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 HEEA966754Gearbox · crackedCRACKED CORE. INVESTIGATE AND ANALYZE CASE.SDR ERAA96204Roller Bearing · making metalGEARBOX MAKING METAL. INNER RACE HAS DAMAGE THAT CAN BE FELT WITH A PROBE.SDR ERAA96203Roller Bearing · making metalNEW BEARING THAT HAS PITTING ON OUTER RACE, GEARBOX MAKING METAL.SDR ERAA96202Bearing · making metalGEARBOX MAKING METAL, OUTER RACE HAS PITS, ROLLERS ARE ROUGH.SDR HCMA9610Seal Magnetic · defectivePART IS DEFECTIVE. LEAKS BADLY.SDR 96ZZZX1068Housing · crackedDURING ROUTINE INSPECTION, A .75 INCH LONG CRACK WAS FOUND IN THE FORWARD RT ATTACHMENT MOUNT. THIS HOUSING IS MANUFACTURED FROM MAGNESIUM WHICH REQUIRES A ROUTINE INSPECTION. C/W SB 61B35-48 REPLACES THIS ITEM WITH AN ALUMINUM HOUSING WITH MUCH THICKER MOUNSDR HCMA962Rear Rotor · worn excessPART IS WORN EXCESSIVELY. REMOVED AND REPLACED.SDR HEEA966623Gear Box · yoke seizedCOULD NOT REMOVE T/R YOKE ASSEMBLY FROM GEARBOX ASSEMBLY.SDR CA960312007Gearbox · teeth wear(CAN)CHIP LIGHT ON. PLUG INSPECTED AND FOUND GRAY PASTE. 23.2 HOURS LATER DURING 600 HOUR INSPECTION PROBLEM FOUND WITH GEAR TEETH.SDR 96ZZZX4105Gearbox · making metalTAIL ROTOR GEAR BOX RECENTLY OVERHAULED. MADE METAL AFTER 154.8 HOURS SINCE OVERHAUL. TAIL ROTOR GEARBOX WAS REPLACED. AIRCRAFT TT: 6,253.8 HOURS.SDR HEEA966487Spider · boot looseDUST BOOT P/N 350A33-2069-20 COMING LOOSE FROM SPIDER ASSY AND SLIDING ON SHAFT.SDR 96ZZZX2359Bevel Gear Set · making metalON LANDING AT DESTINATION, THROTTLE AT FLIGHT IDLE. INTERMEDIATE TAIL ROTOR DRIVE GEARBOX CHIP DETECTOR LIGHT ILLUMINATED. FOUND LARGE CHIP MISSING FROM BEVEL GEAR.SDR HEEA966420Bearing · wornLAMINATED HINGE BEARINGS WORN. INSTALLED NEW TAIL ROTOR HUB ASSEMBLY.SDR CA960129026Seal · leaking(CAN)SEAL LEAKING TO THE POINT WHERE OIL HAS TO BE ADDED DAILY.SDR CA960129024Seal · leaking(CAN)SEAL LEAKING. OIL HAS TO BE ADDED DAILY.SDR CA960129023Seal · leaking(CAN)SEAL LEAKING. REQUIRES OIL TO BE ADDED TO GEARBOX DAILY.SDR CA960122004Bevel Gear · chipped tooth(CAN)CHIP LIGHT ON. CLEANED CHIP PLUG AND DRAINED/FLUSHED T/R GEARBOX. FOUND CHIP FROM BEVEL GEAR SET.SDR HEED95434Packing · leakingT/R OUTPUT SEAL ON TRANSMISSION LEAKING. REPLACED UNITSDR HEED95433Packing · leakingT/R OUTPUT SEAL ON TRANSMISSION LEAKING. REPLACED UNITSDR HEED95432Packing · leakingT/R OUTPUT SEAL ON TRANSMISSION LEAKING. REPLACED UNITSDR HEED95431Tabloc-Nut · seal leakT/R OUTPUT SEAL ON TRANSMISSION LEAKING. REPLACED TAB LOC UNITSDR HEED95430Seal · leakingT/R OUTPUT SEAL ON TRANSMISSION LEAKING. REPLACED UNITSDR 96ZZZX131Housing · crackedDAILY INSPECTION FOUND TAIL ROTOR GEAR BOX CASE CRACKED AT RIGHT MOUNTING STUD.SDR CA951122012Hinge · separating(CAN)TAIL ROTOR VIBRATION. FOUND ELASTOMERIC TO BE SEPARATING.SDR 95ZZZX6348Bolt · wrong partACFT WAS IN FOR A 100-HOUR INSP. MECHANIC PERFORMING TAIL ROTOR GEARBOX MOUNT RE-TORQUE, CUT THE SAFETY WIRE AND THE BOLT PULLED OUT. IT WAS ALSO FOUND THAT 2 OTHER BOLTS WERE ONLY IN PLACE BY 2 THREADS. MECHANIC STATED BOLTS WERE INCORRECT, PN NAS1304-24H,SDR 95ZZZX6979Bearing · looseBEARING UNSTAKED. RMA NR 4004596.SDR 95ZZZX6981Seal · leaksMAGNETIC SEAL LEAKS.SDR 95ZZZX6512Gearbox · misrepairedGEARBOX HOUSING WAS SENT FOR REPAIR 11-30-94 AND WAS RETURNED ON 9-19-95 WITH A SERVICEABILITY TAG AND THE WORK REQUESTED WAS NOT COMPLETED. IT WAS ONE-HALF FINISHED AND COULD NOT BE INSTALLED IN ITS CURRENT CONDITION. REASON IT WAS SENT, WAS FOR EXCESSIVE CSDR 95ZZZX6244Seal · leakingINSTALLED NEW SEAL AND WEAR SLEEVE FOR REPAIR LEAK AT INPUT SEAL. NEW SEAL IS LEAKING AGAIN AFTER VERY SHORT TIME IN SERVICE. A COMMON PROBLEM, BUT NOT SO SOON. INSPECTION INTERVAL FOR GEARBOX IS 3,000 HOURS. CHANGING SEAL 10 TIMES NOT DESIRABLE. SEAL IS SDR 95ZZZX6209Seal · leakingINSTALLED NEW SEAL AND REVERSED WEAR SLEEVE TO FRESH RUNNING SURFACE TO REPAIR LEAK AT INPUT SEAL. NEW SEAL IS LEAKING AGAIN AFTER VERY SHORT TIME IN SERVICE. A COMMON PROBLEM, BUT NOT AFTER SO LITTLE TIME. INSPECTION INTERVAL FOR GEARBOX IS 3,000 HRS. CHASDR TEIL959Seal · deteriorationAFTER ONLY 30 HOURS OF OPERATION WITH NEW STYLE SEAL, SEAL BEGAN TO DETERIORATE AROUND OUTPUT SHAFT SEALING SURFACE INTO OIL CAUSING OIL COLOR TO CHANGE TO BLACK. ACCUMULATION OF RUBBER SEAL MATERIAL ON CHIP PLUG DETECTOR FACE CAUSED CHIP PLUG DETECTOR TO BECOSDR HEEA955593Gear Box · defectiveCOUPLING BACKLASH TOO HIGH. NOTE: PIN DIM IN CR&O CHAPTER 65.20-07 PAGE 33 PARAGRAPH #3B IS INCORRECT. GEARBOX REMOVED DUE TO THIS ERROR. REPAIRED GEARBOX.SDR HEEA955352Spacer · defectiveSEAL LEAKING. REPLACED WITH NEW SPACER AND RETURNED TO SERVICE.SDR 96ZZZX993Gearbox · defectiveHIGH FREQUENCY VIBRATION AND UNABLE TO BALANCE T/R ASSY WHEN INSTALLED ON GEARBOX.SDR HEEA955161Gear Box · making metalGEAR BOX MAKING METAL.SDR 95ZZZX3353Seal · leakTAIL ROTOR GEARBOX REMOVED FROM AIRCRAFT DUE TO LEAKING INPUT SEAL. SEAL MATERIALS APPEAR NORMAL. NO APPARENT DEFECTS. THIS IS A NEW-TYPE SEAL. THIS IS THE SECOND TIME THIS NEW-TYPE SEAL HAS LEAKED A SHORT TIME AFTER INSTALLATION.SDR 95ZZZX3108Bearing · damagedDAMAGED ROLLERS (5 PLACES) ON ROLLER BEARING.SDR HEEA955089Output Gear · wornWORN SPLINES. REPLACED WITH SERVICEABLE PART.SDR HEEA955088Flange · worn splinesWORN SPLINES. REPLACED WITH SERVICEABLE PART.SDR F6LM9598Hinge Laminate · tornTORN BEYOND LIMITS, (LOW LIFE ON THIS PART, SUBMITTER SUGGESTS DUE TO THE HEAT FROM THE EXHAUST.) REPLACED BEARINGSSDR LJER950516Gearbox · under torqueTAIL ROTOR GEARBOX OUTPUT SHAFT RETAINING NUT, PN MS1414526, WAS FOUND SLIPPING AND UNDERTORQUED. DURING 100-HOUR INSPECTION, TAIL ROTOR BLADE ROTATION NOTED MOVING MORE THAN NORMAL GEAR BACKLASH. TEAR DOWN OF THE T/R GEARBOX REVEALED NUT TORQUED TO 75 INCHESDR 95ZZZX3916Seal · leaksSEAL WORN BEYOND LIMITS. LEAKS BAD.SDR HEEA954976Gearbox · leakingREPAIR DUE TO SEALS LEAKING.SDR HEEA954973Fitting · crackedHAIRLINE CRACK ON INSIDE CASTING NEAR L/H UPPER MOUNT HOLE.SDR GJQA9520870Seal · leakingT/R GEARBOX INPUT SEAL LEAKING, ALSO USED 1 EACH M8348/1-230SDR 95ZZZX3914Ball Joint · wornBALL JOINT HAS EXCESSIVE AXIAL PLAY IN BEARING.SDR HEED95197Plug · seal leakingT/R GEARBOX INPUT SEAL LEAKING. ORDER NEWSDR HEED95195Seal · leakingT/R GEARBOX INPUT SEAL LEAKING. ORDER NEWSDR EGRA9541Shaft Seal · leakingOIL SEEPING FROM VERTICAL FIN. REMOVED IGB FROM AIRCRAFT, REPLACED INPUT SEAL.SDR HEED9575Seal · leakingT/R GEARBOX INPUT SEAL LEAKING. ORDER NEW.
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