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 HEEA088463Clip · brokenMETAL IN OIL . BROKEN CLIP ON MAIN CASE CHIP PLUG. REPAIRED. REPLACED 2 EACH CLIPS.SDR CA001130003Transmission · making metal(CAN) APPROXIMATELY 1.3 HR INTO FLT MAIN TRANSMISSION WARNING LIGHT ILLUMINATED. A/C WAS APPROXIMATELY. 3 MINS AWAY FROM AN ON ROUTE AIRPORT; THE PILOT ELECTED TO LAND AT AIRPORT & HAVE MAINTENANCE ENGINEER INVESTIGATE PROBLEM. AME PULLED MAGNETIC CHIP DETECTOSDR 20001108SH027Gear · spalledMAIN ROTOR CHIP DETECTORS PICKING UP MAJOR METAL. OPENED GEARBOX AND INSPECTED. FOUND SPALLING OF ALL GEARS. SUBMITTER SUGGESTED OIL NOT LUBRICATING UNDER LOADS. USING MOBIL SHC 626 PER MDHC NOTICE NL.001.1. (X)SDR R7MA714132490Transmitter · inoperativePRESSURE TRANSMITTER INOPERATIVE. TRANSMISSION GAUGE INDICATES (0). REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR R7MA723132520Transmitter · inoperativePRESSURE TRANSMITTER INOPERATIVE UPON INSTALLATION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR CA001012013Fitting · cracked(CAN) UPON PURCHASE OF THIS AIRCRAFT AND DISASSEMBLED FOR REFURBISHING. THE RT MAIN TRANSMISSION SUPPORT FITTING WAS FOUND TO BE CRACKED. DURING INSPECTION.SDR CA001012003Gearbox · failed(CAN) TAKEOFF WAS ABORTED WHEN A LOUD BANG WAS HEARD BY FLIGHT CREW. NR 2 ENGINE SHUT DOWN & A/C LANDED BACK ON THE HELI PAD. ON TOUCH DOWN THE TAIL WHEEL MISSED THE PAD & THE AIRCRAFT CAME TO REST ON THE KEEL JUST FORWARD OF THE TAIL WHEEL. ALL PAX WERE UNLOASDR AU000840Hose · failed(AUS) TRANSMISSION OIL HOSE FAILED. (X)SDR CA000928004Line · chafed(CAN) PILOT LANDED & SHUT DOWN NORMALLY. HE THEN NOTICED FLUID RUNNING DOWN SIDE OF FUSELAGE. INVESTIGATION REVEALED THAT LEAKING OIL WAS COMING FROM THE MGB OIL PRESSURE INDICATING LINE, LOCATED UNDER THE TRANSMISSION RESTRAINT. THE CHAFING OF THE FOIL FLEX LSDR AU000633Transmission · contaminated(AUS) MAIN TRANSMISSION MAKING METAL. CHIP LIGHT DID NOT ILLUMINATE. (X)SDR 20001215SH008Seal · leakingSEALING RING LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)SDR AU000750Transmission · faulty(AUS) MAIN TRANSMISSION CHIP DETECTOR CONTAMINATED WITH METAL. FOLLOWING INSPECTION AND GROUND RUN, THE CHIP DETECTOR AGAIN ILLUMINATED. (X)SDR CA000925012Gearbox · cracked(CAN) OIL LEAK WAS DETECTED ON RIGHT HAND FORWARD SIDE OF MAIN GEARBOX. AFTER FURTHER INVESTIGATION, FOUND THERE WAS A CRACK IN THE LOWER HOUSING ASSY. THE CRACK WAS 2.75 INCHES LONG AND LOCATED APPROXIMATELY 4 INCHES ABOVE AND FORWARD OF THE FORE AND AFT SESDR CA001205010Transmission · failed(CAN) DURING THE SERVICEABILITY CHECK (AFTER THE METAL WAS FOUND ON THE CHIP PLUG) MORE METAL WAS FOUND ON THE CHIP PLUGS AND THE OIL MONITOR. MAST AND THE TRANSMISSION WERE REPLACED.SDR 20001018SH029Gear · failed1ST STAGE PLANETARY PINION GEAR, PN 6435-20411-102, SN 1524, UNKNOWN TT, FAILED IN MAIN GEARBOX, PN 6435-20500-049, SN A6-165, LEAVING LARGE FRAGMENT OF FERROUS METAL IN SUMP, SUMP SCREEN. TEARDOWN INSP REVEALED ENTIRE TOOTH FRACTURED AT JUNCTION OF CASE TO CSDR AU000824Bearing · misinstalled(AUS) MAIN ROTOR DRIVE SHAFT THRUST BEARING WAS INCORRECTLY INSTALLED. DISCRPENCY WAS FOUND DURING INSPECTION IAW AD HU269/28 AMDT3. (X)SDR 20000912SH013Sun Gear · making metalTRANSMISSION ASSEMBLY MAKING METAL. SUN GEAR UPPER TEETH PITTED (BREAKING DOWN). SUN GEAR SCRAPPED. (X)SDR 20001026SH028Transmitter · erraticPRESSURE TRANSMITTER HAD ERRATIC READINGS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X)SDR CA000901017Gearbox · making metal(CAN) DURING LOGGING OPERATION, PILOT REPORTED GEARBOX CHIP WARNING INDICATION AND LANDED IN SERVICE LANDING. INSPECTION OF CHIP DEECTORS REVEALED METALLIC FUZZ. DETECTORS CLEANED, AIRCRAFT GROUND RUN AND TEST FLOWN IN ACCORDANCE WITH BP252 MAINTENANCE MANUASDR 20000829SH016Gearbox · making metalWHILE PILOT WAS FLYING ON TOUR FLIGHT, NOTICED MAIN GEARBOX CHIP LIGHT ILLUMINATED. PILOT MADE PRECAUTIONARY LANDING. INSPECTED MAIN GEARBOX CHIP PLUG, FOUND A SMALL METAL FLAKE. CLEANED CHIP PLUG AND PERFORMED OPERATIONAL CHECK, FUNCTIONALLY CHECKED GOOD. SDR 20001025SH017Pinion Gear · failedDISASSEMBLED GEARBOX DUE TO METAL IN OIL. CLEANED AND INSPECTED, FOUND EXCESSIVE GALLING ON PINION GEAR AND T/M GEAR TEETH. PINION GEAR HAD EXCESSIVE GALLING ON GEAR TEETH DUE TO IMPROPER MESHING OF T/R AND PINION GEAR. SECONDARY DAMAGE: T/M GEAR P/N 68936SDR CA000801011Case · cracked(CAN) WHILE CARRYING OUT A DAILY INSPECTION, THE AME NOTICED A CRACK ON THE TRANSMISSION SUPPORT CASE WHERE THE LIFT LINK ATTACHES.SDR 20001012SH019Structure · crackedDURING TEARDOWN, MGB, PN 6435-20400-063, SN 16-084, FOR O/H, 5 CRACKS VISUALLY NOTICED IN 5 OF 9 LIGHTENING HOLES IN LOWER PLATE OF 2ND STAGE PLANETARY PLATE ASSY, P/N 6435-20231-014, SN EAC 3691. FLUORESCENT MAGNETIC PARTICLE INSPECT(FMPI) REVEALED 8 CRACKS.SDR CA000801007Line · leaking(CAN) UPON LANDING THE ENGINEER NOTICED OIL ON THE BELLY OF THE AIRCRAFT. UPON INVESTIGATION HE FOUND A PIN HOLE IN THE OIL LINE.SDR CA000719013Case · cracked(CAN) OIL WAS NOTED LEAKING FROM TRANSMISSION DURING GROUND RUN. REMOVAL OF THE PAINT REVEALED A CRACK ON THE UPPER CASE STARTING FROM THE SPLIT LINE BETWEEN TWO MOUNTING STUDS AT THE 4:30 POSITION, VIEWED FROM THE TOP. AIRCRAFT WAS GROUNDED, TRANSMISSION RSDR 20000718SH015Transmission · corrodedAT DISASSEMBLY FOR TRANSMISSIONS FIRST OVERHAUL, FOUND CORROSION IN BORE OF MOUNTING SPLINDLE. CORROSION IN BORE OF CHIP DETECTOR ASSY. CORROSION ON INPUT FLANGE. (X)SDR 20000911SH003Shaft · wornDURING OVERHAUL INSPECTION, DISCOVERED BEARING OUTBRACE HAD ROTATED IN HOUSING. EXCESSIVE WEAR IN HOUSING INSIDE DIAMETER. WILL C/W BELL TECH BULLETIN 206-95-155 THAT INSTALLS SLOTTED OUTER SHAFT WITH KEYED BEARING WHICH IS TO CORRECT THE BEARING ROTATION PRSDR GJQR20000601Shaft · wornDURING OVERHAUL INSPECTION OF FREE WHEELING UNIT, IT WAS DISCOVERED THAT THE BEARING OUTER RACE HAD ROTATED IN THE HOUSING. ALSO THERE WAS EXCESSIVE WEAR IN THE HOUSING INTERNAL DIMENSION. WILL UPGRADE WITH BELL TECHNICAL BULLETIN 206-95-155 WITH SLOTTED OUTESDR 20000712SH015Case · crackedMAIN TRANSMISSION HAS CRACK ON THE UPPER CASE IN THE AREA OF THE RIGHT REAR MOUNT LEG. (X)SDR 20000711SH001Transmission · making metalMAIN ROTOR CHIP LIGHT CAME ON IN-FLIGHT AND WOULD NOT PULSE OFF. AFTER REMOVAL OF MAIN ROTOR CHIP DETECTOR AND MAIN ROTOR OIL FILTER, FOUND STEEL SLIVERS AND CHIPS, BRONZE IN THE FILTER, AND OIL DRAINED. TRANSMISSION REMOVED AND SHIPPED TO EUROCOPTER CANADA SDR 20000717SH018Seal · leakingINPUT SEAL, MAIN ROTOR GEARBOX, LEAKING POST LIP. (X)SDR AC2A0000045Pinion Gear · spalledENGINE REMOVED FOR METAL IN OIL. UPON DISASSEMBLY OF GEARBOX, HELICAL POWER TRAIN PINION GEAR PN 6893672 WAS FOUND TO HAVE SPALLING ON GEAR TEETH. HELICAL TORQUEMETER GEAR ALSO HAD SPALLING ON GEAR TEETH. BOTH PARTS WERE REJECTED DUE TO SPALLING. PINION GESDR CA000621006Transmission · deformed(CAN) INSIDE DIAMETER OF GARLOCK SEAL WAS DEFORMED CAUSING FORWARD TRANSMISSION OIL LEAK. (X)SDR 20001026SH001Gear · brokenCHIP LIGHT WAS DETECTED ON AIRCRAFT. CHIP DETECTORS WERE PULLED AND INSPECTED. LARGE PIECE OF GEAR TOOTH WAS FOUND ON PLUG. LARGE PIECE OF GEAR TOOTH BROKE OFF DURING FLIGHT. CAUSE FOR BROKEN GEAR TOOTH WAS DUE TO EXCESSIVE GALLING EXTENDING UP TO FORWARD SDR CA001013015Gearbox · loose(CAN) NOTED ENGINE MOUNT WAS LOOSE. TURBINE TO GEARBOX ATTACHMENT FOUND LOOSE. NOTED ENGINE NOISE AND VIBRATION. GEARBOX REPLACED.SDR CA000925004Gearbox · contaminated(CAN) METAL CONTAMINATION: THREE CONSECUTIVE CHIP LIGHTS, GEARBOX REMOVED. (X)SDR CA000516018Shaft · cracked(CAN) FOLLOWING 1.8 HOUR FLIGHT AND AT BEGINNING OF APPROACH TO AIRFIELD, A BANG WAS HEARD AND A LOW POWER AUTOROTATION WAS CARRIED OUT. ROTORCRAFT WAS LEFT RUNNING FOR ENGINEER TO INSPECT. A VIBRATION WAS FELT THROUGHOUT THE CABIN (MOSTLY IN THE FLOOR) & LOWESDR 20000511SH040Planetary Gear · fractured1ST STAGE PLANETARY PINION GEAR, PN 6435-20411-102, SN 1477, HAVING AN UNKNOWN TT, FAILED IN MAIN GEARBOX, PN 6435-20500-048, SN A6-161. INSP REVEALED TWO-THIRDS OF A 1ST STAGE PLANETARY PINION GEAR TOOTH FRACTURED CAUSING REPLACMENT OF THE FOLLOWING ITEMS DUSDR GJQR0000282Bolt · wornBOLTS WORN TRANSMISSION RESTRAINT. (X)SDR 20000717SH014Connector · corrodedCORRODED PINS AT DIFFERENT CANNON PLUGS AND CORRODED WIRES THROUGHOUT HARNESS. (X)SDR AU000302Connector · shorted(AUS) MAIN TRANSMISSION CHIP DETECTOR CONNECTOR SHORT CIRCUITED ON THE CHIP DETECTOR ACCESS COVER GIVING FALSE INDICATIONS.SDR AU000114Transmission · contaminated(AUS) MAIN TRANSMISSION MAGNETIC PLUG AND OIL FILTER CONTAMINATED WITH METAL.SDR CA000501009Transmission · making metal(CAN) DURING DESCENT, CHIP WARNING LITE ILLUMINATED. MAINTENANCE PERSONNEL THEN CLEANED CHIP PLUG & CHANGED FILTER. SERVICEABILITY CHECK CARRIED OUT AS PER BOEING MAINTENANCE MANUAL SECTION 63-25-00 & 63-23-00 AND TRANSMISSION FOUND SERVICEABLE. HOWEVER, ROTOSDR CA000412015Seal · leaking(CAN) MAIN ROTOR TRANSMISSION INPUT SEAL LEAKING AT 71.6 HOURS SINCE INSTALLATION. SEAL CHANGED, BUT LEAKING AGAIN AT 101.3 HOURS. INPUT SEAL WAS FOUND TO BE .003 THOUSANDS OF AN INCH LARGER DIAMETER.SDR CA000404009Bevel Gear · broken(CAN) PILOT REPORTED A STRANGE NOISE COMING FROM MAIN ROTOR TRANSMISSION WITH CHIP LIGHT ILLUMINATED. SUBSEQUENT INSPECTION FOUND EXCESSIVE METAL ON CHIP DETECTOR. THE TRANSMISSION WAS DISASSEMBLED ENOUGH TO FIND THE SOURCE OF THE METAL (OUTPUT BEVEL GEAR TOOSDR CA000329021Pinion Gear · worn(CAN) M/R TRANSMISSION RECEIVED FOR INSPECTION. DURING VISUAL INSPECTION, IT WAS NOTED THAT THE INPUT PINION HAD UNCOMMON DAMAGE TO THE DRIVE SPLINES. SUBMITTER SUGGESTED CAUSE COULD BE INCORRECT SHIMMING OF ATTACHING PARTS OR LOSS OF TORQUE TO THE NUT (PN 3SDR 20000502SH019Transmission · making metalTRANSMISSION REMOVED FROM SERVICE DUE TO MAKING METAL. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. REPLACEMENT TRANSMISSION RECEIVED WITHOUT MAST MOMENT EQUIPMENT. REMOVED MM EQUIPMENT FROM CORE BEFORE SHIPMENT TO AEC. (X)SDR AU000138Transmission · contaminated(AUS) MAIN ROTOR GEARBOX CHIP DETECTOR METAL CONTAMINATION. THERE WAS NO METAL IN THE OIL FILTER. INVESTIGATION FOUND THE CONTAMINATION TO BE WITHIN LIMITS AND FOLLOWING A GROUND RUN AND HOVER CHECKS, THE AIRCRAFT WAS RETURNED TO SERVICE.SDR CA000518007Planetary Gear · chipped(CAN) METAL FOUND ON THE PLANETARY CHIP DETECTOR (.040 INCH - .060 INCH). TRANSMISSION WAS REMOVED SHORT OFF AND SENT FOR REPAIR.SDR HEEA066508Transmission · making metalTRANSMISSION MAKING METAL.
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