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 20010314CW004Flange · wornDURING T INSPECTION, FOUND BOLTS ATTACHING SLIDING FLANGE TO FLEXIBLE COUPLING HAVE LOW TORQUE. COTTER KEYS WERE INSTALLED. SLIDING FLANGE AND FLEXIBLE COUPLING HAVE GROOVES WORN ON ATTACHING SURFACE. REPLACED SLIDING FLANGE, FLEXIBLE COUPLING, AND ATTACH HJan 26, 2001 · N272NE · Aerosp AS365N2SDR KBMA99419Bearing · wornBEARING WORN.Jan 9, 2001 · N350SH · Snias AS350BASDR 20010124CW010Gearbox · failedGEARBOX REMOVED DUE TO FAILING SOAP/OIL ANALYSIS/ OF IRON-18.0 AND MAGNESIUM/ 73.2/SAMPLE TAKEN 12-18-00. PREVIOUS SAMPLE TAKEN 12-5-00 HAD IRON AT /3.8/ AND MAGNESIUM AT /10.9/ ALL VALVES ARE IN PARTS PER MILLION.Jan 9, 2001 · N365DU · Aerosp AS365N2SDR 20010124CW008Bearing · failedMANUFACTURER TEARDOWN OF GEARBOX, FOUND PITCH CHANGE SHAFT DUPLEX BEARING FAILURE AND SHAFT SHEAR T/R BLADES IN-NEG-PITCH WITH NO CONTROL OF TAIL ROTOR.NOTE: NO T/R GEARBOXES INSTALLED ON ANY 365 IN OUR FLEET HAVE ELECTRONIC CHIP DETECTOR.Jan 9, 2001 · N89SM · Aerosp SA365N1SDR TI1R001388Transmission · making metalTAIL ROTOR TRANS, CHIP LIGHT ILLUMINATED, FOUND SEVERAL LARGE FLAT FLAKES ON PLUG. REMOVED AND REPLACED.Jan 7, 2001 · N317MC · Bolkms BK117C1SDR 20010130CW009Gearbox · failedINITIAL GRND RUN-UP, AFTER MJR INSP, A T/R GBX FAILURE WAS EXPERIENCED AFTER APPROX 15-20 MINUTES. AC JERKED SEVERAL TIMES ALONG THE YAW AXIS, WITH NR1 ENG RUNNING AT 68%NG AND NR2 AT 65%NG AN UNUSUAL NOISE WAS HEARD FRM TAIL ROTOR, SHUT DOWN WAS INITIATED,Jan 5, 2001 · N911UF · Aerosp SA365N1SDR CA001106007Mount · failed(CAN) CRACK RADIATING ACROSS REAR PORT SIDE ATTACHMENT HOLE FOR THE TAIL ROTOR GEARBOX STUDS. (X)Oct 20, 2000 · Bell 206BSDR 20000920SH026Shaft · shearedPILOT HAD JUST ARRIVED AT A FIELD TO SPRAY AND WAS DOING A 180 DEGREE TURN WHEN HE LOST TAIL ROTOR FUNCTION. SHAFT FAILED IN TAIL ROTOR GEARBOX. (X)Aug 31, 2000 · N67083 · Bell 47G2SDR 20001030SH024Spider · looseEXCESSIVE PLAY ON TR SHAFT ASSY. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)Aug 26, 2000 · N52281 · Snias AS350B3SDR 20000830SH030Shaft · brokenDUE OVERHAUL. HEX BROKEN OFF CONTROL SHAFT TIP ON TAIL ROTOR HEAD SIDE. REMOVED AND REPLACED GEARBOX. RETURNED TO OVERHAUL CENTER. (X)Aug 3, 2000 · N365WM · Aerosp AS365N2SDR 20000608SH024Spider · undertorquedAFTER THE LAST FLIGHT OF THE DAY, INSP REVEALED TAIL ROTOR SPIDER ASSY LOSS OF TORQUE AT CASTELLATED NUT SECURING SPIDER ASSY. THIS FINDING PROMPTED REMOVAL AND REPLACEMENT OF SPIDER ASSY WITH SERVICEABLE COMPONENT. SPIDER ASSY P/N 350A33.2004.06. TT IN SERVJun 1, 2000 · N147BH · Snias AS350BSDR CA000706035Casting · cracked(CAN) CRACK FOUND AT AFT CASTING WHERE TAIL ROTOR GEARBOX MOUNTS IN TAILBOOM ON R/H HOLE. CASTING REMOVED BY OVERHAUL SHOP FOR REPLACEMENT AND CRACK ALSO LOCATED IN LT MOUNTING AREA. CRACK WAS FOUND ON SCHEDULED 100 HOUR INSPECTION OF AIRCRAFT.May 4, 2000 · Bell 206BSDR 20000505SH030Gear · brokenPILOT REPORTED NOT BEING ABLE TO SEE OIL LEVEL IN SIGHT GLASS. WHEN SIGHT GLASS REMOVED, A PIECE OF GEAR SET (TOOTH) ABOUT .4375 INCH LONG WAS FOUND INSIDE. ACFT HAD RETURNED FROM FLYING, AND THERE WAS NO VIBS OF NOISE. WEAR MARKS ON BROKEN PART GAVE APPEAApr 18, 2000 · N5691W · Enstrm 280CSDR 20000605SH009Bearing · wornROD END WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)Apr 5, 2000 · N101LN · Snias AS350B2SDR 20000605SH014Spider · stuckPITCH CHANGE, SPIDER ASSEMBLY - STICKS ON PEDAL MOUNT. BEARING HAS EXCESS PLAY. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)Mar 29, 2000 · N350RM · Snias AS350DSDR HEEA067652Spider · looseTAIL ROTOR SPIDER BEARING RETAINER LOOSE.Mar 23, 2000 · N971AE · Snias AS350B3SDR LS1R066421Bearing · damagedBEARING SLINGING GREASE.Feb 23, 2000 · N52AG · Bell UH1HSDR LS1R066420Bearing · damagedBEARING SLINGING GREASE.Feb 23, 2000 · N52AG · Bell UH1HSDR LS1R066419Bearing · damagedBEARING SLINGING GREASE.Feb 23, 2000 · N52AG · Bell UH1HSDR HEEA066537Spider · wornAD 99-09-06 WAS COMPLIED WITH AT AIRCRAFT TOTAL TIME 1060:30 HOURS, PART WAS REMOVED FROM AIRCRAFT FOR BEARING PLAY AND SLING GREASE AT 1219:40 HOURS. P/N 704A33-651-190, S/N 1448 BEARING HAS TOTAL TIME 159:10 HOURS.Feb 23, 2000 · N40466 · Snias AS350B2SDR 2000ZZZX828Pinion Gear · failedAIRCRAFT WAS FLYING WHEN A NOISE WAS HEARD. A PRECAUTIONARY LANDING WAS MADE. THE PROBLEM WAS A BROKEN GEAR IN THE MAIN TRANSMISSION. THE BROKEN PART WAS SENT TO THE MANUFACTURER FOR EVALUATION.Feb 22, 2000 · N4575Z · Hughes 369DSDR HEEA066535Rod · wornWORN BEARING ON PITCH CONTROL ROD. SERIAL NUMBERS REMOVED ARE S3986 AND S2860. REPLACED WITH SERIAL NUMBERS S1783 AND S1800.Feb 18, 2000 · N60951 · Snias AS350B2SDR HCMA066409Hinge · wornHINGE WORN BEYOND LIMITS AND CAUSES A T/R VIBRATION.Feb 17, 2000 · N422B · Snias AS350BASDR HEEA066502Gearbox · leakingTAIL ROTOR GEARBOX LEAKING.Feb 15, 2000 · N723PH · Bell 407SDR 20000413SH024Bearing · delaminatedBEARING CRACKED ON OUTER CENTER OF LAMINATION. REMOVED AND REPLACED. (X)Feb 14, 2000 · N350AZ · Snias AS350B2SDR 20000605SH012Rod · wornPITCH CONTROL ROD WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)Feb 11, 2000 · N102LN · Snias AS350B2SDR HEEA065867Spider · crackedSPIDER ASSY CRACKED.Feb 3, 2000 · N950AE · Snias AS350BSDR AGQA065679Coupling · chippedCOUPLING HAS CHIPPED TOOTH.Jan 28, 2000 · N53AG · Bell UH1HSDR AGQA065673Gearbox · wornT/R GEARBOX IS WORN EXCESSIVELY.Jan 24, 2000 · N500DC · Hughes 369DSDR AGQA065668Pitch Control · chippedSPLINE TEETH ARE BROKEN AND CHIPPED.Jan 24, 2000 · N500DC · Hughes 369DSDR AGQA065551Bearing · wornBEARING WORN.Jan 6, 2000 · N5211R · Hughes 369DSDR 2000ZZZX754Bushing · wornWORN SPLIT BUSHINGS BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 4, 2000 · N911LR · Snias AS350B2SDR 20000412SH020Seal · leakingDURING INSPECTION, FOUND THE TAIL ROTOR OUTPUT SEAL LEAKING. REPLACED SEAL. (X)Jan 4, 2000 · N5074R · Hughes 369DSDR 2000ZZZX496Seal · leakingLEAKING AT INPUT SEAL BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Dec 20, 1999 · N52285 · Snias AS350B3SDR HEEA065452Seal · leakingSEAL LEAKING. PART SCRAPPED IN HOUSE.Dec 17, 1999 · N8595X · Bell 407SDR HEEA065451Seal · leakingSEAL LEAKING.Dec 17, 1999 · N467PH · Bell 407SDR HEEA065442Adapter · wornADAPTER HAD WORN SPLINES.Dec 17, 1999 · N4999 · Bell 407SDR HEED065717Bearing · crackedBEARING CRACKED.Dec 14, 1999 · N236X · Bell 230SDR HEED065710Seal · leakingSEAL LEAKING AT TAIL ROTOR GEARBOX.Dec 14, 1999 · N3193E · Bell 407SDR HEEA065368Adapter · wornOIL PUMP SPLINES WORN.Dec 9, 1999 · N407MM · Bell 407SDR HEEA065287Gearbox · leakingOIL LEAK FROM PITCH CHANGE OUTPUT SHAFT.Nov 23, 1999 · N57416 · Bell 407SDR 2000ZZZX759Spider Gear · wornEXCESSIVE PLAY BETWEEN SLIDER AND CONTROL TUBE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Nov 20, 1999 · N104LN · Snias AS350B3SDR 99ZZZX4597Case · crackedMAIN SUPPPORT CASE AFT LEFT MOUNTING EAR IS CORRODED AND CRACKED ACROSS MOUNT BOLT BUSHING.Nov 11, 1999 · N169EH · Bell 412SDR HEEA064967Seal · leakingSEAL LEAKING.Nov 5, 1999 · N57416 · Bell 407SDR HEEA064937Adapter · wornSPLINES WORN.Nov 2, 1999 · N447PH · Bell 407SDR CA000110001Bearing · making metal(CAN) INPUT ALIGNMENT BEARING MAKING METAL. GEARBOX STRIPPED TO DETERMINE CAUSE OF PROBLEM.(CHIP LLTE IN FLIGHT)Nov 1, 1999 · Hughes 369FFSDR HEEA064898Gearbox · making metalTAIL ROTOR GEARBOX HAD WEAR ON OUTPUT SHAFT AND CHROME PEELING.Oct 26, 1999 · N4000L · Snias AS350B2SDR HCMA066354Hinge · tornBEARINGS TORN BEYOND LIMITS.Oct 20, 1999 · N997BH · Snias AS350B2SDR HCMA066350Hinge · tornHINGE TORN BEYOND LIMITS.Oct 20, 1999 · N992BH · Snias AS350B2SDR HCMA066348Hinge · tornBEARINGS TORN BEYOND LIMITS.Oct 20, 1999 · N862BH · Snias AS350BA
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