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.
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
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 K11A2019080763101Generator · malfunctionedON TAKEOFF ROLL NR 1 GENERATOR WENT OFF LINE, REJECTED TAKEOFF. R&R THE NR 1 GENERATOR, NR 1 CSD, IAW AMM 24-21-11, AND 24-11-11. OPS AND LEAK CHECK GOOD IAW AMM 24-11-11 AND AMM 71-00.SDR CA190809019Warning Message · illuminated(CAN) L GEN FAIL CAUTION ON THE DOWNWIND LEG FOR AN LPV APPROACH, WE GOT THE L GEN FAIL CAUTION. ECL PERFORMED AND APU STARTED. NORMAL LANDING. ON GND WO ISSUED AND MCC INFORMED. (TC# 20190809019)SDR CA190801008Contactor · damaged(CAN) ON AC 9193, CUSTOMER FOUND DURING LH ENGINE SHUT DOWN AC BUS 1 SHED. PER CAIMS READ OUT, THEY GET THE FOLLOWING MESSAGE: ACPC APULC-EPLC CONTACTOR-K1 FAILED. DURING FURTHER TS, THEY FOUND ON THE CAIMS AC SYNOPTIC DATA - ACPC B THE AC BUS 1 WAS STILL CONSDR CA190802003Frequency Gen · malfunctioned(CAN) #3 VFG S/N 6553 FAILURE IN FLIGHT. POST FLIGHT INSPECTION REVEALED THAT THE VFG HOUSING HAS FRACTURED AT THE VFG OIL PUMP FLANGE. (TC# 20190802003)SDR ASAA2019072230159Unknown · malfunctionedAPU ELECTRIC POWER INOP. GROUNDED - YES. PERFORMED OPERATIONAL TEST FOR AC GENERATION AND CONTROL SYSTEM REF AMM 24-21-00-700-803. OPS CKS GOOD NO FAULTS. VISUALLY EXAMINED (GVI) OF APU COMPARTMENT AND HARNESSES. NO FAULTS FOUND. PERFORMED APU BITE LOOKING FORSDR AALA2019062549062Contactor · faultyAIRCRAFT WAS GROUNDED: FLIGHT DIVERTED TO ORD ON ACCOUNT OF ELECTRICAL SYSTEM ISSUE. EMERGENCY DECLARED. FLIGHT NOT OVERWEIGHT AND LANDED WITHOUT INCIDENT. ALSO, APU AUTO-SHUTDOWN AFTER APPROX. 10 MINUTES OF OPERATION. MAINTENANCE TROUBLESHOT IAW TSM 24-00-00-SDR CA190620007Gcu · malfunctioned(CAN) DURING ENG START : `ELECTRICAL FAULT` BLUE ADVISORY WITH ASSOCIATED INFO `24 ELECTRICAL FAULT - GEN INOP` AIRCRAFT BACK TO STAND CB RESET R GCU AND POWER REBOOT , ENG RUN PERFORMED WITHOUT FINDINGS AIRCRAFT BACK IN SERVICE (TC# 20190620007)SDR IPXA2019053142670Control Unit · malfunctionedINSPECTION TYPE:N/A **AIR TURN BACK** WHILE IN CRUISE, WE GOT MULTIPLE LEVEL 1 ALERTS GEN 1,2,3 OFF THAT LASTED FOR ONE SECOND THEN WOULD GO BACK NORMAL. WE CYCLED THE SYSTEM CONTROLLER WITH NO CHANGE. R/R EPCU ASSY AS PER AMM 24-08-01/401. PERFORMED EPCU RTSSDR CA190522003Contactor · failed(CAN) BA SER CASE : 45106 SER - ETOPS - AFTER ENG START EPC 3 INOP (RETURN TO GATE) AFTER ENG START ADVISORY ELECTRICAL FAULT EPC 3 INOP/00:00 RETURN TO GATE RTM CAPTURED 4 EVENT. FC 2423F0006 POWER DOWN AND UP DID CLEAR THE FAULT BUT CAME BACK AFTER ENSDR UIEA2019040503811Motor · deactivatedHYDRAULIC MOTOR GENERATOR INOPERATIVE. HMG WAS DEACTIVATED DUE TO R ENGINE ANTI-ICE VALVE INOPERATIVE: REACTIVATED HMG, OPS CHECK OK.SDR UIEA2019032503657Control Panel · defectiveLT UTILITY LIGHT INOP (<P>REMOVED AND REPLACED ELECTRICAL SYSTEM CONTROL PANEL IAW AMM 24-22-01 OK </P>)SDR ASAA2019031728640Unknown · malfunctionedON TAXI OUT APU KICKED OFFLINE AND BOTH ENGINE CONTROL LIGHTS ILLUMINATED. GROUNDED - YES. APU PWR KICKED OFF LINE PRIOR TO ENG ELEC SYS PWR UP. POWERED DOWN ALL SYSTEMS AND REBOOTED SHIPS POWER- ALL FAULTS CLEARED. ACFT CLEAR FOR SERVICE REF AMM 71-00-00.SDR DALA2019031401674Relay · faultyIN FLT, RIGHT GENERATOR BUS INTERMITTENTLY COMES ON AND OFF LINE. GENERATOR VOLTS AND FREQS WERE NORMAL. PER MCC REQUEST RT GEN TURNED OFF. APU STARTED, APU GEN DID NOT PICK UP RIGHT BUS. EPCU BITE SHOWS "RIGHT CONVERTER EU FAILED" WITH MESSAGE "RT CONV EU CB-SDR DALA2019031501705Unknown · malfunctionedAT GEAR UP THE OAP ANNUN WINDSHEAR INOP THE FOS PFD ND AND ALTIMETER FAILED INTERMITTENTLY. THE CAPTS PFD AND ND FAILED INTERMITTENTLY AND THE OAP ANN WINSHIELD OVERHEAT. MULTIPLE ELECTRICAL ANOMALIES OCCURRED EVEN AFTER APU START. THE CABIN INTERCOM LIGHTS WESDR FDEA201903120575Unknown · malfunctionedAT FL370, THE ACFT SUFFERED SOME SORT OF ELECTRICAL MALFUNCTION. WITH THE FOL INDICATIONS: "EICAS DISPLAY" L HYD ELEC PUMP'" C HYD ELEC 2", RT FMC FAILURE, RT IRS INTERMITTENT, "ON DC" LIGHT, FLASHING COCKPIT LIGHTS, ALTITUDE SPLIT OF 800'. STARTED APU WITSDR CA190311006Contactor · faulted(CAN) ON A/C WAKE UP , A/C HAD SOME PROBLEM WITH EMERGENCY ELECTRICAL POWER. RAT RLC (RAT LINE CONTACTOR) FOUND FAULTY , REMOVED AND REPLACED , A/C RETURNED TO SERVICE.SDR FDEA201901110090Relay · failedWHEN TURNING 15 MILES FINAL FOR LANDING, WE HAD LIGHTS FLICKER AND A CLICK, THEN RECEIVED AN ''EMER POWER ON'' LEVEL 1 INDICATION. QRH RECOMMENDED SWITCHING EMER PWR SWITCH TO OFF THEN BACK ON IF NO OTHER INDICATIONS. WE HAD NO OTHER INDICATIONS SO WE SWITCHEDSDR ASAA2018112627122Not Reported · malfunctionedON GROUND STARTED APU NORMAL INDICATIONS BUT NO BLUE LIGHT APU GEN OFF BUS AND WOULD NOT ACCEPT LOAD. ONCE ENGINES SHUT DOWN, IT ACCEPTED LOAD WITH BLUE LT ON. THEN EXTINGUISHED, OPS NORMAL. GROUNDED - YES. APU GENERATOR SYSTEM IS INOP. GCU SHOWS NO FAULTS DURSDR UIEA2018112602697Switch · abnormalUTILITY BUS WILL NOT COME ON LINE(<P>RESET LEFT AND RIGHT UTILITY BUS SHEDDING SWITCHES NO OTHER FAULTS NOTED MM REF 24-22-00 AND 24-11-00</P>)SDR ASAA2018112107025Warning Light · false activationAFTER APU SHUTDOWN AND EXTERNAL POWER APPLICATION AVIONICS COOLING HORN SOUNDED. GROUNDED - YES. CONFIRMED DEFECT AND ALSO OBSERVED RIGHT "TRANSFER BUS OFF" LIGHT ILLUMINATED. FOUND BUS POWER CONTROL UNIT WITH A "EPDIST/BUS FAULT" LIGHT. PER B737-900 FIM 24-41SDR ASAA2018100326351Not Reported · malfunctionedNR 1 GENERATOR ONLY POWERS HALF THE BUSES WHEN PUT ONLINE. GROUNDED - YES. BITE TESTED NR 1 GCU REF FIM 24-21-00-810-801. NO FAULTS. BITE TESTED BPCU REF FIM 24-41 TASK 801. NO FAULTS. RAN NR 1 ENGINE AND APPLIED POWER WITH NR 1 ENG GEN ALL BUSES POWERED NORMASDR KC8A201808282718Relay · inoperativeLOSS OF AUX BUSS ELECTRICAL POWER. LANDING GEAR EXTENDED USING EMERGENCY PROCEDURES. FOUND AUX BUSS RELAY, 9-P, FAILED OPEN RESULTING IN AUX BUSS POWER LOSS. REPLACED THE RELAY, PERFORMED RETRACTION AND SYSTEMS CHECKS IAW THE MAINTENANCE MANUAL.SDR ASAA2018072525536Warning System · false activationDURING CRUISE NR 2 SOURCE OFF LIGHT ILLUMINATED. PERFORMED QRH, STARTED APU AND BROUGHT ON LINE. GROUNDED - YES. PERFORMED SOURCE OFF LT ILLUMINATE-FAULT ISOLATION IAW FIM 24-21 TASK 823, ALL CKS NORMAL, NO FAULTS NOTED.SDR P5CA2018060100081Control Unit · failedDURING PRE-DEPARTURE, FOUND THE LT UTILITY BUSS INOPERATIVE LIGHT ILLUMINATED. REMOVED AND REPLACED THE BUSS POWER CONTROL UNIT IAW AMM 24-22-00. OPS CHECKED GOOD IAW AMM 24-22-00, OK FOR SERVICE.SDR ASAA2018052024745Module · defectiveA/C WILL NOT ACCEPT GROUND POWER. GROUNDED - YES. CONFIRMED FAULT. FOUND GND POWER SWITCH NOT MAKING CONTACT UPON ON POSITION (BROKEN). SWITCH PN 64AT34-7E, IPC 24-21-51-02 DOES NOT SHOW IN TRAX. NOT AVAILABLE. R&R POWER GENERATION MODULE (P5-4) REF AMM 24-21-SDR AALA201804305010Circuit Breaker · arcedPOPPING SOUND, ARCING ON 49 CIRCUIT BREAKER PANEL, AND SOMETHING FELL TO GROUND. NO ODOR OBSERVED. MAINTENANCE INSPECTED 49VU CIRCUIT BREAKER PANEL IAW AMM 24-00-00, NO ARCING OR EVIDENCE OF ARCING FOUND. CHECKED ALL LIGHTS AND SWITCHES ON OVERHEAD PANEL ANDSDR UIEA2018041200693Idg · inoperativeRIGHT IDG INOPERATIVE. REMOVED AND REPLACED THE RT IDG IAW AMM 24-11-01, OPS CHECKED GOOD.SDR ASAA2018021323541Unknown · malfunctionedAT 27,000 FT ON DESCENT, TURNED ON ENGINE ANTI-ICE- GOT NR 2 TRANSFER BUS OFF LITE AND SOURCE OFF LITE, NO BLUE GEN BUS OFF LITE. NO CB'S OUT. DID QRH- STARTED APU & PUT ON RIGHT SIDE PER QRH. SOURCE OFF BUS WENT OUT- STILL HAD TRANSFER BUS OFF LITE. PUT GRD PSDR A6WA2018012445588Control Unit · malfunctionedAFTER TAKEOFF, THE AIR DRIVEN GENERATOR DEPLOYED UNCOMMANDED. COMPLIED WITH QRH, GENERATORS DID NOT PICK UP THE LOAD, AND POWER TRANSFER OVERRIDE SWITCH DID NOT WORK. DIVERTED. THE GENERATOR TRANSFER OCCURRED BELOW 80 KNOTS AFTER LANDING. REPLACED ADG AUTOSDR AALA201801229029Circuit Breaker · poppedAIRCRAFT WAS NOT GROUNDED. ON ARRIVAL LOST TOP EICAS, LT AND CTR AP, TERRAIN, GRWS, TCAS, AND FLAPS WOULD NOT EXTEND. FLIGHT DECLARED AN EMERGENCY AND PERFORMED GO AROUND. THE CREW ELECTRICALLY EXTENDED THE FLAPS. THE FLIGHT LANDED ON THE NEXT ATTEMPT WITHOSDR YENA201801040004Idg · failedRETURNED TO FIELD AFTER TAKE OFF DUE TO THE NR 1 GENERATOR WENT INOPERATIVE. RESET UNSUCCESSFUL. PERFORMED TSM 24-26-00-810-868-A. R & R THE NR 1 GCU IAW 24-22-34. R & R THE NR 1 IDG IAW AMM 24-21-51. PERFORMED ENGINE RUNS. NO FAULTS NOTED.SDR YENA201801040003Gcu · failedRETURNED TO FIELD AFTER TAKE OFF FOR THE NR 1 GENERATOR WENT INOPERATIVE. RESET UNSUCCESSFUL. PERFORMED TSM 24-26-00-810-868-A. R & R THE NR 1 GCU IAW 24-22-34. R & R THE NR 1 IDG IAW AMM 24-21-51. PERFORMED ENGINE RUNS. NO FAULTS NOTED.SDR IPXA2017121324494Relay · inoperativeINSPECTION TYPE:N/AATB - AT TOP OF CLIMB FIRST OSERVED LVL 1 "BUS DC 3 OFF" FOLLOWED BY LVL 2" FCC 2A DATA FAULT" AND LVL1 ENG3 FADEC FAULT AND A ICE SENSOR FAIL AND SEL LSAS RIBOFF. YAW DMP UPR B OFF, A/P SINGLER & R RELAY R2 51 53 AND RCEB B1- 894 IAW MD11 MSDR ASAA2017120522778Circuit Breaker · stuck#1 TRANSFER BUS OFF LIGHT ILLUMINATED WHEN POWER WAS TRANSFERRED FROM ENG DRIVEN GENERATOR TO APU GEN WHEN TAXING IN POST FLIGHT SAME ISSUE APPEARED WHEN GRD POWER WAS APPLIED TO THE JET. GROUNDED - YES. PERFORMED B737-900 FIM TASK 24-21 TASK 822 FOUND BUS TIESDR ASAA2017100822149Warning Light · false activationON VECTORS FOR APPROACH, NR 1 SOURCE OFF LIGHT ILLUMINATED. FOLLOWED QRH AND PUT APU ONLINE. ACFT GROUNDED. PERFORMED THE INSTRUMENT LANDING OPERATIONAL TEST IAW AMM 34-31-00-710-801 AND THE AIR DATA REFERENCE SYSTEM SELECT OPERATIONAL TEST IAW AMM 34-21-0SDR SAJF2017091806032Control Unit · failedSTATUS MESSAGE FOR STBY BUS APU. CMC FOUND MESSAGE 24727 IAW FIM 24-60 TASK 809, REV 90 FOR TROUBLESHOOTING, J4 TO BCU2 WIRING CHECKED NORMAL. SWAPPED BCU 1 AND BCU 2 AND FOUND BCU 2 FUNCTION BAD. REPLACED THE BCU-2 IAW AMM 24-23-01, REV 90. PERFORMED EPGSSDR AXSA2017080200001Diode · burned outPILOT REPORTED WHITE SMOKE APPEARED FROM UNDER DASH BY BRAKE HANDLE FOR 3 SECONDS JUST BEFORE SHUTDOWN. THE ISSUE WAS TROUBLESHOT TO FAILED DIODES IN THE VOLTMETER CIRCUIT. THE DIODES WERE REPLACED IAW THE WIRING DIAGRAM MANUAL, SEC 2. THE OPERATIONAL CHECK SDR ASAA2017071221351Oil Cooler · leakingNR 1 ENGINE IDG AIR/OIL COOLER LEAKING. ACFT GROUNDED. REPLACED THE OIL COOLER IAW AMM 24-11-21. LEAK CHECKED GOOD.SDR ASAA2017062721207Unknown · malfunctionedGPU RAN OUT OF FUEL AND A/C LOST POWER AFTER STARTING APU. BLUE APU GEN OFF BUS ILLUMINATED BUT NO VOLTS OR FREQUENCY ON ELECTRICAL PANEL. NO OTHER APU ANNUNCIATOR LIGHTS ILLUMINATED. GROUNDED - YES. REF FIM TASK 24-21 TASK 820. APU GENERATOR CAME ON LINE WITHSDR 9EKA20170616003Relay · failedWHILE ON APPROACH FOR A SLING LOAD PICK THE AIRCRAFT EXPERIENCED A DUAL ALTERNATOR FAILURE. THE NR 2 TRANSFORMER RECTIFIER UNIT WAS INDICATING IT REMAINED ONLINE. THE NR 1 ALTERNATOR DISPLAYED 116 VAC ON ALL PHASES. "ELEC" AND "NAV" LIGHTS ON THE 7 ALPHA PANSDR HNAA2017052900195Monitor · malfunctionedAC VERIABLE FREQ IS NOT SHOWING ANY LOADS ON A B OR C PHASES ON THE LEFT OR RIGHT. R & R THE AC POWER MONITOR. GROUND RAN AIRCRAFT OPS CHECK GOOD AT THIS TIME. IAW AMM 24-21-05.SDR ASAA2017052020831Cover · malfunctionedBATTERY SWITCH COVER WILL NOT STAY CLOSED. ACFT GROUNDED. REMOVED & REPLACED THE BATTERY POWER MODULE IAW AMM 24-21-53. OPS CHECKED GOOD. GROUND VERIFICATION COMPLETE.SDR P5CA2017050800128Valve · inoperativeDURING HMG OP TEST, FOUND HMG VALVE UNABLE TO CLOSE WHEN TEST SWITCH RETURN TO NORMAL POSITION. REMOVED AND REPLACED HMG VALVE IAW AMM 24-25-03, REV 120. CARRIED OUT HMG SYSTEM OPS TEST IAW AMM 24-25-00, REV 120, FOUND SATISFACTORY.SDR ASAA2017050420634Warning System · malfunctionedGEN NR 1 BUS FAIL ON NR 1 ENG START UP. GROUNDED - YES. ACCOMP NR 1 GCU BITE FOUND FAULT GCU/ APB FAULT RESET NR 1 GCU. OPEN P91 AND ACCOMP GVI NO DEFECTS OF GCB NR 1 (C801) CLOSED P91. CYCLED C/B AT P6-4 F-10. ACCOMP OPS TEST FOR A/C GENERATION AND CONTROL SYSDR SIMA20170404001Mau · malfunctionedAFTER LANDING, SHUT THE NR 2 ENGINE DOWN DURING TAXI IN, A MAJOR MALFUNCTION OCCURED. LOST BRAKES, NOSE WHEEL STEERING, ADS2, RA.NAV 2, AND HAD NUMEROUS EICAS MESSAGES. MOST SYSTEMS RESET THEMSELVES. DOWNLOADED CMC, FOUND MAU2A, MAU2B, 3A & 3B MOMENTARILSDR COEA2017032101805Generator · failedCREW RECEIVED A NR 1 ACW FAULT DURING CLIMB OUT. ELECTED TO RETURN TO DEPARTURE, NO EMERGENCY DECLARED. REPLACED THE NR 1 ACW GENERATOR.SDR IPXA2017021514068Control Unit · multiple failNUMEROUS ELECTRICAL FAULTS (FCC 2 FAIL, AVIONICS OVERRIDE, DU DISPLAYS, A/C AND D/C TIE BUSSES) WHICH RESULTED IN DEGRADED NAVIGATION CAPABILITY. EMERGENCY DECLARED. REPLACED EPCU IAW AMM 24-08-01-400. CHECKED NORMAL. REPLACED OVERHEAD ELECTRICAL CONTROL PASDR FDEA201702090487Gcu · malfunctionedEXPERIENCED MULTIPLE AC BUSS 2 FAULTS DURING ARRIVAL. DECLARED EMERGENCY AND LANDED. CHANGED NR 2 AC BUSS GCU. OPS CHECKED NORMAL ON ENGINE RUN. OPS CEHCKED GPCU ALL TESTS OK. ACFT OK FOR SERVICESDR G1IA20170209947AMRelay · stuckPILOT REPORTED, ENROUTE AT APPROXIMATELY 300 FEET BELOW LEVEL OFF AT 11,000 FEET THE AUTOPILOT WAS DISCONNECTED AND FOUND INVERTER INOPERATIVE. SELECTED NR 2 INVERTER, DID NOT WORK. DECLARED AND EMERGENCY AND LANDED WITHOUT FURTHER PROBLEMS. MAINTENANCE DISCOVSDR FDEA201701100113Unknown · malfunctionedON PREFLIGHT- SELECTING EMERGENCY POWER TO "ARM"- NO "ON" LIGHT. PERFORMED EPCU RTS IAW AMM 24-08-01-5, NO DEFECTS NOTED. PERFORMED ELECTRICAL EMERGENCY POWER SYSTEMS TEST IAW AMM 24-00-00-5, NO DEFECTS NOTED. AIRCRAFT OK FOR SERVICE.
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