JASC 6320

Service difficulty reports · 1,930

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 99ZZZX2163Retainer · brokenTHE NYLON RETAINER FOR THE PLANATARY GEAR BEARING WAS FOUND IN THE TRANSMISSION OIL SCREEN IN SMALL PIECES. SUBMITTER STATED THIS IS THE FOURTH TRANSMISSION IN THE LAST 6 MONTHS WITH THIS PROBLEM.Apr 23, 1999 · N5000G · Bell 206L1SDR 99ZZZX1925Cap · crackedONE MOUNTING EAR FOR ENGINE OIL FILTER HOUSING CAP BROKE ALLOWING ENGINE OIL PRESSURE TO PUSH CAP UP PASS O-RING. THE ENGINE OIL FILTER HOUSING IS MOUNTED ON TOP OF ENGINE. LEAKING OIL RAN BACK ON TO TURBINE SECTION CATCHING ON FIRE. HELICOPTER LANDED UNDERApr 23, 1999 · N600RP · Bell 206BSDR ERAA062370Stand · mismarkedTRANSMISSION STAND TAGGED AS LEFT HAND AND IS ACTUALLY RIGHT HAND. FORWARD ARROW ALSO IS BACKWARDS.Apr 20, 1999SDR ERAA062369Bevel Gear Set · making metalTRANSMISSION MAKING METAL. GEAR SET BREAKING DOWN.Apr 20, 1999 · N133EH · Bolkms BO105SSDR CA990420011Line · chafed(CAN) DURING 200-HOUR INSPECTION, TRANSMISSION OIL LINE P/N 70-061J000T310A WAS FOUND CHAFED THROUGH STAINLESS STEEL SLEEVE.Apr 13, 1999 · Bell 206LSDR 99ZZZX3299Gear · corrodedCORROSION PITTING ON BEARING RACE. REJECTED. REF: RMA NR R019740. MCN NR 7. REMOVED AND REPLACED.Apr 13, 1999SDR HEEA061718Transmission · making metalDURING 600-HOUR TRANSMISSION OIL CHANGE, DISASSEMBLED FILTER ELEMENT AND NOTED EXCESSIVE AMOUNTS OF FINE METALLIC PARTICLES IN THE FIRST STAGE OF THE ELEMENT PAPER. NO PARTICLES WERE NOTED IN THE FILTER BOWL. REPLACED FILTER ELEMENT AND SERVICED TRANSMISSIONApr 6, 1999 · Bell 206L1SDR HEEA061618Transmission · contaminatedMETAL IN OIL.Apr 6, 1999 · N1546G · Skrsky S76ASDR HEEA061617Transmission · leakingMAST SEAL LEAKING ON TRANSMISSION.Apr 6, 1999 · N1546K · Skrsky S76ASDR HEED064523Fastener · missingON DAILY INSPECTION, FOUND (1 EACH) HI-LOCK PIN AND COLLAR MISSING FROM TRANSMISSION SUPPORT BEAM. REPLACED HI-LOCK PIN AND COLLAR.Apr 5, 1999 · N478X · Skrsky S76CSDR HEEA061586Indicator · inoperativeINDICATOR'S PRESSURE NEEDLE INOPERATIVE.Apr 2, 1999 · N2758N · Bell 206L1SDR HEEA061579Pump · mismanufacturedALIGNMENT HOLE IN WRONG LOCATION FOR DRAIN ORIENTATION. IN DIFFERENT LOCATION THAN OTHER PUMPS.Apr 2, 1999 · N49EA · Bell 206L3SDR GJQA061540Bearing · galledPILOT REPORTED MAIN ROTOR TRANSMISSION CHIP LIGHT. CLEANED AND INSPECTED. TRANSMISSION OIL MONITOR PLUG. FOUND SMALL AMOUNT OF MAGNETIC CHIPS. RE-INSTALLED CHIP DETECTOR AND WILL MONITOR. AT 100 HOUR INSPECTION, AT AIRFRAME HOURS 1,058.3, EVIDENCE OF MINOR Apr 2, 1999 · N98W · Bell UH1HSDR 99ZZZX1830Quill Assy · contaminatedNOTED WHEN OVERHAULING TAIL ROTOR DRIVE QUILL, MANUFACTURING MACHINING FERROUS SHAVINGS EVIDENT IN THE SPACE OR GAP BETWEEN WHERE THE BEARING LINER IS PRESSED INTO SLEEVE OF QUILL. TOOK RIGHT ANGLE SCRIBE TOOL AND REMOVED FERROUS SHAVINGS FROM THE GAP BETWEEN Mar 29, 1999 · N98W · Bell 212SDR 99ZZZX3253Cover · crackedROTOR BRAKE COVER CRACKED. REPLACED COVER.Mar 28, 1999 · N430CH · Bell 430SDR HEEA061336Case Assy · misoverhauledCASE ASSEMBLY RECEIVED WITH CONCEALED DAMAGE. GOUGES ON RIGHT HAND SIDE OF TOP CASE, APPROX. 10 EACH, DEPTH RANGE FROM 0.008 INCH TO 0.012 INCH.Mar 25, 1999 · Bell 212SDR 99ZZZX1421Transmission · making metalMETAL CONTAMINATION OF OIL SYSTEM.Mar 23, 1999 · N914ET · Urocop EC135P1SDR HEEA061167Transmission · making metalTRANSMISSION ASSY MAKING METAL.Mar 19, 1999 · N447PH · Bell 407SDR HEEA061158Switch · inoperativePRESSURE SWITCH INTERMITTENT AND INOPERATIVE.Mar 16, 1999 · N406PH · Bell 407SDR HEEA061154Pump · leakingTRANSMISSION OIL PUMP LEAKING FROM SEAL DRAIN.Mar 16, 1999 · N427PH · Bell 407SDR HEEA060962Transmission · making metalTRANSMISSION ASSEMBLY MAKING METAL.Mar 4, 1999 · N407MM · Bell 407SDR 99ZZZX1434Transmission · making metalPILOT REPORTED TRANSMISSION CHIP LIGHT. FOUND NO DEBRIS. RETURNED AIRCRAFT TO SERVICE. PILOT REPORTED TRANSMISSION CHIP LIGHT AGAIN. FOUND ONE SLIVER ON CHIP DETECTOR. AIRCRAFT TAKEN OUT OF SERVICE TO EVALUATE TRANSMISSION FOR BEARING FAILURES.Feb 25, 1999 · N90752 · Bolkms BO105CSDR 99ZZZX1250Retainer · brokenUPON DISASSEMBLYING TRANSMISSION FOR INSPECTION REMOVING SCREEN ASSY FOR CHIPS OF RETAINER ASSY IN SCREEN, LOOKED OVER PLANETARY, FOUND 1 EACH GEAR ASSY RETAINER MISSING PIECES. UPGRADE USING NEW HOUSING ASSY, P/N 214-040-515-001.Feb 25, 1999 · N577E · Bell 206L1SDR 99ZZZX1247Retainer · brokenUPON TEAR-DOWN OF TRANSMISSION FOR INSPECTION, FOUND SCREEN ASSY FULL ON PLASTIC OR NYLON PIECES. INSPECTED PLANETARY ASSY FOUND 3 EACH GEAR ASSYS WITH NO RETAINERS REMAINING, ONE EACH RETAINER WAS IN PLACE. ONCE REMOVED, IT FELL APART. UPGRADE RETAINERS TO Feb 25, 1999 · N2611 · Bell 206L1SDR HEEA060956Gearbox · corrodedEXCESSIVE CORROSION AND WEAR BENEATH P/N 214-040-160-105 TRIPOD ENGINE MOUNT AND P/N 214-040-151-103 BIPOD ENGINE MOUNT (BEYOND ALLOWABLE LIMITS) CASE ASSY P/N 214-040-991-109, S/N A518, T.T. UNK T.S.O. 283:00 HOURS.Feb 24, 1999 · N8045T · Bell 214STSDR HEEA060861Indicator · failedNO TEMPERATURE INDICATION.Feb 23, 1999 · N5012V · Bell 206L1SDR HEEA060860Indicator · reads highPRESSURE READS HIGH, MARKINGS FADED.Feb 23, 1999 · N8593X · Bell 206L3SDR HEEA060859Indicator · leaksINDICATOR LEAKS AT CASE.Feb 23, 1999 · N3116L · Bell 206L3SDR HEEA060845Indicator · damagedBEZEL SEPARATING FROM INDICATOR.Feb 23, 1999 · N5014V · Bell 206L1SDR HEEA060844Indicator · leaksINDICATOR HAS INTERNAL LEAK.Feb 23, 1999 · N1076Y · Bell 206L1SDR HEEA060746Valve · strippedAFT RELIEF VALVE THREADS STRIPPED.Feb 22, 1999 · N2298Z · Bell 412SDR HEEA060745Transmission · overtorquedOVERTORQUE TO 110 PERCENT MOMENTARY LESS THAN 2 SECONDS. 5 SECONDS OPERATION, BRASS FOUND IN INTERNAL FILTER AND EXTERNAL FILTER.Feb 22, 1999 · Bell 412SDR HEEA060643Quill Assy · wornONE EACH DISK, P/N 9440791-1, WORN BEYOND LIMITS AND ONE EACH FLANGE, P/N 209-040-177-101, WORN BEYOND LIMITS. SCRAPPED DISK AND FLANGE AND REPLACED WITH SERVICEABLE PARTS.Feb 16, 1999 · N2149S · Bell 412SDR HEEA060629Indicator · malfunctionedNEEDLE ON PRESSURE SIDE PEGGED OUT AND DID NOT RETURN TO NORMAL. REPAIRED AND RETURNED TO SERVICE.Feb 16, 1999 · N7128R · Bell 412SDR AU990151Transmission · making metal(AUS) MAIN ROTOR GEARBOX METAL CONTAMINATION. PART TC: 1,704.Feb 14, 1999 · Snias AS332LSDR CA990303001Bearing · tight(CAN) DURING REPAIR ON MAIN ROTOR TRANSMISSION, IT WAS NOTICED THAT THE ROLLER BEARING 309025146 INNER RACE HAD MOVED BACK FROM ITS ORIGINAL PRESSED ON POSITION. IT WAS FOUND TO BE TIGHT AGAINST THE T/R OUTPUT PINION RETAINING RING.Feb 10, 1999 · Hughes 369DSDR CA990224001Ring Gear · broken(CAN) M/R TRANSMISSION NOISE. CHIP DETECTOR LIGHT WAS NOTICED AND SUBSEQUENT INSPECTION OF CHIP DETECTOR PLUG REVEALED SEVERAL METAL FLAKES. TRANSMISSION WAS REMOVED, DISASSEMBLED AND OUTPUT RING GEAR TOOTH WAS FOUND TO BE COMPLETELY BROKEN OFF. TOOTH AND LFeb 10, 1999 · Hughes 369DSDR ERAA060601Spur Gear · mismanufacturedNEW GEAR THAT HAS TWO TEETH WITH MANUFACTURING DEFECT.Feb 4, 1999SDR 99ZZZX856Gearbox · making metal2.5 HOURS AFTER OIL CHANGE, M/R GEARBOX HAD CHIP LIGHT. LARGE FLAKES, BLACK OIL, SMELLED BURNT. OIL LEVEL CORRECT. OIL SAMPLE TAKEN.Jan 28, 1999 · N52PD · Enstrm F28FSDR HEEA060359Case Assy · crackedCRACK INDICATION. REPLACED WITH SERVICEABLE CASE.Jan 27, 1999 · N7077F · Bell 206L4SDR HEEA060358Case Assy · corrodedWORN I/P LINER AND CORROSION IN STUD HOLE OF MATING SURFACE (UPPER). ALSO CORROSION AT I/P MATING SURFACE.Jan 27, 1999 · N50034 · Bell 206L1SDR ERAA060591Quill Assy · wornTHE FOUR BOLTS HOLDING THE BEARING RETENTION PLATE IN PLACE LOST TORQUE AND BECAME VERY LOOSE WITH ONLY THE SAFETY WIRE HOLDING THEM IN PLACE. THIS ALLOWED THE BEARING TO SPIN CAUSING DAMAGE TO THE INSIDE OF THE SLEEVE ASSY.Jan 27, 1999 · N169EH · Bell 412SDR HEEA060460Transmission · making metalTRANSMISSION HAS METAL IN OIL.Jan 25, 1999 · N818SH · Bolkms BO105SSDR HEEA060459Transmission · making metalTRANSMISSION HAS METAL IN OIL.Jan 25, 1999 · N81982 · Bolkms BO105SSDR HEEA060224Pump · crackedPUMP HAS CRACK INDICATION ON HOUSING AND WORN SPLINE ON SHAFT.Jan 22, 1999 · N6610E · Bell 206L3SDR HEEA060223Pump · corrodedSTUDS CORRODED ON PUMP ASSEMBLY.Jan 22, 1999 · N104PH · Bell 206B3SDR HEEA060222Bearing Seat · wornBEARING SEAT WORN BEYOND LIMITS. REPLACED WITH SERVICEABLE CARRIER ASSY.Jan 22, 1999 · N206FS · Bell 206L3SDR 99ZZZX694Web · looseTHE AIRCRAFT EXPERIENCED A MAIN GEARBOX CHIP LIGHT IN-FLIGHT. INITIAL INVESTIGATION BY MAINTENANCE REVEALED THE CHIP DETECTOR HAD PICKED UP A SHEARED BOLT/NUT COMBINATION. FURTHER EXAMINATION OF THE GEARBOX WITH A BORESCOPE REVEALED THE UPPER WEB ON THE SPURJan 21, 1999 · N1546G · Skrsky S76ASDR 99ZZZX3874Switch · inoperatiaveSWITCH INOPERATIVE. FAILS TO ILLUMINATE PRESSURE LIGHT. LIGHT FLICKERS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 19, 1999 · N202LF · Bolkms BO105LSA3SDR 99ZZZX3301Chip Detector · failedPART FAILED NEW 'OUT OF BOX'.Jan 14, 1999
Back to JASC 6320