JASC 2421
Service difficulty reports · 4,277
Reports filed under 2421 · AC Generator-Alternator, 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 = '2421' 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 = '2421' 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 QR9R2025061100001Sensor · faultyDURING HOVERING FLIGHT, THE GEN AMPS SPLIT MORE THAN 10 AMP. #1 GEN AMPS WAS 10 AND #2 WAS 30. WHEN SHUTTING DOWN THE A/C, THE GEN AMPS RETURNED TO WITHIN 10 AMPS BUT THEN SPLIT AGAIN MORE THAN 10 AMPS. REMOVED AND REPLACED TRANSFORMATOR IAW AMM 24-30-00, 4-6;SDR YENA2025060600566Warning Message · false indicationFLT#20, LHR-JFK. (ETOPS), CLASS II AC GEN MSG ( CLASS II MX MSG - GPCU OR AC GEN ); NO CLASS II MSG'S PRESENT ON ECAM. PERFORMED OPS CHECKS OF GPCU IAW AMM 24-40-00. OPS CHECK NORMAL. THIS CLR'S MDDR # 584587 MX4 UPDATED PLACARD RMVDSDR QR9R2025060600001Sensor · faultyAFTER ENGINE START, NO OUTPUT FROM #1 GENERATOR. REMOVED AND REPLACED CURRENT SENSOR IAW AMM 24-30-00, 4-6. MOC COMPLETED IAW AMM 05-60-00, 6-12.SDR CALA2025060405267Idg · faultedAT CRUISE ALT, LEFT GEN DRIVE LIGHT FIRST THEN GEN OFF. 1X GEN OFF RESET FAILED REF FM 2.60.35 ON ARRIVAL LEFT IDG DELTA P POPPED OUT. IDG FILTER REMOVED AND FOUND CONTAMINATION. IDG REMOVAL/ INSTALLATION CARRIED OUT I.A.W AMM 24-11-01-004-002-006/ 24-11-01-40SDR DALA2025053104193Idg · faultedSHIP 3040 - ATO - AT 75KTS DUE TO ELEC IDG 2 OIL LO PR ECAM WARNING. REPLACED #2 IDG. OPS CHECK GOOD. (LP 7514382)SDR CALA2025052304923Idg · faultedACFT RETURN TO FIELD, CREW STATED ALL FAULTS STARTED TO OCCUR AT WHEELS OFF GROUND. FIRST FAULTS ON PFR INDICATE ELEC AC BUS 2 FAULT, ELEC DC BUS 2 FAULT, ELEC GEN 2 FAULT.ALSO ON PFR TOO MANY FAULTS TO LIST! REF TSM 24-20-00-810-813 . CHECKED AIRCRAFT WIRING SDR DALA2025052704029Generator · failedABORTED TAKE-OFF DUE TO A LEFT ENGINE GENERATOR FAILURE MESSAGE: REPLACED GROND RELAY AND AUX POWER RELAY. TEST GOOD.SDR CALA2025052104894Contactor · faultyGEN 2 FAILURE/TR2 FAILURE CAP REPORTED T/O INHIBIT OCCURRED DURING T/O FOLLOWED BY A TR2 FAULT AND GEN 2 FAULT. BOTH SCREENS ON FO SIDE BLANKED OUT. ABLE TO RECOVER GEN 2 BY CYCLING. TR2 FAULT REMAINS. PFR PIC ATTACHED. UPDATING TIME REF TSM 24-20-00-810-814 SDR DALA2025052003849Idg · faultedSHIP 3145 - MISC/DE - DUE TO A GEN 2 FAULT DURING THE APPROACH. CORRECTIVE ACTION: DEFERRED ENG 2 IDG PER MEL AND CONTINUED IN SERVICE. (LP: 7434224)SDR LDIA2025051400001Generator · destroyedDC GENERATOR BEARING FAILED CAUSING GENERATOR TO PARTIALLY DISINTEGRATE AND BECOME DETACHED FROM ITS DRIVE PAD. DURING THE FAILURE THE FIRE LOOP WAS STRUCK CAUSING IT TO FAIL, OIL WAS RELEASED FROM THE ENGINE CAUSING A LOSS OF OIL PRESSURE, AND THE HEAT FROM TSDR DALA2025051303718Idg · leakingSHIP 3228 - DIV - TO PHL DUE TO IDG 1 LOW OIL PRESSURE ECAM MESSAGE WITH APU ALREADY DEFERRED PER MEL. CORRECTIVE ACTION: REMOVED AND REPLACED #1 ENGINE IDG AND QUAD RING. OPERATION, LEAK CHECK AND IDLE RUN GOOD. OK FOR SERVICE. (LP: 7569619)SDR YENA2025051200472Idg · failedFLT#1620, BOS-LHR. (ETOPS) ' AC GEN CLASS III MX MSG AFTER SHUT DOWN ( CLASS II MX MSG - GPCU OR AC GEN ).' REMOVED AND REPLACED ENG #2 IDG IAW AMM 24-21-51. REF L/P OPS CHECK OK NO LEAKS. NO MSG.SDR CALA2025051204622Idg · faultedGENERATOR DRIVE SYSTEM EICAS MESSAGE (01=L, 02=R) GEN DRIVE SHOW N. DRIVE LGT ON. GEN DRIVE DISC. NOTE: RECURRENT IDG TEMP AND CO OLING VLV EICAS MSG & ON/OFF OR STEADY ON OF THE DRIVE LGT, MAY BE CAUSED BY IDG TEMP BULB (PIN/SOCKET WEAR). TO VERIFY, FI 02UNABSDR CALA2025050804562Idg · faultedRT SOURCE OFF LIGHT AND DRIVE LIGHT ILLUMINATED ON GEN2 DRIVE DISCONNECT GEN2 HAD ZERO VOLTS PART VERIFICATION FOR GENERATOR ASSY- INTEGRATED DRIVE PART # 761574B M&E 29-2411-9-0001 S/N AAAH010035 REF AIPC 24-11-11-01A FIG ITEM 5. REMOVED AND REPLACED NUMBERSDR AALA202505080888Idg · overheatedAIRCRAFT WAS GROUNDED: DURING CRUISE GOT ELECTRICAL GEN 1 FAULT. DECESION MADE TO DIVERT TO CANCUN AND EMERGENCY WAS DECLARED AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED #1 IDG IAW AMM 24-21-51.SDR 141A202504230001Generator · failedAROUND 10K FEET 40 MILES FROM BRL, CREW HEARD LOUD BANG FOLLOWED BY SMELL OF SMOKE. FEW MINUTES LATER GEN OFF/STANDBY POWER ON CAME ON. CREW DECLARED EMERGENCY AND CONTINUED TO BRL.THE SMELL WENT AWAY ONCE FINISHED WITH THE CHECKLIST. LANDED SAFELYSDR YENA2025042500435Warning Message · false activationFLT#34, CDG-BOS. '(ETOPS). AC GEN CLASS II MSG( CLASS II MX MSG - GPCU OR AC GEN ); (RESOLVED ON W/O: 1408395 TASKCARD: NR-00001 ) R/R GCU 2 IAW AMM 24-22-34. OPS CHECK GOOD. MX-4 UPDATED. PLACARD REMOVED. MDDR CLEARED.SDR CALA2025042504242Gcu · faultedENG 2 GEN ON APU ON BURNING ELECT SMELL WITH SO RCE OFF LIGHT L EFT SIDE HAD FAULTS ON BPCU, APU GCU & #1 GCU. ATTACHED PICS. ALSO PERFORMED FIM 24-21 TASK 823 ALL CHECKS NORMAL UP TO STEP E.(12). WILL NEED TO CONTINUE WITH E.(13) ENGINE RUNS. COMPLETED FIM TSDR CALA2025041804017Gcu · inoperativePER FLIGHT CREW - RT MAIN BUS FAILED IN FLIGHT, RAN CHECKLIST- APU ON, FO'S BUS FAILED EVERY 10 MINUTES WITH CABIN LIGHTS FLICKERINGREPLACED R GCU PER AMM 24-22-02. S/W CK GOOD, OPS TESTS REQ'D. REPLACED ELMS CB C24332 REF SSM 24-22-21. REMOVED AND REPLACED ESDR CALA2025041803984Gcu · faultedEXPERIENCING A DIVERSION OR AIR TURN BACK DUE TO A MECHANICAL REASON. REPLACED IDG, GCU AND WIRING CHECKS AND HIGH POWER RUNS WITH OPS CHECKS OK. CONFIRMATION FLIGHT TO BE ACCOMPLISHEDSDR CALA2025042104034Idg · overservicedELEC GEN DRIVE R EICAS ADVISORY RIGHT IDG FAULT (LOW INTERNAL OIL PRESSURE).FLIGHT CREW PERFORMED QRH IDG DISCONNECTED,MAINTENANCE PROCEDURE CARRIED OUT. FOUND NR 2 IDG WAS OVER SERVICED. REPLACED ROLS REF AMM 24-11-15. DRAIN EXCESS OIL FROM IDG, RECONNECTEDSDR ABXA20250416079Generator · trippedDURING TAXI OUT, LT GEN OFF AND LT GEN DRIVE EICAS MSG ILLUMINATED. A/C RETURNED TO BLOCKS. (BTB) DEFERRED PER MEL ABX-24-00-1-1. MAINTENANCE PROCEDURES C/W. PLACARDS INSTALLED. MBCB 04/19/25. A/C RETURNED TO SERVICE.SDR CALA2025041703956Idg · faultedRT GEN OFF. RESET ONCE. FAILED A SECOND TIME. PERFORMED BPCU BITE PER MM 24-11- 00. FOUND MM 24-35002 FOR RIDG PHASE A CURRENT DISAGREE. PERFORMED BPCU BITE PER MM 24-11-00. FOUND R IDG PHASE A CURRENT DISAGREE, MM 24-35002. PERFORMED BPCU BITE PER MM 24-11-00SDR CALA2025041503865Idg · faultedAT CRUISE L GEN DRIVE CAME ON FOLLOWED QRH AND DISCONNETED GENREF LP 4495210 DUPLICATE ITEM "L GEN DRIVE. RAN FLIGHT MANUAL CHECKLIST, DISCONNECTED AND STARTED APU REF NON-NORMALS 2.60.34" LP 4495210 TRANSFERRED TO THIS LP AND CLEARED REF LP 4495696 OVERFLOW SSDR SWI2025F00444Generator · warning messageAC BUS 1 FAIL ACCOMPANIED BY GEN 1 OFFLINE AND AC ESSENTIAL BUS FAIL AFTER TAKEOFF, RAN QRH, RETURN TO FIELD (FLIGHT 6534 - FILED OPEN)FOUND TERMINAL T3 ON THE LH IDG DAMAGED AND SIGNS OF OVER HEATING. REPLACED #1 IDG REF. CRJ700 AMM 24-11-01, AND REPLACED #1 SDR GTIA2025040738838Generator · inoperativeGEN 1 FAIL IN FLIGHT RESET ATTEMPT VIA ECAM UNSUCCESSFUL-REFERENCE LOG PAGE 3448002-1 AND 3448004-1 FOR CORRECTIVE ACTION . NO DEFECT NOTED AT THIS TIIME A/C OK FOR OPERATION. REF TSM # 24-00-00-710-060-E ACCONPLISHED TROBLESHOOTING FROM STEP 3A TO 5C FOUND GCSDR YENA2025040700368Warning Message · failed inspFLT#848, LAS-JFK. (ETOPS) 'CLASS 2 MX MSG AC GEN ( CLASS II MX MSG - GPCU OR AC GEN ); PERFORMED BITE TEST THROUGH CFDS/EPGS OF GCU # 2 NO MAINT MSG NOTED, NO FAULTS DETECTED TSM 24-22-00 MDDR CLEARED MX-4 UPDATED PLACARD REMOVED.SDR SWAA2025040721566Gcu · failedENROUTE NOTICED ELECTRICAL BURN SMELL THEN RECEIVED A 'TRANSFER BUS OFF' LIGHT AND 'SOURCE OFF' LIGHT ON NO.2 SIDE. RAN QRH AND DURING CHECKLIST GOT A 'DRIVE' LIGHT ON NO2 SIDE. COMPLIED WITH QRH AND FA'S CALLED TO SAY CABIN HAD SMOKE. RAN QRH AND SMOKE CLEARESDR SWAA2025040721301Gcu · burnedAT CRUISE; A NOTICEABLE ELECTRICAL SMELL WAS NOTICED THROUGHOUT ENTIRE PLANE. SHORTLY AFTER; TRANSFER BUS LIGHT ILLUMINATED; FOLLOWED BY SOURCE OFF LIGHT; FOLLOWED BY DRIVE LIGHT - ALL CHECKLISTS WERE FOLLOWED AND COMPLIED WITH<[01] WHILE PERFORMING FIM TASK 0SDR ABXA20250331067Idg · faultedDURING TAXI OUT AFTER ENGINE START, EICAS MESSAGE APPEARED RT GENERATOR OFF. A/C RETURNED TO BLOCKS (BTB). DEFERRED RT ENGINE IDG IAW MEL ABX-24-00-1-1. MBCB 04/03/25. PLACARD INSTALLED, MAINTENANCE ACTION C/W. AIRCRAFT REMAINS NO ETOPS. A/C RETURNED TO SDR CALA2025040203457Idg · faultedCONTROL EICAS MESSAGE (01=L, 02=R) GEN OFF DISPLAYED. GEN OFF LI GHT ON. GENERATOR RESET DID NOT CORRECT CONDITION 02 CRUISING AT FL320 GOT EICAS MESS RT GEN OFF RT GEN FILED OFF LIGHT IS ON ALSO. SFOMM PLZ CHK BPCU FOR ANY FAULTS PER FIM... BPCU BITE SHOWS ONSDR ABXA20250327065Generator · faultedON TAKEOFF ROLL LT UTILITY BUS, RT UTILITY BUS, AND LT GEN ILLUMINATED. ABORTED TAKEOFF AT 30-40KTS, BRAKE ENERGY WAS A MAX OF 3. A/C RETURNED TO BLOCKS (BTB). DEFERRED LT GENERATOR IAW MEL ABX-24-00-1-2. A/C REMAINS NO ETOPS. A/C RETURNED TO SERVICE.SDR NACA2025032300001Idg · malfunctionedDURING READINESS CHECK LIST FOUND RIGHT GENERATOR DRIVE LIGHT OFF WITH R ENG IN CUTOFF. REPLACED IDG IAW AMM 24-11-01SDR DALA2025032502201Idg · lowSHIP 3022 -ATO- AT 80 KTS FOR ELEC IDG 1 OIL LO PR ECAM MESSAGE. CORRECTIVE ACTION:FOUND #1 IDG OIL LEVEL BELOW GREEN BAND, SERVICED SAME. NO OIL LEAKS NOTED, AND DELTA P INDICATOR NOT POPPED. OPERATED #1 ENGINE AT IDLE AND NO LEAKS NOTED. #1 IDG PLACED ON MELSDR NACA2025031900001Idg · disconnectedRIGHT ENG GENERATOR INOP. DEFERRED RIGHT ENG GENERATOR IAW MEL 24-00--01-02 RECONNECTED IDG PERFORMED BPCU BITE PER FIM 24-20 NO FAULTS FOUND.SDR CALA2025032103069Gcu · faultedR GEN CONT LIGHT AND AC BUS OFF EICAS ILLUMINATED BUS PWR CONT UNIT FAULTS FOR RIGHT GEN PWR SYS CHECKED R-H ENG DPI INDICATOR AND FOUND NOT TRIPPED. RECOMMEND FOLLOWING FIM 24-20 TASK 802 STEP N (1) (I) FOR FAULT MESSAGES (DP TRIP) AND (MAIN BUS / OVERLAP ZONSDR YENA2025031900276Warning Message · illuminatedFLT#2288, JFK-AMS. (ETOPS) ' AC GEN CLASS II MSG ON STATUS DISPLAY ( CLASS II MX MSG - GPCU OR AC GEN ); T/S PER TSM 24-22-00-810-832-A NO DEFECTS NOTED AT THIS TIME. OPS CHECK NORMAL. MDDR CLEARED MX-4 UPDATED PLACARD REMOVED.SDR DXTA2025030502556Gcu · faultedSTANDBY EMERGENCY POWER: DEPLOYMENT ADG ABOVE 18000 CORRECTIVE ACTION; PERFORMED GVI OF ADG STRUCTURE AND DOOR DUE TO DEPLOYMENT WITH NO DISCREPANCIES NOTED. STOWED ADG IAW CL-650 AMM 24-23-01-840-807. SWAPPED GCU 1 & GCU 2. RAN ENGINES FOR OPERATIONAL TEST, ASDR HALA20250303074Generator · faultedETOPS - RECEIVED ELEC APU GEN FAULT ECAM AFTER LANDING. ECAM PROCEDURE DID NOT RESTORE APU GENERATOR POWER. REMOVED AND REPLACED APU GENERATOR PER AMM 24-23-51. OPS AND LEAK CHECK GOOD. NO FAULTS NOTED. OK FOR SERVICE.SDR DALA2025030101572Generator · failedSHIP 1606 -ATB/DE- THE FLIGHT CREW ACCOMPLISHED AN AIR TURN BACK FOLLOWING THE FAILURE OF THE #2 GENERATOR DURING CLIMB. ACCOMPANIED BY THE "RT IDG DRIVE" LIGHT ILLUMINATING ON AN ETOPS ROUTE. THE PILOT DECLARED AN EMERGENCY WITH ATC, DUMPED SOME FUEL, AND PRESDR I5PA2025022519307Heat Exchanger · leakingFLT NO: N/A (MX INSP). ESI - LEFT ENG IDG AIR/OIL HEAT EXCHANGER LEAKING. R/R LH ENG IDG AIR/OIL HEAT EXCHANGER. NO LEAKS NOTED.SDR CALA2025022002400Idg · faultedAC GENERATOR DRIVE SYSTEM DRIVE LIGHT IS ILLUMINATED GEN-2 DRIVE LT ILLLUMINATED ON ENG START. DISCONNECTED GEN 2 PER PROCE DURE. #2 IDG DISCONNECTED BY THE CREW. IDG OIL LVL CHECKS OK. DPI CHECK OK. RESET IDG, RAN ENGINE NO VOLTS/ NO FREQ. SWAPED KNOWN GOODSDR A6WA202502118859Idg · faultedON CLIMB OUT REC'V GEN 1 OFF CAUTION MESSAGE. C/W QRH MESSAGE DISAPPEARED. REMAINED EXTINGUISHED REST OF FLIGHT. ***** AIRCRAFT REMOVED FROM SERVICE ***** R/R #1 IDG ASSEMBLY IAW AMM 24-11-01 REF 370816-4 FOR REQ LEAK AND OPS CHECK. SERVICED IDG IAW AMM SUPSDR 2025F00038Idg · failedQRF TO LPB FLIGHT 960 DUE TO DRIVE LIGHT GENERATOR #2 LIGHT "ON" FRM 241 010 02 AND APU LOW OIL PRESSURE LIGHT ON AUTO SHUTDOWN FRM 492 060 00SDR HALA20250207053Generator · faultedETOPS - ELEC GEN 2 FAULT, RESET DID NOT WORK, GEN #2 OFF. 5 MINS LATER ELEC - IDG#1 LO PR IDG 2 TO OFF PER PROCEDURE. REMOVED AND REPLACED #2 I.D.G. PER AMM 24-21-51. LEAK CHECK OPS CHECK GOOD. OK FOR SVC.SDR I5PA2025020419303Gcu · faultyFLT NO: N/A (MX INSP). ESI - WHEN GEN TRANFER DURING ENGINE START LOWER EICAS BLANKS OUT ALONG WITH RH IRU AND FMS. R/R RH GCU. OPS CHECK GOOD.SDR SIMA20250130001Idg · failedIDG 1 OFF BUS FAIL OUT OF EYW / APU FAIL ON APPROACH / DECLARED EMERGENCY COMPLETED RAR E1 IDG IAW AMM 24-21-01, OPS CHECKED GOODSDR ABXA20250127023Generator · malfunctionedDURING TAXI AFTER STARTING LH ENG,GOT LEFT ENG. CONTROL AND LEFT GEN DRIVE DISSCONNECT LIGHT, A/C RETURNED TO GATE (BTB) AND MTX GROUNDED A/C ,MTX DEFERRED LH GEN IAW MEL ABX-24-00-1-1 .AND RETURNED A/C TO SERVICE.SDR CALA2025012301979Idg · faultyAC GENERATOR DRIVE SYSTEM DRIVE LIGHT IS ILLUMINATED GEN-2 REPLACED IDG #2 REF AMM 24-11-11. OPS CHECK GOOD. C/W PER AMM 24-11-11 AND GMM 09-10-05 ADD EMP:U192746SDR CALA2025012402029Idg · faultedNUMBER 1ENG DRIV LGT ON DISCONNECTED PER TOMC DDP COMPLIED WITH. DRIVE LIGHT BULBS ON GENERATOR DRIVE AND STANDBY POWER PANEL, AND GEN OFF BUS LIGHT BULBS ON GROUND POWER PANEL AND BUS SWITCHING PANEL MUST BE REPLACED UPON CLEARING THIS MEL ITEM. MEL 2401A *D
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