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.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
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.SDR 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 UNDERSDR ERAA062370Stand · mismarkedTRANSMISSION STAND TAGGED AS LEFT HAND AND IS ACTUALLY RIGHT HAND. FORWARD ARROW ALSO IS BACKWARDS.SDR ERAA062369Bevel Gear Set · making metalTRANSMISSION MAKING METAL. GEAR SET BREAKING DOWN.SDR CA990420011Line · chafed(CAN) DURING 200-HOUR INSPECTION, TRANSMISSION OIL LINE P/N 70-061J000T310A WAS FOUND CHAFED THROUGH STAINLESS STEEL SLEEVE.SDR 99ZZZX3299Gear · corrodedCORROSION PITTING ON BEARING RACE. REJECTED. REF: RMA NR R019740. MCN NR 7. REMOVED AND REPLACED.SDR 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 TRANSMISSIONSDR HEEA061618Transmission · contaminatedMETAL IN OIL.SDR HEEA061617Transmission · leakingMAST SEAL LEAKING ON TRANSMISSION.SDR HEED064523Fastener · missingON DAILY INSPECTION, FOUND (1 EACH) HI-LOCK PIN AND COLLAR MISSING FROM TRANSMISSION SUPPORT BEAM. REPLACED HI-LOCK PIN AND COLLAR.SDR HEEA061586Indicator · inoperativeINDICATOR'S PRESSURE NEEDLE INOPERATIVE.SDR HEEA061579Pump · mismanufacturedALIGNMENT HOLE IN WRONG LOCATION FOR DRAIN ORIENTATION. IN DIFFERENT LOCATION THAN OTHER PUMPS.SDR 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 SDR 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 SDR 99ZZZX3253Cover · crackedROTOR BRAKE COVER CRACKED. REPLACED COVER.SDR 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.SDR 99ZZZX1421Transmission · making metalMETAL CONTAMINATION OF OIL SYSTEM.SDR HEEA061167Transmission · making metalTRANSMISSION ASSY MAKING METAL.SDR HEEA061158Switch · inoperativePRESSURE SWITCH INTERMITTENT AND INOPERATIVE.SDR HEEA061154Pump · leakingTRANSMISSION OIL PUMP LEAKING FROM SEAL DRAIN.SDR HEEA060962Transmission · making metalTRANSMISSION ASSEMBLY MAKING METAL.SDR 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.SDR 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.SDR 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 SDR 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.SDR HEEA060861Indicator · failedNO TEMPERATURE INDICATION.SDR HEEA060860Indicator · reads highPRESSURE READS HIGH, MARKINGS FADED.SDR HEEA060859Indicator · leaksINDICATOR LEAKS AT CASE.SDR HEEA060845Indicator · damagedBEZEL SEPARATING FROM INDICATOR.SDR HEEA060844Indicator · leaksINDICATOR HAS INTERNAL LEAK.SDR HEEA060746Valve · strippedAFT RELIEF VALVE THREADS STRIPPED.SDR HEEA060745Transmission · overtorquedOVERTORQUE TO 110 PERCENT MOMENTARY LESS THAN 2 SECONDS. 5 SECONDS OPERATION, BRASS FOUND IN INTERNAL FILTER AND EXTERNAL FILTER.SDR 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.SDR HEEA060629Indicator · malfunctionedNEEDLE ON PRESSURE SIDE PEGGED OUT AND DID NOT RETURN TO NORMAL. REPAIRED AND RETURNED TO SERVICE.SDR AU990151Transmission · making metal(AUS) MAIN ROTOR GEARBOX METAL CONTAMINATION. PART TC: 1,704.SDR 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.SDR 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 LSDR ERAA060601Spur Gear · mismanufacturedNEW GEAR THAT HAS TWO TEETH WITH MANUFACTURING DEFECT.SDR 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.SDR HEEA060359Case Assy · crackedCRACK INDICATION. REPLACED WITH SERVICEABLE CASE.SDR HEEA060358Case Assy · corrodedWORN I/P LINER AND CORROSION IN STUD HOLE OF MATING SURFACE (UPPER). ALSO CORROSION AT I/P MATING SURFACE.SDR 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.SDR HEEA060460Transmission · making metalTRANSMISSION HAS METAL IN OIL.SDR HEEA060459Transmission · making metalTRANSMISSION HAS METAL IN OIL.SDR HEEA060224Pump · crackedPUMP HAS CRACK INDICATION ON HOUSING AND WORN SPLINE ON SHAFT.SDR HEEA060223Pump · corrodedSTUDS CORRODED ON PUMP ASSEMBLY.SDR HEEA060222Bearing Seat · wornBEARING SEAT WORN BEYOND LIMITS. REPLACED WITH SERVICEABLE CARRIER ASSY.SDR 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 SPURSDR 99ZZZX3874Switch · inoperatiaveSWITCH INOPERATIVE. FAILS TO ILLUMINATE PRESSURE LIGHT. LIGHT FLICKERS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 99ZZZX3301Chip Detector · failedPART FAILED NEW 'OUT OF BOX'.
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