JASC 6520
Service difficulty reports · 865
Reports filed under 6520 · Tail 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 = '6520' 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 = '6520' 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 HEEA064843Spline Adapter · strippedSPLINE STRIPPED.SDR HEEA064668Adapter · damagedSPLINE DAMAGED.SDR CA000110002Bearing · making metal(CAN) INPUT ALIGNMENT BEARING MAKING METAL (CHIP LITE IN FLIGHT). GEARBOX STRIPPED TO DETERMINE CAUSE OF METAL GENERATION.SDR HEEA064658Adapter · wornSPLINES WORN CONSIDERABLY ON THE TRANSMISSION OIL PUMP SIDE.SDR CA991007024Gear · worn(CAN) GEAR TOOTH MAKING METAL DUE TO PREMATURE WEAR. GEAR PAIR S/N ZF4956. GEAR PAIR REPLACED.SDR CA991007023Gear · worn(CAN) TAIL ROTOR GEARBOX MAKING METAL. PREMATURE WEAR OF GEAR TEETH/GEAR PAIR S/N ZF4912. GEAR PAIR WAS REPLACED.SDR CA991209010Gearbox · making metal(CAN) UNIT MAKING METAL (GENEROUS AMOUNTS).SDR CA991209008Bearing · failed(CAN) UNIT FAILED THE ROTATIONAL DRAG TORQUE CHECK SET OUT IN DGAC AD 1999-085-076(A)R2.SDR 99ZZZX4090Stud · failedMOUNTING STUDS, 6 EACH, FAILED SUB-SURFACE AT 90 DEGREE GEARBOX MOUNTING FLANGE (APPARENT TENSILE FAILURE). SUBMITTER SUSPECTED PREVIOUS VIBRATORY OR OVER-TORQUE DAMAGE TO MOUNTING STUDS.SDR HEEA064458Rod · wornPITCH ROD BEARINGS WORN. SERIAL NUMBERS REMOVED ARE S2863 AND S2250. REPLACED WITH SERIAL NUMBERS S3693 AND S3624.SDR HEEA064457Rod · wornPITCH ROD BEARINGS WORN. REPLACED WITH SERIAL NUMBERS S3613 AND S3845.SDR HEEA064456Rod · wornPITCH ROD BEARINGS WORN. REPLACED WITH SERIAL NUMBERS S3672 AND S3739.SDR HEEA064454Gearbox · making metalGEARBOX MAKING METAL.SDR 99ZZZX4578Case · wornPRE-FLIGHT INSPECTION FOUND MOUNTING PADS WORN BEYOND LIMITS IN BHT 407 CR&O MANUAL. ONE EACH DOW ALIGNMENT PIN BROKEN. FURTHER TEAR-DOWN REVEALED HIGH GEAR BACKLASH AND SCARING OF THE GEAR TEETH. POSSIBLY DUE TO LOW OR ABSENCE OF OIL AT THE SAME TIME. HISDR HEEA064335Seal · pittedSEAL PITTED. REFERENCE: DMR NR 686436.SDR 99ZZZX3804Hinge · crackedCRACKS IN RUBBER, COULD NOT BALANCE TAIL ROTOR BLADES.SDR CA000404010Gearbox · making metal(CAN) MAKING METAL. FERROUS FLAKES SET OFF THE CHIP LIGHT. DRAINING OF THE OIL REVEALED NON-FERROUS METAL AS WELL. OIL HAD APPEARANCE OF MILKY PAINT.SDR HEEA063274Gear · scoredBEARING SEAT SCORED. REPLACED WITH SERVICEABLE GEAR ASSY.SDR HEEA063273Shaft · failedFAILURE IN THREAD AREA OF OUTPUT SHAFT. REPLACED WITH SERVICEABLE OUTPUT SHAFT.SDR HEEA063271Shaft · corrodedGEARBOX REMOVED DUE TO CORROSION AND WEAR ON SPLINES. FOUND 1 EACH SPLINE BROKEN. REPLACED WITH SERVICEABLE OUTPUT SHAFT.SDR CA991028037Seal · leaking(CAN) INPUT SEAL LEAKING HYDRAULIC FLUID. NEW SEAL INSTALLED.SDR 20000713SH018Bearing · failedTHIS HAS BEEN THE SECOND OCCURRENCE IN WHICH THE T/R SPHERICAL BEARINGS HAVE FAILED. THE FIRST OCCURRED AT ACTT: 138.2 HOURS IN WHICH THE MECHANIC FOUND THE BEARING ELASTOMERS TORN BEYOND LIMITS. THE SECOND FAILURE OCCURRED AT 748.7 HOURS ACTT, PART TT, 610SDR HEEA063417Housing · crackedHOUSING CRACKED AT MOUNTING EAR. REPLACED WITH SERVICEABLE PART.SDR HEEA063125Seal · leakingSEAL LEAKING.SDR HEEA063097Seal · leakingSEAL LEAKING.SDR HEEA062999Gearbox · making metalTAIL ROTOR GEARBOX MAKING METAL. REFERENCE: DMR NR 686197.SDR HEEA063008Bearing · wornBALL END BEARINGS WORN.SDR HEEA062907Bevel Gear Set · spalledBEVEL GEAR SET SPALLING.SDR HEEA062906Transmission · crackedTAIL ROTOR TRANS HAD CRACKED MAIN CASE. REPLACED WITH SERVICEABLE PART.SDR HEEA062831Gearbox · damagedCOULD NOT MOUNT GEARBOX - FOUND STUDS BENT. REPLACED WITH SERVICEABLE ASSY.SDR HEEA062755Bearing · roughBEARING ROUGH WHEN ROTATING. REFERENCE: MA NR R019985.SDR HEEA062750Rod · crackedCRACKED BUSHING. REFERENCE: RMA NR R020074.SDR HCMA066335Hinge · wornBEARINGS WORN BEYOND LIMITS.SDR CZMA082748Gearbox · making metalEXCEESIVE METAL DEPOSITS ON CHIP DETECTOR REPLACED GEARBOX WITH NEW PART FROM MANUFACTURERSDR HEED064579Housing · corrodedTAIL ROTOR GEARBOX S/N: A239-00202 REMOVED FROM AIRCRAFT DUE TO LEAKING. FOUND OUTPUT HOUSING (ABOVE) QUADRANT ATTACHMENT BOLT HOLE AREA CORRODED. REPLACED WITH NEW OUTPUT HOUSING.SDR HEEA062525Gearbox · corrodedTAIL ROTOR GEARBOX HAS EXCESSIVE CORROSION ON OUTPUT SHAFT SPLINES.SDR HEEA062503Gearbox · corrodedTAIL ROTOR ASSEMBLY RUSTED TO SPLINES ON T/R GEARBOX.SDR HCMA075172Bearing · tornPART IS TORN BEYOND LIMITS AND THE T/R WILL NOT BALANCE.SDR HEED064537Chip Detector · looseCHIP DETECTOR HAS PLUG LOOSE IN HOUSING AND BODY VALVE WILL NOT SEAT. ORDERED REPLACEMENT.SDR 99ZZZX2503Hinge · crackedRUBBER BLOCK IS CRACKED AND DISTORTED.SDR CA990521004Gearbox · making metal(CAN) TAIL ROTOR GEARBOX MAKING DOME SHAPED METAL CHIPS. SUSPECT BEARING FAILURE. ONE OTHER SIMILAR OCCURRENCE REPORTED.SDR HEEA061814Gearbox · seizedTAIL ROTOR SPIDER BEARING SEIZED. ASSEMBLY THEN BROKE AT PIPE.SDR 99ZZZX1718Seal · leakingINPUT SEAL LEAKING. REPLACED WITH NEW SEALS FROM BELL HELICOPTER.SDR HEEA061789Case · corrodedTAIL ROTOR GEARBOX CORRODED ON CASE ASSEMBLY.SDR HEEA061325Boot · splitOUTPUT SEAL BOOT ON HOUSING SPLITTING.SDR HEEA061324Bearing · wornWORN TRUNNION BEARING.SDR HEEA061173Gearbox · leaksLEAK FROM INPUT AND MAYBE FROM OUTPUT IN TAIL ROTOR GEARBOX.SDR HEEA060967Gearbox · corrodedCORRODED SPLINES WHERE TAIL ROTOR IS MOUNTED.SDR HEEA060705Gearbox · corrodedCORROSION PITS ON OUTPUT SHAFT.SDR 99ZZZX1236Balance Wheel · damagedTEAR-DOWN TO PERFORM REPAIR. BALANCE WHEEL PN 206-011-716-001 NOT TORQUED ON SHAFT, CAUSED WHEEL AND SHAFT TO BE DAMAGED BEYOND LIMITS.
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