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 2017FA0000200Gearbox · crackedWHILE DOING A ROUTINE POST FLIGHT INSPECTION, THE TAIL ROTOR GEARBOX WAS FOUND TO BE LEAKING FLUID. AFTER CLEANING THE FLUID THE TAIL ROTOR GEARBOX HAD A 2.5 INCH CRACK. THIS GEARBOX IS INSTALLED ON A UH72A MILITARY VERSION OF THE EC145.SDR QMLA2017020417014Gearbox · making metalAFTER TAKEOFF, THE TAIL ROTOR CHIP LIGHT ILLUMINATED, AND THE PILOT WAS ABLE TO CLEAR THE LIGHT. THE PILOT THEN DIVERTED AND DECLARED AN EMERGENCY. BEFORE THE AIRCRAFT COULD REACH THE DIVERSION AIRPORT IT WAS DECIDED TO LAND IMMEDIATELY DUE TO PILOT FEELING VISDR QMLA2016120616138Gearbox · making metalDURING RUN UP OF AIRCRAFT FOR A FLIGHT, TAIL ROTOR CHIP LIGHT ILLUMINATED. PILOT ABORTED TAKEOFF AND CALLED MECHANIC. MECHANICS INSPECTION OF TAIL ROTOR CHIP DETECTOR REVEALED A 3MM METAL CHIP IDENTIFIED AS CATEGORY E INDICATING A SIGNIFICANT FAILURE.SDR QMLA2016092216108Gearbox · crackedDURING DAILY INSPECTION OF AIRCRAFT, MECHANIC FOUND HAIRLINE CRACK IN PAINT ON TAIL ROTOR GEARBOX. PAINT WAS REMOVED DYE PENETRANT INSPECTION WAS PERFORMED. CRACK WAS VERIFIED.SDR HDNA2016F00191Gearbox · brokenDURING REMOVAL OF THE TAIL ROTOR GEARBOX FOR TBO CHANGE, WE FOUND THAT THE ATTACHING STUD WAS SHEARED OFF AT THE TAIL BOOM ATTACHMENT POINT.SDR QMLA2016091916105Gearbox · making metalDURING THE COMPLETION OF AAIP C 0521 100 HOUR INSPECTION STEP 13 NOTICED A EXCESSIVE AMOUNT OF FUZZ ON THE MAGNETIC CHIP DETECTOR. REFERENCED AMM 65-22-00,6-1 AND DETERMINED THE WEAR FELL INTO THE MASSIVE AMOUNT OF FUZZ CATEGORY AND DEEMED THE GEARBOX TO BE CHSDR QMLA2016082316096Gearbox · making metalTAIL ROTOR CHIP INSPECTION REQUIRED AFTER 10HR SHOWED FUZZ PRESENT. AMM REQUIRES GEARBOX TO BE CHANGED IF ANY IS PRESENT DURING INSPECTION. THIS ACFT REMAINS OUT OF SERVICE AT THE TIME OF THIS SUBMISSION WHILE THE TAIL ROTOR GEAR IS REPLACED.SDR QMLA2016080516090Gearbox · making metalWHILE PERFORMING SCHEDULED INSPECTION. DISCOVERED FOUR SMALL METAL FLAKES ON INTERMEDIATE GEARBOX CHIP DETECTOR. NOT NUMEROUS OR LARGE ENOUGH TO CAUSE A CAUTION LIGHT TO ILLUMINATE. NO METAL DEBRIS ALLOWED IAW MAINTENANCE MANUAL. GEARBOX REMOVED FROM AIRCSDR 5HAS2016FA0000307Seal · failedCLUTCH ASSEMBLY INPUT SEAL FAILURE RESULTING IN ATF OIL LEAKAGE.SDR FF6R2016FA0000050Gearbox · corrodedRECEIVED TAIL ROTOR GEARBOX AFTER REPAIR. DURING RECEIVING INSPECTION CORROSION NR CORROSION PITTING WAS NOTED ON THE OUTPUT SHAFT IN SEVERAL AREAS ALONG THE SHAFT. THIS IS A NO DAMAGE AREA AS DEFINED O/H MANUAL, MRV 34, 65.20.20.820. THE GEARBOX WAS REJECTEDSDR EVCA20150930Gearbox · unserviceableWHEN PERFORMING OIL CHANGE OF TAIL ROTOR GEARBOX, FOUND OIL REMAINING IN GEARBOX TO ONLY MEASURE APPROX 1 OZ. FLUID LOSS APPEARED TO ORIGINATE FROM TAIL ROTOR PITCH CHANGE CONTROL ROD SEAL.SDR CA151019006Support · cracked(CAN) THE PILOT COMPLAINED OF HAVING FELT A SEVERE VIBRATION ON PEDALS AND SHAKING OF INSTRUMENTS CONSOLE. MAINTENANCE PROCEED TO INSPECT THE ACFT AND FOUND THAT THE TAIL ROTOR GEAR BOX SUPPORT HAD BROKEN OFF ON ONE STUD. NORMAL LANDING WAS PERFORMED WITHOUSDR 9EKA2015052720Case · cracked90 DEGREE TAIL ROTOR GEAR BOX LOWER LT CASE AROUND MOUNTING STUD BROKEN.SDR CA150519023Gear · damaged(CAN) UPON INSPECTION OF THE GEAR DURING O/H OF THE GEARBOX, IT WAS FOUND THAT 1 OF THE ATTACHMENT BOLT HOLES HAD NO CHAMFER WHERE THE BOLT HEAD MEETS THE GEAR FACE. THIS RESULTED IN DAMAGE TO THE SHANK AREA UNDERNEATH THE BOLT HEAD.SDR CA150318009Lock Nut · cracked(CAN) AT LAST 100 HRS INSPECTION OF HELICOPTER, TT 3276,5 HOURS, INSPECTED THE TAIL ROTOR SELF LOCKING NUT AND FOUNDED IT CRACKED AT HALF, REPLACED IT FOR A NEW NUT.SDR HDNA2015F00038Gearbox · making metalDURING GROUND RUNS AFTER MAJOR INSPECTION, TAIL ROTOR INTERMEDIATE GEARBOX MADE EXCESSIVE METAL.SDR QMLA2014100814120Gearbox · unserviceableWHILE PERFORMING D1011 INSPECTION, TAIL ROTOR GEARBOX WAS REMOVED. UPON INSPECTION OF GEARBOX FOUND THE TWO MOUNTING STUDS LOOSE IN THE TAIL ROTOR GEARBOX. THIS GEARBOX IS IN THE PROCESS OF BEING REPLACED WITH A SERVICEABLE PART AT THE TIME OF THIS SUBMISSIOSDR O84A201409260159Gearbox · making metalDURING APPROACH, TAIL ROTOR CHIP LIGHT ILLUMINATED, ATTEMPT TO BURN THE CHIP WAS UNSUCCESSFUL AND A LANDING WAS MADE. DUE TO METAL IN THE TAIL ROTOR GEARBOX THE UNIT WAS REPLACED.SDR QMLA2014091014108Shaft · damagedUPON REMOVAL OF TAIL ROTOR SHAFT FROM GEAR BOX, FOUND METAL PARTICLES INSIDE CASING & EXCESSIVE WEAR ON END SHAFT SPLINES. EROSION IS APPROX .090 FORM END INWARD & .030 DEEP.SDR QMLA2014090414105Gearbox · crackedPILOT REPORTED OIL RESIDUE ON TAIL ROTOR GEARBOX & SCRATCH ON LEADING SIDE NEAR LT BOLT AFTER FLIGHT. MECHANIC INSPECTED & FOUND CRACK AFT OF LT AFT BOLT & TAIL ROTOR GEARBOX 1/4 QT LOW ON OIL.SDR QMLA2014082514103Gearbox · failedPILOT REPORTED HEARING GRINDING NOISE COMING FROM FENESTRON AREA AT GND IDLE WHILE HOT FUELING THE ACFT. DETERMINED TAIL ROTOR GEARBOX INPUT PINION WAS CAUSE OF NOISE. LARGE AMOUNT OF PLAY & HEAT AT INPUT SHAFT AREA OF GEARBOX.SDR QMLA2014073114096Gearbox · making metalDURING MAINTENANCE FLIGHT HAD T/R CHIP LIGHT ILLUMINATE CAUSING A UNSCHEDULED LANDING. REMOVED & EXAMINED MAGNETIC CHIP PLUG. SMALL HAIR LIKE METAL SLIVER FOUND. CLEANED & RE-INSTALLED PLUG & STILL HAD CAUTION LIGHT. CHECKED WIRING & FOUND TO BE SERVICEABLSDR QMLA2014050114046Chip Detector · contaminatedDURING TAKEOFF THE TAIL ROTOR CHIP LIGHT ILLUMINATED. ABORTED THE FLIGHT & RETURNED TO THE BASE. CLEANED & REINSTALLED THE TAIL ROTOR GEARBOX CHIP DETECTOR & RETURNED THE ACFT TO SERVICE. THIS ACFT HAS LOGGED APPROXIMATELY 9 FLIGHT HOURS SINCE THIS EVENT WISDR CA140423011Bolt · unserviceable(CAN) T/R GEARBOX OIL WAS DARK AND EVIDENCE OF BLACK PASTE AND METAL ON CHIP PLUG. IT WAS DECIDED TO R & R T/R GEARBOX AND IN THE PROCESS OF DOING SO IT WAS DISCOVERED THAT THE COUPLING BOLT ATTACHING THE T/R DRIVESHAFT COUPLING TO THE T/R GEARBOX INPUT GEAR SSDR CA140319006Control Lever · malfunctioned(CAN) DURING ALF, AFTER LAST FLIGHT, CHECK, THE TAIL ROTOR CONTROL PITCH LEVER LOWER BUSHING WAS FOUND LOOSE. THIS WAS NOTICED BY EXCESSIVE TWISTING/ROCKING MOVEMENT IN LEVER AROUND THE EXPANSION PIN THAT MOUNTS IT TO THE TAIL ROTOR GEARBOX. LEVER WAS REMOVESDR CA140110004Gearbox · leaking(CAN) DURING THE ALF CHECK, IT WAS NOTICED THAT THE OIL LEVEL IN T/R GEAR BOX WAS TOO LOW, AND THE FIN WAS COVERED IN OIL. THE INPUT MAG SEAL WAS REPLACED AT 3105.4 HRS. THE ACFT FLEW FOR 3.4 HRS AND NO DEFECT WAS REPORTED. THE DAY AFTER THE ACFT FLEW FOR 1.SDR QMLA2013122113178Gearbox · making metalON 12/18/2013 WE WERE PERFORMING INSPECTIONS. DURING AAIP INSPECTION AIRFRAME ZONE 12 OF TAIL ROTOR GEARBOX, BK117AMM CHAPTER 32-32 STEP 3, FOUND THE TAIL ROTOR CHIP DETECTOR HAD INSIGNIFICANT DEBRIS, BUT NO BIG CHIPS ON IT. IAW THE BK117 AMM INSPECTED THE ISDR 39LA2013121228Bearing · damagedDURING LANDING CREW FELT VIBRATION & ON SHORT FINAL MASTER CAUTION LIGHT ILLUMINATED WITH CORRESPONDING INTERMEDIATE GEARBOX CHIP DETECTOR LIGHT. REMOVED INTERMEDIATE GEARBOX PN S6135-66300-002, SN A15-887 & INSTALLED PN S6135-66300-2, SN A15-1045 IAW S-61 MMSDR QMLA2013110913162Gearbox · making metalTAILROTOR CHIP LIGHT CAME ON IN FLIGHT SOON AFTER TAKEOFF. PILOT USED FUZZ BURNER BUT LIGHT STAYED ON. ACFT RETURNED TO AIRPORT. FOUND CHIPS CONSISTENT WITH FIGURE F IN AMM 65-21-00, 6-1.SDR CA131025001Gearbox · making metal(CAN) DURING GROUND RUN, PILOT REPORTED T/R CHIP LIGHT. T/R GEARBOX OIL DRAINED AND CHIP DETECTOR INSPECTED. FOUND LARGE QTY OF FERROUS METAL FLAKES ON DETECTOR. T/R GEARBOX REMOVED FROM SERVICE AND SENT TO MFG FOR REPAIR.SDR CA130930009Swashplate · damaged(CAN) DURING REMOVAL OF RENTAL TAIL ROTOR GEARBOX, IT WAS DISCOVERED THAT 1 OF THE DRIVE SPLINES FOR THE TAIL ROTOR SWASHPLATE WAS MISSING. THE RENTAL GEARBOX HAD BEEN INSTALLED FOR 40 HOURS AND WHEN IT WAS INSTALLED THE TAIL ROTOR SWASHPLATE HAD NO SIGNS OF SDR CA130925004Gearbox · making metal(CAN) TAIL ROTOR GEARBOX CHIP LIGHT ILLUMINATED, THE PILOT RETURNED TO STAGING. MAINTENANCE INSPECTED THE CHIP PLUG AND DISCOVERED A SMALL NR OF CHIPS, CLEANED, REINSTALLED AND FLYING RESUMED. CHIP LIGHT RETURNED THE NEXT DAY AND THE TAIL ROTOR GEARBOX WAS CHASDR QMLA2013090413126Stud · brokenSTUD HAD SHEARED OFF OF THE TAIL ROTOR GEARBOX MOUNTING FLANGE AT ONE O`CLOCK POSITION. NOTICED POSITIONS THREE, FIVE AND ELEVEN O`CLOCK STUDS WERE LOOSE AS WELL. REMOVED TAIL ROTOR GEARBOX FROM THE ACFT.SDR QMLA2013082313124Gearbox · making metalPILOT REPORTED GEARBOX CHIP LIGHT ON APPROACH. AFTER LANDING, REMOVED AND INSPECTED CHIP DETECTOR AND FOUND CHIP DETECTOR COVERED WITH SMALL CHIPS. AFTER LOOKING IN THE MM FOR LIMITS, FOUND THE AMOUNT OF CHIPS EXCEEDED LIMITS. GEARBOX WAS REMOVED FROM SERVICE.SDR 2013FA0000419Chip Detector · fracturedDURING 500 HOUR TAIL ROTOR GEARBOX FLUSH PRODEDURE, FOUND PLASTIC FALLING OUT OF CHIP DETECTOR/DRAIN WHEN REMOVED FROM GEARBOX. THIS PROBLEM CAUSES CHIP DETECTOR TO MAKE AN ELECTRICAL SHORT AND MAY SEEP OIL, BECOMES UNUSABLE.SDR 3GMA20130706006Gearbox · chippedTAIL ROTOR CHIP LIGHT IN FLIGHT. MADE A PRECAUTIONARY LANDING IN BASEBALL FIELD. ENROUTE TO MEDICAL SCENE CALL AND HAD TO ABORT.SDR QMLA2013060913080Gearbox · making metalTAIL ROTOR GEARBOX CHIP LIGHT, NON TAKEOFF FOR SCENE FLIGHT, LANDED AT AIRPORT AFTER TRGB CHIP LIGHT CAME ON. FOUND LARGE SHAVINGS ON CHIP DETECTOR. REPLACED TRGB.SDR CA130610013Seal · failed(CAN) NEW SEAL INSTALLED IN ACFT. TAIL ROTOR GEAR BOX DURING O/H. SEAL FAILED AFTER 120.2 HRS IN SERVICE. SEAL REPLACED WITH NEW AND RETURNED TO SERVICE.SDR CA130605007Gearbox · cracked(CAN) FEW DAYS BACK, PILOT ACFT REPORTED UNUSUAL VIBRATION AND FEEDBACK FROM THE PEDALS. DURING INSPECTION, WE FOUND CRACKS ON TAILBOOM ASSY AND TAIL ROTOR GEARBOX.SDR CA130508012Seal · leaking(CAN) DURING THE REPLACEMENT OF THE IGB, INTERMEDIATE GEARBOX, SEAL, DUE TO LEAKAGE, THE LIP SPRING WAS FOUND ON THE INPUT SHAFT, INSIDE THE IGB, INSTEAD OF SITTING ON THE SEAL`S LIP ITSELF. NEW SEAL WAS INSTALLED AND INPUT SHAFT REMOVED AND REINSTALLED A FESDR CA130515010Gearbox · seized(CAN) AFTER THE INSTALLATION OF TAIL ROTOR GEARBOX AND TAIL ROTOR HUB AND BLADE ASSEMBLY AT GROUND RUN LASTING 5 MINUTES WAS BEING PERFORMED TO LEAK CHECK AND BALANCE TAIL ROTOR. APPROXIMATELY 10 SECONDS AFTER PILOT ROLLED THROTTLE BACK TO IDLE A LOUD NOISE WSDR CA130424009Magnetic Seal · leaking(CAN) WHEN ACFT LANDED AT OUR BASE FOR MAINTENANCE, IT WAS NOTICED THAT THE TGB INPUT SEAL WAS LEAKING OIL.SDR CA130405009Swashplate · cracked(CAN) T/R SWASHPLATE REMOVED FROM ACFT FOR ROUTINE MAINTENANCE. DURING INSPECTION, NUMEROUS ROTATING SWASHPLATE DRIVE SPLINES WERE FOUND TO BE CRACKED AND SOME WERE BROKEN AWAY.SDR CA130227001Magnetic Seal · leaking(CAN) T/R GEARBOX MAGNETIC SEAL LEAKS.SDR QMLA2013021313026Gearbox · making metalTAIL ROTOR GEARBOX CHIP LIGHT OCCURED DURING ENGINE SHUTDOWN. A VISUAL INSPECTION FOUND A CHIP OUT OF LIMITS. REMOVED FAILED GEARBOX. GEARBOX AND SHAFT ASSY, ASSEMBLED AND INSTALLED ON ACFT, PERFORMED VIBRATION & BALANCE CHECK AND RETURNED ACFT TO SERVICE.SDR QMLA2013020413022Flex Coupling · brokenDURING INSPECTION OF ACFT AFTER REMOVAL OF TAILROTOR AFT DRIVE SHAFT FOUND FLEX COUPLING BROKEN STRAPS AND GROOVE MARKS IN TAILROTOR GEARBOX HSG. NO DAMAGE ALLOWED IAW AEC INSTRUCTIONS. REMOVED FOR REPAIR.SDR QMLA2013012913020Gearbox · making metalDURRING "GROUND RUN," THE INTERMEDIATE GEAR BOX CAUSED THE TAILROTOR GEARBOX ANNUNCIATOR LIGHT TO ILLUMINATE. CHIP PLUG WAS EXAMINED. OEN CHIP FOUND, CLASIFIED AS "D." THE GEARBOX WAS REPLACED WITHOUT INCIDENT.SDR QMLA2013012613011Gearbox · making metalAFTER TAKEOFF FROM BASE PAD, TAIL ROTOR CHIP LIGHT CAME ON, PILOT RETURNED TO BASE, ATTEMPTED TO BURN CHIP AND LIGHT REMAINED ON. PILOT CALLED THE MECHANIC. MECHANIC INSPECTED TAIL ROTOR GEAR BOX AND INTERMEDIATE GEAR BOX. FUZZ WAS FOUND ON THE INTERMEDIATESDR ALGA201210116701Housing · corrodedTAIL ROTOR GEARBOX HOUSING HAS CORROSION.SDR CA121002007Seal · cracked(CAN) INVESTIGATED TGB INPUT SEAL LEAK BY REMOVING SEAL. FOUND CRACK ON RACE OF MAIN PART OF SEAL, NOT CARBON SURFACE.
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