JASC 6320

Service difficulty reports · 1,931

Reports filed under 6320 · Main 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 = '6320'
  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 HEEA0014251Pump Bearing · wornTRANSMISSION OIL PUMP BEARING WORN.May 22, 1998 · N427PH · Bell 407SDR HEEA0014209Isolation Mt · wornISOLATION MOUNT HAS WORN BEARING.May 14, 1998 · N230UN · Bell 230SDR AU980523Bearing · deteriorated(AUS) MAIN TRANSMISSION BEARING DETERIORATED. CHIP DETECTOR CONTAINED SIX PIECES OF FLAKED MAGNETIC MATERIAL. THE TRANSMISSION WAS CHANGED.May 13, 1998 · Bell 412SDR HEEA0014183Flingers · groovedHYD PUMP SEAL FLINGER IS GROOVED. REPLACED WITH A SERVICEABLE PART.May 12, 1998 · N5128 · Skrsky S76ASDR HEEA0014182Bearing · spalledBEARING SPALLING. REPLACED WITH A SERVICEABLE PART.May 12, 1998 · N5128 · Skrsky S76ASDR HEEA0014181Adapter Shaft · wornADAPTER SHAFT WORN SEAT. REPLACED WITH A SERVICEABLE PART.May 12, 1998 · N5128 · Skrsky S76ASDR CA980908018Bearing · damaged(CAN) RIGHT INPUT BEARING PEELING.May 12, 1998 · Bolkms BO105CSDR HEEA0014143Seal · leakingOIL SEAL LEAK.May 11, 1998 · N427PH · Bell 407SDR CA980521006Support · cracked(CAN) CRACK FOUND ON ONE OF THE EARS WHICH MOUNTS THE LIFT LINK ASSY. CRACKED FROM BOLT HOLE TO EDGE.May 9, 1998 · Bell 205A1SDR HEEA0014135Seal Assy · leaksSEAL LEAKS.May 7, 1998 · N437PH · Bell 407SDR HEEA0014096Transmitter · failedGAUGE READS ZERO OIL PRESSURE.Apr 30, 1998 · N406PH · Bell 407SDR HEEA0014074Indicator · fluctuatesOIL PRESS NEEDLE FLUCTUATES.Apr 29, 1998 · N2770Y · Bell 206L1SDR 98ZZZX1706Spur Gear · fracturedINVESTIGATION INTO A SERIES OF CHIP DETECTOR LIGHTS ON THE MAIN GEARBOX REVEALED THE SPUR GEAR HAD FRACTURED IN THREE PLACES. THE WEB OF THE GEAR HAD TWO SEPARATE FRACTURES AND THE SHAFT OF THE GEAR HAD ONE FRACTURE. TWO OF THE PINS (P/N HL12VLJ-8-5/6) THAT Apr 27, 1998 · N1546G · Skrsky S76ASDR AU980499Switch · faulty(AUS) MAIN ROTOR GEARBOX TEMPERATURE SWITCH FAULTY.Apr 26, 1998 · Robsin R44SDR AU980437Gear · pitted(AUS) DURING A SCHEDULED INSPECTION, METAL WAS FOUND ON THE M/R TRANSMISSION'S CHIP DETECTORS. ON TEAR DOWN INSPECTION, THE TRANSMISSION'S INPUT GEAR SHAFT WHICH FORMS THE INNER BEARING SURFACE FOR BEARING PN 206-040-031-107 RACE WAS FOUND TO HAVE SEVERE BRINApr 23, 1998 · Bell 206B3SDR AU980498Bolt · separated(AUS) BOLT HEAD SEPARATED FROM THE SHANK. DOWEL PIN SHEARED.Apr 4, 1998 · Robsin R44SDR 98ZZZX1888Switch · failedGEARBOX OIL PRESSURE MALFUNCTION IS COMMON DUE TO PRESSURE SWITCH. SUBMITTER STATED THE SYSTEM NEEDS A PRESSURE GAUGE TO VERIFY LIKE THE ENGINE OIL SYSTEM.Apr 3, 1998 · N911SV · Bolkms BO105LSA3SDR HEEA0013817Oil Cooler · leakingOIL COOLER LEAKING.Apr 2, 1998 · N2261D · Bell 412SDR HEEA0013813Pump · leakingSEAL LEAKING-SHAFT WORN.Apr 2, 1998 · N4282Z · Bell 206L3SDR HEEA0013798Pump · wornSHAFT BUSHING WORN.Apr 2, 1998 · N1078D · Bell 206L1SDR HEEA0013797Pump · failedSHAFT BUSHING WORN.Apr 2, 1998 · N5000K · Bell 206L1SDR HEEA0013760Lower Housing · wornM/R GR BOX LOWER HOUSING SEAT WORN, LOOSE INSIDE LINERS.Apr 2, 1998 · N5029H · Bolkms BO105SSDR 99ZZZX208Gearbox · making metalUPON INSPECTION OF GEARBOX PARTS DURING DISASSEMBLY, FOUND CUT O-RING UNDER SCREEN NR 6840136 IN OIL DELIVERY TUBE OIL PASSAGE. THIS COULD HAVE CAUSED RESTRICTED OIL FLOW TO OIL DELIVERY TAKE WHICH LUBES 2-1/2 BEARING AREA. SUBMITTER STATED LACK OF OIL IN 2Mar 31, 1998 · N712AL · Skrsky S76ASDR AU980356Chip Detector · faulty(AUS) MAIN GEARBOX LT CHIP DETECTOR FAULTY.Mar 30, 1998 · Skrsky S76CSDR HEEA0013598Oil Pump · failedOIL PUMP OUTER LINER BREAKING DOWN.Mar 26, 1998 · N967MB · Bolkms BO105SSDR HEEA0013559Upper Housing · defectiveUPPER BORE WORN LINER LOOSE.Mar 26, 1998 · N967MB · Bolkms BO105SSDR HEEA0013549Center Case · wornTR QUILL WORN. OIL NOZZLE SEAT WORN. ACCY FAN DRIVE QUILLS WORN AND PIN SEAT WORN.Mar 26, 1998 · N967MB · Bolkms BO105SSDR HEEA0013548Lower Housing · corrodedM/R GR BOX LINERS LOOSE. INTERNAL SHAFT SEAT WORN. CORROSION ON LOWER FLANGE.Mar 26, 1998 · N967MB · Bolkms BO105SSDR 98ZZZX1750Transducer · failedTRANSDUCER FAILED. NEVER USED. REMOVED AND REPLACED.Mar 23, 1998 · N117NC · Bolkms BK117C1SDR HEEA0013410Indicator · failedNO PRESSURE INDICATION POWER. XMSN OIL TEMP/PRESSMar 18, 1998 · N467PH · Bell 407SDR HEEA0013358Pressure Switch · failedTRANS. PRESS CAUTION LIGHT WILL NOT ILLUMINATE.Mar 17, 1998 · N510PH · Bell 407SDR 98ZZZX1353Bypass Indicator · failedMGB FILTER BYPASS INDICATOR UNIT INOPERATIVE. EVEN WITH FRESH FILTERS INSTALLED, UNIT 'POPS'. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 13, 1998 · N901CF · Doug MD900SDR HEEA0013279Center Case · wornCENTER CASE WORN. TAIL ROTOR BORE 91.90MM.Mar 4, 1998 · N3071K · Bolkms BO105SSDR HEEA0013197Ring Gear · corrodedWORN PILOT DIA'S AND CORROSION ON UPPER AND LOWER FLANGES.Mar 4, 1998 · N108X · Bell 412SDR HEEA0013179Indicator · failedTRIPLE OIL PRESSURE INDICATOR FAILED. TRANSMISSION PRESSURE DROPPING TO ZERO.Mar 4, 1998 · N81832 · Bolkms BO105SSDR CA980311004Sensor · cracked(CAN) DURING 1200 HOUR INSPECTION AN OIL MONITOR WAS FOUND CRACKED 360 DEG. OF RADIUS BETWEEN BOLT HEAD AND SHAFT.Mar 3, 1998 · Bell 206BSDR HEEA0013171Cylinder Roller · failed3000 HOUR OVERHAUL DUE. ROLLER BEARING P/N 4638-302-025 RECOMMENDED. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013170Bearing · failed3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013169Roller Bearing · corroded3000 HOUR OVERHAUL DUE. BEARING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013168Ball Bearing · corroded3000 HOUR OVERHAUL DUE. BEARING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013167Ball Bearing · corroded3000 HOUR OVERHAUL DUE. BEARING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013166Ball Bearing · corroded3000 HOUR OVERHAUL DUE. BALL BEARING CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013165Cylinder Roller · corroded3000 HOUR OVERHAUL DUE. CORROSION ON ROLLERS. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013164Roller Bearing · failed3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013163Roller Bearing · failed3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013162Roller Bearing · failed3000 HOUR OVERHAUL DUE. BEARING ROLLOVER AND CORROSION. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013161Ball Bearing · failed3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013160Roller Bearing · failed3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013159Roller Bearing · failed3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105SSDR HEEA0013158Bearing · failed3000 HOUR OVERHAUL DUE. BEARING ROLLOVER. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.Mar 3, 1998 · N967MB · Bolkms BO105S
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