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 CA140224020Servo · leaking(CAN) HYDRAULIC SERVO FOUND TO BE LEAKING FLUID FROM TOP SEAL. HYDRAULIC SERVO SN: 12384, TSO 1711, ALSO FOUND TO BE LEAKING FROM TOP SEAL. BOTH SERVOS REPLACED.Feb 19, 2014 · Robsin R44RAVENIISDR CA131121003Servo · frozen(CAN) DURING ENGINE START, THE PILOT IN COMMAND WAS UNABLE TO MOVE THE CYCLIC FORWARD. AFTER A VISUAL INSPECTION BY THE MAINTENANCE PERSONNEL, ICE BUILDUP WAS FOUND UNDER THE SERVO VALVE PROTECTION COVER. PRIOR TO THAT DAY, HEAVY RAIN WENT THROUGH THE AREA FNov 20, 2013 · Snias AS350B2SDR JYDR2013110801239Servo · wornDURING A SCHEDULED MAIN GEAR BOX CHANGE, THE LT LATERAL PRIMARY SERVO WAS FOUND TO HAVE A SEVERELY WORN BOLT AND BUSHING AT THE LOWER PIVIT FOLLOW UP ARM. SERVO WAS REMOVED FROM SERVICE AND RETURNED TO THE REPAIR STATION FOR INVESTIGATION. THE MFG IS PARTICIPNov 8, 2013 · N171AC · Skrsky S64FSDR JYDR2013110800239Servo · wornDURING A SCHEDULED MAIN GEAR BOX CHANGE, THE LT LATERAL PRIMARY SERVO WAS FOUND TO HAVE A SEVERELY WORN BOLT AND BUSHING AT THE LOWER PIVIT FOLLOW UP ARM. SERVO WAS REMOVED FROM SERVICE AND RETURNED TO THE REPAIR STATION FOR INVESTIGATION. THE MFG IS PARTISIPNov 8, 2013 · N171AC · Skrsky S64FSDR QMLA2013100613139Controller · bindingPILOT FELT RESISTANCE IN THE FORE AND AFT CYCLIC PITCH CONTROL ON APPROACH. TROUBLESHOOTING AND TALKING TO TECH REP, DETERMINED THAT THE PITCH MAIN ROTOR SERVO IS FAILING INTERNALLY. THIS SERVO CONTROL WAS R & R, WITH THE SUBSEQUENT OPERATIONAL GROUND AND FLOct 6, 2013 · N41299 · Snias AS350B2SDR CA130918007Servo · failed(CAN) AFTER INSTALLATION AND DURING A FREEDOM OF MOVEMENT CHECK IT WAS NOTED THAT THE RT LATERAL SERVO CONTROL INPUT LEVER LOCK WOULD POP OUT OF THE LOCKED POSITION. THIS COULD INTRODUCE A DANGEROUS INFLIGHT CONTROL CONDITION IN THE EVENT OF A HYDRAULIC FAILURSep 14, 2013 · Snias AS350B2SDR EOPA20130806637Servo · ratchetingCOLLECTIVE MOVEMENT WAS NOT SMOOTH. A RATCHETY FEELING IN THE COLLECTIVE LEVER. SERVO'S WERE SWAPPED TO THE CYCLIC CONTROLS. PROBLEM FOLLOWED THE SERVO.Aug 6, 2013 · N637AL · Bell 407SDR CA130423001Servo · stiff(CAN) DURING ENGINE START THE PILOT IN COMMAND & MECHANIC OBSERVE THE TAIL ROTOR LT PEDAL MOVING TO FULL DEFLECTION WITHOUT INPUT. THE PIC DID RESTRICTED THE UNCOMMANDED MOVEMENT OF THE LT PEDAL BY APPLYING FORCE. THE PIC DID MENTIONED TO THE MECHANIC THAT TApr 21, 2013 · Snias AS350B2SDR CA130318024Servo · contaminated(CAN) THE OPERATION HAD TO CONDUCT PILOT TRAINING WITH ACFT WHICH WAS PARKED OUTDOORS FOR THE LAST 4 DAYS. AFTER THE START WAS COMPLETED THE PILOT IN COMMAND FOUND THAT THE FORE AND AFT MOVEMENT OF THE CYCLIC SERVO WAS RESTRICTED IN THE FORWARD MOVEMENT. THMar 15, 2013 · Snias AS350BASDR CA130318022Servo · malfunctioned(CAN) THE OPERATION HAD TO CONDUCT PILOT TRAINING, WHICH WAS PARKED OUTDOOR FOR THE LAST 4 DAYS. AFTER THE START WAS COMPLETED THE PILOT IN COMMAND FOUND THAT THE FORE AND AFT MOVEMENT OF THE CYCLIC SERVO WAS RESTRICTED IN THE FORWARD MOVEMENT. THE ACFT WAS Mar 15, 2013 · Snias AS350BASDR CA130311025Nut · loose(CAN) HYDRAULIC SERVO, WAS FOUND TO HAVE A LOOSE ROD END JAM NUT ON THE FORWARD END OF THE SERVO. THE NUT LOCKS THE ROD END FROM SPINNING IN OR OUT OF THE SERVO SHAFT. THIS ROD END IS NOT FIELD ADJUSTABLE AND THE LENGTH IS SET UP AT O/H/FACTORY. THE LOCK NOMar 11, 2013 · Bell 407SDR CA130208006Servo · seized(CAN) DURING START SEQUENCE THE TAIL ROTOR PEDAL MOVED AND SEIZED IN FULL LT CONFIGURATION. THE PILOT ACTUATED THE HYDRAULIC TEST SWITCH AND THE TAIL ROTOR PEDAL DID RETURN TO NEUTRAL POSITION. A MECHANIC WAS DISPACTH TO THE ACFT AND WITH THE HELP OF A REMOFeb 7, 2013 · Snias AS350B2SDR CA130116019Piston · worn(CAN) PLASMA COATING HAS DETACHED FROM APPROXIMATLEY 60 PERCENT OF THE UPPER RING OF THE PISTON HEAD.Jan 16, 2013SDR CA130116018Piston · worn(CAN) PLASMA COATING HAS DETACHED FROM APPROXIMATELY 20 PERCENT OF THE UPPER RING OF THE PISTON HEAD.Jan 16, 2013SDR VY1R2013FA0000048Servo · leakingDURING INSPECTION, MX FOUND THE TAIL ROTOR SERVO HAD DEVELOPED A STATIC LEAK. REPLACED IAW AMM 67-33-00.Jan 15, 2013 · N3972A · Snias AS350B3SDR 2012FA0000808Servo Control · wornDURING THE ACCIDENT INVESTIGATION, ABNORMALITIES IN THE FORE & AFT SERVO ACTUATOR WERE NOTED. THE SERVO ACTUATOR WAS SENT TO THE NTSB LAB FOR EXAMINATION IN WHICH THERE IS A STRONG POSSIBILITY THAT THE UPPER ROD END ON THE FORE & AFT SERVO WAS A PROBLEM. THE Dec 10, 2012 · N58020 · Aerosp AS355F1SDR CA121206001Servo · malfunctioned(CAN) DURING THE GROUND RUNS, THE PILOT COULD NOT GET THE SERVOS TO DEPLETE WHILE DOING THE HYD TEST CHECK. THE TEST BUTTON ON THE CONSOLE WAS PRESSED IN AND THE PILOT STIRRED THE CYCLIC FOR ABOUT A MINUTE WITH NO INDICATION OF THE SERVO ACCUMULATORS DEPLETINDec 3, 2012 · Snias AS350B2SDR CA121128003Servo · leaking(CAN) SERVO LEAKING EXCESSIVELY FROM PILOT VALVE AND LOWER SEAL. DISCOVERED DURING ANNUAL INSPECTION, A POOL OF HYDRAULIC FLUID UNDER THE SERVO AND RUNNING THE FRONT OF THE TRANSMISSION ONTO THE MOUNTS AND TRANSMISSION DECK. HYDRAULIC FLUID WAS ALSO COVERING Nov 27, 2012 · Robsin R44RAVENIISDR CA121102002Servo · frozen(CAN) AFTER DEPARTING AIRPORT ON A LOCAL FLIGHT TO THE FORESTRY PAD, PARTIAL CONTROL LOSS WAS EXPERIENCED. THE FORWARD CYCLIC MOVEMENT WAS IMPEDED AND IT WAS NOT POSSIBLE TO MOVE THE CYCLIC INTO THE FORWARD QUADRANT OF ITS MOTION. SUSPECTING ICE ON THE CYCLINov 1, 2012 · Snias AS350BASDR QMLA2012102112171Servo · unserviceablePILOT HAD NORMAL START AND TAKEOFF, AS AIRSPEED PICKED UP ACFT HAD UNCONTROLED ROLL TO RIGHT. FULL LEFT CYCLIC AND LEFT PEDDAL WOULD NOT FIX STRAIGHTEN ACFT OUT. WENT WITH ROLL TO RIGHT AND JUST MADE A BIG RIGHT TURN AND LANDED BACK AT PAD WITH NO PROBLEMS. Oct 21, 2012 · N115LN · Snias AS350B2SDR CA121012009Servo · leaking(CAN) SERVO ACTUATOR FOUND TO BE LEAKING. SERVO ACTUATOR REPLACED.Sep 21, 2012 · Snias AS350B2SDR CA120910008Servo · leaking(CAN) ALL THREE HYDRAULIC SERVOS FOUND LEAKING AT PILOT VALVE. SERVO REPLACED.Aug 29, 2012 · Robsin R44RAVENIISDR 2012FA0000612Switch · stuckSERVO LIGHT DOES NOT EXTINGUISH WHEN SERVO TEST SWITCH IS PRESSED. . FOUND SWITCH ON SERVO STICKINGAug 28, 2012 · N791AM · Snias AS350B3SDR CA120712006Servo · malfunctioned(CAN) OPERATOR STATED THERE WERE QUALITY CONTROL CONCERNS WITH UNIT ZERO TIME SINCE O/H. SERVO FUNCTIONALLY CHECKED PRIOR TO DISASSEMBLY, TIMING WAS FOUND TO BE OUT, SERVO PISTON ACTUATED TO FULL EXTEND VERY SLOWLY WHEN PISTON SPEED SHOULD BE EQUAL ON RETRACT Jul 12, 2012SDR CA120712007Servo · worn(CAN) INTERMITTENT VIBRATIONS WERE FELT THROUGH AIRFRAME DURING A FUNCTION CHECK OF THE HYDRAULICS. UPON INSPECTION OF THE T/R SERVO THE HARDWARE AND BUSHING WERE FOUND TO BE WORN. THIS CAUSED A FLUTTERING OF THE INPUT VALVE WHICH WAS FELT THROUGH THE AIRFRAJul 8, 2012 · Bell 407SDR CA120627013Servo · no test(CAN) SERVO RECEIVED FROM OPERATOR AS ZERO TIME SINCE O/H. THE SERVO WAS FUNCTIONALLY TESTED PRIOR TO DISASSEMBLY. HYDRAULIC PRESSURE WAS APPLIED AND LOWER CYLINDER AUTOMATICALL WENT TO FULL EXTEND AND UPPER PISTON TO FULLY RETRACT WITH LEVER IN NEUTRAL POSITJun 27, 2012SDR CA120629002Servo · leaking(CAN) DURING A 100 HOUR INSPECTION OF THE ACFT. THE HYDRAULIC SERVO WAS FOUND TO BE LEAKING. SERVO REPLACED.Jun 17, 2012 · Robsin R44RAVENIISDR CA120629006Servo · leaking(CAN) DURING THE 100 HOUR OF THE ACFT, 3 HYDRAULIC SERVOS WERE FOUND TO BE LEAKING.Jun 10, 2012 · Robsin R44RAVENIISDR CA120531002Servo · leaking(CAN) HYDRAULIC SERVO FOUND LEAKING DURING ACFT 100 HR INSPECTION. SERVO REPLACED.May 13, 2012 · Robsin R44RAVENIISDR CA120517006Servo · leaking(CAN) LEFT HYDRAULIC SERVO FOUND LEAKING DURING 100 HR AIRFRAME INSPECTION. HYDRAULIC SERVO REPLACED.May 11, 2012 · Bell 206BSDR CA120507020Servo · leaking(CAN) HYDRAULIC SERVO FOUND LEAKING DURING 100 HR INSPECTION. HYDRAULIC SERVO REPLACED.Apr 29, 2012 · Robsin R44SDR CA120504009Servo · leaking(CAN) DURING 100 HR INSPECTION, HYDRAULIC SERVOS LT AND RT WERE FOUND TO BE LEAKING. BOTH SERVOS WERE REPLACED.Apr 24, 2012 · Robsin R44RAVENIISDR CA120314004Servo · leaking(CAN) AFTER A FLIGHT, DURING THE ALF CHECK, THE PILOT DISCOVERS PRESENCE OF HYDRAULIC FLUID AROUND THE LT MAIN ROTOR SERVO. AFTER CLEANING, IT IS DISCOVERED DURING A RUN-UP THAT THE FLUID COMES FROM THE INTERFACE BETWEEN THE MAIN BODY AND THE UPPER ARM, 3 ALLMar 11, 2012 · Snias AS350BASDR CA120408007Servo · leaking(CAN) HYDRAULIC SERVO FOUND LEAKING DURING 100 HR INSPECTION. 2 OTHER SERVOS ALSO FOUND TO BE LEAKING. ALL 3 HYDRAULIC SERVOS REPLACED.Feb 29, 2012 · Robsin R44RAVENIISDR CA120408004Servo · leaking(CAN) HYDRAULIC SERVO FOUND LEAKING DURING 100 HR INSPECTION. HYDRAULIC SERVO REPLACED.Feb 28, 2012 · Robsin R44RAVENIISDR CA120717010Servo · malfunctioned(CAN) WHEN INSTALLING THE SERVO THE ENGINEER NOTICED IT WAS IMPOSSIBLE TO INSTALL THE LOWER ROD BEARING AS THERE WERE NO THREADS IN THE PISTON. THE SERVO WAS AN O/H UNIT. THE SERVO WAS SENT TO ANOTHER O/H SHOP FOR REPAIR AND IT WAS NOTICED THAT THE PISTON WAJan 10, 2012SDR CA111214009Servo · defective(CAN) PART RECEIVED FROM CUSTOMER AS ZERO TIME FROM OVERHAUL. CUSTOMER REPORTED THAT LOWER CYLINDER LOCKS, WILL NOT EXTEND. SUSPECT IMPROPER BYPASS & SERVO LOWER CYLINDER SP & SI TIMING. SERVO FUNCTIONALLY CHECKED PRIOR TO DISASSEMBLY. THE SERVO LOWER PISTODec 14, 2011 · Bell 212SDR CA111214006Servo · defective(CAN) SERVO RECEIVED ZERO TIME SINCE OVERHAUL. CUSTOMER REPORTED LOWER CYLINDER ASSEMBLY LOCKS HYD WILL NOT EXTEND. SUSPECT IMPROPER BYPASS SERVO TIMING. SERVO FUNCTIONALLY TESTED PRIOR TO DISASSEMBLY. THE SERVO LOWER PISTON MOVED TO THE EXTEND POSITION BUDec 14, 2011 · Bell 212SDR CA120104001Actuator · binding(CAN) PILOT NOTED STICKY TAIL ROTOR PEDALS ON FINAL APPROACH. TAIL ROTOR SERVO ACTUATOR REPLACED.Dec 5, 2011 · Bell 206BSDR CA111130009Transducer · failed(CAN) PILOT REPORTED PEDAL FEEDBACK DURING FLIGHT. FEEDBACK DISAPPEARED BELOW 40 KTS. MAINTENANCE REPORTED, TAIL ROTOR SCAS TUBE P/N 7018078 & NO. 1 YAW CMT P/N 412-074-101-103 REPLACED. DETAILS OF MAINTENANCE CARRIED OUT ONADDITIONAL TASK SHEETS (3). AIRCRAFNov 23, 2011 · Bell 412SDR CA111117013Servo · leaking(CAN) HYDRAULIC SERVO FOUND LEAKING DURING SCHEDULED AIRCRAFT INSPECTION. HYDRAULIC SERVO REPLACED.Oct 19, 2011 · Robsin R44RAVENIISDR PG92011F00009Servo · wornPILOT FOUND UPPER ROD END BEARING LOOSE, WITHIN SERVO HOUSING. ON FURTHER INVESTIGATION, FOUND THREADS IN SERVO BODY WORN BEYOND LIMITS. COULD HAVE CAUSED A CATASTROPHIC FAILURE.Sep 12, 2011 · N138PH · Urocop EC130B4SDR CA110928016Servo · leaking(CAN) HYDRAULIC SERVO FOUND LEAKING DURING ACFT INSPECTION. HYDRAULIC SERVO REPLACED.Aug 29, 2011 · Bell 206BSDR CA130610012Barrel · cracked(CAN) MAIN ROTOR ACTUATOR, SERVO, FOUND TO HAVE INCREASING LEAKAGE DURING DAILY INSPECTIONS OVER A PERIOD OF 3 OPS DAYS UNTIL IT WAS REMOVED FOR EXCESSIVE LEAKAGE. UNIT LATER SENT FOR REPAIR AND FOUND TO HAVE CRACKED BARREL, PN 41005043 THAT CAUSED THE LEAKAGEJul 20, 2011 · Bell 214B1SDR CA110617007Accumulator · no testFOR/AFT ACCUMULATOR TEST FAILED. - ACCUMULATOR REMOVED AND BENCH TESTED UNSERVICABLE DUE TO INTERNAL LEAKAGE.Jun 16, 2011 · Snias AS350*SDR CA110223008Rod End Bearing · broken(CAN AFTER PERFORMING A BRIEF GND RUN & SHUTDOWN WITH NO INDICATION OF ANYTHING WRONG, THE PILOT & ENGINEER WERE WALKING AROUND THE TAIL OF THE ACFT, THEY NOTICED THE RUDDERS AT FULL RT DEFLECTION, THE PILOT HAD LEFT THE PEDALS IN THE NEUTRAL POSITION. THIS PFeb 22, 2011 · Kamov KA32A1SDR CA101024001Servo Control · failedHYD SERVO WHICH CONTROLS FORE/AFT CYCLIC MOVEMENT WOULD NOT SHUTOFF WHEN COLLECTIVE "HYD SHUTOFF" SWITCH IS ACTIVATED. THE SERVO CONTINUED TO OPERATE ON ACCUMULATOR PRESSURE FOR APPROX 20 SECONDS UNTIL ACCUMULATOR WAS DEPLETED. IN THE EVENT OF A FLIGHT CONTROOct 15, 2010 · Urocop EC120BSDR CA101115010Servo · leaking(CAN) HYDRAULIC SERVO PN: 206-076-031-015 FOUND LEAKING FROM VALVE ASSEMBLY DURING 100 HOUR INSPECTION. HYDRAULIC SERVO REPLACED.Oct 3, 2010 · Bell 206BSDR CA101110003Actuator · leaking(CAN) SERVO ACTUATOR PN: 206-076-031-013 FOUND LEAKING DURING MAINTENANCE GROUND RUN.Sep 23, 2010 · Bell 206BSDR CA100923003Servo · binding(CAN) PILOT NOTED STIFF SPOTS IN COLLECTIVE MOVEMENT. DURING INSPECTION OF SWASHPLATE FOR SMOOTHNESS HYDRAULIC COLLECTIVE SERVO FOUND TO HAVE TIGHT SPOTS. COLLECTIVE SERVO REPLACED. NO FURTHER ISSUES NOTED.Sep 1, 2010 · Bell 206B
Back to JASC 6730