JASC 6720
Service difficulty reports · 852
Reports filed under 6720 · Tail Rotor Control System, 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 = '6720' 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 = '6720' 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 CA130910004Bearing · worn(CAN) PILOT REPORTED HEARING A WHISTLE/WHINE COMING FROM THE TAIL ROTOR ON SHUTDOWN. UPON INSPECTION IT WAS FOUND THAT THE C031-1 T/R PITCH CHANGE BEARING HAD BLACK SMOKE COMING FROM AROUND THE BEARING CLOSEST TO THE T/R GEARBOX. WHEN REMOVED BEARINGS WERE RSDR CA130618008Control Tube · cracked(CAN) DURING A ROUTINE ANNUAL INSPECTION, WHILE INSPECTING THE TAIL ROTOR FLIGHT CONTROLS IN THE BELLY OF THE ACFT, SOME CHAFING WAS NOTED ON CONTROL TUBE, PN 430-001-007-101 AT THE SECOND BULKHEAD AFT OF THE CONNECTING FORWARD CLEVIS AND BULKHEAD. UPON DISASSSDR CHIR201306060002Bolt · wornDURING OPPORTUNITY INSPECTION, MX CREW NOTICED EXCESSIVE STEP WEAR ON AFT ROTOR PITCH CHANGE LINK (GREEN POSITION) UPPER BOLT. PITCH CHANGE LINK BOLT WAS SUBSEQUENTLY REPLACED.SDR 2A6R201305063241Control Cable · chafedAFTER DUAL FLIGHT CONTROL INSTALLATION PERFORMED FUNCTIONAL CHECK OF TAIL ROTOR CONTROLS FOR SMOOTHNESS OF OPERATION. NOTICED SOME BINDING WITH A SCRAPING SOUND. INVESTIGATED AND DETERMINED FORWARD BALL TYPE CONTROL CABLE WAS CHAFING AT FORWARD END WHERE RODSDR 2013FA0000267Control System · restrictedPILOT COMPLAINED ABOUT LOSS OF TAIL ROTOR CONTROL ON LANDING. CHECKED PITCH CONTROL MECHANISM, RIGGING OF CONTROL RODS AND FOUND NORMAL. USING T/R PITCH RIGGING TOOLS FOUND FULL LT PEDAL DEFLECTION LACKING 4-5 DEGREES FULL TRAVEL. SIDE PANEL CARPET SEEMED TSDR STRA20130417101Control Rod · faultyON DAILY INSPECTION FOR COMPLIANCE OF DAILY AD 2004-16-08 FOR THE NOTAR FAN CONTROL ROD, IT WAS FOUND THAT SAFETY LANDYARDS ON THE FORCE LIMITING ASSY WERE TIGHT. UPON FURTHER INVESTIGATION FOUND THAT LANDYARDS WERE TIGHT WHEN MOVING LEFT AND RIGHT PEDALS FULSDR CA130325016Control Tube · broken(CAN) PILOT LOST THE TAIL ROTOR CONTROL DURING FLIGHT. ROD END BROKEN.SDR QMLA2012080312126Pitch Rod · leakingTEFLON MATERIAL VISIBLE AND COMING OUT AROUND TOP AND BOTTOM CIRCUMFERENCE OF SPHERICAL BEARING OF TAIL ROTOR PITCH CHANGE LINK. DEFECT FOUND DURING ROUTINE AIRWORTHINESS CHECK. MANDATORY REPLACEMENT OF TAIL ROTOR PITCH CHANGE LINK BEFORE FURTHER FLIGHT IAW SDR ALGA2012050701O-Ring · leakingPERFORM FUNCTIONAL CHECK, FOUND O-RING ON DIFFERENTIAL VALVE FAILED, CAUSING INTERNAL FLUID BYPASS. REPLACED O-RING.SDR CA120413007Control Cable · worn(CAN) PILOT REPORTED "TAIL ROTOR PEDALS FEEL STIFF" -TAIL ROTOR CONTROL FLEXIBLE CONTROL CABLE FOUND WORN ON FORWARD END DUE TO MOVABLE PORTION OF CABLE CHAFING ON FIXED PORTION OF CABLE.SDR KBTR20121213001Tube · tornDURING ROUTINE INSPECTION OF TAILBOOM, DISCOVERED TORN WEAR SLEEVES ON TAIL ROTOR CONTROL TUBE. THE TAIL ROTOR CONTROL TUBE WAS INSTALLED NEW 13.0 PRECEDING THIS DISCOVERY. WEAR SLEEVES ARE PART OF THE CONTROL TUBE ASSY. THE TEARING WAS A RESULT OF CONTACT WISDR QMLDMG2302Control Cable · crackedWHILE PERFORMING AN INSPECTION FOUND THE TAIL ROTOR CONTROL BALL FLEX CABLE SHEATH CRACKED COMPLETLY AROUND THE CABLE. R & R CABLE ASSEMBLY.SDR QMLA2011032111035Control Cable · galledTHE PILOT REPORTED THAT THERE WAS A GRINDING NOISE WHEN THE TAIL ROTOR PEDALS WERE MOVED WHILE THE ACFT WAS IN A STATIC CONDITION (ENGINES NOT RUNNING). THE MECHANIC INSPECTED THE ACFT AND FOUND THAT THE CONTROL CABLE WAS GALLED AND WORN ON THE FWD END. THESDR CA100929004Control Lever · unserviceableTAIL ROTOR CONTROL LEVERS, PN 350A33-1058-03 WAS TO BE MODIFIED IAW ASB 05.00.62 AND AD 2010-0082-E. PARTS RETURN FROM VENDOR WHO WAS TASKED TO CARRY OUT MODIFICATION. 1 OF OUR T/R GEAR BOX WITH A MODIFIED CONTROL LEVER WAS SENT TO MFG FOR O/H AND NOTED THATSDR 2010FA0001137Housing · cracked(QH5R) SERVO BODY CRACKED.SDR CA100622020Yoke · mismanufacturedTAIL ROTOR YOKE PN 406-012-102-109, SN HBFS821, HAS BEEN MFG INCORRECTLY. THE AREA WHERE THE FLAPPING STOP CONTACTS THE YOKE SHOULD BE MACHINED FLAT. THE YOKE IN QUESTION HAS TOO MUCH MATERIAL REMOVED, CAUSING A RIDGE TO BE FORMED AND RESULTS IN THE FLAPPINGSDR CA090511012Bearing · damaged(CAN) INNER BEARING ON TAIL ROTOR PITCH CHANGE MECHANISM, INNER RACE IS SPINNING ON THE SHAFT CAUSING BEARING ASSY TO WEAR INTO THE SHOULDER ON THE PITCH CHANGE ASSY. THE RESULT WAS THE BEARING ASSY WAS MIGRATING INBD ON THE PITCH CHANGE ASSY.SDR ULXR2009050581806Sleeve · wornSLEEVE INTERNAL BORE WORN BEYOND LIMITS.SDR ULXR2009042481807Bearing · wornLAG DAMPER ROD END BEARING HAS PLAY .017.SDR CA090506007Tube · failed(CAN) RECEIVED TAIL ROTOR GEARBOX FOR A 60 MONTH INSP WITH PITCH CHANGE MECHANISM ATTACHED. WHEN PITCH MECHANISM WAS REMOVED, NOTICED A RAISED SLIVER OF MATERIAL THE ENTIRE DIAMETER OF THE PITCH TUBE IN THE AREA OF THE BRG SLEEVE AND PITCH TUBE BRG SHOULDER. TSDR CA090213007Pedal · cracked(CAN) WHILE CARRYING OUT A T-INSPECTION THE RT PEDAL PILOT`S SIDE WAS FOUND TO BE CRACKED. THE LOCATION OF THE CRACK IS AFT SIDE OF PEDAL OR PILOT`S FOOT SIDE IN THE CORNER OF THE RT ANGLE BEND OF PEDAL.SDR CA081020004Bracket · cracked(CAN) A US OPERATOR HAS REPORTED 7 CASES OF THE RT TAIL ROTOR BELLCRANK MOUNTING BRACKET CRACKING. ALL THESE ACFT HAVE LIMITED LT PILOT MODIFICATION STC SH96-32 (FAA STC SR00429NY). LIMITED HAS ISSUED A SB ECL-122 REQUIRING AN INSP BEFORE NEXT FLIGHT REPEATESDR HXS2008F00008Bracket · crackedON THE BOTTOM SIDE OF THE FOOT PEDAL CONTROLS, ON THE RT PILOT SIDE, THE BRACKET THAT IS PART OF THE BELLCRANK ASSY, BRACKET PN 350A21-13636-24, HAS A CRACK IN IT. REMOVED BRACKET AND REPLACED WITH A SERVICEABLE BRACKET AND RETURNED AC TO SERVICE. THIS AC HAS SDR HXS2008F00007Bracket · crackedON THE BOTTOM SIDE OF THE FOOT PEDAL CONTROLS, ON THE RT PILOT SIDE, THE BRACKET THAT IS PART OF THE BELLCRANK ASSY, BRACKET PN 350A21-13636-24, HAS A CRACK IN IT. REMOVED BRACKET AND REPLACED WITH A SERVICEABLE BRACKET AND RETURNED AC TO SERVICE. THIS AC HAS SDR HXS2008F00006Bracket · crackedON THE BOTTOM SIDE OF THE FOOT PEDAL CONTROLS, ON THE RT PILOT SIDE, THE BRACKET THAT IS PART OF THE BELLCRANK ASSY, BRACKET PN 350A21-13636-24, HAS A CRACK IN IT. REMOVED BRACKET AND REPLACED WITH A SERVICEABLE BRACKET AND RETURNED AC TO SERVICE. THIS AC HAS SDR HXS2008F00005Bracket · crackedON THE BOTTOM SIDE OF THE FOOT PEDAL CONTROLS, ON THE RT PILOT SIDE, THE BRACKET THAT IS PART OF THE BELLCRANK ASSY, BRACKET PN 350A21-1363-24, HAS A CRACK IN IT. REMOVED BRACKET AND REPLACED WITH A SERVICEABLE BRACKET AND RETURNED AC TO SERVICE. THIS AC HAS BSDR HXS2008F00004Bracket · crackedON THE BOTTOM SIDE OF THE FOOT PEDAL CONTROLS, ON THE RT PILOT SIDE, THE BRACKET THAT IS PART OF THE BELLCRANK ASSY, BRACKET PN 350A21-1363-24, HAS A CRACK IN IT. REMOVED BRACKET AND REPLACED WITH A SERVICEABLE BRACKET AND RETURNED AC TO SERVICE. THIS AC HAS SDR HXS2008F00002Bracket · crackedON THE BOTTOM SIDE OF THE FOOT PEDAL CONTROLS, ON THE RT PILOT SIDE, THE BRACKET THAT IS PART OF THE BELLCRANK ASSY, BRACKET PN 350A21-1313-24, HAS A CRACK IN IT. REMOVED BRACKET AND REPLACED WITH A SERVICEABLE BRACKET AND RETURNED AC TO SERVICE. THIS AC HAS BSDR CA080929005Pitch Link · separated(CAN) THE PITCH CHANGE ROD END BEARING BALL WAS FOUND SEPARATED FROM THE PITCH LINK. THE PILOT REPORTED THAT THE TAIL ROTOR FELT DIFFERENT UPON LANDING. IT WAS FOUND BY THE PILOT WHEN DOING A POST FLIGHT INSPECTION. AN AME WAS DISPATCHED TO ATTEND THE PROBLSDR CA080702012Tube · chafed(CAN) INSP OF THE TAIL ROTOR CONTROL TUBE IAW CAMPAIGN NOTICE 351-67-10-017, A 7X7MM AREA WAS FOUND TO HAVE BEEN CHAFED TO A DEPTH OF .003 INCHES 15MM FWD OF THE PROTECTIVE SLEEVE INSTALLED ON THE CONTROL ROD IN THE 10 O`CLOCK POSITION LOOKING FWD FROM THE AFTSDR M7K2008F00040Potentiometer · failedUPON SHUTDOWN A FAULT CODE WAS GENERATED THAT INDICATED A FAULT WITH COLLECTIVE POTENTIOMETER. A NEW POTENTIOMETER WAS INSTALLED AND NO FURTHER DEFECT NOTED. THIS HAS BEEN A VERY COMMON FAULT FOR THIS PART. RECENTLY IT WAS DETERMINED THAT ELECTRICAL HARNESS SDR 2008FA0000440Rod · chafedDURING AN INSPECTION OF THE TAIL ROTOR PITCH CONTROL TUBE SLEEVES, WE DISCOVERED THAT BELLCRANK PN 206001763001 HAD BEEN CHAFED INTO BY THE RIVET SECURING THE ROD END OF ROD ASSEMBLY PN 206011725001. THIS WEAR OCCURS WHEN LEVER ASSEMBLY PN 206011722105 PIVOT DSDR M7K2008F00030Potentiometer · failedA FAULT CODE WAS GENERATED ON SHUTDOWN INDICATING A DEFECT OF COLLECTIVE POTENTIOMETER. A NEW PART WAS INSTALLED, NO FURTHER FAULT WAS DETECTED. THIS IS RECURRING FAILURE FOR THIS PART WHICH HAS EFFECTED DISPATCH RELIABILITY FOR THIS MODEL HELICOPTER. SUGGESDR M7K2008F00029Potentiometer · failedA FAULT CODE WAS GENERATED ON SHUTDOWN INDICATING A DEFECT OF COLLECTIVE POTENTIOMETER. A NEW PART WAS INSTALLED, NO FURTHER FAULT WAS DETECTED. THIS IS RECURRING FAILURE FOR THIS PART WHICH HAS EFFECTED DISPATCH RELIABILITY FOR THIS MODEL HELICOPTER. SUGGESDR 04222008Support Bracket · looseDURING SCHEDULED INSPECTION, A TAIL ROTOR CONTROL TUBE SUPPORT MOUNT WAS FOUND LOOSE INSIDE THE TAILCONE DUE TO WORKING RIVETS.SDR HEER119378Pivot · frozenBALL PIVOT FAILED INSPECTION OF ASB EC135-67A-017 REV. 2. FROZEN UNABLE TO MOVE PIVOT POINT. REPLACED WITH SERVICEABLE PART.SDR CA080103007Bolt · broken(CAN) ON INSPECTION OF THE AIRCRAFT IT WAS NOTED THAT THE (1) OF THE (3) BOLTS WAS BROKEN AND THE OTHERS SHOWED SIGNS OF CORROSION ALL (3) BOLTS WHERE REPLACED WITH NEW. (TC NR 20080103007)SDR CA071203005Pitch Link · mismarked(CAN) TAIL ROTOR PITCH LINKS P/N 117.31822A. REPLACED ON 31 OCT/2007, DUE TO BEARING WEAR. ON DEC 3/2007 THE LINKS WERE INSPECTED PRIOR TO BEARING REPLACEMENT AND WERE FOUND TO HAVE AN INCORRECT P/N STAMPED ON THEM. THE NR WAS MISSING THE NR 1. THE STAMP INDISDR 20073Attach Bracket · crackedTAIL ROTOR PEDALS JAMMED DURING FLARE TO A HOVER. AIRCRAFT LANDED WITHOUT INCIDENT. UPON INSPECTION IT WAS FOUND THAT THE TAIL ROTOR PEDAL BLOCK SUPPORT BRACKET ON THE RT SIDE HAD CRACKED AT THE AFT PEDAL BLOCK ATTACH POINT ALLOWING THE PEDAL BLOCK TO PIVOT DOSDR BAQA200700035Clevis · wornWEAR DETECTED ON THE YAW ACTUATOR OF THE TAIL ROTOR IN THE CARDAN JOINT (CLEVIS) BUSHING BORE WHERE THE BOLT ATTACHES TO THE LOWER MOUNT SUPPORT. BORE WAS WORN TO AN EGG SHAPE. THE SUBJECT OF THIS PROBLEM IS ADDRESSED IN MFG ALERT SERVICE BULLETIN ASB-MBB-BK1SDR 2007FA0000829Control System · roughDURING 100 HR INSPECTION, PLAY WAS NOTICED BETWEEN THE ROTATING AND NOT-ROTATING SWASH PLATES OF THE TAIL ROTOR PITCH CONTROL AFTER REMOVAL, IT WAS NOTED THAT THE BEARING WAS DRY AND ROUGH. RECORDS INDICATE IT WAS REGREASED IN DEC OF 2006. (K)SDR 7237080807Tail Rotor · malfunctionedWHILE LANDING AT A HOSPITAL PAD THE AIRCRAFT NOSE TUCKED LT AND BEGAN A UNCOMMANDED RT ROTATION. POWER WAS APPLIED TO CRUISE TORQUE 60 PERCENT AND WAS FLOWN INTO THE RT ROTATION AND BACK TO CRUISE FLIGHT. APPROACH TO HOSPITAL WAS TERMINATED AND DECIDED TO FLYSDR 0703070144Actuator · leakingLEAKING FLUID FROM WEEP HOLE.SDR 070207Actuator · wrong partAIRCRAFT REQUIRED EXCESSIVE LT PEDAL IN A HOVER. CHANGED TAIL ROTOR SERVO. NOTE: UNDER MODEL THERE IS NOT THE OPTION FOR EC-135 T2 AND FOR THE ENGINE THERE IS NO OPTION FOR ARRIEL 2B2. UNDER MANUFACTURE NAME FOR THE PART THERE IS NOT A LISTING FOR THE COMPANY.SDR 0627070144Actuator · leakingLEAKING FLUID FROM HOUSING BEYOND SERVICEABLE LIMITS.SDR CA070625005Push-Pull Rod · chafed(CAN) HEAT SHRINK WHICH PROTECTS THE TAIL ROTOR PUSH PULL TUBE AS IT GOES THRU BEARING P/N 359A27-1191-20 IS CHAFING PREMATURLY AT THE AFT MOST BEARING LOCATION ON THE TAILBOOM. IPC 67.20.10.00006.00 FIG. 3 (TC# NR 20070625005)SDR 0613070144Bearing · wornSPHERICAL BEARING ON INPUT SHAFT, WORN.SDR 0621070132Bearing · wornSPHERICAL BEARING WORN ON INPUT SHAFT.SDR 0524070157Bearing · wornSPHERICAL BEARING WORN AND LEAKING FLUID.SDR PHA2007F00000Support · crackedAFTER A REFUELING STOP ON A PART 91 FLIGHT, THE PILOT PLACED HIS FEET ON THE TAIL ROTOR PEDALS AND FELT THEM MOVE. HIS INSPECTION REVEALED THAT 3 OF THE 4 MOUNT LOCATIONS FOR THE LT TAIL ROTOR PEDAL SUPPORT WERE BROKEN OFF OF THE SUPPORT. THE UPPER LT, LOWER
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