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 HEEA0011734Bevel Gear Set · making metalBEVEL GEAR SET CAUSE OF METAL IN OIL.Oct 31, 1997 · N81832 · Bolkms BO105SSDR 98ZZZX1580Bearing · delamiantedBEARING REMOVED DUE TO DELAMINATION IN EXCESS OF LIMITS. REPLACED WITH NEW PART.Oct 17, 1997 · N31AS · Snias AS350B2SDR HEEA0011537Bearing · separationBEARING SEPARATION.Oct 16, 1997 · N40466 · Snias AS350B2SDR CA971028009Gearbox · failed(CAN) TAIL ROTOR GEARBOX MAGNETIC CHIP DETECTOR ILLUMINATED DURING CRUISE JUST AFTER TAKEOFF. A LOT OF SHAVINGS AND CHIPS FOUND. PLUG CLEANED. AIRCRAFT RUN-UP, SHUTDOWN AND CHECKED. MORE METAL FOUND. GEARBOX SENT FOR CHECK.Oct 15, 1997 · Snias AS350B2SDR HEEA0011495Spider · defectiveVIBRATION. T/R SPIDER DEFECTIVE.Oct 14, 1997 · N40466 · Snias AS350B2SDR HEEA0011491Chip Detector · faultyT/R GEARBOX OIL DRAINS WHEN CHIP DETECTOR PULLED.Oct 14, 1997 · N230UN · Bell 230SDR HEEA0011484Bearing · wornT/R GRBOX BEARING WORN.Oct 14, 1997 · N4000L · Snias AS350B2SDR HEEA0011483Bearing · separationT/R GR BOX BEARING SEPARATION.Oct 14, 1997 · N6097Z · Snias AS350B2SDR HEEA0011482Bearing · separatedT/R GR BOX BEARING SEPARATED.Oct 14, 1997 · N350BZ · Snias AS350B2SDR HEEA0011467Tail Rotor Spide · wornT/R SPIDER BEARING WORN.Oct 14, 1997 · N6097Z · Snias AS350B2SDR HEEA0011459Bearing · separationT/R GR BOX BEARING RUBBER SEPARATION.Oct 14, 1997 · N6100R · Snias AS350B2SDR HEEA0011362Gear Housing · defectiveMISSING ETCHED "B" DIMENSION.Oct 9, 1997 · N81832 · Bolkms BO105SSDR 98ZZZX1643Bearing · delaminatedBEARING REMOVED DUE TO DELAMINATION IN EXCESS OF LIMITS. REPLACED WITH NEW BEARINGS.Oct 9, 1997 · N333AS · Snias AS350B2SDR 97ZZZX5080Bearing · mismanufacturedTOLERANCES TOO TIGHT, WOULD NOT FIT ON SHAFT CORRECTLY. REMOVED AND REPLACED.Oct 8, 1997 · Bolkms BK117A3SDR HEEA0011127Bearing · separationBEARING SEPARATION.Oct 1, 1997 · N350BZ · Snias AS350B2SDR HEEA0011037Housing · leakingT/R GEARBOX LEAKING OIL AT CONTROL HOUSING ASSEMBLY SEAL.Sep 12, 1997 · N407PH · Bell 407SDR HEEA0011035Bearing · separationBEARING SEPARATION.Sep 12, 1997 · N4000L · Snias AS350B2SDR 97ZZZX4703Laminated Hinge · wornLAMINATED HINGE ELASTOMERICS WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM.Sep 11, 1997 · N94LG · Snias AS350B2SDR 97ZZZX4700Laminated Hinge · wornLAMINATED HINGE WORN. T/R EXPERIENCED 1.1 IPS VIBRATION AND 'J' GAPS WERE UNEVEN. REPLACED WITH 2 EACH NEW UNITS FROM KIT 350A33-2153-00, CORRECTED PROBLEM.Sep 4, 1997 · N6099P · Snias AS350B2SDR 97ZZZX4696Laminated Hinge · wornLAMINATED HINGE ELASTOMERICS WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS FROM KIT 350A33-2153-00, CORRECTED PROBLEM.Aug 28, 1997 · N22UM · Snias AS350BSDR CA971015046Gearbox · preloading(CAN) TAIL ROTOR GEARBOX PITCH CHANGE SHAFT PRE-LOADING TO ONE SIDE WHEN PITCH CHANGE LINKS ARE TORQUED CAUSING VIBRATION.Aug 25, 1997 · Bell 206BSDR 98ZZZX1263Spherical Stop · defectiveBULGES IN T/R SPHERICAL STOP.Aug 23, 1997 · N126TV · Snias AS350B2SDR HEEA0010840Gearbox · leakingTAIL ROTOR GEARBOX IS LEAKING EXCESSIVELY FROM INPUT SEAL AND PITCH CHANGE SHAFT AT KNURL NUT AREA. REPLACED GEARBOX AND RETURNED AIRCRAFT TO SERVICE.Aug 21, 1997 · N3116P · Bell 206L3SDR HEEA0010625Seal · leakingT/R GR BOX SEAL LEAKING. UNIT WAS RECEIVED 10-19-92 AS AN EVALUATION UNIT.Aug 11, 1997 · N3116P · Bell 206L3SDR 97ZZZX3764Laminated Hinge · tornTAIL ROTOR GEARBOX HAS LAMINATED HINGE TORN,Aug 2, 1997 · N91MH · Snias AS350BASDR HEEA0010544Seal · leakingLEAKING OIL. EVALUATION UNIT BEING RETURNED. SENT TO BELL HELICOPTER TEXTRON TO BE FORWARDED TO BELL-CANADA, ATTENTION: PIERRE ST. GEORGES. (UNIT ON EVALUATION PROGRAM THROUGH BELL HELICOPTER)Jul 31, 1997 · N2761N · Bell 206L1SDR 97ZZZX3929Bearing · wornHIGH FREQUENCY DEVELOPED IN TAIL ROTOR, BEARING SET WORN. REPLACED WITH HEX BEARING SET.Jul 29, 1997 · N31AS · Snias AS350B2SDR 97ZZZX3544Bearing · mismanufacturedNEW REPLACEMENT BEARING RECEIVED WITH INSTRUCTIONS FROM MRC (BEARING MFG), AND HILLER SL UH12-25-1 DESCRIBING INSTALLATION INSTRUCTIONS WITH REGARDS TO THE FILING NOTCHES AND BEARING MARKINGS ON THE OUTER RACE. THESE INSTRUCTIONS ORIENT THE BEARING SO THE MAJJul 19, 1997 · Hiller UH12ESDR HEEA0010385Bearing · separatedBEARING SEPARATION.Jul 7, 1997 · N6095S · Snias AS350B2SDR HEEA0010151Spider · wornT/R SPIDER SLIDER BUSHINGS WORN.Jun 16, 1997 · N60951 · Snias AS350B2SDR HEEA0010150Spider · defectiveT/R SPIDER APPEARS TO RUN HOT.Jun 16, 1997 · N6100R · Snias AS350B2SDR HEEA0010136Bearing · separationT/R GR BOX BEARING SEPARATION.Jun 16, 1997 · N60951 · Snias AS350B2SDR HEEA0010134Bearing · crackedT/R GR BOX BEARINGS CRACKED.Jun 16, 1997 · N6095S · Snias AS350B2SDR CA970722014Trunnion · worn(CAN) PITCH CHANGE TRUNNION WORN BEYOND LIMITS.Jun 15, 1997 · Bell 206BSDR HAIHCMA0129Lamifications · tornREAR ROTOR LAMIFICATIONS ARE TORN BEYOND LIMITS .May 30, 1997 · N992BH · Snias AS350B2SDR 97ZZZX2937Laminated Hinge · wornTAIL ROTOR HUB LAMINATED HINGES WORN BEYOND LIMITS.May 28, 1997 · N92MH · Snias AS350BASDR CA970528012Seal · leaking(CAN) SEAL HAS LEAKED EXCESSIVELY SINCE INSTALLATION IN TAIL ROTOR GEARBOX.May 22, 1997 · Bell 206BSDR HAIHEEA9910Bearing · separationBEARING SEPARATION.May 19, 1997 · N4000L · Snias AS350B2SDR HAIHEEA9908Bearing · separationBEARING SEPARATION.May 19, 1997 · N6095S · Snias AS350B2SDR 97ZZZX2827Laminate Hinge · crackedRUBBER LAMINATE IS CRACKED 180 DEGREES AROUND PART.May 15, 1997 · N911NT · Snias AS350BSDR 97ZZZX2553Hub · bolt seizedDURING REMOVAL OF T/R HUB, HUB RETAINING BOLT WAS VERY HARD TO REMOVE. UPON INSPECTION OF BOLT, FOUND SIGNS THAT BOLT WAS INSTALLED WITH (RED) LOCTITE INSTEAD OF LOCTITE 242 (BLUE). MWC 65.20.00.401 PARA 4 STATES TO APPLY LOCTITE 242 (BLUE) TO THREADS. AFTEMay 12, 1997 · N91GT · Snias AS350BSDR 97ZZZX2552Gearbox · chip lightON FINAL APPROACH, T/R CHIP LIGHT ILLUMINATED. FOUND EXCESSIVE CHIPS IN OIL. REMOVED GEARBOX FROM SERVICE.May 10, 1997 · N91GT · Snias AS350BSDR 97ZZZX4135Spider Assy · wornEXCESSIVE MAIN SPIDER BEARING PLAY. UNIT INSTALLED, BUT WAS NOT RUN. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.May 3, 1997 · N93LG · Snias AS350B2SDR HAIHEEA9758Gearbox · making metalINTERMEDIATE GR BOX MAKING METAL.Apr 30, 1997 · N81832 · Bolkms BO105SSDR HAIHEEA9738Center Case · wornCENTER CASE TAIL ROTOR BORE WORN. CHECK INDICATION ON LOWER MOUNTING FLANGE AS MARKED.Apr 30, 1997 · N3520T · Bolkms BO105SSDR HAIHEEA9707Case Assy · corrodedPOSSIBLE REPAIR DUE TO CORROSION AT MOUNTING LUGS.Apr 30, 1997 · N22608 · Bell 412SDR HAIHCMA0120Lamifications · tornREAR ROTOR LAMIFICATIONS ARE TORN BEYOND LIMITS .Apr 28, 1997 · N992BH · Snias AS350B2SDR 97ZZZX4133Hinge · wornLAMINATED HINGE ELASTOMERS WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS FROM KIT 350A33-2153-00, CORRECTED PROBLEM.Apr 26, 1997 · N911LR · Snias AS350B2SDR HAIHEEA9602Case Assy · defectiveGR BOX DEFECT. UNABLE TO OBTAIN ACCEPTABLE BACKLASH. READING BELOW LIMITS.Apr 25, 1997 · N22347 · Bell 412SDR CA970505005Hinge · cracked(CAN) BLISTERS, CRACKS AND DELAMINATIONS IN BEARING RUBBER MOUNTS CAUSING AN INCREASE IN HIGH FREQUENCY VIBRATION.Apr 25, 1997 · Snias AS350B2
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