JASC 6730

Service difficulty reports · 647

Reports filed under 6730 · Rotorcraft Servo 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 = '6730'
  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.

SDR 454A260420151853Spring · overtorquedDURING CLIMBOUT, LOUD BRIEF BUZZING NOISE HEARD. CREW STARTED SMELLING A CHARRING SMELL. CHARRING SMELL INCREASED WHILE ON THE GROUND. MAINTENANCE CREW TROUBLESHOT. EXTERNAL HYDRO POWER WAS APPLIED TO ATTEMPT TO IDENTIFY THE SERVO. COULD NOT REPLICATE THE CHARApr 20, 2026 · N369PA · Bell 407SDR PN1R202602200002Servo Control · leakingDURING INSPECTION FOUND RIGHT HAND MAIN ROTOR SERVO HAS STATIC LEAK. REPLACED SERVO.Feb 20, 2026 · N568AE · Snias AS350B3SDR QR9R2023032200001Actuator · illuminatedDURING FLIGHT THE ACTUATOR MASTER CAUTION ILLUMINATED. AIRCRAFT STARTED TO EXPERIENCE HEADING/TRIM ANOMALIES. FLIGHT CONTROLS ALSO BECAME INCREASINGLY SLUGGISH. DURING TEST FLIGHT EVAL, 35 MINUTES INTO FLIGHT, ACTUATOR ILLUMINATED ON CAD. PFD DISPLAYED A YAW AMar 22, 2023 · Bolkms BK117C2SDR QR9R20220311001Actuator · failedAIRCRAFT FAILED AP TEST. TF MOC FOUND AP TEST FAILED WITH "Y" CAUT ON PFD AND AP1 / AP2 TRIM CAUTIONS ON CAD. HYD TEST PERFORMED DURING RUNUP FOUND PEDALS TO BE TIGHT WHEN TESTING SYSTEM #2. TAIL ROTOR ACTUATOR FAILED CONTROL FORCES TEST WITH A MEAN MEASUREMENMar 11, 2022 · Bolkms BK117C2SDR AC2A202110029201Servo · unserviceableTAIL ROTOR SERVO CONTROL LINKAGE INTERCONNECT LINK BEARINGS WORN TO LIMITSOct 2, 2021 · N292MH · Skrsky S92ASDR QR9R20210921001Actuator · out of toleranceT/R ACTUATOR INPUT LEVER BEARING WORN PAST TOLERANCE OF .6 MM. MEASURES .762 MM RADIAL PLAY. MAINTENANCE REPLACED T/R ACTUATOR IAW AMM 67-34-00, 4-1. OPS CHECK COMPLETED OK IAW 05-60-00, 6-1. *NOT FOUND IN AIRCRAFT INQUIRYSep 21, 2021 · Bolkms BK117C2SDR AC2A202109299201Control Servo · unserviceableTAIL ROTOR SERVO CONTROL LINKAGE BEARINGS WORN TO LIMITSSep 20, 2021 · N927SC · Skrsky S92ASDR CA190705005Servo · abnormal(CAN) DURING THE DAILY INSPECTION AFTER THE LAST FLIGHT OF THE DAY , THE FORWARD MAIN ROTOR SERVO INPUT ROD WAS FOUND WITH ABNORMAL MOVEMENT. THE SERVO WAS OVERHAULED 637.6 HOURS PRIOR TO THIS EVENT. THE AIRCRAFT IS GROUNDED AND THE SERVO REMOVED FROM THE AIJul 3, 2019 · Urocop EC130B4SDR CA190603014Servo · leaking(CAN) HYRAULIC SERVO STARTED LEAKING BEYOND LIMITS AND WAS REMOVED FOR REPAIR AND REPLACED WITH OVERHAULED UNIT. NOR FURTHER ACTION REQUIRED. (TC# 20190603014)May 30, 2019 · Snias AS350B3SDR CA190524013Servo · damaged(CAN) ON TWO SEPARATE OCCASIONS WE HAVE RECEIVED A HYDRAULIC COMPONENT WITH ALUMINUM SHIPPING CAPS THAT HAVE A RUBBER SEAL INSIDE WHICH BECOMES DISLODGED ON CAP REMOVAL AND THE RUBBER SEAL STAYS INSIDE THE PORT ON THE NEWLY INSTALLED COMPONENT. LUCKILY, IT HASMay 23, 2019 · Agusta AW139SDR YV3R2019012200088Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO ASSEMBLY P/N: D212-1 IS LEAKING.May 15, 2019 · Robsin R44RAVENIISDR YV3R2019012200087Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO ASSEMBLY P/N: D212-1 WAS LEAKING.May 15, 2019 · Robsin R44RAVENIISDR YV3R2019012200084Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO ASSEMBLY IS LEAKING.May 15, 2019 · Robsin R44RAVENIISDR AC2R2019060549206Servo · wornBEARINGS, LINKAGE AND SLINED PIVOT SHAFT WORN.May 12, 2019 · N292MH · Skrsky S92ASDR YV3R2019012200079Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO ASSEMBLY P/N: D212-1 IS LEAKING.May 6, 2019 · Robsin R44SDR AC2R2019050201Pressure Switch · leakingWHILE ENTERING A LEFT DOWNWIND FOR RWY 18 INTO KGAO ABOUT 3 MILES SOUTH OF THE AIRFIELD, THE HYDRAULIC UTIL PRESS CAS ILLUMINATED. WENT TO THE HYDRAULIC SYNOPTIC PAGE AND THE #2 HYDRAULIC RESERVOIR WAS INDICATING 50% HYDRAULIC FLUID. IMMEDIATELY LOWERED THE LAApr 30, 2019 · N639GG · Agusta AW139SDR HDNA201904290015Servo · damagedTHE AFT RIGHT HOLD DOWN BOLT FOR THE COLLECTIVE MAIN ROTOR SERVO ACTUATING ROD COLLAR, BOLT HEAD SEPARATED FROM BOLT SHAFT.Apr 29, 2019 · N135BU · Urocop EC135P1SDR YV3R2019012200071Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO P/N: D212-1 WAS LEAKING.Apr 18, 2019 · Robsin R44SDR YV3R2019012200069Servo · leakingCUSTOMER REPORTED HYDRAULIC SERVO P/N: D212-1 HAD AN OIL LEAK.Apr 17, 2019 · Robsin R44SDR AC2R2019060549203Servo · wornBEARINGS, LINKAGE AND SLINED PIVOT SHAFT WORN.Mar 9, 2019 · N921GL · Skrsky S92ASDR CA190220027Limit Switch · leaking(CAN) REPLACEMENT SERVO FOR SDR 20190220025 LEAKED AFTER 0.2 TEST FLIGHT. LIMIT SWITCH LEAKING HYDRAULIC FLUID AND ALSO LIMIT SWITCH LIGHT ILLUMINATION DIM ON 4 ALPHA PANEL IN COCKPIT. SUSPECT COLD OUTSIDE AIR TEMPERATURES - 35 C AS CAUSE OF PROBLEM. (TC# 2019Feb 10, 2019 · Snias AS350B3SDR CA190220025Limit Switch · leaking(CAN) REPLACEMENT SERVO FOR SDR REPORT 20190207017 LEAKED AFTER 1.5 HOURS OF FLIGHT. LIMIT SWITCH LEAKING HYDRAULIC FLUID. SUSPECT OPERATIONS IN COLD OUTSIDE AIR (- 35 C) TEMPERATURES CAUSING PROBLEM. (TC# 20190220025)Feb 9, 2019 · Snias AS350B3SDR YV3R2019021200021Servo · leakingCUSTOMER REPORTED OIL LEAK FROM SERVO.Feb 7, 2019 · N217DK · Robsin R44SDR YV3R2019021200020Servo · leakingCUSTOMER REPORTED OIL LEAK FROM SERVO.Feb 7, 2019 · N217DK · Robsin R44SDR YV3R2019021200019Servo · leakingCUSTOMER REPORTED OIL LEAK FROM SERVO.Feb 5, 2019 · N217DK · Robsin R44SDR AC2R2019060549208Servo · wornBEARINGS, LINKAGE AND SLINED PIVOT SHAFT WORN.Mar 1, 2018 · N392JS · Skrsky S92ASDR M3XA2018010401Servo · leakingPL FOR CYCLIC BACK PRESSURE CAUSING RESISTANCE TO PILOT INPUT. PATIENT WAS PICKED UP, ENROUTE, WHEN THE PILOT FELT HIS CYCLIC INPUT HAD REARWARD PRESSURE. PILOT MADE PL AT A HOSPITAL WITHOUT INCIDENT. UPON MECHANICS INSPECTION FOUND COLLECTIVE SERVO LEAKINGJan 4, 2018 · N253MT · Urocop EC135P2SDR HEER20171013748Servo · leakingTHR NR 2 MAIN ROTOR SERVO IS LEAKING AT UPPER PISTON. REPLACED THE NR 2 MAIN ROTOR SERVO ASSEMBLY.Oct 13, 2017 · N947PH · Skrsky S92ASDR AC2R2019060549207Servo · wornBEARINGS, LINKAGE AND SLINED PIVOT SHAFT WORN.May 2, 2017 · N392JS · Skrsky S92ASDR AC2R2019060549205Servo · wornBEARINGS, LINKAGE AND SLINED PIVOT SHAFT WORN.Jan 10, 2017 · N292MH · Skrsky S92ASDR HEER20160928327Bearing · burnedAFTER LOSS OF TAIL ROTOR AUTHORITY PRIOR TO LANDING, MAINTENANCE REMOVED T/R SERVO FOR REPLACEMENT, THE TAIL ROTOR PITCH CONTROL SHAFT AND BEARING WAS FOUND DAMAGED. THE BEARING WAS BURNT AND THE SEAL WAS FOUND INSIDE THE GEARBOX, THE SHAFT WAS DISCOLORED FROSep 28, 2016 · N923PH · Skrsky S92ASDR AC2R2019060549204Servo · wornBEARINGS, LINKAGE AND SLINED PIVOT SHAFT WORN.Sep 11, 2016 · N292MH · Skrsky S92ASDR AC2R2019060549202Servo · wornBEARINGS, LINKAGE AND SLINED PIVOT SHAFT WORN.Aug 12, 2016 · N921G · Skrsky S92ASDR 2016FA0000274Servo · failedM/R SERVO WARNING LIGHT ILLUMINATED ON CAUTION ADVISORY PANEL, AFTER TAKEOFF. PRECAUTIONARY LANDING WAS MADE AT NEARBY AIRPORT. RIGHT LATERAL SERVO WAS REPLACED. ACFT RETURNED TO SERVICE.Jun 2, 2016 · N866MB · Snias AS350B3SDR H4QA20160223001Servo · malfunctionedDURING FLIGHT THE PILOT REPORTED THAT HIS RT TAIL ROTOR PEDAL WOULD PRESS FWD BUT HIS LT PEDAL COULD ONLY TRAVEL TO NEUTRAL POSITION. TOWER WAS CONTACTED & A REQUEST TO PERFORM A STUCK PEDAL LANDING WAS MADE. THE ACFT LANDED SAFELY & THE ENSUING MX INVESTIGAFeb 22, 2016 · N718MD · Snias AS350B3SDR CA160217003Servo · leaking(CAN) THIS IS THE 4TH SERVO TO LEAK OUT OF THE LIMIT SWITCH AREA IN THE LAST 2 MONTHS WITH VERY LITTLE TIME SINCE REPAIR.Feb 12, 2016 · Snias AS350B3SDR CA160128006Limit Switch · leaking(CAN) FORWARD RT SERVO WITH LIMIT SWITCH. THE ACTUAL ACFT WAS A B3. 1ST SERVO HAD 72.6 HOURS SINCE O/H, FOUND OIL LEAKING OUT OF TOP, LIMIT SWITCH, AFTER MAINTENANCE FLIGHT. 2ND SERVO HAD 3.4 HRS SINCE REPAIR, FOUND OIL LEAKING OUT OF TOP, LIMIT SWITCH, AFTEJan 21, 2016 · Urocop EC130B4SDR 39LA20151206150Servo · leakingDURING CRUISE FLIGHT, THE FLIGHT CREW SMELLED AN ODOR. THE CREW CHIEF DISCOVERED A HYD LEAK, THE DECISION WAS MADE TO DIVERT. THE FLIGHT CONTINUED WITHOUT FURTHER INCIDENT. R & R AUXILIARY SERVO ASSEMBLY IAW S61N MM 65-44-0.Dec 6, 2015 · N261F · Skrsky S61NSDR CA151207008Servo · leaking(CAN) ON DAILY INSPECTION CREWS NOTICED OIL FORMING ON COWLING HINGE UPON REVIEW FOUND SERVO LEAKING FROM THE TOP CAP. ALL THE SERVO`S THAT WE HAVE THAT HAVE LEAKED, ALL LEAKED FROM TOP CAP AND WERE THIS PN SERVO.Dec 4, 2015 · Snias AS350B3SDR ZS4R20151012001Bolt · wornINPUT LEVER, STOP PIN AND BOLT ARE WORN EXCESSIVELY.Oct 12, 2015 · Skrsky S76BSDR HEER20150925719Servo · failedLEFT MAIN ROTOR SERVO BLEW OUT SERVO PISTON SEAL. THIS EMPTIED THE NR 2 HYRAULIC PUMP/RESERVOIR MODULE. CREW WAS NOTIFIED BY ILLUMINATION OF THE NR 2 TAIL ROTOR AND MAIN ROTOR SERVO AND HYDRAULIC PUMP AND LOW RESERVOIR LOW FAIL LIGHT. REPLACED UNSERVICEABLESep 25, 2015 · N933PH · Skrsky S92ASDR CA150603011Servo · failed(CAN) RIGHT MAIN SERVO PN 31026-110 TSO 0.0 RETURNED FROM OVERHAULED. SERVO INSTALLED ON AIRCRAFT & FAILED ELECTRICAL SERVO FUNCTION TEST. SERVO PN 31026-110 REMOVED UNENVIABLE TSO 0.0. SERVO RETURNED. DESCRIPTION OF DEFECT, SERVO LIMIT WARNING INDICATION Jun 3, 2015 · Aerosp AS355F2SDR AC2R2019060549201Servo · wornBEARINGS, LINKAGE AND SLINED PIVOT SHAFT WORN.May 17, 2015 · N921GL · Skrsky S92ASDR CA150224021O-Ring · leaking(CAN) DURING PERFORMANCE OF P-CHECK, DAILY INSPECTION/AFTER LAST FLIGHT, HYDRAULIC FLUID FOUND LEAKING AT LOAD SENSOR AREA, FROM UNDER CUP ASSY, PN 801540 OF RT MAIN ROTOR SERVO. SERVO MFG COMPONENT MM WITH ILLUSTRATED PARTS BREAKDOWN, 67-39-13, DOES NOT BREAFeb 2, 2015 · Urocop EC130B4SDR CA140819004Servo · malfunctioned(CAN) WHEN PILOT CARRIED OUT START UP CHECK LIST AT IDLE, A HYDRAULIC SYSTEMS CHECK WAS CARRIED OUT. SYSTEM 2 WAS CLOSED AND CONTROLS FUCTIONED PROPERLY. SYSTEM 2 WAS TURNED ON AND SYSTEM 1 WAS CLOSED. THE COLLECTIVE BEGAN TO RISE SLOWLY. THE TEST WAS CARRIAug 7, 2014 · Bell 205A1SDR I2WA201407180001Control Servo · leakingDURING CRUISE FLIGHT, THE HYDRAULIC LIGHT ILLUMINATED AND THE HORN CAME ON. THE PILOT SLOWED THE ACFT AIRSPEED AND TURNED THE HYDRAULICS OFF. HE THEN PROCEEDED TO MAKE A RUN ON LANDING AT A PRIVATE AIRPORT. MECHANIC DISCOVERED THERE WAS NO HYDRAULIC FLUID IJul 18, 2014 · N197BH · Snias AS350B2SDR CA140710007Control Rod · worn(CAN) DURING INSPECTION, THE ECS RETURN LINE HAD COME LOSE IN FLIGHT, AND STARTED TO WEAR A HOLE IN TO ONE OF THE MAIN ROTOR SERVO CONTROL RODS. THE ECS LINE IS A 2" ORANGE SCAT HOSE CONNECTED TO THE ECS SYS WITH A STANDARD CLAMP. THE CLAMP WAS INSPECTED ANDJul 9, 2014 · Agusta AW109SPSDR HCMA2014FA0000434Servo · excess playDURING A DAILY INSPECTION IT WAS NOTICED THAT THE LEFT HAND SERVO INPUT LEVER HAD LATERAL PLAY. UPON REMOVING THE COVER, IT APPEARS THAT THE SHIM UNDER THE BEARING ASSEMBLY WAS COMING OUT OF THE BORE.Jul 3, 2014 · N11QG · Urocop EC130B4SDR QMLA2014042914045Actuator · leakingTHE TAIL ROTOR ACTUATOR WAS FOUND SEEPING. THIS ACTUATOR WAS IN SERVICE FOR 146 HOURS, ABOUT THE AVERAGE TIME FOR REPLACEMENT EXPERIENCED AT THIS FACILITY WITH THIS ACFT. THE LEAKAGE RATE EXCEEDS THE LIMITS SPECIFIED IN THE MBB BK117C-2 AMM IAW CH 67-34-00, Apr 29, 2014 · N145HH · Bolkms BK117C2SDR 39LA2014041570Servo Control · corrodedMAIN ROTOR SERVO CYLINDER, PN 7112-3B, SN 494 HAS SEVERE INTERGRANULAR CORROSION ON THE LOWER ATTACH POINT.Apr 15, 2014 · N505R · Urocop AS365N3
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