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 CA040726002Transmission · making metal(CAN) TRANSMISSION CHIP LIGHT, TRANSMISSION SENT TO OVERHAUL SHOP.Jul 6, 2004 · Bell 407SDR 2004F00373Gearbox · making metalAT A HOVER READY FOR TAKEOFF, AFTER INITIAL RUN UP AND PREPARING FOR TAKEOFF MAIN GEAR BOX LIGHT CAME ON. MAINTENANCE DISCOVERED METAL CHIP CONTAMINATION ON LEFT AND RIGHT MAIN GEAR BOX CHIP DETECTORS. TRANSMISSION REMOVED FROM SERVICE. (M)Jul 4, 2004 · N864AL · Skrsky S76CSDR CA040712003Bearing Race · spalled(CAN) TRANSMISSION SENT FOR OVERHAUL DUE TO METAL CONTAMINATION DETECTED WITH A CHIP LIGHT INDICATION. AFTER DISSASSEMBLY BEARING OUTER RACE FOUND TO HAVE SPALLING DAMAGE.Jun 30, 2004 · Bolkms BO105CSDR ERAA097113Caliper · damagedDISC RUBBING CALIPER ASSY. CLEANED, INSPECTED, AND REPAIRED. TESTED.Jun 27, 2004 · N135EH · Bolkms BO105ASDR ALGA096938Gear · defectiveREMOVED GEAR DUE TO UNEVEN WEAR PATTERN, REPLACED PART WITH NEW ITEM.Jun 27, 2004 · N617AL · Bell 407SDR ALGA096933Gear · spalledREMOVED GEAR DUE TO SPALLING AT LOW TIME, REPLACED PART WITH NEW ITEM.Jun 27, 2004 · N617AL · Bell 407SDR ALGA096951Pinion Gear · spalledSPALLING ON GEAR TEETH, THIS IS A RECURRING PROBLEM IN C47B GEARBOXS, WHERE PINION GEARS WEAR PREMATURELY. REPLACED WITH NEW GEAR.Jun 26, 2004 · N617AL · Bell 407SDR ERAA097506Gearbox · splitBLACK FLAKES IN OIL. TORQUE SPLITS. FLAKES FROM OIL PUMP BODY SEPARATOR. WORN POCKET ON OIL PUMP PRESSURE BODY. COMPLIED WITH CEB-1135 GEARBOX COVER REPLACED, INCREASED RIGIDITY AT TORQUE METER SUPER SHAFT BOSS. OVERHAULED GEARBOX.Jun 25, 2004 · N294EH · Bolkms BO105SSDR ERAA097522Blower · chafedCUSTOMER OWNED AIRCRAFT. BLOWER FAN WHERE RUBS. FOUND INBOARD BEARING ROUGH. SCRAPPED BEARING, HOUSING DUE TO EXCESSIVE PITTING. FOD HAS BEEN BETWEEN WHEEL AND HOUSING, NO DAMAGE TO FAN WHEEL, SLIGHT RUB MARKS IN PAINT ON HOUSING, PROBABLY SOMETHING LIKE GJun 24, 2004 · Bolkms BO105SSDR ERAA096633Freewheel Unit · corrodedSERVICE CORROSION ON TEETH. HAS EXTERNAL CORROSION, PITTING, BEYOND LIMITS ON SPUR GEAR ACTION TAKEN: REPACK UNITS BEING STORED FOR EXTENDED PERIODS. SPUR GEAR CHANGED.Jun 18, 2004 · Skrsky S61ASDR ALGA095232Gear · spalledSPALLING ON GEAR TEETH. THIS IS A NEW STYLE GEAR AND THIS GEARBOX WAS REMOVED FOR HIGH VIBES. THIS IS A RECURRING EVENT ON C-47 GEARBOXES. REPLACED GEAR W/NEW PART.Jun 10, 2004 · N487AL · Bell 407SDR ALGA095231Gear · spalledSPALLING ON GEAR TEETH, THIS IS A RECURRING EVENT ON C-47 GEARBOXES. REPLACED GEAR W/NEW PART.Jun 10, 2004 · N487AL · Bell 407SDR TXER095703Epicyclic · making metalMAIN ROTOR GEARBOX EPICYCLIC MAKING METAL.Jun 8, 2004 · N690WR · Urocop EC120BSDR TXER095702Gearbox · making metalMAKING METAL.Jun 8, 2004 · N690WR · Urocop EC120BSDR ALGA094697Tach Generator · wornFOUND SPLINES INSIDE ARMATURE AND ON DRIVSHAFT WORN. DISCREPANCY FOUND ON 900HR. INSPECTION.RETURNING PART TO VENDOR FOR WARRANTY.May 21, 2004 · N5NBFG · Bell 407SDR ALGA094690Tach Generator · wornFOUND SPLINES INSIDE ARMATURE AND ON DRIVSHAFT WORN. DISCREPANCY FOUND ON 900 HR INSPECTION. RETURNING PART TO VENDOR FOR WARRANTY.May 21, 2004 · N266AL · Bell 206L4SDR CA040526004Case · corroded(CAN) A DOZEN STUD HOLES FOUND DEEPLY CORRODED AND NEEDED SPECIAL REPAIR IAW MFG INSTRUCTIONS. THE CORROSION IS CAUSED BY DISSIMILAR METALS AND MOISTURE. MFG CANNOT SOLVE THE PROBLEM DEFINITELY BUT SUGGEST METHODS TO SLOW IT DOWN AND DIMINISH DAMAGE TO CASE.May 20, 2004 · Bell 206L4SDR GAKA144ETransmission · contaminatedWHILE IN CRUISE FLIGHT, MAIN ROTOR TRANSMISSION OIL PRESSURE FLUCTUATION OCCURRED RESULTING IN A FLUCTUATION BETWEEN 65-80 PSI., WITH AN ILLUMINATION OF THE LOW OIL PRESSURE WARNING LIGHT. PILOT LANDED IMMEDIATELY AT HELIPAD. TWO QUARTS OF TRANSMISSION OIL WMay 12, 2004 · N902SL · Doug MD900SDR KBM2004FAAPulley · undertorquedENGINE TO MGB POWER SHAFT FORWARD PULLEY ATTACH HOLES ELONGATED DUE TO ATTACHMENT BOLT TORQUE LESS THAN MINIMUM TORQUE AT ORIGINAL INSTALLATION. REMOVED AND REPLACED. ASSELBL AT FACTORY DURING 5900 HR/ 12 YEAR INSPECTION.May 6, 2004 · N215LA · Snias AS350B1SDR AUS20040386Gear · failed(AUS) MAIN ROTOR TRANSMISSION INPUT PINION GEAR FAILED. GEAR TEETH STARTING TO BREAK DOWN WITH DISTINCT WEAR PATTERN AND PITTING ON THE FLANK OF ALL GEAR TEETH AND ADVANCED BREAKING DOWN OF SOME OF THE TEETH. METAL CONTAMINATION OF TRANSMISSION.May 4, 2004 · Bell 206L1SDR ALGA094321Bearing · spalledTRANSMISSION DISASSEMBLED FOR METAL CONTAMINATION, FOUND BEARING BREAKING DOWN. REMOVED AND REPLACED BEARING.May 3, 2004 · N557AL · Bell 407SDR ERAA097085Transmission · making metalFOUND UNACCEPTABLE AMOUNTS OF ALUMINUM, BRONZE AND METAL FLAKES IN OIL FILTER. BUSHINGS MISSING IN INTERMEDIATE SHAFT BOLT HOLE BORES. NO DRY LUBE ON BEVEL GEARS, BEVEL GEARS SWITCHED SIDES ON LAST O/H, LT PINION AND BEVEL GEAR SCRAPPED (TEETH BREAKING DOWN)Apr 29, 2004 · Bolkms BO105CSDR ERAA096632Oil Cooler · making metalOIL COOLER HAD METAL IN TRANSMISSION OIL FILTER CHANGE IAW BO105 MM. LEAKING IN CORE THE UNIT WAS CLEANED, FLUSHED, OVERHAULED, TESTED AND INSPECTED. UNIT PASSED X RAY INSPETION, NO METAL.Apr 29, 2004 · N135EH · Bolkms BO105ASDR ALGA094182Gear · spalledGEAR HAS HEAVY SPALLING. REMOVED AND REPLACED W/SERVICEABLE PART.Apr 15, 2004 · N537AL · Bell 407SDR ALGA094181Gear · spalledGEAR HAS HEAVY SPALLING. REMOVED AND REPLACED W/SERVICEABLE PART.Apr 15, 2004 · N537AL · Bell 407SDR HEEA094228Bearing · failedTRANSMISSION CHIP LIGHT ILLUMINATED IN FLIGHT. AIRCRAFT LANDED AT POINT SU FUR. MAINTENANCE FOUND BEARINGS IN THE ROTOR BRAKE QUILL HAD FAILED.Apr 12, 2004 · N59806 · Bell 214STSDR AUS20040362Gear · worn(AUS) MAIN TRANSMISSION SUN GEAR PN 206-040-662-101 AND SUN GEAR SHAFT PN 206-040-040-005 WORN BEYOND LIMITS IN SPLINED AREAS. INVESTIGATION FOUND THE SUN GEAR UPPER O RING PN M83248/1-228 WAS TORN AND SLICED IN SEVERAL AREAS AND THE SUN GEAR LOWER O-RING PN Apr 6, 2004 · Bell 206BSDR ALGA093899Gear · spalledFOUND HEAVY SPALLING ACROSS GEAR TEETH OF PTO GEAR.Mar 23, 2004 · N702AL · Skrsky S76ASDR ALGA093898Bearing · spalledMAIN GEARBOX DISASSEMBLED FOR METAL CONTAMINATION, FOUND BEARING BREAKING DOWN.Mar 23, 2004 · N5NBCT · Skrsky S76ASDR BRM2004F00000Transmission · contaminatedENROUTE, (3-20-04, 11:38 PM) THE PILOT NOTED A MAIN ROTOR TRANSMISSION CHIP LIGHT. A PRECAUTIONARY LANDING WAS PERFORMED. UPON INSPECTION OF THE MAGNETIC PLUGS (UPPER AND LOWER) NO METAL WAS FOUND. A LIGHT COAT OF VERY FINE BLACK PARTICLES THAT LOOKED LIKE Mar 20, 2004 · N91LF · Agusta A109ESDR MDR04046Housing · crackedMAIN GEAR BOX (SN A6167) WAS INSTALLED ON AIRCRAFT AND REQUIRED REMOVAL DUE TO A POSSIBLE CRACK FOUND ON THE UPPER HOUSING ON THE RT SIDE. HOUSING APPEARED TO BE SEEPING OIL FROM SUSPECTED CRACK IN THE ARMPIT OF THE UPPER HOUSING. THE SUSPECT AREA WAS LOCALLMar 15, 2004 · N158AC · Skrsky CH54BSDR CA040427013Shaft · broken(CAN) BEARING SIZE DUE TO LACK OF LUBRICATION. DUE TO INCORRECT INSTALLATION AT REPAIR.Mar 12, 2004 · Hughes 269C1SDR MDR04045Housing · crackedDURING ROUTINE FIELD MAINTENANCE INSPECTIONS, A CRACK WAS DISCOVERED UNDER NR 2 INPUT (ARM PIT) APPROXIMATELY 6 INCHES LONG FROM APPROXIMATELY THE 5 TO 8 OCLOCK POSITION. THIS WAS VERIFIED BY FPI. PROBABLE CAUSE IS UNKNOWN.Mar 10, 2004 · N159AC · Skrsky CH54BSDR I05R094206Transmission · making metalTRANSMISSION MAKING METAL REPLACED PART.Mar 8, 2004 · N552BA · Urocop EC135P1SDR CA040309003Filter · inoperative(CAN) MAIN GEAR BOX OIL PRESSURE DROPPED IN FLIGHT. AIRCRAFT RETURNED TO LANDING AREA AND SHUT DOWN. EXAMINATION OF MGB COARSE SCREEN FILTER REVEALED RESIN COATING FROM INSIDE OF MGB HAD FLAKED OFF. MGB REPLACED.Mar 7, 2004 · Skrsky S61NSDR CA040309002Cover · cracked(CAN) CRACK ON LOWER LT LEG OF MAIN GEARBOX REAR COVER DISCOVERED ON DAILY INSPECTION.Mar 4, 2004 · Carson S61LSKRSKYSDR 2004FA0000280Plug · loosePILOT STARTED ENGINE, COMPLETED CHECKLIST AND (BEEPS) IN HEADSET AND VISUAL WARNING ON CAUTION PANEL OF MAIN GEAR BOX (LOW OIL PRESSURE). SHUT DOWN ENGINE AND OPENED COWL, TRANSMISSION FILLED WAS COVERING BOTH ENGINE DECK AND TRANSMISSION DECK. DISCOVERED THFeb 26, 2004 · N1240W · Urocop EC120BSDR ALG2004F00008Chip Detector · contaminatedDURING TAKEOFF, TRANSMISSION LIGHT CAME ON FOR 30 SECONDS THEN IT WENT OFF. MAINTENANCE FOUND CARBON PARTICLES ON PLUG, CHANGED FILTER AND OIL GROUND RAN LEAKED CHECK GOOD.Feb 23, 2004 · N627AL · Bell 407SDR ALGA097415Bearing · spalledTRANSMISSION DISASSEMBLED FOR METAL CONTAMINATION, FOUND ROLLER BEARING BREAKING DOWN. REMOVED AND REPLACED BEARING.Feb 20, 2004 · Skrsky S76ASDR BAQA092605Transmission · making metalMETAL CHIPS ON CHIP DETECTOR ARE PAST SERVICABLE LIMITS. *NOTE* FILTER REMOVED. HARDCARD ENCLOSED. REPLACED WITH SERVICABLE UNIT. 02/18/2004Feb 11, 2004 · N135ME · Urocop EC135P1SDR CA040209005Nozzle · missing(CAN) UNIT INSTALLED IN A/C AFTER REPLACEMENT OF CRACKED CASE BY CUSTOMER US REPAIR FACILITY. AFTER INITIAL TEST RUNS IT WAS REPORTED TO HAVE VERY LOW OIL PRESSURE, AFTER NUMEROUS HOURS OF TROUBLESHOOTING (PRESSURE PUMP, SWITCH, GAUGE REPLACEMENT AND WIRING CHFeb 8, 2004 · Hughes 369DSDR 2004FA0000163Line · crackedAIRCRAFT EXPERIENCED LOW TRANSMISSION OIL PRESSURE. DURING RUN-UP AND LEAK CHECK FOUND TRANSMISSION OIL COOLER LINE P/N 900D3409526105 TO BE LEAKING FROM UNDER STEEL BRADE. REPLACED OIL COOLER LINE, OPS AND LEAK CHECK WERE GOOD. CUT BACK STEEL BRADE ON OLD Feb 4, 2004 · N902PD · Doug MD900SDR CA040202015Tie Rod · sheared(CAN) ONE OF THE THREE BOLTS ATTACHING THE ENGINE TO THE MAIN GEARBOX WAS DISCOVERED SHEARED DURING A TURN AROUND CHECK. THE BOLT WAS SHEARED ABOUT MIDWAY IN THE THREADED PORTION OF THE BOLT. THE ENGINE WAS REMOVED AND AREA INSPECTED IAW WRITTEN PROCEDURES. NOJan 30, 2004 · Snias AS332LSDR CA040203014Bearing Race · spalled(CAN) BEARING SPALLED AND CAUSED A CAUTION LIGHT TO COME ON.Jan 28, 2004 · Bell 206BSDR AUS20040052Hose · leaking(AUS) MAIN TRANSMISSION OIL HOSE LEAKING. FURTHER INVESTIGATION FOUND THE HOSE WAS CHAFING IN THE AREA UNDER THE IDENTIFICATION TAG.Jan 25, 2004 · Bell 412SDR CA040203005Tube · cracked(CAN) DURING THE SCHEDULED INSPECTION CARRIED OUT THE BASE, THE AME NOTICED THAT THE TUBE P/N 3023724 WAS CRACKED BEHIND THE B-NUT AREA. THE CRACKED TUBE WAS REMOVED AND REPLACED.Jan 22, 2004 · Bell 212SDR ERAA092668Sun Gear · corrodedUPPER SUN GEAR WITH ONLY 143.1 HRS HAS NITRITING BREAKING DOWN, TEETH FRETTING AND PITTING. RETURNING ON ERA MMIR NR ERAA0001972 REQUESTING CREDIT.Jan 20, 2004 · N169EH · Bell 412SDR ERAA092667Spider Gear · corrodedSPIDER GEAR WITH ONLY 143.1 HRS HAS NITRITING BREAKING DOWN. TEETH FRETTING AND PITTING. RETURNING ON ERA PACK SLIP NR 5936 REQUESTING CREDIT.Jan 20, 2004 · N169EH · Bell 412SDR CA040129006Beam · cracked(CAN) AIRCRAFT ON HELISKIING WHEN THIS OCCURRED. INSPECTED IAW AD96-156-071(B) R1 PART 1.1, EVERY 30 HOURS OR 150 CYCLES. THIS WAS BEING INSPECTED DUE TO THE CYCLES EVERY 2 OR 3 DAYS. THE CROSSBEAM WAS FOUND SMOKING IN THE REGION OF SUSPECTED CRACK. THE AREAJan 19, 2004 · Snias AS350B1SDR CA040117001Warning Light · illuminated(CAN) AT 5500 FT VFR ENROUTE TO THE PLATFORM, JUST NEARING THE COASTLINE, THE MASTER CAUTION AND INTERMEDIATE GEARBOX CHIP LIGHT ILLUMINATED.Jan 15, 2004 · Skrsky S61N
Back to JASC 6320