JASC 2420

Service difficulty reports · 1,302

Reports filed under 2420 · AC Generation 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 = '2420'
  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 LR7A2022042603100None · burnedDURING THE CRUISE SEGMENT OF A SCHEDULED FLIGHT, FOUND #2 GENERATOR CONTROL PANEL (GCP) HAD SMOKE COMING FROM IT. PULLED #2 GCP FROM RACK. / DEFERRED #2 ENGINE GENERATOR SYSTEM IAW MEL 24-2(B); CAT C. #2 GENERATOR SYSTEM INOPERATIVE. C/W SP#1 "DRIVE SHAFT" REMApr 26, 2022 · N401LC · Lkheed 382GSDR 2022FA0000223None · noneL GEN DRIVE EICAS ILLUMINATED AFTER TAKE-OFF. PERFORMED QRH PROCEDURE. RETURNED TO LBSF.Apr 19, 2022 · N225AX · Boeing 767200SDR ASAA2022041638037Unknown · inoperative#2 GEN SOURCE OFF ILLUMINATED WHEN TRYING TO SELECT APU GEN ON. GROUNDED - YES. OBSERVED THAT WHEN #2 SOURCE LIGHT REMAINS ON, #2 TRANSFER BUS REMAINS POWERED CORRECTLY FROM ITS OWN SIDE. THIS IS CHECKED BY POSITIONING BUS TRANSFER SWITCH TO OFF, AND NOTHING TApr 16, 2022 · N973AK · Boeing 737SDR CALA2022032300748Idg · noneR GEN DRIVE EICAS DISCONNECTED GEN IDT REQUIREMENTS C/W FOR IDG FEEDER CABLE TORQUE. UPDATED LABOR HOURS. REMOVED AND REPLACED #2 ENG IDG AS PER AMM 24-11-01. NEEDS OPS NEED TO TORQUE IDG FEEDER CABLE ON #2 ENG. TORQUED IDG FEEDER CABLES AS PER AMM 24-11-01 ONMar 22, 2022 · N66051 · Boeing 767*SDR I5PA2022021968801Generator · unserviceableAIRCRAFT LANDED IN KSA WITH APU GENERATOR INOPERATIVE. UNABLE TO MEL DUE TO NO GROUND POWER UNIT AND NO AIRSTART UNIT AVAILABLE IN KOSRAE. AIRCRAFT AOG, SENT RESCUE FLIGHT WITH PARTS AND TECHNICIAN. REMOVED AND REPLACED APU GENERATOR, OPS CHECK NORMAL.Feb 19, 2022 · N688SL · Boeing 757230SDR SIMA20220217003None · noneDECLARED EMERGENCY INBOUND TLH ACCT SPDA FAIL IN FLIGHT EICAS MSGS: PRESN AUTO FAULT, SPDA FAIL, BRK CONTROL FAULT ANNUCIATED, CORRECTED IAW RESET PROCEDURE.-C/A-Feb 17, 2022 · N215NN · Emb ERJ170200LRSDR CALA2022021100361Generator · failedELEC GEN 1 FAULT ON ECAM WITH NUMEROUS FAILURES UPDATED MAA CODE FIX USING VENDOR MAA SCREEN UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. CHECKED. WIRING OF THE DISFeb 10, 2022 · N463UA · Airbus A320232SDR FDEA202202030208Gcu · noneCLIMBING OUT THROUGH 18,000 FT, RECEIVED GEN 1 OFF ALERT. IAW QRH, ATTEMPTED ONE RESET, DID NOT HELP. VOLTS SHOWED 0, HZ 400. THEN GEN 3 OFF ALERT, TRIED RESET, NO HELP. VOLTS 0, HZ 400. THEN TR3 OFF ALERT SHOWED. THEN ELEC ALERTS LEVEL 2 ALERT. DUMPEDFeb 3, 2022 · N643FE · Doug MD11FSDR K11A2022012400111None · nonePROBLEM DESCRIPTION: #3 AC GENERATOR DRIVE OIL LOW PRESSURE LIGHT ILLUMINATED DURING CRUISE. ON APPROACH TO TCL #1 AND #2 A/C GENS. TRIPPED WITH ASSOCIATED UNDER EXCITATION FAULTS, SYSTEMS ONE AND TWO , #2 GB AND GF LIGHTS ILLUMINATED, #1 GB ILLUMINATED. #1 BJan 24, 2022 · N729CK · Boeing 727264SDR ASAA2022010537090Idg · faulty#2 GEN OFF BUS LIGHT ILLUMINATED AFTER START-WOULD NOT EXTINGUISH DESPITE SEVERAL ATTEMPTS TO SELECT #2 GEN ON. GROUNDED - YES. GCU SHOWS IDG FAULT. RESTORED #2 IDG AND OPERATED ENGINE. #2 IDG DOES NOT TAKE THE BUS. ON SHUTDOWN IDG LIGHT ON GCU REMAINS ON. REJan 5, 2022 · N581AS · Boeing 737890SDR ASAA2021122236986Unknown · unknownUPON STARTING APU NORMALLY FOUND APU WOULD NOT ENGAGE TO ELECTRICAL BUSES OVERHEAD SELECTABLE DISPLAY SHOWED NO FREQS, VOLTS, AC AMPS. GROUNDED - YES. PERFORMED APU BITE TEST AND FOUND START CONVERTER UNIT SHOW GEN UNDERVOLTAGE. PARTIALLY RUN B737-800 FIM 49-4Dec 22, 2021 · N586AS · Boeing 737890SDR AALA202112232192Converter · fault messageAIRCRAFT WAS GROUNDED: ON TAKEOFF, RECEIVED LEFT AND RIGHT BACKUP GENERATOR FAULTS. UNABLE TO RESET. DECLARED AN EMERGENCY, RETURNED TO LHR, LANDING SAFELY. REPLACED BACKUP GENERATOR FREQUENCY CONVERTER PER AMM 24-25-09.Dec 22, 2021 · N784AN · Boeing 777223SDR AALA202112030962Gcu · faultyAIRCRAFT WAS GROUNDED: LEFT GENERATOR # 1 FAILED IN FLIGHT, APU WOULD NOT START. EMERGENCY DECLARED, FLIGHT DIVERTED TO CLT LANDING SAFELY. REPLACED IDG (AALA202112031598), GENERATOR CONTROL UNIT (AALA202112030962), AND CONTACTOR 9XU1 (AALA202112038484) PER AMDec 2, 2021 · N741UW · Airbus A319112SDR AALA202112038484Contactor · faultyAIRCRAFT WAS GROUNDED: LEFT GENERATOR # 1 FAILED IN FLIGHT, APU WOULD NOT START. EMERGENCY DECLARED, FLIGHT DIVERTED TO CLT LANDING SAFELY. REPLACED IDG (AALA202112031598), GENERATOR CONTROL UNIT (AALA202112030962), AND CONTACTOR 9XU1 (AALA202112038484) PER AMDec 1, 2021 · N741UW · Airbus A319112SDR DBCA202111120004Inverter · failed1) DURING TAKEOFF ROLL CREW RECEIVED MASTER WARNING. 2) CREW ABORTED TAKEOFF, RETURNED TO RAMP. 3) MAINTENANCE TROUBLESHOT TO #2 INVERTER 4) MAINTENANCE REMOVED AND REPLACED #2 INVERTER 5) OPS CHECKS GOOD.Nov 12, 2021 · N265CM · Cessna 560XLSDR AALA202111159157Converter · failedAIRCRAFT WAS GROUNDED: BACKUP ELECTRICAL SYSTEM FAILED ON ETOPS ROUTE, FLIGHT DIVERTED TO LAX. **SUPPLEMENTAL REPORT: REPLACED BACKUP GENERATOR CONVERTER WITH SERVICEABLE UNIT IAW AMM 24-25-09, OPS CHECK GOOD.** (CLOSED)Nov 7, 2021 · N786AN · Boeing 777223SDR AALA202111119157None · noneAIRCRAFT WAS NOT GROUNDED: BACKUP ELECTRICAL SYSTEM FAILED ON ETOPS ROUTE, FLIGHT DIVERTED TO LAX. **SUPPLEMENTAL REPORT WILL BE SUBMITTED.** (OPEN)Nov 7, 2021 · N786AN · Boeing 777223SDR DALA2021102806678None · noneSHIP 5635 -ATB- RIGHT HAND ELECTRICAL BUSS FAILED, RAN QRH, WOULD NOT RESET AND REMAINED ISOLATED IN FLIGHT. / CORRECTIVE ACTION: T/S AND FOUND RT GCU UNSECURE, RE-SECURED RT GCU AND INSPECTED KNURL KNOBS, THREADS OK. RAN ENGINE, OPS NORMAL, APU POWER SYSTEM OOct 27, 2021 · N535US · Boeing 757251SDR NACA2021101000001Control Unit · failedDISCREPANCY: LEFT GENERATOR OFF AND ON INTERMITTENTLY DURING TAXI. CORRECTIVE ACTION: REPLACED LEFT GCU IAW AMM 24-22-02. OPS CHECK GOOD, NO DEFECTS NOTED, ALSO CLEANED IDG OIL PLUG.Oct 10, 2021 · N321CM · Boeing 767323SDR NACA2021100800001Idg · failedDISCREPANCY: LEFT GENERATOR OFF IN FLIGHT. CORRECTIVE ACTION: DEFERRED PER MEL 24-00-01-01 CAT B 1720Z ON 8-OCT. REPLACED LEFT IDG REF B767 24-11-01 MM, LEAK AND OPS CHECK GOOD. ETOPS GROUND VERIFICATION COMPLIED WITH, CLEARED MEL 24-00-01Oct 8, 2021 · N321CM · Boeing 767323SDR AALA202109286174Buss · burnedAIRCRAFT WAS GROUNDED: ELECTRICAL ISSUE WITH TR2 FAIL, LEFT PUMP FAIL, PACK FAIL, AND BATTERY DISCHARGE LIGHT; FLIGHT DECLARED EMERGENCY AND LANDED WITHOUT FURTHER INCIDENT. REPLACED P92 RIGID BUS IAW B737NG AMM TASK 24-21-22-000/400-801, OPS CHECK GOOD.Sep 24, 2021 · N955AN · Boeing 737823SDR HNAA2021081900388Dau · faultedLOSS OF 115VAC BUSS IN FLIGHT WITH LOSS OF FMS1, PFD1, MFD2. R & R NR 1 DAU IAW AMM 34-41-01.OPS CHECK GOOD AT THIS TIME.INSPECTED ELECTRICAL CONNECTIONS GOING TO AVIONICS MASTER 1 NO DEFECTS NOTED AT THIS TIME.PERFORMED OPS CHECK OF AVIONICS MASTER SYSTEM IAug 18, 2021 · N641AE · Emb EMB145LRSDR QR9R20210616001Transformer · failedGENERATOR SPLIT GREATER THAN 10 AMPS. INDICATIONS WERE NORMAL AT IDLE, THEN ONCE AT FLY #1 GENERATOR SHOWED 10 AMPS WHILE #2 SHOWED 75 AMPS. AVIONICS RESET DID NOT RESOLVE ISSUE. WHILE TROUBLESHOOTING AIRCRAFT, DETECTED FLUCTUATION ON #1 ENGINE OF 5 AMPS TO 35Jun 16, 2021 · Bolkms BK117C2SDR AMCR20210318002Alternator · meltedBEFORE FLIGHT, ON INITIAL ENGINE RUNS, IT WAS NOTICED THAT THE LEFT ALTERNATOR FAIL CAS MESSAGE WAS ILLUMINATED. UPON INSPECTION THE CREW REPORTED SMELLING SMOKE FUMES.THE ALTERNATOR WAS REMOVED AND REVEALED THAT AN INTERNAL SHORT HAD OCCURRED CAUSING THE FAILMar 9, 2021 · N257DV · Cessna 525CSDR A6WA202012297499Gcu · malfunctionedWHILE OPERATING WITH AN IDG 2 INOPERABLE MEL APPLIED, APU GCU DISABLED AND APU GEN WAS NO LONGER TO POWER AC BUS 2. SINGLE GEN OPERATIONS. ELECTED TO AIR RETRUN. APU GCU RE-ENABLED ITSELF PRIOR TO LANDING. AIRCRAFT REMOVED FROM SERVICE. R & R APU GCU, IAWDec 26, 2020 · N442AW · Cndair CL6002B19SDR 2020FA0000555Gcu · over voltageDURING ENGINE START AND TAXI, THE RIGHT NR 2 GENERATOR, SWITCH BREAKER TRIPPED, INDICATING A SYSTEM OVER-VOLTAGE. ONE RESET ATTEMPT RESULTED IN THE SAME OVER-VOLTAGE. THE AIRCRAFT WAS SHUT DOWN AND REPAIRS WERE MADE. THIS REPAIRED PART FROM FALCON REVEALED Dec 17, 2020 · N200CR · Amd FALCON2000EXSDR 2020FA0000554Gcu · low voltageDURING CRUISE FLIGHT AT FL400, WE EXPERIENCED A NR 2 ENGINE GENERATOR CONTROL UNIT "UNDER-VOLTAGE" INDICATION. THE SYSTEM AUTOMATICALLY COMPLETED A LOAD SHED OF NON-ESSENTIAL ITEMS. WE FOLLOWED THE CHECKLIST, STARTED THE APU, AND CONTINUED OUR TRIP TO THE DENov 27, 2020 · N200CR · Amd FALCON2000EXSDR IPXA2020110962173Sensing Element · malfunctionedINSPECTION TYPE: N/A DIVERSION CAPT INSTRUMENT XFER STATUS MESSAGE IN FLIGHT INTERMITTENT. C/W FIM 24-22-00-815-8OZ. REMOVED & REPLACED CAPT INSTRUMENT BUS VOLTAGE SENSING UNIT, PER AMM 24-51-08. OPERATIONS CHECK GOOD.Nov 6, 2020 · N416UP · Boeing 75724APFSDR A6WA202010067306Adg · unwanted deployADG DEPLOYED IN FLIGHT AT APPROX 280 KTS. ADG WAS DEPLOYED FOR 72 MINS. AC ESSENTIAL BUS WAS NEVER DE-POWERED. AIRCRAFT REMOVED FROM SERVICE. COMPLIED WITH SUP 16-172, TROUBLESHOT, PER FIM 24-23-00, NO FAULT FOUND. PERFORMED SPECIAL VISUAL INSPECTION OF AOct 3, 2020 · N453AW · Cndair CL6002B19SDR UIEA2020100392133Transformer · shortedREPEAT WRITE-UP: DESCENDING THROUGH FL 180 AFTER TURNING WING AND LOGO LIGHTS ON, "RT AC BUS OFF" EICAS MESSAGE. RAN QRH, RT AC BUS RESTORED. ON FINAL APPROACH TURNED WING AND LOGO LIGHTS ON AGAIN ANOTHER RT AC BUS FAILURE. FOUND NUMEROUS WIRES CHAFED AT RTSep 29, 2020 · N1409A · Boeing 767306SDR UIEA2020100132138Buss · malfunctionedPASSING 18,000 AND AFTER SELECTING LANDING LIGHTS RECEIVED "RT AC BUS "OFF" EICAS. AFTER QRH, WE COULD NOT RESTORE RT AC BUS AND ACCEPTED LANDING CLEARANCE DUE TO LAND AT NEAREST SUITABLE AIRCRAFT CONFIGURED WITHOUT PROBLEM AND LANDING ROLLOUT AND TAXI UNEVENSep 28, 2020 · N1409A · Boeing 767306SDR UIEA2020091081961Generator · malfunctionedTRU STATUS MSG DISPLAYED. TRANSFERRED TO MDDR 134008, IAW MEL 24-00-02B, CAT B. REMOVED AND REPLACED APU GENERATOR, IAW AMM 24-21-01. OPS CHECK NORMAL AT THIS TIME, STATUS MSG NOT PRESENT. THIS CLEARS MDDR 134008. MCC NOTIFIED. PLACARD REMOVED.Sep 7, 2020 · N1399A · Boeing 767306SDR UIEA2020081741772Gcu · faultedR AC BUS OFF EICAS MSG AT TOUCHDOWN PERFORMED BPCU BITE TEST IAW FIM 24-20 FT 801. FOUND RH GCU AT FAULT, REPLACED GCU IAW AMM 24-22-02. BITE TEST NO FAULTS. ENG RUN CKS GOOD IAW AMM 71-00-00.Aug 14, 2020 · N1409A · Boeing 767306SDR UIEA2020070201474Unknown · malfunctionedL AC BUS OFF AFTER ENG SHUTDOWN. PERFORMED BPCU BITE IAW FIM 24-20 TASK 801. NO FAULTS.Jul 1, 2020 · N1489A · Boeing 76731KSDR UIEA2020070101466Buss · malfunctionedUPON ARRIVAL IN THE FLIGHT DECK, FOUND BOTH CAPTAIN AND FO SIDE PFD FAILED, UPPER EICAS SCREEN WAS FAILED AS WELL. RESET APU BUS IAW AMM 24-21-00, OPS CHECKED NORMAL AT THE PRESENT TIME.Jun 30, 2020 · N1229A · Boeing 767306SDR FDEA2020070671373Relay · failedAT 6000' ON DESCENT WITH AUTOPILOT ENGAGED GOT SEVERAL EICAS INDICATIONS ON NOTICEABLE "THUMP" EICAS AND STATUS MSG INCLUDED : ALT CALLOUTS, TERR POSS, SATCOM, NO LAND 3 STATUS PAGE SATCOM SYSTEM, AFDC-L, NO LAND 3 PACK L AND CAPT FSS LIGHT CAME ON FOR 2 SECOJun 27, 2020 · N854FD · Boeing 777FS2SDR UIEA2020062401347Unknown · malfunctionedRT GEN OFF EICAS PERFORMED BITE OF BPCU IAW FIM 24-20 F/T 801 FLUCTUATING F/T DP TRIP; GEN/ FDR PER TABLE 102. CHECKED IDG WINDING READS PROPER RESISTANCE PER TABLE 102. CHECKED GCU AND PERFORMED ENG RUN IAW 71-00-00. OPS NORMAL. RESECURED GCU PER 24-27-02Jun 23, 2020 · N1709A · Boeing 767375SDR UIEA2020042400820Unknown · malfunctionedR BUS FAILED DURING DESCENT.(<P>PERFORMED T/S PER FIM 24-20 FT 801 AND BITE CHK BPCU AND FOUND NO FAULTS, SYS CHKS OK.</P>)Apr 22, 2020 · N1409A · Boeing 767306SDR FDEA202006120736Control Unit · malfunctionedGEN 3 ON MEL. AT GEAR DOWN GOT "GEN 1 OFF" A/C WENT ON EMERGENCY POWER LOST ALL ASSOCIATED SYSTEMS. GEN 1 CAME BACK ONLINE EXITING THE RUNWAY. PERFORMED T/S AND REPL EPCU IAW AMM 24-08-01-4 REF WRI: 24-00 4955.Apr 12, 2020 · N592FE · Doug MD11FSDR A6WA202021247160Controller · malfunctionedSHORTLY AFTER TAKE OFF, THE AIRCRAFT'S AIR DRIVEN GENERATOR DEPLOYED WITHOUT INPUT FROM THE CREW. THE FLIGHT AIR RETURNED TO RIC AS A RESULT. AIRCRAFT REMOVED FROM SERVICE C/W ALT INSP AFTER ADG DEPLOYMENT DURING UNSCHEDULE MX CHECK IAW AWAC SUP 16-172. Feb 9, 2020 · N419AW · Cndair CL6002B19SDR GTIA2020010634905Circuit Breaker · trippedC/B AB11 BUS 1 103XP SPLY POPPED-PERFORMED OPS CHECK OF AC MAIN GENERATOR IAW AMM 24-20-00, OPS CHECK GOOD. THEN PERFORMED OPS TEST OF AC ESSENTIAL - GENERATION SWITCHING IAW AMM 24-25-00-710-001-A. OPS CHECK GOOD. PERFORMED ENGINE RUN PF BOTH ENGINES IAW AMM Jan 3, 2020 · N668NK · Airbus A321231SDR 2019FA0000415Brush Block · wrong partALTERNATOR RECEIVED FOR REPAIR OF DRIVE END THREADED BOSS. INSPECTION OF UNIT WRONG (NON FAA/PMA) BRUSH BLOCK ASSEMBLY, RECTIFIER ASSEMBLY AND STATER ASSEMBLY INSTALLED. 10 HOURS ESTIMATED FROM FIELD REPAIR AT ENGINE MAJOR OVERHAUL.Dec 19, 2019 · Beech B60SDR AALA2019121769002Circuit Card · malfunctionedAIRCRAFT WAS GROUNDED: PILOT REPORTS MULTIPLE STS MSGS IN CRZ, FLAP EMCU PWR, CRUISE FLAPS DISAGREE, FLAPS SECONDARY FAIL, ELEC P200 PANEL, CARGO FWD EXHAUST FAN, INTERGRATED CLG RECIRC AIR . MAINTENANCE REPORTS MSG 24-20623 P200 ELCU (P) CARD M2409018 SLOT PDec 14, 2019 · N820AL · Boeing 7879SDR ASAA2019120971532Circuit Breaker · trippedENG #1 LIGHT ON, ENG #2 DRIVE LIGHT OFF WITH ENGINES SHUT DOWN, BOTH FANS STATIONARY. LIGHTS CHECK GOOD. GROUNDED - YES. FOUND C/B GCU 2 F11 ON P6-4 PANEL POPPED. C/B EXAMINED, NO EVIDENCE OF ARCING OR BURNT CONTACTS. DISCONNECTED DP1206 ON IDG AND JUMPED PIN Dec 7, 2019 · N442AS · Boeing 737990ERSDR VNAA2019102321103Flange · malfunctionedDURING OVERNIGHT MX IT WAS FOUND THAT THE AIR DRIVEN GENERATOR WOULD NOT LOCK IN DEPLOYED POSITION. MX FOUND SEVERAL MISSING WASHERS. MX REPLACED THE WASHERS AND ADJUSTED THE DOWNLOCK FLANG AND GROUND FLANGE CLEARANCE AND OPERATIONS CHECK IT GOOD.Oct 22, 2019 · N549NN · Cndair CL6002D24SDR ASAA2019092030767Unknown · malfunctionedAFTER ENGINE START #1 GENERATOR WOULD NOT CONNECT TO BUS. SOURCE OFF LIGHT WAS ILLUMINATED AFTER ATTEMPTING TO CONNECT. GROUNDED - YES. RAN #1 ENGINE. GENERATOR OPS TEST NORMAL PER AMM 24-11-00-700-803. SUCCESSFUL GROUND VERIFICATION WITH NO HISTORY. OK FOR SESep 20, 2019 · N512AS · Boeing 737890SDR FDEA201909182281Relay · unknownLEVEL 1 EMERGENCY PWR ON IN FLIGHT, COMPLIED WITH QRH, ALERT REMAINED ON. DEPLOYED ADG PER QRH WITH MOCC CONCURRENCE CHECKED ASSOCIATED WIRING FROM OVERHEAD ELECTRICAL PANEL TO EPCU AND FROM R2-17 TO R2-5411. NO DEFECTS NOTED. REPLACED R2-17 AND R2-5411. PERFOSep 18, 2019 · N595FE · Doug MD11FSDR ASAA2019090830668Unknown · malfunctionedAPU GEN BUSES WILL NOT COME ON LINE WHEN SELECTED. GROUNDED - YES. PERFORMED OPS TEST FOR THE AC GENERATION AND CONTROL SYSTEM IAW AMM 24-24-00-700-803 STEPS 2A THROUGH 2E(Z)(4). BOTH APU BUS TIES OPERATE NORMALLY. NO FAULTS NOTED. NO CHANGES TO AIRCRAFT CONFISep 8, 2019 · N440AS · Boeing 737990ERSDR UIEA201908215228Tru · arced#4 AC DISTRIBUTION CB TRIPPED AFTER TAKEOFF, 500'. MULTIPLE MALFUNCTIONS. FOUND SIGNS OF ELECTRICAL ARCING AT THE #4 AC DISTRIBUTION CB AND #4 TR/CB. REMOVED AND REPLACED #4 AC DISTRIBUTION C/B AND TR C/B REF AMM 24-22-02 AND SWPM 20-30-00. ALSO REMOVED AND RAug 19, 2019 · N747BC · Boeing 7474J6SDR UIEA2019081905214Circuit Breaker · trippedAC DIST CB 3C4 TRIPPED IN FLIGHT, MULTIPLE MALFUNCTIONS. AFTER TURNING OFF AC POWER, CLEANED AND INSPECTED INSIDE OF P6 PANEL AREA PER AMM 20-60-02-04. AFTER TURNING ON AC POWER, CYCLED AC DISTRIBUTION CB ON P6 3C4. NO CB'S POP-UP. AC GENERATION OPS TEST C/OUAug 18, 2019 · N747BC · Boeing 7474J6
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