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.

SDR HYIA20260522001Governor · faultedPILOT REPORTED AN UN-COMMANDED FEATHER ON THE RIGHT ENGINE. MAINTENANCE INSPECTED RH PROP AND FOUND NO DEFECTS NOTED AT THIS TIME. REMOVED RH PROP GOVERNOR AND INSPECTED INSIDE CRANK CASE AND FOUND NO DEFECTS. NOTED THAT RH PROP GOVERNOR NOT HITTING BOTH STOPSMay 14, 2026 · N989CA · Tecnam P2012SDR 2026FA0000203Control Cable · brokenAIRCRAFT ABORTED TAKEOFF DUE TO LOW POWER. UPON INSPECTION FOUND PROPELLOR GOVERNOR CABLE BROKEN. MAINTENANCE REPLACED THE PROP CONTROL CABLE AND PROP CONTROL CABLE ROD END.Mar 20, 2026 · N9055P · Piper PA24260SDR 2024FA0000723Solenoid · wornTHE LH PROPELLER PITCH SOLENOID WAS STICKING AND NEEDED TO BE REPLACED. WAS NOT ALLOWING THE THROTTLE TO ADVANCE PROPERLY ON ROLLOUT FOR TAKEOFF.Sep 18, 2024 · N555AL · Beech B300SDR 7C7A2023040600025Pcu · failedTHIS IS FILLING IN DETAILS FOR SDR FILED ON 4/1/2023 7C7A2023040100020 ENGINE TORQUE INCREASED 3% UNCOMMAND IN FLIGHT. REPEATED 2 MORE TIMES R/R #1 PCUApr 1, 2023 · N887EA · Dhav DHC8106SDR QXEA2022122700346Pec · malfunctionedAUTO FEATHER DID NOT ARM WITH POWER LEVERS SET IN THE DETENT. REMOVED FROM SERVICE. CDS FAULT 400 - #2 PROP CHANNEL #1 AND #2. REMOVED AND REPLACED #2 PEC IAW FIM 61-20-09-810-806. OPS CHECK GOOD. FAULT DID NOT RETURN. RETURNED TO SERVICE.Dec 27, 2022 · N435QX · Bombdr DHC8402SDR QXEA2022121500389Circuit Breaker · trippedNR 2 ENGINE ALTERNATE FEATHER PUMP CIRCUIT BREAKER TRIPPED DURING MAINTENANCE UNFEATHERING ATTEMPT. AIRCRAFT DOWN FOR REPAIRS.Dec 14, 2022 · N446QX · Bombdr DHC8402SDR QXEA2022120900336Switch · inoperative#1 PROP FAILED PROP OVERSPEED GOVENOR TEST. REPLACED OFF SWITCH IAW AMM 31-31-03-960-801 C/W OPERATIONAL TEST OF PROP OVERSPEED GOVERNOR IAW AMM 61-20-00-710-803 NO DEFECTS NOTED.Dec 6, 2022 · N443QX · Bombdr DHC8402SDR UOIA2022112200004Control Cable · lack of lubeLEFT PROPELLER GETTING STUCK INTERMITTENT.Nov 22, 2022 · N904GD · Bnorm BN2B26SDR QXEA2022110400315Pec · noneAUTOFEATHER FAILED TEST. INDICATED A/F TEST FAILED ON #1, A/F TEST ABORT ON #2. CDS POSTED FAULT CODE 494 CHANNEL A &B ON BOTH ENGINES. C/W Q400 FIM TASK 61-20-10-810-826. FAULT CODE CLEARED. OP'S TEST OF THE PROPELLER AUTOFEATHER AND UPTRIM SYSTEM GOOD. REF QNov 1, 2022 · N430QX · Bombdr DHC8402SDR QXEA2022082200276None · none#1 PROP WILL NOT UNFEATHER FOR MAINTENANCE USING THE ALT FEATHER PUMP. REPLACED THE #1 ENGINE PCU IAW AMM 61-20-11-000-801 AND 61-20-11-400-801. CHECKS GOOD 61-20-11-400-801.Aug 17, 2022 · N426QX · Bombdr DHC8402SDR 2022FA0000355Governor · inoperativeDURING ENGINE PRE-TAKEOFF PERFORMANCE RUNS, THE #2 PROP WOULD NOT COME OUT OF FEATHER. MAINTENANCE TEAM INSPECTED THE ENGINE &PERFORMED ENGINE RUNS AND COULD NOT DUPLICATE THE DISCREPANCY. OUT CAUTION, IT WAS DECIDED TO REPLACE THE RH ENGINE PROP GOVERNOR.Jul 18, 2022 · N80 · Beech 300BEECHSDR QXEA2022062700233Propeller · slow#1 PROP VERY SLOW TO UNFEATHER TOOK AT LEAST 40-50 SEC TO COME OUT OF FEATHER. REMOVED FROM SERVICE. PERFORMED FUNCTIONAL TEST OF PROP TIME TO UNFEATHER IAW Q400 AMM 61-20-00-720-802. FUNCTIONAL TEST NORMAL. PROP UNFEATHERED WITHIN 30 SECOND LIMIT. NO FAULTS NJun 25, 2022 · N403QX · Bombdr DHC8402SDR QXEA2022062300229Propeller · sluggish#1 PROPELLER IS SLOW TO UNFEATHER. REMOVED FROM SERVICE. C/W FUNCTIONAL TEST OF THE PROP TIME TO UNFEATHER PER Q400 AMM 61-20-00-720-802. UNFEATHERED IN 27 SECONDS. PROP UNFEATHER TIME GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.Jun 23, 2022 · N403QX · Bombdr DHC8402SDR QXEA2022060900215Powerplant · activation errorPOWERPLANT MESSAGE ON FD DURING APPROACH. REMOVED FROM SERVICE. CDS SHOWS FAULT CODE 428 A/B #1 PROP. Q HI OUTPUT FAULT. C/W FIM TASK 61-20-09-810-815. FAULT CODES CLEARED PER AMM 61-20-36-070-801. C/W AUTO FEATHER /UPTRIM TEST PER AMM 61-20-00-710-810, OPS CHJun 6, 2022 · N427QX · Bombdr DHC8402SDR T4OR2022082400001Pitch Link · galledNEWLY OVERHAULED PROPS, HARTZELL PN HC-B4MP-3C, ON KING AIR B300. INFLIGHT, WHEN POWER WAS REDUCED FOR LANDING, THE PROPS S/N FWA4217 AND FWA4213 WENT FLATTER THAN THE FLIGHT LOW PITCH SYSTEM, CAUSING DANGEROUS DRAG, SIGNIFICANT REDUCTION IN AIRSPEED AND ALTITApr 4, 2022 · N350KD · Beech B300SDR QXEA2022020900050Pec · noneDURING AUTO FEATHER TEST, THE A/F TEST ABORT AND A/F TEST FAILED MESSAGES APPEARED ON THE ED.REMOVED FROM SERVICE. EMU SHOWING THE FOLLOWING FAULTS: #1 PROP: 70B, #2 PROP: 70B AND 398B. COMPLIED WITH DHC-8-400 FIM TASK#'S 61-20-02-810-835 AND 61-20-08-810-818.Feb 7, 2022 · N427QX · Bombdr DHC8402SDR QXEA2022020100045Pcu · noneON TAKEOFF ROLL AUTOFEATHER FAILED TO ARM. ABORT INITIATED AT APPROXIMATELY 95 KIAS. ABORTED TAKE OFF. REMOVED FROM SERVICE. NO FAULTS FOUND IN CDS PER Q400 AMM 61-20-00-710-804. REMOVED AND REPLACED #2 PEC IAW Q400 AMM TASKS 61-20-36-000-801 AND 400-801. ALL Jan 31, 2022 · N427QX · Bombdr DHC8402SDR QXEA2022013100041None · noneABORTED TAKEOFF AT 70-80 KTS A/F FAILED TO ARM CYCLING BETWEEN AF SELECT AND AF ARM. REMOVED FROM SERVICE. INTERROGATED CDS AND FOUND ENG #1 CODE: 70A AND ENG #2 CODE: 70B AND 398B. PERFORMED TWO ENGINE STARTS AND PERFORMED THE OPS TEST OF THE AUTOFEATHER/UPTJan 30, 2022 · N427QX · Bombdr DHC8402SDR QXEA2021012700038Pec · noneDESCENDING THROUGH ABOUT 10,000' BOTH PILOTS FELT A ENGINE SURGE. NOTICED THE LEFT ENGINE PROP RPM FLUCTUATING. STABILIZED @ 850 RPM. NO PROBLEMS AFTER LANDED IN 850 RPM. REMOVED FROM SERVICE. CHECKED CDS. FOUND FAULT 260 A ON #1 PROP POSTED ON 27 JAN 2022, 1Jan 27, 2022 · N432QX · Bombdr DHC8402SDR QXEA2022012400030None · noneDURING DAILY SYSTEM CHECKS THE AUTOFEATHER TEST FAILED 3 TIMES IN A ROW. REMOVED FROM SERVICE. INTERROGATED CDS, NO FAULTS LOGGED. PERFORMED OPS TEST OF THE AUTOFEATHER AND UPTRIM CHECK REF Q400 AMM TASK 61-20-00-710-810. PERFORMED MULTIPLE TIMES WITH NO FAILSJan 23, 2022 · N427QX · Bombdr DHC8402SDR QXEA2022011100020None · noneAUTOFEATHER SYSTEM TEST FAILED DURING DAILY SYSTEMS CHECK. REMOVED FROM SERVICE. INTERROGATED CDS AND FOUND F/C 70A, 398A, 494A/B ON BOTH PROPS, ALL RELATED TO AUTOFEATHER TEST. CLEARED F/C REF Q400 AMM 61-20-36-070-801. PERFORMED AUTOFEATHER TEST REF Q400 AMMJan 11, 2022 · N427QX · Bombdr DHC8402SDR LR7A2021103102988Housing · fluctuatesDURING SCHEDULED FLIGHT #4 ENGINE RPM OUT OF LIMITS AT 96.5%. DECLARED AN EMERGENCY. / REPLACED #4 VALVE HOUSING IAW WORKCARD HN61135 LP 93125Oct 31, 2021 · Lkheed 382GSDR QXEA2021092900455Seal · none#2 ENGINE SLOW TO COME OUT OF FEATHER. REMOVED FROM SERVICE. HAD CREW ENGINES #1 & #2. PERFORMED FUNCTIONAL TEST OF PROP TIME TO UNFEATHER IAW Q400 AMM TASK 61-20-00-720-802. ENGINE #1 WITHIN LIMIT. ENGINE #2 OUT OF LIMIT TAKING APPROX 45 SECONDS. FAILING FUNCSep 28, 2021 · N438QX · Bombdr DHC8402SDR QXEA2021092700449Governor · malfunctionedAFTER START UP, WHEN CONDITION LEVERS WERE ADVANCED FROM START & FEATHER, #2 ENGINE TOOK APPROX. 1 MIN TO COME OUT OF FEATHER. REMOVED FROM SERVICE. R&R #2 ENGINE OSG, OPS TESTS NORMAL. LEAK CHECK NORMAL. NO FURTHER DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.Sep 25, 2021 · N438QX · Bombdr DHC8402SDR LR7A2021090902959Housing · fluctuatesDURING SCHEDULED FLIGHT #4 RPM FLUX OUT OF LIMITS, ENGINE SHUTDOWN, EMERGENCY DECLARED / REMOVED AND REPLACED #4 VALVE HOUSING / LOG PAGE #45997Sep 9, 2021 · N405LC · Lkheed 382GSDR LR7A2021082002957Housing · out of limitsDURING SCHEDULED FLIGHT ON TAKE OFF ROLL #1 RPM OUT OF LIMITS & FLUX / REMOVED AND REPLACED #1 VALVE HOUSING IAW HN61135 OPS CHECK GOOD PER HN7101 / LOG PAGE #46952Aug 19, 2021 · N402LC · Lkheed 382G44K30SDR 9JLA2021080425175Sensor · defectiveTHE FLIGHT CREW REPORTED THAT PROPELLER SYNC FAULTED, THE CREW ADVISED, WHEN ENGAGED THE LEFT PROP WOULD SPEED-UP 25 TO 30 RPM. THE DISCREPANCY WAS DEFERRED FOR CONTINUED OPERATIONS. THE MAINTENANCE TEAM TROUBLESHOT AND DETERMINED THE LEFT PROP SYNCHRO PHASER Jul 16, 2021 · N989BJ · Piagio P180SDR QXEA2021062400322Pec · malfunctionedON ENGINE START,PROPS BROUGHT OUT OF START/ FEATHER, #2 PROP TOOK OVER 50 SECONDS TO INCREASE TO THE GREEN ARC. REMOVED FROM SERVICE. TROUBLESHOOT CDS FOUND CODE 65, PERFORMED #2 ENGINE RUN OPS TEST FAILED TO FEATHER IAW Q400 FIM 61-20-02-810-834. C/W GREASE CJun 24, 2021 · N438QX · Bombdr DHC8402SDR QXEA2021051600240Pec · malfunctionedCLIMBING THROUGH APPROX 11,000 FT THE "POWERPLANT" MESSAGE ILLUMINATED AND REMAINED ILLUMINATED FOR THE REMAINED OF THE FLIGHT, ALL ENGINE INDICATIONS WERE NORMAL. RETURNED TO FILED, LANDING UNEVENTFUL. REMOVED FROM SERVICE. REPLACED #2 PEC. OPS CHECK NORMAL. May 16, 2021 · N412QX · Bombdr DHC8402SDR QXEA2021032800149Pec · malfunctionedWHILE TESTING A/F DURING THE DAILY SYSTEMS CHECKS, #1 ENGINE INDICATES "ABORT" AND #2 ENGINE "FAILED" TEST CONDUCTED TWICE W/ POWER LEVERS IN DISC. REMOVED FROM SERVICE. CDS REPORTED FAULT CODES 494 CH A AND CH B AND 72 CH B #2 PROP. PER Q400 FIM TASK 61-20-02Mar 24, 2021 · N439QX · Bombdr DHC8402SDR QXEA2021032200128Autofeather Sys · no testA/F TEST FAILS TEST, #1 ENGINE ABORT, #2 ENGINE FAILED. REMOVED FROM SERVICE. INTERROGATED CDS . FOUND FAULT 72 CH B ON # 2 ENG DISPLAY. REF Q400 FIM TASK 61-20-02-810-836. CLEARED FAULT AND C/W OPS TEST OF AUTOFEATHER & UPTRIM SYSTEM PER AMM 61-20-00-710-810.Mar 22, 2021 · N439QX · Bombdr DHC8402SDR QXEA2021031200108Power Lever · malfunctioned#2 PEC CAUTION DURING LANDING ROLL THROUGH 50 KTS. POWERPLANT MESSAGE ON ED. RETRIEVED FAULT CODES IAW Q400 AMM 77-31-00-710-803. HAD FAULT CODE 200 AB, 126A, AND 134 (ON #2 SIDE). REPLACED RELAY 6100-3-K2 RJB1 IAW AMM TASK 24-30-16-960-801. OPS TEST GOOD IAW Mar 10, 2021 · N446QX · Bombdr DHC8402SDR QXEA202103090105Power Lever · malfunctioned#2 PEC CAUTION LIGHT ILLUMINATED. REQUIRES TO REPLACE THE PLA QUADRANT, AND K-3 OR K-2 RELAY WITHIN 50 FLT AFTER DISCOVERY OF THE FAULT CODE POSTING PER Q400 MCN 6610594 ISSUE NO. 2. 3/10,RETRIEVED FAULT CODES IAW Q400 AMM 77-31-00-710-803. HAD FAULT CODE 200 Mar 9, 2021 · N446QX · Bombdr DHC8402SDR QXEA2021030900105Power Lever · malfunctioned#2 PEC CAUTION AFTER TOUCHDOWN WHILE DECELERATING THROUGH 60KTS WITH POWERPLANT MESSAGE DISPLAYED ON ED WHILE PULLING INTO THE GATE. REMOVED FROM SERVICE. INTERROGATED CDS FOUND FAULT CODE "200" IN BOTH CHANNELS. C/W Q400 FIM TASK 61-20-05-810-817 STEP 4(E). FMar 9, 2021 · N446QX · Bombdr DHC8402SDR LR7A2021012202773Housing · failedDURING SCHEDULED FLIGHT, NR 1 ENGINE SHUTDOWN FOR OVERSPEED GREATER THAN 102.0%. ENGINE SHUTDOWN AT 1350Z. REMOVED AND REPLACED NR 1 VALVE HOUSING, IAW LAC JOB CARD HN61135. OPERATIONS CHECK NORMAL, IAW LAC JOB CARD HN7101.Jan 22, 2021 · N410LC · Lkheed 382GSDR LR7A2020121302647Housing · out of limitsDURING SCHEDULED FLIGHT, NR 2 ENGINE LOW PROP FLUX OUT OF LIMITS. ENGINE SHUT DOWN, FUEL DUMPED. REPLACED NR 2 PROP PUMP HOUSING.Dec 13, 2020 · N403LC · Lkheed 382G44K30SDR HYIA20201117001Governor · malfunctionedTHE PILOT REPORTED THE LEFT PROPELLER STUCK AT 2500 RPMS AT CRUISE FLIGHT, AND WAS UNABLE TO ADJUST. MAINTENANCE INSPECTED AND FOUND AND ALL COMPONENTS TO BE SECURED AND IN GOOD CONDITION. REMOVED THE LEFT ENGINE PROPELLER GOVERNOR AS A PRECAUTION. PREFORMENov 16, 2020 · N7037E · Cessna 402CSDR HYIA20200904002Control Cable · brokenTHE PILOT REPORTED THAT THE RIGHT PROPELLER RAN AWAY IN FLIGHT, BUT DID NOT OVERSPEED. MAINTENANCE INSPECTED AND FOUND THAT THE PROPELLER CONTROL CABLE HAD BROKEN. REMOVED AND REPLACED RT PROPELLER CONTROL CABLE ASSEMBLY. NO FURTHER DEFECTS NOTED.Sep 2, 2020 · N401TJ · Cessna 402CSDR QXEA2020062400260Transducer · malfunctionedPOWERPLANT MESSAGE ILLUMINATED ON ED DURING CLIMB @ 10'000'. RETURNED TO FIELD. LANDING UNEVENTFUL, REMOVED FROM SERVICE. FAULT CODE IN CDS IS #2 ENGINE CHAN. B, 120, 122, 134. C/W FIM TASK 61-20-03-810-817. FOUND PINS B AND E OPEN ON #2 BETA FEEDBACK TRANSDUCAug 22, 2020 · N405QX · Bombdr DHC8402SDR QXEA2020081000236Pec · malfunctionedUPON C/W FUNCTIONAL TEST OF THE PEC CALIBRATION PROCEDURE PER AMM 61-20-36-720-802, NR2 PROP FAILED TO UNFEATHER PER PARA 4 A3(D). INTERROGATED CDS WITH NO FAULTS FOUND. SUCCESSFULLY PERFORMED FUNCTIONAL TEST FOR THE PEC CALIBRATION PROCEDURE IAW AMM 61-20-36Aug 10, 2020 · N400QX · Bombdr DHC8402SDR MTNA202008210001O-Ring · leakingDURING CRUISE RT TORQUE UNCOMMENCED TORQUE INDICATED 120%, ACCOMPANIED AIRPLANE ASSEMETRY. MAINTENANCE FOUND PROPELLER CONTROL UNIT O-RING LEAKING AT REDUCTION GEAR BOX. REPLACED O-RING OPERATIONALLY CHECKS GOOD. PER PRATT & WHITNEY MM 05-50-00 OVERTORQUE WJul 14, 2020 · N918FX · Aerosp ATR42300SDR MTNA202008172101O-Ring · leakingDURING CRUIS, RIGHT UNCOMMANDED TORQUE INDICATED 120%, ACCOMPANIED BY AIRPLANE ASYMMETRY. REPLACED #2 PROPELLER CONTROL UNIT O-RINGS, OPERATIONALLY CHECKS GOOD. UPON FOQA DOWNLOAD FOUND OVERTORQUE TO HAVE BEEN 146%. REPLACED RH PROPELLER ASSEMBLY FOR INSPECTIOJul 14, 2020 · N918FX · Aerosp ATR42300SDR QXEA2020071400207Unknown · malfunctionedAFTER ENGINE STAR FLOW A/F SELECT DID NOT ILLUMINATED ON ED. REMOVED FROM SERVICE. CYCLED A/C POWER AND FOUND FAULT 100 AT CDS C/W OPERATIONAL TEST OF PROPELLER AUTO FEATHER AND UPTRIM SYSTEM REF Q400 AMM TAK 61-20-00-710-810 SUBTASK 61-20-00-710-018 OPS CK Jul 14, 2020 · N401QX · Bombdr DHC8402SDR QXEA2020070700201Pcu · inoperativeNR 2 PROP DID NOT COMPLETELY FEATHER DURING SHUTDOWN. REMOVED FROM SERVICE. PERFORMED FEATHER CHECK OF NR 2 ENGINE PER AMM TASK 71-00-00-868-819 AND FUNCTIONAL TEST OF NR 2 PROPELLER TIME TO UNFEATHER PER 61-20-00-720-802. NR 2 PROPELLER IS STILL NOT FULLY FJul 7, 2020 · N444QX · Bombdr DHC8402SDR QXEA2020070100199Pec · malfunctionedNR 2 AUTOFEATHER FAILED TO ARM ON TAKEOFF ROLL. TAKEOFF ABORTED 80 KTS GROUNDSPEED REACHED. NO EXCESSIVE BRAKING. REMOVED FROM SERVICE. REPLACED NR 2 PEC. A/C OK FOR CONTINUED SERVICE.Jul 1, 2020 · N439QX · Bombdr DHC8402SDR 2020FA0000537Rod End Bearing · dryPILOT REPORTS PROPELLER CONTROLS DIFFICULT TO MOVE INTO BETA. UPON FURTHER INSPECTION FOUND ENGINE CONTROL RODS NEEDED TO BE CLEANED AND LUBRICATED. ONCE LUBRICATED AIRCRAFT ENGINE RUNS PERFORMED AND NO DEFECTS WERE NOTED. AIRCRAFT OK FOR RETURN TO SERVICE.Jun 2, 2020 · N208AR · Cessna 208BSDR LR7A2020051502254Housing · malfunctionedDURING SCHEDULED FLIGHT #1 ENGINE RPM WENT TO 103%. ENGINE SHUTDOWN / REPLACED OUTBOARD VALVE HOUSING. IAW HN61135. LP 92790.May 13, 2020 · Lkheed 382GSDR QXEA2020022400116Pec · malfunctionedA/F ARM FAILED ON TAKEOFF ROLL, ABORTED TAKEOFF AT 70 KNOTS. A/F SELECT ONLY. RETURNED TO GATE. REMOVED FROM SERVICE. REMOVED & REPLACED #1 PEC IAW Q400 AMM TASK 61-20-36-000/400-801. PERFORMED OPS TEST OF AUTO FEATHER AND UP TRIM SYSTEM IAW Q400 AMM TASK 61-2Feb 22, 2020 · N427QX · Bombdr DHC8402SDR QXEA2020022000111Pec · malfunctionedAUTOFEATHER FAILS TO TEST PROPERLY. #1 TORQUE SHOWS 100% & #2 TORQUE SHOWS 90% WHEN AUTOFEATHER TEST IS ACCOMPLISHED. POWER LEVERS ARE IN THE DISC POSITION AND AMBER FAILED MESSAGES APPEAR ON BOTH #1 & #2 ENGINES. REMOVED FROM SERVICE. REMOVED AND REPLACED #Feb 19, 2020 · N427QX · Bombdr DHC8402SDR 2020FA0000156Switch · failedDURING AN ACCIDENT INVESTIGATION ON A VELOCITY AIRCRAFT (EXPERIMENTAL/AMATEUR BUILT) WITH A IVO PROPELLER (MAGNUM) INSTALLED, IT WAS FOUND THAT THE PITCH OF THE PROPELLER WAS AT A HIGH PITCH SETTING AFTER AN OPERATIONAL CHECK WAS COMPLETED PRIOR TO DEPARTURE. Feb 13, 2020 · N78BM
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