JASC 6120
Service difficulty reports · 1,421
Reports filed under 6120 · Propeller Controlling 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 = '6120' 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 = '6120' 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 CA120912001Governor · malfunctioned(CAN) CREW COMPLETED IFSD DUE TO OVER SPEED ON NR 2 ENGINE, 1075 RPM FOR 18 SEC CHANNEL A F/C 236+270 CHANNEL B 260+270. PEC REPLACEMENT WITHOUT SUCCESS, PRESENT FAILURE CODE 238. PROP OVER SPEED GOVERNOR REPLACED. AC RTS.SDR QXEA2012082500868Pcu · malfunctionedON LANDING, WHEN POWER LEVERS WERE BROUGHT TO DISC, THE NR 1 DID NOT GO INTO BETA, UNTIL JUST BEFORE STOPPING AT THE GATE THE POWER LEVERS WERE IN DISC THE ENTIRE TIME THE NR 1 PROP GROUND RANGE LIGHT DID NOT ILLUMINATE. THE ACFT PULLED TO THE RIGHT ON ROLL OSDR SWIA201231504Pcu · malfunctionedLEVELING OFF AT 7000 FT, RIGHT NP SURGED TO 103 PERCENT THREE TIMES. (FLT 5469) REPLACED RIGHT ENGINE PCU IN REFERENCE TO AMM. P/N:782490-46 S/N OFF: 880836SDR CA120813009Control System · malfunctioned(CAN) AFTER STARTING THE NR 1 ENGINE, IN PREPARATION FOR A REVENUE FLIGHT , THE CLA WAS MOVED AND THE PROPELLER SPEED EXCEEDED 120 PERCENT. THE FLIGHT CREW SHUTDOWN THE ENGINE. PASSENGERS WERE DISEMBARKED SAFELY. NO FAULTS RECORDED IN ELECTRONIC ENGINE CONTROSDR CA120813001Controller · malfunctioned(CAN) THERE HAVE BEEN REPEAT EVENTS ON THIS PARTICULAR ACFT. THERE HAVE BEEN REPEATED ADJUSTMENTS TO GET THE PROPELLER RPM TO REMAIN AT 1900 AND MANY TIMES THERE HAVE BEEN REPORTS FROM THE CREWS OF THE PROPELLER RPM INCREASING AND REPORTED SURGES DURING CLIMBSDR CA120724006Controller · malfunctioned(CAN) LOSS OF RPM ON FINAL APPROACH. HIGH PITCH STOP SCREW CAME LOOSE. PROPELLER WOULD NOT REACH LOW PITCH.SDR QXEA2012070900647Governor · malfunctionedNR 2 PROPELLER SLOW TO COME OUT OF FEATHER, TAKES APPROX 10 SECONDS LONGER THAN NR 1, OVERALL TIME UNKNOWN. PERFORMED TROUBLESHOOTING IAW FIM TASK NR 61-20-00-810-803, STEPS 1-5A (7). INTERROGATED CDS AND PEC FOR FAULT CODES. NO FAULT CODES PRESENT. R & R SDR CA120712001Solenoid Valve · failed(CAN) WHILE ADVANCING POWER LEVER ON CLIMB OUT ENGINE TORQUE WAS UN-RESPONSIVE. THIS WAS CAUSE BY A FAULTY PROPELLER GOVERNING SYS THAT CAUSED THE ENGINE RPM TO CLIMB UNTIL THE FCU OVERSPEED GOVERNOR SETTING WAS REACHED PRIOR TO THE FINAL POWER LEVER ADVANCEMSDR QXEA2012070700593Propeller · malfunctionedNR 1 PROPELLER WILL NOT MX GROUND UNFEATHER WITHOUT BLADE BALANCE ASSISTANCE. GROUND RAN ENGINE, MOVED CLA FOR NR 1 PROP SEVERAL TIMES IN AND OUT OF FEATHER POSITION. AFTER SHUTDOWN UNFEATHERED NR 1 PROP IN GROUND MX MODE. PROP UNFEATHERED WITHOUT ASSISTANSDR CA120706006Solenoid · shorted(CAN) RIGHT PROPELLER SOLENOID CIRCUIT BREAKER TRIPPED. RESET BREAKER RT PROPELLER SOLENOID SHORT INTERNALLY WAS REPLACED ABOUT 30 FLIGHT HRS AGO.SDR V2JA201207020001Switch · out of adjustDURING APPROACH, NOTICED A STRONG YAW AND RT TORQUE WAS CONSIDERABLY LOWER THEN THE LT BUT CLIMBING. TORQUE QUICKLY RETURNED TO NORMAL, MATCHING THE RT AND NO OTHER ANOMALIES WERE NOTED. MONITORED ENGINE FOR LAST 600 OR 700 FT OF APPROACH. LANDING, ROLL SDR QXEA2012062300531Computer · malfunctionedAUTOFEATHER TEST WILL NOT FINISH BOTH SIDES SHOW "A/F TEST ABORT". FOUND FAULT CODE IN CDS NR 2 PROP 30B. COMPLIED WITH FIM TASK 61-20-01-810-816. DETERMINED THE PEC HARD FAILED. R & R NR 2 PEC IAW AMM TASK 61-20-36-000-801, 61-20-36-400-801. OP'S CHECKED GSDR CA120702005Sensor · dirty(CAN) (ACFT MODEL- XIAN MA60) ENGINE HAD AN AUTO FEATHER EVENT AFTER TAKEOFF. ELECTRONIC ENGINE CONTROL MANUAL LIGHT ILLUMINATED, BUT NO FAULT CODE FOUND. NR 1 TQ SENSOR WAS FOUND DIRTY. NR 2 TQ SENSOR RESISTANCE WAS OUT OF LIMIT. ACFT RETURNED TO SERVICE.SDR CA120719012Actuator · corroded(CAN) AN ACTUATOR WAS PURCHASED FROM A US BASED COMPANY FOR RESALE. UPON RECEIVING THE ACTUATOR, IT WAS NOTED THAT ALTHOUGH THE PROVIDED STRIP REPORT SHOWED SB 14SF-61-141 WAS COMPLIED WITH, THERE WAS NO INDICATION OF THIS ON THE PART ITSELF. A DECISION WAS MSDR QXEA2012060400423Pcu · malfunctionedDURING ROLLOUT AND TAXI-IN ACFT SEEMED TO BE PRODUCING THRUST WITH POWER LEVERS AT FULL DISC POSITION. CONSTANT BRAKING WAS NEEDED TO CONTROL SPEED. AFTER SHUTDOWN NR 2 PEC CAUTION & POWERPLANT MESSAGE. REPLACED NR 2 PCU & JUNCTION BOX DB3-K2 DAUGHTER BOARD 3SDR QXEA2012060400419Transducer · malfunctionedDURING TAXI IN, THE NR 2 AC GEN AND NR 2 PEC CAUTION ILLUMINATED. COMPLIED WITH THE EC FOR THE NR 2 AC GEN CAUTION. COMPLIED WITH EC AND SHUT NR 2 ENGINE DOWN. ALSO THERE IS A POWERPLANT MESSAGE ON THE ED. INTERROGATED CDS AND FOUND THE FOLLOWING FAULTS: SDR QXEA2012052900410Propeller · malfunctionedAFTER LANDING, DURING TAXI , PROPS DIDN'T SEEM TO COME OUT OF FLT IDLE TO DISC FOR A MINIMUM OF 20 SECS, POSSIBLY LONGER. ACFT TAXIED AT FASTER THAN NORMAL SPEED & ACCELERATED IF BRAKES WERE NOT APPLIED WITH POWER LEVERS IN DISC POSITION. AFTER 20 OR MORE SECSDR CA120523013Controller · malfunctioned(CAN) AUTOFEATHER DID NOT ARM DURING TAKEOFF RUN. EVEN WHEN TORQUE REACHED 81 PERCENT. CREW ABORTED TAKEOFF. ACFT HANDED OVER TO MAINTENANCE. AUTOFEATHER TEST FAILED ON GROUND. FAULT CODE 398 STORED ON ENG NR 2, CHANNEL B. REPLACED NR 2 PEC. ACFT GROUNDSDR 2012FA0000282Oil Cap · looseAFTER LEVELING OFF AT 5,500 MSL THE CREW BEGAN LEANING MIXTURES AND THE RT ENGINE RPM BEGAN TO DROP AT A STEADY RATE. NO ENGINE ANNUNCIATORS APPEARED AND ALL ENGINE INSTRUMENTS READ NORMAL AFTER 15 SECONDS THE RT PROP WENT FULL FEATHER AND THE ENGINE WAS SHUTDSDR CA120517001Valve · faulted(CAN) THE AIRCRAFT TAKEOFF, LT PROPELLER ENCOUNTERED AN UNDERSPEED SITUATION. THE ACFT RETURNED TO DEPARTURE. THE AME TROUBLESHOT THE PROBLEM, WE FOUND THE PITCH LOCK VALVE AT FAULT. THE PITCH LOCK VALVE, PN 6506196 WAS REPLACED AND THE ACFT RETURNED TO SERVSDR CA120502005Control Unit · failed(CAN) UNCOMMANDED FEATHER OF NR 1 ENGINE ON TAXI. ENGINE WAS S/D BY CREW.SDR QXEA2012042000340Governor · failedAFTER START, MOVED CLEVIS OUT OF START/FEATHER AND THE NR 1 ENGINE TOOK 1:50 MINUTES, FIRST TIME TO UNFEATHER AND 0:50 THE 2ND TIME TO UNFEATHER. AFTER SHUTDOWN,THE NR 1 ENGINE PROPELLERS WERE 20 DEG TO 30 DEG OUT OF THE TYPICAL FEATHER POSITION. INTERROGATSDR CA120406003Switch · inoperative(CAN) WHEN BUMPING POWER UP TO START TAXIING, THE NR 1 PROP SPEED DROPPED TO 450 RPM & TQ INCREASED TO 90 PERCENT +. CREW COULD NOT CONFIRM ACTUAL MAX TORQUE P/L WAS IN FLT IDLE & C/L AT MIN. NR 1 PCU LOW PITCH SWITCH FOUND AT FAULT, CONN P2. SWITCH STICKINGSDR QXEA2012032800257Propeller · malfunctionedON LANDING, PROPELLERS DID NOT APPEAR TO GO TO DISCING, HAD TO RIDE BRAKES EVEN IN FULL DISC ON TAXI. NR 2 PROP GROUND RANGE LIGHT WAS NOT ILLUMINATED EVEN AT FULL DISC. JUST SHORT OF PARKING IT WENT BACK TO NORMAL. NO FAULTS NOTED. GROUND RAN BOTH ENGINESSDR NSVA20120312471Controller · faultyRETURNED TO GATE DUE TO A POWERPLANT MESSAGE. MX REMOVED AND REPLACED THE PEC.SDR SWIA201229618Pcu · failedLEFT NP DROPPED BELOW 97 PERCENT. (FLT 5583) REPLACED LEFT ENGINE PCU ASSEMBLY. P/N OFF 782490-46, S/N OFF 900654SDR SWIA201229525Control Unit · failedRIGHT PROPELLER WENT INTO UNCOMMANDED FEATHER SEVERAL TIMES DURING TAXI IN. (FLT 6325) REPLACED PROPELLER CONTROL UNIT PER AMM PN: 782490-46, SN OFF: 891114.SDR QXEA2012020300149Controller · malfunctioned"A/F TEST FAILED" CAUTION MESSAGE ON NR 1 ENGINE AFTER A/F TEST. CHECKED CDS, FOUND FAULT 400A ON NR 1 PEX REF FIM 61-20-09-810-806. FOUND NR1 PEC HAS PRIOR HISTORY OF SAME FAULT ON OTHER ACFT. R & R NR1 PEC IAW AMM 61-20-36-000-801/400-801. CHECKS GOOD IAW ASDR NSVA2011415Pcu · malfunctionedFLIGHT 4911 PIT EWR ON AIRCRAFT 199WQ DECLARED AND EMERGENCY DUE TO NR 2 PROP OVER SPEED. QUICK REFERENCE MANUAL REQUIRED AN ENGINE SHUTDOWN. THE CREW WAS AT 7000 FEET ON LANDING INTO EWR WHEN THE OVER SPEED OCCURRED. THE AIRCRAFT LANDED SAFELY IN EWR WITH SDR JIKA12010101Ball Joint · brokenTHE PILOT REPORTED THAT ON CLIMBOUT, ENGINE INDICATIONS WERE NORMAL. AT APPROX 6500FT RT ENGINE PROP RPM SUDDENLY WENT TO REDLINE. BROUGHT RT PROP LEVER BACK WHICH HAD NO EFFECT ON THE PROP RPM. REDUCED RT THROTTLE TO BRING THE RPM DOWN TO 2500. NOTIFIED DSDR SWIA201128780Control Unit · failedLEFT PROPELLER FEATHERS. (FLT 5460) REPLACED LEFT ENGINE PROPELLER CONTROL UNIT. P/N:782490-46 S/N OFF:980616SDR QXEA2011112801248Synchrophaser · out of adjustLOSS OF PROP SYNC ON FINAL, F/O SELECTED RDC NP FOR LANDING, PROPS REMAINED AT 1020 NP AT APPROX 1000 AGL BOTH PROPELLER SPEEDS STARTED DRIFTING. NR 1 PROP BETWEEN 1020-980 NP, NR 2 PROP BETWEEN 1000-950 NP. NR 2 SHOWED GREATER DEVIATIONS AND ALWAYS REMAINED SDR CA111114006Pcu · leaking(CAN) ON CLIMB OUT THE ENG OIL PRESS WARNING LIGHT ILLUMINATED & THE CREW ELECTED TO RETURN. THE ACFT LANDED WITHOUT FURTHER INCIDENT. THE CREW PERFORMED A VISUAL INSPECTION OF THE ENG & FOUND EVIDENCE OF OIL LEAK. INSPECTED THE ENG, REPLACED THE PROPELLER SDR 2011FA0000722Beta Tube · out of adjustTHE NR 2 PROPELLER WAS REPLACED WITH AN O/H PROPELLER. GROUND RUNS REVEALED NO DISCREPANCIES AND THE ACFT WAS RETURNED TO SERVICE. THE ACFT FLEW A MISSION AND UPON RETURN THE CREW HAD A PROPELLER REVERSE THRUST WRITE-UP ON THE NR 2 PROPELLER. AFTER TROUBLESHOSDR QXEA2011103101098Pcu · malfunctionedNR 1 PEC CAUTION LIGHT AND POWERPLANT MESSAGE RECEIVED DURING TAKEOFF ROLL AT 30 KNOTS. ABORTED TAKEOFF. DURING ABORTED TAKEOFF, RECEIVED A NR1 AC GENERATOR CAUTION LIGHT, AND AFTER CLEAR OF THE RUNWAY NOTICED THE NP TO BE AT 200. FOUND FAULT CODES 260 CHANNSDR CA111117019Governor · failed(CAN) AIRCRAFT DEPARTED AND PILOTS NOTICED RT PROPELLER WOULD NOT INCREASE PAST 1900 RPM. TAKE-OFF RPM IS 2000 RPM. IN THE CLIMB IT WAS DECIDED THEY RETURN THE ACFT BACK TO DEPARTURE. TROUBLESHOT AND FOUND THAT THE RT ENGINE OVERSPEED GOVERNER, AIRFRAME COMSDR CA111019021Block · seized(CAN) LT CARBON BLOCK FOUND ASCUE AND SEIZED DURING ADI CAUSING ABNORMAL WEAR TO THE BLOCK. CARBON BLOCK WAS REPLACED AND ACFT RETURNED TO SERVICE.SDR CA111004001Actuator · leaking(CAN) THREE ABORTED TAKEOFFS DUE TO CREW REPORTS OF PROP "SURGING" AND FAIL TO REACH 1020 RPM. MX REPLACED THE PCU, PEC, OSG, AND THEN REPLACED THE PROP ASSY. AFTER REMOVING THE PROP ACTUATOR CYLINDER ASSY, DETERIORATION OF THE PISTON SEAL AND BACKUP RINGS WSDR QXEA2011092600897Switch · failedOVERSPEED GOV TEST SELECT SWITCH FAILED WHILE PERFORMING OVERSPEED GOVERNOR TEST, TASK CARD 612000213. FERRY. INTERROGATED CDS, NO PEC OR FADEC FAULTS FOUND. R &R PROP OVERSPEED GOV'R TEST SWITCH IAW AMM 20-30-07-000-801/-400-801. OPS TEST OF PROP OVERSPEED GOSDR CA110915008Bolt · worn(CAN) THE BOLT THAT ATTACHES THE LT PROP GOVERNOR CABLE FORK END TO THE PROP GOVERNOR LEVER WAS FOUND SEVERELY WORN, PART WAY THROUGH THE SHANK OF THE BOLT. THIS WAS DISCOVERED DURING SCHEDULED ENGINE MX. WHEN THE LEVER WAS WIGGLED TO CHECK FOR TIGHTNESS ANDSDR HNAA2011091900293Ecu · failedDURING SHUTDOWN WITH NR1 CONDITION LEVER IN START/FEATHER. NR 1 ENGING TORQUE SURGED TO 90 PERCENT AND PROPELLER RPM STAYED AT 600 FOR 7 SECONDS. ALL OTHER PARAMETERS NORMAL. R & R ECU. PERFORMED RUN UP OPS CHECK IAW MX RUN UP MANUAL FOR COMPONENT CHANGED.SDR BSYA2011032Control Cable · brokenEN ROUTE FROM RME TO BED PILOT REPORTS THE RIGHT ENGINE OVERSPEEDED TO 3500 RPM AND HAD NO CONTROL. SHUT THE ENGINE DOWN AND LANDED IN EEN NO PROBLEM. MAINTENANCE RAN THE RIGHT ENGINE AND IT MADE TAKEOFF POWER 2700 RPM, BUT HAD NO CONTROL OF PROPELLER. FOUNSDR CA110829017Regulator · faulty(CAN) CREW REPORT - 800 DEGREE CHECKS OK, ADVANCED POWER AND STARTED TAKEOFF ROLE. TIT, FF AND POWER NORMAL, HOWEVER RPM INDICATION WAS DECAYING. TAKEOFF ABORTED AND ACFT TAXIED BACK TO BASE. TROUBLESHOOTING FOUND REGULATOR TO BE FAULTY. REGULATOR CHANGED.SDR TRBA201122104Controller · malfunctionedNR 1 PROPELLER INCREASED TO 100 AND TORQUE DROPPED TO 60 FOR 10 SECONDS THEN RECOVERED. R & R NR 1 PEC IAW JIC 61-21-63. OPS CHECKED SATISFACTORY.SDR CA110712005Governor · leakingPILOT COMPLAINED OF RT ENGINE RPM LAGGING DURING POWER UP FOR TAKEOFF, (APPROX 300-500 RPM). RIGHT PROP GOVERNOR REMOVED AND INSPECTED BY REPAIR FACILITY. FINDINGS NOTED INTERNAL LEAKAGE IN GOVERNOR HIGHER THAN ALLOWABLE. PROP GOVERNOR REPAIRED, TEST FLIGHT SDR CA110707008Control Cable · failedDURING ENGINE REPLACEMENT AND SUBSEQUENT PROPELLER CONTROL RIGGING, PROPELLER CONTROL STOPPED MOVING WHEN PROPELLER PITCH CONTROL LEVER WAS MOVED. FOUND PROPELLER CONTROL INNER WIRES TORN APART JUST DOWN STREAM OF THE UPPER CONTROL CONNECTOR SHAFT AT THE PROPSDR CA110705001Pcu · malfunctionedCREW MANUALLY SHUTDOWN (IFSD) LT ENGINE DUE TO A PEC FAULT & POWERPLANT MESSAGE FOLLOWED BY PROP OVERSPEED. AT FL 9500, TORQUE WAS INDICATING 106 PERCENT, POWER WAS THEN REDUCED AND WITH MCL SET AT 850, RPM WENT TO 1064. THE FAULT CODES RETRIEVED AFTER THE ASDR HNAA2011060100154Controller · failedDURING TAKEOFF ROLL, WHILE ADVANCE POWER FOR TAKEOFF, NR2 PROP RPM DROPPED TO 500 RPMS AND CONTINUE TO DROP. REPLACED NR 100 TSCU CONTROLLER AND SECURED, OPS CHECKED ACFT IAW -8 MAINT. OPERATING MANUAL. REFERRING TO COMPONENT CHANGE OUT. OPS CHECKED GOOD ON SDR CA111117007Governor · leaking(CAN) OIL LEAK FOUND AT PROPELLER GOVERNOR HEAD GASKET AT INSPECTION.SDR CA110502003Yoke · cracked(CAN) CUSTOMER SENT PROPELLER ACTUATOR ASSY TO SHOP DUE TO INTERNAL LEAKAGE CAUSING PROPELLER HUB TO PRESSURIZE AND BLOW THE RELIEF VALVE. ACTUATOR WAS PUT ON TEST STAND, TESTED AT 400PSI AND SHOWED A POSITIVE LEAK RATE OF APPROXIMATELY .5 LITRE PER MINUTE. F
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