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 HEEA0014214Gear Box · wornT/R GR BOX OUTPUT SHAFT CHROME PLATING WEAR.SDR 98ZZZX2016Bearing · crackedBEARING CRACKS ARE BEYOND LIMITS. REPLACED WITH NEW BEARING SET.SDR HEEA0014136Bearing · delaminatedONE BEARING DELAMINATED.SDR HEEA0014063Cover · wornFORWARD BORE WORN FROM BEARING SPINNING. REPLACED WITH NEW COVER.SDR 98ZZZX1847Bevel Gear · defectiveCANNOT GET GEAR PATTERN TO MOVE OFF TOE. TRIED IN TWO DIFFERENT GEARBOXES WITHOUT SUCCESS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 98ZZZX1846Hinge · defectiveLAMINATED HINGE DEFECTIVE, RECALLED PER SL 1337-65-97, BATCH 95L. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR HEEA0013993Pinion · defectiveSILVER COATING FLAKING FROM GEAR TOOTH.SDR 98ZZZX1702Gearbox · making metalDURING ROUTINE INSPECTION, MECHANIC FOUND METAL AND EXCESSIVELY DARK OIL IN GEARBOX. REMOVED FOR REPAIR AND REPLACED WITH SERVICEABLE UNIT. CONTROL NR 98-4-8.SDR 98ZZZX1743Center Housing · crackedTAIL ROTOR GEARBOX WAS REMOVED FROM AIRCRAFT DUE TO A CRACK IN THE TAIL GEARBOX CENTER HOUSING WEB ADJACENT TO THE LOWER LEFT GEARBOX ATTACHMENT LUG. ENGINEERING REQUESTED THE QUALITY DEPARTMENT HELP FIND THE CRACKED AREA BECAUSE IT WAS NOT MARKED ON THE PARTSDR HEEA0013861Gearbox · leakingINPUT AND OUTPUT SEALS LEAKING.SDR 98ZZZX3856Gearbox · making metalPILOT LANDED AIRCRAFT AFTER T/R CHIP LIGHT CAUTION LIGHT ILLUMINATED. TAIL ROTOR CHIP DETECTOR WAS INSPECTED. A LARGE AMOUNT OF METAL ACCUMULATION WAS EVIDENT. TAIL ROTOR GEARBOX WAS REMOVED AND REPLACED AND SENT FOR EVALUATION. UPON TEARDOWN INSPECTION, OSDR HEEA0013752Center Case · wornT/R BORE WORN AND LOOSE LINERS (3 EACH).SDR HEEA0013686Center Case · wornT/R BORE NOZZLE RING SEAT AND SUPPORT PIN SEAT DUE TO WEAR.SDR HEEA0013498Gearbox · noisyGEARBOX WAS OVERHAULED AND NEW GEARS WERE INSTALLED. STATIC PATTERNS ON GEARS MATCHED TESTER SHEET AS REQUIRED. AFTER A FLIGHT OF 15 MINUTES CREW HEARD A HIGH PITCH NOISE FROM GEARBOX. GEARBOX WAS DIASSEMBLED AND COULD NOT FIND ANY DISCREPANCIES. NOTICED TSDR HCMA0000205Bearing · wornT/R ROTOR DRIVE BEARING IS WORN BEYOND LIMITS. (X)SDR HEEA0013202Gear Housing · defectiveVERIFICATION OF "B" DIM.SDR HAIHCMA0178Lamification · tornREAR ROTOR LAMIFICATION IS TORN BEYOND LIMITS AND THERE IS NO "J" GAP.SDR 99ZZZX41Case · crackedGEARBOX SENT TO OVERHAUL SHOP FOR OIL LEAK. FOUND TO BE LEAKING THROUGH CRACK. CRACKED AT MOUNTING STUD BOSS.SDR AU980780Seal · leaking(AUS) TAIL ROTOR GEARBOX INPUT SEAL LEAKING. PART TOTAL CYCLES: 15.SDR CA980317088Seal · leaking(CAN) POST FLIGHT WALK AROUND REVEALED OIL LEAK OF TAIL ROTOR GEARBOX. DISAASEMBLY SHOWED THAT INPUT SEAL DUST SEAL LIP HAD PEELED OFF AND WENT INTO THE SEALING LIP ALLOWING GEARBOX TO LOOSE IT''''S OIL DURINGA 40 MINUTE FLIGHT. CHIP DETECTOR WAS CLEAN AT THISSDR HEEA0013030Lever · wornT/R GR BOX LEVER CONTROL BUSHINGS WORN.SDR 98ZZZX1252Bearing Cup · failedON GROUND RUN UP, HAD BEARING FAILURE IN INPUT QUILL ASSEMBLY. COMPONENT P/N 7635705000041.SDR 98ZZZX1251Bearing Cone · failedON GROUND RUN UP, HAD BEARING FAILURE IN INPUT QUILL ASSEMBLY. COMPONENT P/N 7635705000041.SDR HAIHCMA0160Lamification · tornREAR ROTOR LAMIFICATIONS ARE TORN BEYOND LIMITS .SDR HEEA0012626Gearbox · leakingT/R GR BOX INPUT AND OUTPUT SEALS LEAKING OIL. ALSO GEARBOX VENT LINE LEAKING EXCESSIVELY.SDR 98ZZZX863Gearbox · crackedDURING PRE-FLIGHT INSPECTION, A CRACK IN THE TAIL ROTOR GEARBOX HOUSING WAS FOUND IN THE AREA OF THE MOUNTING STUDS.SDR 98ZZZX915Bevel Gear Shaft · defectiveGEAR COULD NOT GET A CONTACT PATTERN WITHIN ACCEPTABLE LIMITS WHEN MATCHED TO BEVEL. GEAR SHAFT P/N 4639311042, S/N 978. REMOVED AND REPLACED.SDR 98ZZZX912Bearing · roughBEARING WAS ROUGH WHEN INSTALLED ON BEVEL GEAR SHAFT. REMOVED AND REPLACED.SDR 98ZZZX911Bearing · defectiveOUTPUT SHAFT WOULD NOT FIT THROUGH ROLLERS WHEN BEARING WAS INSTALLED IN COVER OF T/R GEARBOX. REMOVED AND REPLACED.SDR 98ZZZX910Bearing · roughBEARING WAS ROUGH WHEN INSTALLED ON LEVER GEAR SHAFT. REMOVED AND REPLACED.SDR HEEA0012326Thermovalve · defectiveMETAL CONTAMINATION IN TRANSMISSION.SDR HEEA0012325Oil Cooler · contaminatedMETAL CONTAMINATION IN TRANSMISSION.SDR HEEA0012324Panel Assy · damagedTRANSMISSION ASSY DAMAGE ON R/H TOP SIDE.SDR HEEA0012265Bearing · separationRUBBER SEPARATION.SDR HEEA0012176Bevel Gear · pittedLARGE PIT ON ONE EACH GEAR TOOTH. REPLACED WITH SERVICEABLE GEAR SET.SDR 97ZZZX5215Bearing · galledTAIL ROTOR GEARBOX DISASSEMBLED FOLLOWING CHIP LIGHT INDICATION. FOUND OUTPUT SHAFT DUPLEX BEARING SET BAD. INNER RACE OF BEARING SEVERELY GALLED AND FLAKING. SUBMITTER STATED THIS WAS THE SECOND OCCURRENCE OF THIS TYPE FAILURE WITHIN 600 HOURS, AND 17 MONSDR HEEA0012167Bearing · separationBEARING RUBBER SEPARATION.SDR CA971219010Shim · misrepaired(CAN) TAIL ROTOR GEARBOX ASSEMBLY WAS REMOVED FROM AIRCRAFT FOR CORROSION. BACKLASH OF GEARS WAS FOUND TO BE 0.055 INCH OVER ALLOWABLE LIMITS. GEARS WERE SCRAPPED BECAUSE OF IMPROPER WEAR PATTERN AND LOADING.SDR 97ZZZX5216Coupling · crackedCOUPLING WAS FOUND CRACKED IN 7 PLACES. IT WAS LOCATED AT THE INTERMEDIATE GEARBOX OUTPUT FLANGE. THE PREVIOUS COUPLING WAS ALSO CRACKED. THE RUN-OUT WAS CHECKED AND FOUND WITHIN MANUFACTURER'S LIMITS. THE NR 5 T/R DRIVESHAFT AND INTERMEDIATE GEARBOX WERESDR 98ZZZX1240Bearing · defectiveTAIL ROTOR BEARING IS DEFECTIVE PER SL 1337-65-97, DATED 11-24-97.SDR HEEA0012115Sleeve Assy · corrodedSLEEVE ASSY HAS CORROSION ON O'RING GROOVE. REPLACED WITH SERVICEABLE SLEEVE.SDR HEEA0012114Case Assy · corrodedCASE ASSY HAS EXCESSIVE CORROSION AT O'RING GROOVE AND LUGS. REPLACED WITH SERVICEABLE CASE.SDR 97ZZZX4933Case · corrodedWHILE TROUBLESHOOTING FOR A LOOSE TAIL ROTOR GUARD IN TAIL ROTOR GEARBOX HOUSING, PULLED THE GUARD OUT OF THE GEARBOX AND FOUND FERTILIZER PACKED INTO CAVITY. WHILE SCRAPING FERTILIZER OUT OF CAVITY, FOUND CORROSION HAD EATEN THROUGH MAGNESIUM HOUSING. THE PSDR HEEA0011985Gear Box · failedINTERMEDIATE GR BOX MAKING METAL.SDR HEEA0011958Chip Detector · shortedCHIP DETECTOR SHORTED LIGHT COMES ON WHEN INSTALLED.SDR HEEA0011820Case Assy · corrodedCASE ASSY CORROSION ON MOUNTING FLANGE.SDR HEEA0011819Sleeve Assy · corrodedSLEEVE ASSY HAS CORROSION ON FLANGE AREA.SDR HEEA0011793Bearing · separationBEARING SEPARATION.SDR HEEA0011761Seal · defectiveREPLACE SEAL AND PACKINGS.SDR HEEA0011749Gear Box Assy · defectiveT/R GR BOX CHROME COMING OFF OUTPUT SHAFT.
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