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.

SDR CA981125030Transmission · making metal(CAN) MAIN ROTOR TRANSMISSION MAKING METAL (FLAKES). THE TRANSMISSION INCREASED 25C. SLIGHT OIL PRESSURE DECREASE.Jul 15, 1998 · Bell 206BSDR HEEA0015177Switch · stickingPRESSURE SWITCH STICKS IN OPEN POSITION.Jul 13, 1998 · N405PH · Bell 407SDR HEEA0015173Indicator · fluctuatingTRANS OIL PRESSURE INDICATOR FLUCTUATES DOWN TO ZERO AND BACK UP.Jul 13, 1998 · N417PH · Bell 407SDR 98ZZZX2796Gear · failedMAIN GEARBOX CHIP LIGHT CAME ON IN-FLIGHT. AIRCRAFT WAS SHUT DOWN AND FERROUS METAL FLAKES FOUND ON CHIP PLUG. UPON DISASSEMBLY OF GEARBOX, INPUT GEAR WAS FOUND CRACKED. THE CRACK WAS AT THE BASE OF TOOTH FOR THE ENTIRE LENGTH OF TOOTH AND INTO BEARING AREAJul 13, 1998 · N9119S · Skrsky S61NSDR 98ZZZX2589Transmission · making metalTRANSMISSION CHIP LIGHT ILLUMINATED. EXCESSIVE METAL FOUND ON SUMP CHIP PLUG AND IN OIL FILTER.Jul 3, 1998 · N5748H · Bell 206L1SDR HEEA0015146Seal · leakingMAIN ROTOR SEAL IS LEAKING.Jul 1, 1998 · N3893S · Bell 412SDR HEEA0015144Seal · leakingMAIN ROTOR SEAL IS LEAKING.Jul 1, 1998 · N2261D · Bell 412SDR HEEA0015143Seal · leakingMAIN ROTOR SEAL IS LEAKING.Jul 1, 1998 · N3893N · Bell 412SDR HEEA0015142Seal · leakingMAIN ROTOR SEAL IS LEAKING.Jul 1, 1998 · N1202T · Bell 412SDR HEEA0015099Adapter · pittedMAIN ROTOR GEARBOX ADAPTER HAS PITTING ON SEAL RIDE.Jul 1, 1998 · N5759N · Bell 412SDR HEEA0015084Case Assy · wornMAIN ROTOR GEARBOX HAS WORN INPUT QUILL LINER.Jul 1, 1998 · N6161A · Bell 206L3SDR HEEA0015083Bevel Gear · frettingMAIN ROTOR TRANSMISSION BEVEL GEAR HAS FRETTING ON MATING SURFACE.Jul 1, 1998 · N5759N · Bell 412SDR HEEA0015082Shaft · frettingMAIN ROTOR TRANSMISSION SHAFT HAS FRETTING ON FLANGE.Jul 1, 1998 · N5759N · Bell 412SDR HEEA0015061Transducer · failedTRANSDUCER PEGGING OUT, FUNCTION CHECK BAD, OUT OF TOLERANCE ON INCREASING PRESSURE.Jun 30, 1998 · N86CH · Bolkms BO105SSDR HEEA0015058Bevel Gear Set · spalledSPALLING OF M/R GEARBOX GEAR TEETH. SCRAPPED PARTS AND REPLACED WITH NEW PARTS.Jun 30, 1998 · N4573B · Bolkms BO105SSDR HEEA0015050Sun Gear · spalledTRANSMISSION CAME IN DUE TO METAL IN OIL. REPLACED SUN GEAR.Jun 30, 1998 · N724MB · Bolkms BO105SSDR AU980735Pinion · damaged(AUS) MAIN ROTOR TRANSMISSION PINION GEAR TEETH BRINELLED IN AREA INDICATED IN SB B 244-3. PART TOTAL CYCLES: 896.Jun 30, 1998 · Hughes 269CSDR AU980734Gear · damaged(AUS) MAIN ROTOR TRANSMISSION RING GEAR TEETH BRINELLED IN AREA INDICATED IN SB B 244-3. PART TOTAL CYCLES: 896.Jun 30, 1998 · Hughes 269CSDR CA980713010Case Assy · wrong part(CAN) MAIN TRANSMISSION SUPPORT CASE RECEIVED FROM SUPPLIER IS BELIEVED TO BE UNAPPROVED MILITARY PART. BELL ADVISED THEY HAVE NO RECORD OF THAT S/N PART.Jun 26, 1998 · Bell 212SDR HEEA0014981Transmission · making metalMAIN ROTOR TRANSMISSION MAKING METAL.Jun 24, 1998 · N57416 · Bell 407SDR HEEA0014949Seal · leakingLEAKING OIL FROM GEARBOX TO INSIDE BOOT. ALSO FOUND SEALS P/N B56-40 LEAKING; BEARINGS P/N MS27641-4 AND -5, 2 EACH ROUGH; BOOT P/N 406-312-106-101 DETERIORATED; AND SPINDLES ON TRUNNION ASSY P/N 206-011-726-005 WORN BEYOND LIMITS. REPLACED PARTS.Jun 23, 1998 · N407PH · Bell 407SDR 98ZZZX2523Shaft · defectiveRECEIVED UNIT IN NEW CONDITION AND FOUND THE PLATING WAS PEELING OFF. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jun 23, 1998 · N202LF · Bolkms BO105LSA3SDR 98ZZZX2522Shaft · defectiveRECEIVED SHAFT UNIT IN NEW CONDITION AND FOUND THE PLATING WAS PEELING OFF. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jun 23, 1998 · N202LF · Bolkms BO105LSA3SDR HEEA0014941Indicator · fluctuatesTRANSMISSION TEMPERATURE NEEDLE FLUCTUATES WHEN VIBRATED.Jun 22, 1998 · N33008 · Bell 412SDR HEEA0014890Housing · crackedMAIN ROTOR GEARBOX HELICOIL PULLED OUT AND HOUSING CRACKED.Jun 22, 1998 · Bell 206L1SDR HEEA0014883Bevel Gear · corrodedBEVEL GEAR CORROSION FRETTING ON MOUNTING FACE.Jun 22, 1998 · N1202T · Bell 412SDR HEEA0014882Shaft · corrodedSHAFT CORROSION FRETTING ON MOUNTING FACE.Jun 22, 1998 · N1202T · Bell 412SDR HEEA0014881Shaft · corrodedSHAFT CORROSION FRETTING ON GEAR MOUNTING SURFACE.Jun 22, 1998 · N22347 · Bell 412SDR HEEA0014873Center Case · corrodedMAIN ROTOR GEARBOX HAS CORROSION IN BOLT HOLES.Jun 22, 1998 · N7077B · Bell 206L4SDR HEEA0014845Indicator · fluctuatesTEMPERATURE NEEDLE FLUCTUATES WHEN VIBRATED.Jun 22, 1998 · N33008 · Bell 412SDR HEEA0014795Switch · failedMAIN ROTOR GEARBOX INDICATOR LIGHT FLICKERS.Jun 17, 1998 · N467PH · Bell 407SDR 98ZZZX2585Oil Pump · jammedLOW OIL PRESSURE LIGHT ILLUMINATED IN FLIGHT. A PRECAUTIONARY LANDING WAS MADE. ON SITE INSPECTION DETERMINED THAT A PIECE OF COTTER PIN HAD BROKEN OFF AND WAS CAUGHT IN THE PUMP. THE BROKEN COTTER PIN AND OIL PUMP WERE REPLACED. UPON RUN-UP, SYSTEM CHECKEJun 16, 1998 · N4247V · Skrsky S58ETSDR CA980706019Top Case · broken(CAN) ON SCHEDULED INSPECTION, FOUND GEAR TOOTH BROKEN INSIDE OF TOP CASE. GEAR IS PART OF TOP CASE CASTING.Jun 15, 1998 · Bell 206BSDR HEEA0014778Gear · corrodedMAIN ROTOR GEARBOX GEAR ORRODED AND FRETTED ON MOUNTING SURFACE.Jun 11, 1998 · Bell 212SDR HEEA0014777Shaft · corrodedTRANSMISSION SHAFT IS CORRODED AND FRETTED ON MOUNTING SURFACE.Jun 11, 1998 · N5736J · Bell 212SDR HEEA0014754Input Line · wornGEARBOX INPUT LINE IS WORN.Jun 11, 1998 · N7077B · Bell 206L4SDR CA980707040Bearing · failed(CAN) MAIN TRANSMISSION CHIP DETECTOR. METAL FLAKES BEYOND LIMITS ON LONG MAGNETIC CHIP DETECTOR AND OIL MONITOR PLUG. SUSPECT BEARING FAILURE.Jun 11, 1998 · Bell 206BSDR HEEA0014716Filter Assy · malfunctionedMAIN ROTOR GEARBOX FILTER'S BYPASS BUTTON STAYS PARTIALLY EXTENDED.Jun 10, 1998 · N136AE · Bolkms BK117B2SDR HEEA0014655Gear · corrodedMAIN ROTOR GEARBOX HAS CORROSION ON FLANGE AREA.Jun 8, 1998 · N5759N · Bell 412SDR HEEA0014654Case · corrodedMAIN ROTOR GEARBOX HAS CORROSION ON FLANGE AREA.Jun 8, 1998 · N5759N · Bell 412SDR HEEA0014587Case · crackedM/R CASE IS CRACKED AT SEVERAL PLACES AROUND THE CASE WEBBING.Jun 4, 1998 · N5842 · Bell 206L3SDR HEEA0014509Filter · failedBUTTON WILL NOT STAY RESET.Jun 4, 1998 · N141PH · Bell 412SDR HEEA0014495Case · corrodedGEARBOX NEEDS TO BE EVALUATED FOR REPAIR OF CORROSION OF AREA P, BOTH FLANGES.Jun 3, 1998 · Bell 214STSDR HEEA0014441Shaft · damagedM/R GEARBOX HAS GROOVE CUT IN SHAFT BEYOND LIMITS.Jun 1, 1998 · N427PH · Bell 407SDR 98ZZZX2345Bolt · looseDURING INSPECTION TO LOCATE IN-FLIGHT MEDIUM FREQUENCY VIBRATION, FOUND MGB INPUT PINION FLANGE FLEX COUPLING CRACKED AT AFT LAMINATE. DURING INSPECTION OF THIS PART, FOUND 2 OUT OF 3 BOLTS THAT ATTACH FLEX COUPLING TO FLANGE HAD LOST TORQUE AND WERE STILL SAJun 1, 1998 · N112VT · Snias SA341GSDR 98ZZZX2344Coupling · crackedDURING INSPECTION TO LOCATE IN-FLIGHT MEDIUM FREQUENCY VIBRATION, FOUND MGB INPUT PINION FLANGE FLEX COUPLING CRACKED AT AFT LAMINATE. DURING INSPECTION OF THIS PART, FOUND 2 OUT OF 3 BOLTS THAT ATTACH FLEX COUPLING TO FLANGE HAD LOST TORQUE AND WERE STILL SAJun 1, 1998 · N112VT · Snias SA341GSDR HEEA0014300Pump · leakingTRANSMISSION OIL PUMP LEAKING OIL.May 22, 1998 · N407PH · Bell 407SDR HEEA0014288Pressure Switch · failedTRANSMISSION PRESSURE LIGHT DOES NOT COME ON WHEN THERE IS NO PRESSURE.May 22, 1998 · N407PH · Bell 407SDR HEEA0014255Transmitter · fluctuationOIL PRESSURE FLUCTUATION.May 22, 1998 · N447PH · Bell 407SDR HEEA0014252Tube Assembly · defectiveTUBE ASSY LOWER ROD END BEARING ROUGH.May 22, 1998 · N427PH · Bell 407
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