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.
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 HEEA0012214Upper Housing · wornUPPER HOUSING BUSHING BORE WORN IN AREA 3.SDR HEEA0012196Lube Pump · fluctuatesAFTER INSTALLATION OF TRANSMISSION AND UPON TESTING OF TRANSMISSION: PUMP FLUCTUATES SEVERELY.SDR HEEA0012178Top Case · damagedFOUND EXCESSIVE MECHANICAL DAMAGE NEAR THE PYLON MOUNT AREA, WHERE THE SHIMS OF THE SUPPORT BEAMS MADE CONTACT. REPLACED WITH SERVICEABLE PART.SDR 98ZZZX666Hose · leakingOIL HOSE LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 98ZZZX2529Pump · failedMGB OIL PUMP FAILED BACK LASH. REMOVED AND REPLACED PUMP WITHIN 200 HOURS PER MWC.SDR HEEA0012117Transmission · spalledTRANSMISSION BEVEL GEARS HAVE EXCESSIVE SPALLING ON S/N 2195 AND MINOR ON S/N 2310 T.T. 3392:45 (TOOTH FAILURE) PINION S/N 3142, T.T. 353:20 SPALLING ON TOOTH (ROOT AREA) EXCESSIVE DENTS ON BEARINGS 2 EACH 4638303081, T.T. UNKNOWN AND 1 EACH 4638302025, SSDR HEEA0012109Sun Gear · pittedSUN GEAR SPLINES PITTED. REMOVED FROM TRANSMISSION S/N B51797, T.T. 3329:35, TSO 3329:35, TSI 1584:05. REPLACED WITH SERVICEABLE SUN GEAR.SDR HEEA0012088Upper Housing · flawedUPPER HOUSING CASTING FLAW.SDR HEEA0012061Pump · leakingPUMP SEAL LEAKING.SDR HEEA0012055Tube · pittedGR BOX TUBE SEAL RIDE PITTED.SDR 98ZZZX449Bendix Shaft · failedBENDIX SHAFT FAILED IN TRANSMISSION, 4649001006, SN 39. REMOVED AND REPLACED.SDR 98ZZZX448Clutch Assy · failedCLUTCH ASSY FAILED IN TRANSMISSION 4649001006, SN 39. REMOVED AND REPLACED.SDR 98ZZZX447Clutch Race · failedCLUTCH OUTER RACE FAILED IN TRANSMISSION 4649001006, SN 39. REMOVED AND REPLACED.SDR HEEA0011979Seal · leakingSEAL LEAKING.SDR HEEA0011951Case Assy · corrodedXMSN CASE ASSY CORROSION ON TOP FLANGE AND PILOT DIAMETER WORN.SDR HEEA0011865Shaft · corrodedCORROSION ON OUTBOARD FACE. DENTS ON ROLLER BEARING RACE ON SHAFT.SDR 97ZZZX4859Oil Pump · damagedOIL PUMP SEIZED ON START-UP. NO SHEAR SHAFT WAS INCORPORATED IN OIL PUMP. SEIZURE CAUSED DAMAGE TO PUMP DRIVE RING GEAR TEETH INSIDE TRANSMISSION ASSY AS WELL AS OIL PUMP ASSY. IF SHEAR SHAFT WAS INCORPORATED IN OIL PUMP, ONLY PUMP WOULD HAVE NEEDED CHARGINSDR 97ZZZX4858Oil Pump · seizedOIL PUMP SEIZED ON START-UP. NO SHEAR SHAFT WAS INCORPORATED IN OIL PUMP. SEIZURE CAUSED DAMAGE TO PUMP DRIVE RING GEAR TEETH INSIDE TRANSMISSION ASSY AS WELL AS OIL PUMP ASSY. IF SHEAR SHAFT WAS INCORPORATED IN OIL PUMP, ONLY PUMP WOULD HAVE NEEDED CHARGINSDR HEEA0011798Filter Assy · malfunctionedFILTER ASSY BYPASS INDICATOR DOES NOT PROPERLY OPERATE.SDR HEEA0011797Gearbox · making metalMAIN GR BOX MAKING METAL.SDR HEEA0011746Casing · wornMGB CASING BUSHING BORE WORN.SDR HEEA0011735Seal Assy · leakingSEAL ASSY LEAKING.SDR 97ZZZX4822Sungear · wornSPLINES SEVERELY WORN AND 3 CRACKED. SUSPECT CAUSE DUE TO LENGTH OF CALENDAR TIME INSTALLED INDICATING A BREAK DOWN OF THE LUBRICANT. PERIOD OF INSTALLATION WAS 13 YEARS. SUBMITTER RECOMMENDS A CALENDAR LIMITATION OF 4 YEARS AS WELL AS THE EXISTING HOURLY FSDR 97ZZZX4710Gearshaft · wornTRANSMISSION GEARSHAFT SPLINES SEVERLY WORN. SUSPECT CAUSE DUE TO LENGTH OF CALENDAR TIME INSTALLED INDICATING BREAKDOWN OF THE LUBRICANT. PERIOD OF INSTALLATION WAS 13 YEARS. RECOMMEND A CALENDAR LIMITATION OF 4 YEARS AS WELL AS THE EXISTING HOURLY FREQUENSDR HAIGJQR0148Thermoswitch · shortedSHORTED - KEEPS LIGHT ON. REPLACED WITH NEW PART FROM CSF.SDR HAIGJQR0147Seal · leakingSEAL LEAKING AN UNACCEPTABLE AMOUNT OF OIL. REPLACED WITH NEW SEAL FROM BHT.SDR HEEA0011636Stop · deterioratedRUBBER STOP DETERIORATED.SDR HEEA0011622Transmission · making metalM/R TRANSMISSION MAKING METAL.SDR HEEA0011570Transmission · making metalMETAL IN OIL (LOWER CHIP PLUGS). NOTE: TOP CASE P/N 406-040-052-107, S/N A788, REMOVED WITH TRANSMISSION, T.T. 1054:35 HOURS.SDR HEEA0011499Expansion Pin · wornEXPANSION PIN WEAR ON BUSHINGS.SDR CA971121004Sleeve · cracked(CAN) FRENCH AD T97-303-066, REQUIRED INSPECTION OF THE SLEEVE, SPLINED SHAFT. INSPECTION INCLUDED A DYE PENETRANT OF SHAFT WHICH DETECTED TWO SMALL WEAR MARKS ON THE FRONT OF THE SHAFT ABOUT 120 DEGREES APART. FURTHER INVESTIGATION FOUND THAT THESE WEAR MARSDR HEEA0011414Transmitter · failedFALSE INDICATION.SDR HEEA0011345Oil Temp · fluctuatesGR BOX OIL TEMP FLUCTUATES 70 DEGREES C AT MID RANGE.SDR HEEA0011272Indicator · sticksPRESSURE NEEDLE STICKS BETWEEN 40 AND 50 PSI.SDR HEEA0011265Gear · mis mfgGEAR MISMANUFACTURED.SDR CA971020017Transmission · failed(CAN) METAL PARTICLES ON MAGNETIC CHIP PLUG OF SIZE AND QUANTITY DEEMED UNACCEPTABLE BY THE MANUFACTURER.SDR HEEA0011220Transmission · pitted bearingFOUND EXCESSIVE PITTING ON BEARINGS: 2 EA. SB3318-101/201, 2 EA. SB3264-102/202, 2 EA. SB2167-101, 2 EA. SB2151-107, 2 EA. SB3354-102/202, 2 EA. SB3317-101/201, 2 EA. SB3304-102/202, 2 EA. SB3316-101/201, 2 EA. SB2054-101, 1 EA. SB3408-101/201, 1EA. SB3407-10SDR HEEA0011219Input Housing · crackedINPUT HOUSING CRACKED. REPLACED WITH NEW INPUT HOUSING.SDR HEEA0011218Input Housing · crackedGR BOX HOUSING CRACKED. REPLACED WITH NEW INPUT HOUSING.SDR HEEA0011217Input Housing · crackedGR BOX INPUT HOUSING CRACKED. REPLACED WITH NEW INPUT HOUSING.SDR HEEA0011195Shaft · wornSHAFT SPLINES WORN MIC. READING .518. REPLACED WITH SERVICEABLE SHAFT.SDR HEEA0011143Indicator · failedOIL LEAKING INTERNALLY - TEMP. NEEDLE STICKS.SDR 97ZZZX4492Transmission · making metalTRANSMISSION GENERATING CHIP LIGHTS SINCE NEW ON AVERAGE OF 7-10 HOURS OF OPERATION. MFG SUGGESTED LESS SENSITIVE CHIP PLUG. XMSN CONTINUED TO GENERATE METAL. ACFT REMOVED FROM SERVICE WHEN PIECES REACHED .25 INCH IN LENGTH. MFG HAS NO PUBLISHED CRITERIA FSDR HEEA0011111Indicator · failedGR BOX OIL PRESS SIDE DOESN'T INDICATE.SDR HQEA0000013Transducer · pins failedTHE TRANSMISSION OIL PRESSURE WAS ERRATIC. TWO OF THE THREE PINS FOR CONNECTOR FELL OUT OF THE TRANSDUCER. INSTALLED NEW TRANSDUCER. (X)SDR CA971007002Case · leaking(CAN) TRANSMISSION STARTED LEAKING OIL. CRACK FOUND IN LOWER CASE. OIL COMING FROM MIXBOX.SDR HEEA0011032Center Case · corrodedCORRODED IN BOLT HOLES BEYOND LIMITS. REMOVED FROM A/C SERIAL NUMBER 52119.SDR CA970916017Screw · wrong part(CAN) DURING DISASSEMBLY OF DRIVE SHAFT, 3 OF 12 SCREWS FOUND WERE THE WRONG TYPE. THERE WAS NO SPLIT PIN HOLE, AND THEY HAD BEEN INSTALLED WITH A HEXAGONAL, INTERNAL LOCK NUT. THE ENDS HAD BEEN CENTER PUNCHED TO PEEN ENDS OVER. SCREWS SHOULD BE CASTELATEDSDR 97ZZZX5059Switch · failedTRANSMISSION OIL PRESSURE LIGHT ILLUMINATES DURING FLIGHT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 97ZZZX4412Bore Liner · displacedMAIN TRANSMISSION OIL PRESSURE DROPPED TO 30.35 PSI AND REMAINED STEADY. FOUND RT BEVEL GEAR OIL JET BORE LINER BACKED OUT CAUSING OIL LEAKAGE ON TRANSMISSION. REPAIRED RT BEVEL GEAR OIL JET BORE LINER IAW S76 OVERHAUL AND REPAIR INSTRUCTIONS 76350-065 SECTI
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