROM AC FOR MAKING METAL. TAIL ROTOR GEARBOX WAS DISASSEMBLED IN THE OVERHAUL SHOP AND VISUALLY FOUND A CRACKED GEAR TOOTH ON THE OUTPUT GEAR. DURING THE MPI INSPECTION, WAS CONFIRMED THE TOOTH WAS CRACKED AND NO OTHER CRACKS WENov 18, 2003 · N159AC · Skrsky S64FSDR ERAA094451Shaft · scoredTAILROTOR SHAFTS SCORED. SENT FOR REPAIR. SHAFT BEYOND LIMITS. SCRAPPED IAW BO-105 MM CHAPTER 33 FIG 33-12 ACTION TAKEN: REMOVED AND SCRAPPED TAIL ROTOR SHAFT 5/1454. INSTALLED NEW SHAFT 5/2185 IAW BO-105 MM CHAPTER 33 PARA 33-22. REAMED BUSHINGS AS REQUNov 16, 2003 · N124EH · Bolkms BO105SSDR KBM2003F00100Bearing · tornTAIL ROTOR HUB HINGE LAMINATED BEARING TORN AND RIPPED. REPLAED WITH NEW BEARINGS.Nov 5, 2003 · N115SH · Snias AS350B2SDR CA031223004Gearbox · damaged(CAN) UNIT RECEIVED AFTER REPORT OF METAL GENERATION (UNIT INSPECTED AND REPORTED NO DEFECTS AND RETURNED). CUSTOMER WAS NOT PLEASED AS THEY HAVE REPORTED METAL GEN. IN THIS UNIT 5 TIMES PREVIOUS GEARBOX WAS NOT INSTALLED ON A/C IT WAS SHIPPED TO OUR FACILITOct 21, 2003 · Hughes 369DSDR CA031222003Gear · broken(CAN) UNIT RECEIVED TO INSPECT FOR REPORTED METAL GEN. (9 PREVIOUS REPORTS) REPAIRED BY FACILITY FAA REPAIR STATION 6 TIME (10 BEARINGS REPLACED) THEN OH. LAST REPORT WAS 104.6 HRS. AFTER OH, WHEN IT WAS OPENED THE INTERIOR HAD A THICK SLUDGE THROUGHOUT. I/POct 21, 2003 · Hughes 369DSDR CA031015013Gearbox · making metal(CAN) PILOT HAD AN TGB CHIP LIGHT INFLIGHT. LANDED AT HIS BASE FOR THE ENGINEER TO CHECK IT OUT. THEY FOUND A LOT OF A DARK GRAY SLUDGY SUBSTANCE WHICH PUT THE CHIP LIGHT ON. THEY DRAINED THE GEARBOX ANDDID A GROUND RUN FOR ABOUT .5 HOUR AND FOUND NOTHING (NOSep 25, 2003 · Snias AS350B2SDR CA031105005Support · cracked(CAN) FOREIGN OPERATOR NOTICED, DURING WALK AROUND, A ROUTINE MAINTENANCE CRACK ON THE TAIL ROTOR GEAR BOX/VERTICAL FIN SUPPORT ASSEMBLY. PART HAD 310 HOURS SINCE NEW. PART HAS BEEN REMOVED AND SENT FOR INVESTIGATION.Sep 22, 2003 · Bell 427SDR AUS20030871Bearing · broken(AUS) TAIL ROTOR GEARBOX PITCH CHANGE BEARING FAILED. PITCH CHANGESHAFT SERVO END NUT AND LOCKWASHER MISSING. SUSPECT FAILURE OF BEARING DUE TO CONTAMINATION BY H5606 ACTUATOR OIL CAUSING THE LUBRICATING CHARACTERISTICS OF THE SEALED BEARING TO CHANGE.Aug 29, 2003 · Snias AS332LSDR CA030903005Bearing · failed(CAN) AS DESCRIBED ABOVE ROLLER BEARING PN 369D25146 INNER RACE FAILURE. IN THIS CASE THIS FAILURE WAS DETECTED BY THE AIRCRAFTS WARNING SYSTEM. THE AIRCRAFT WAS FOR CED TO MAKE AN UNSCHEDULED LANDING. THE FAILURE OF THIS P/N BEARING HAS BEEN SEEN ON MORE THANAug 18, 2003 · Hughes 369ESDR BAQA088668Transmission · damagedTAIL ROTOR TRANSMISSION HAS BLACK PASTY RESIDUE ON CHIP PLUG WITH 3 SLIVERS OF FERROUS METAL APPROXIAMATELY 1/4 INCH LONG EACH.Aug 12, 2003 · N9024Z · Bolkms BK117A4SDR AUS20030885Shaft · bent(AUS) TAIL ROTOR GEARBOX OUTPUT SHAFT BENT.Aug 2, 2003 · Robsin R22BETASDR BAQA088677Servo · leakingTAIL ROTOR SERVO LEAKING AT SHAFT. REPLACED WITH SERVICEABLE UNIT.Jul 31, 2003 · N912KY · Aerosp AS355F2SDR KBM2003F00022Bearing · cutLAMINATE BEARINGS HAS MULTIPLE CUTS. REPLACED WITH NEW LAMINATE BEARING.(K)Jul 26, 2003 · N270SH · Snias AS350BASDR KBMA088821Bearing · wornLAMINATE BEARINGS WORN EXCESSIVELY. REPLACED WITH NEW.Jul 26, 2003 · N270SH · Aerosp AS355*SDR KBMA088820Bearing · wornLAMINATE BEARINGS WORN EXCESSIVELY. REPLACED WITH NEW.Jul 26, 2003 · N270SH · Aerosp AS355*SDR HEEA088641Bearing · wornTAIL ROTOR BEARING WORN. TO BE SENT TO VENDOR.Jul 17, 2003 · N972AE · Aerosp AS355*SDR HEEA088599Seal · leakingTAIL ROTOR HOUSING SEAL LEAKING. SHOP REPAIR.Jul 13, 2003 · N141BH · Bell 206L3SDR KBMA088152Bearing · wornTAIL ROTOR SPIDER END BALL BEARING WAS WORN BEYOND LIMITS. REPLACED WITH SERVICEABLE UNIT.Jul 2, 2003 · N345SH · Aerosp AS355*SDR ALGA087760Bearing · failedTAIL ROTOR TRANSMISSION REMOVED FOR METAL IN OIL, FOUND BEARING BREAKING DOWN. SUBMITTED BY: PRESTON BARZAREJun 25, 2003 · N687AL · Bell 407SDR ALGA087758Seal · leakingTAIL ROTOR GEARBOX OUTPUT SEAL LEAKED WHEN RUN-UP ON TEST STAND.Jun 25, 2003 · N917QS · Skrsky S76ASDR ALGA087757Seal · leakingTAIL ROTOR GEARBOX INPUT SEAL LEAKED WHEN RUN-UP ON TEST STAND.Jun 25, 2003 · N717AL · Skrsky S76A
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