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 COEA2026100802921Vsi · failedFLIGHT 7275 ICT-AFW DISCREPANCY: DUAL AC BUS FAILURE IN FLIGHT. CREW EXECUTED THE EMERGENCY CHECKLIST, RESTORING POWER TO THE FO'S SIDE. THE CAPTAIN'S SIDE REMAINED INOPERATIVE. THE AIRCRAFT LANDED SAFELY IN AFW. CORRECTIVE ACTION: MAINTENANCE REPLACED THE CSDR 2026FA0000797Attach Bracket · crackedALTERNATOR ATTACH BRACKET P/N: 07A22214 FOUND TO BE CRACKED COMPLETELY THROUGH AT THE AFT ATTACH BOLT DURING THE 1ST 100 HOUR INSPECTION OF THE AIRCRAFT.SDR AALA202607146993Control Panel · faultedAIRCRAFT WAS GROUNDED: DURING IN FLIGHT APU START BATTERY SWITCH -OFF- LIGHT ILLUMINATED AND STAYED ILLUMINATED. DECESION MADE TO RETURN TO DFW. MAINTENANCE (REF TSI 0144388) REPLACED ELECTRICAL CONTROL PANEL IAW AMM 24-22-01.SDR CALA2026022414046Idg · faultedRT AC BUSS OFF, FIGHT CREW REPORTED BUSS DROPPED OFF, CABIN WENT DARK AT TIME OF FAILURE AND DID WAS NOT PICKED UP. T/S IAW WDM 71-51-22-1 AND SSM 24-23-02 . CHECKED WIRING FROM RT ENG GCU D2070B TO RT ENG IDG D1396P. ALL WIRING CHECKED GOOD. CHECKED RT ENG ISDR DXTA2025093005135Relay · faultedAC ESS BUS COMES ON AND OFF DURING FLIGHT. WITH EMER POWER SWITCH IN ARM THE EMER LIGHTS WILL ALSO THEREFORE COME ON WHEN THE AC ESS BUS COMES ON TOO AND IT GOES OFF AS THE AC ESS BUS GOES OFF. REMOVED AND REPLACED AC ESS BUS SENSE RELAY KIXD IAW CL-650 AMMSDR DALA2025052103929Tru · failedSHIP 0690 -ATB/DE- DUE TO RIGHT AC BUS FAIL. CORRECTIVE ACTION: REPLACED TRANSFORMER RECTIFIER UNIT AND RIGHT GENERATOR CONTROL UNIT.SDR CALA2025032103072Idg · lowELEC GEN OFF L EICAS ADVISORY LEFT GENERATOR CONTROL BREAKER (GCB) OPEN OR GENERATOR CONTROL S WITCH OFF AND ENGINE NOT SHUT DOWN. FIM TASK REF : FIM TASK REFERENCE NOT FOUND CMC MSG# 2431631 FLIGHT STATUS: I INTERMITTENCE CODE: M PH: CRUISE NARRATIVE: GENERASDR DXTA2024082700323Unknown · noiseWHILE CLIMBING THROUGH APPROX FL310, A LOUD REVERBERATING/THUMPING NOISE WITH CRACKLING STATIC NOISE BEGAN EMANATING FROM RT FWD CABIN INTERIOR SIDEWALL. ALSO A VIBRATION & WARMTH COULD BE FELT ALONG INTERIOR WALL. DIVERTED TO KBIL. NOISE CONTINUED AFTER ENG SDR FDEA202404300523Gcu · failedON ARRIVAL RECEIVED LEVEL 1 BUS AC 3 OFF. WORKING CHECKLIST WITH OTHER ASSOCIATED ALERTS. EMERGENCY DECLARED. NO REFERENCE REQUIRED, CHECKED EPCU CURRENT FAULTS & FOUND AC BUSS-3 SENSOR RELAY INTERFACE SAME FAULT LISTED IN LAST LEG OF HISTORY. COMPLIED WISDR AALA202403084994Transformer · failedAIRCRAFT WAS GROUNDED: AT CRUISE, GENERATOR 1 FAILED. ASSOCIATED AC1 BUS FAULT RESULTED IN APU BEING UNABLE TO POWER LEFT SIDE. DOWN TO SINGLE GENERATOR POWERING AIRCRAFT (APU ON, BUT NOT CONNECTED), DECLARED EMERGENCY AND LANDED IN CLT. **ORIGINAL REPORT FOR SDR EGYF20240218001Idg · wrong partTHE A330 IDG PN: 752168B, SN: AAAD001484 HAS EXPERIENCED A REPEATED FAULT WITH CURRENT TRANSFORMER. THE UNIT WAS REMOVED FROM GCF ON 15. NOV.2020 AND SENT TO GLOBAL (GLOBAL AIR SERVICES LLC 14075 SW 143 CT UNIT # 4) MIAMI, FL 33186FOR REPAIR THEN RECEIVED SESDR ASAA2024020347677Pcu · faultyWHILE FLYING WITH MEL 24-1B WITH #1 GEN INOP (SEE 60726816) AND DESCENDING THROUGH FL 250 THE APU GENERATOR WENT OFF LINE WITH 0 VOLTS 0 FREQS. AT APPROXIMATLLY FL 200 THE #2 GE WENT OFFLINE FOR ABOUT 45 SECONDS. WE WERE ABLE TO RESET @3 GEN WHICH CAME BACK ONSDR AALA202312247902Seal · leakingAIRCRAFT WAS GROUNDED: #2 #4 FLIGHT ATTENDANTS REPORTED DIRTY SOCK ODOR APPROX 10,000VFOR ABOUT 20 MINUTES ODOR SLOWLY DISAPPATED. MAINTENNCED FOUND GENERATOR DRAIN SEAL LEAKING REPLAXCED IAW AMM 24-23-51.SDR ASAA2023110245976Contactor · faulty#1 ENGINE GEN TRIPPED DUTING TAXI NO VOLTS NO AMPS INDICATED. GROUNDED - YES. (RESOLVED ON W/O: 1975555 TASKCARD: N/R-00002 ) FOLLOWED IFIM 24-21-00-810-820. ALL WIRE CHECKS GOOD. REPLACED NO.1 GCB 801 AND APU CB 803 REF AMM 24-21-41. ALSO REF BOEING FTD 24-22SDR ASAA2023102545841Unknown · unknownWITH APU RUNNING NO FREQS OR VOLTS DISPLAYED. BLEED AIR WORKS. GROUNDED - YES. ACCOMPLISHED APU START PROCEDURE REF B737-9 AMM 49-11-00 ALL OPS NML WITH GOOD VOLTS AND FREQS. NO STATUS MSG ON OMF.SDR ASAA2023092445294Contactor · faultyON PREFLIGHT FOUND THE SOURCE OFF WITH APU SELECTED ON LEFT / #1. GROUNDED - YES. REMOVED AND REPLACED AUXILIARY POWER BREAKER C803- P91 AND PERFORMED GOOD TEST OF THE AUXILIARY POWER BREAKER AS PER AMM 24-21-41/401.SDR AALA2023080407690Unknown · failedAIRCRAFT WAS GROUNDED: "ELEC GEN OFF R2" DISPLAYED ON SYNOPTIC WOULD NOT RESET. MAINTENANCE FOUND ELECTRICAL ARC FLASH WITH HEAVY SOOT CONTAMINATION DISCOVERED ON OVER VOLTAGE TRANSIENT PROTECTION UNIT. **SUPPLEMENTAL REPORT FOR AALA202308024413: MAINTENANCE RSDR SIMA20230716001Unknown · unknownREJECTED TAKEOFF 110KTS DUE TO IDG2 FAIL. -C/A-PERFORMED HIGH ENERGY STOP CONDITION INSPECTION W/C IAW 05-50-12-200-801-A. NO DEFECTS NOTED AT THIS TIME.SDR ASAA2023070543908Unknown · unknownAPU GEN OFF LIGHT NOT ILLUMINATING WHEN APU IS OPERATIONAL. GROUNDED - YES. STARTED APU. APU GEN OFF LIGHT WORKS NORMAL. CYCLED APU GEN OFF AND ON SEVERAL TIMES WITH NO FAULTS. APU GCU BITE GOOD. REF FIM 24-21 TASK 801.SDR DXTA2023062689410Unknown · unknownAC GENERATION AND CONTROL: SLIGHT ELECTRICAL SMOKE ODOR BEFORE TAKEOFF , FADED WHEN FACING DOWN RUNWAY. DURING TROUBLESHOOTING OF THE RH WINDSHIELD HEAT INOP CAS MESSAGE. WHILE REMOVING RH WINDSHIELD HEAT CONTROLLER, NOTED STRONG ELECTRICAL BURNING SMELL FROSDR CALA2023062602037Idg · unknownELEC GEN SYS R EICAS STATUS IDG HAS DISCONNECTED OR A PROTECTIVE TRIP OF THE GENERATOR CONTROL BREAKER HAS OCCURRED OR A PROTECTIVE TRIP OF THE BTB HAS OCCURRED. REPLACED IDG REF AMM24-11-01. ENGINE RUN ACCOMPLISHED AND ALL INDICATION NORMAL. ROTABLE PARTS CHASDR ASAA2023062343692Module · faultySOURCE OFF LIGHT ON GEN 1 SIDE WHEN TRANSFERRING FROM GROUND POWER TO APU GEN. GROUNDED - YES. OMF SHOWS NO FAULTS, GCU & BPCU NO FAULTS, ELECTRICAL PANEL MODULE TEST NO FAULTS AMM 46-13-00, AMM 24-21-00, AMM 24-41-00, AMM 24-31-00, CYCLED A/C POWER WITH NO FISDR ASAA2023041442902Panel · faultyON TAKE-OFF ROLL ELEC 2 HYDRAULIC LOW PRESSURE LIGHT ILLUMINATED. GROUNDED - YES. FOUND C/B C881 (F3) IN P92 PANEL OUT. INSPECTED HYD PUMP D02664 + NO DEFECTS FOUND RESET C/B REF B737-9 AMM 20-60-01. C/B POPPED WIEN "A" SYS ELEC 2 SWITCH TURNED ON. C/B DOES NOSDR VNAA202304181111Gcu · unknownIDG 2 FAIL INFLIGHT, MULTIPLE STATUS MESSAGES APU BATTERY CHARGER, FLAPS HALFSPEED, SLATS HALFSPEED, DC ESS TIED CLOSED, DC MAIN TIE CLOSED, ICE DET 2 FAIL / REMOVED AND #2 GCU IAW CRJ 900 AMM 24-11-07-000/400-801 AND OPS CHECK GOOD IAW CRJ 900 AMM 24-11-01-71SDR ASAA2023032842646Contactor · faultyAPU GEN OFF BUS LIGHT DOES NOT ILLUMINATE AFTER APU START W/APU ELECTRIC AVAILABLE BUT NOT ON BUS. LIGHT BULBS TEST OK. GROUNDED - YES. REPLACED AUX POWER BREAKER C803 REF B737-800 AMM 24-21-41.SDR CALA2023032700890Idg · unknownELEC GEN DRIVE L EICAS ADVISORY LEFT IDG FAULT (LOW INTERNAL OIL PRESSURE). REPLACED BOTH L&R GCU PER AMM 24-22-02-000-801. GCU POST INSTLATION TESTED. FOUND OK. RAN BOTH ENG. GEN OPS NORMAL. PARTS USED: 1211678,QTY :1 27-2421-9-0001,QTY :1 ROTABLE PARTS CHANGSDR IPXA2023022091140Buss · noneDIVERSION & EMERGENCY DECLARED. L AC BUSS OFF LIGHT IN FLIGHT. FOLLOWED PROCEEDURE IN QRH. RESETTING GEN CONT SWITCH HAD NO EFFECT. UPON STARTING APU AND RUNNING CYCLED L BUS TIE SWITCH WHICH RESTORED POWER TO ACFT. DEFERRED LEFT GENERATOR IAW MEL 24-00-1. DMSDR SWAA2023022005157Buss · fault messageIN CLIMB AROUND FL 180; LOST #1 GEN; TR1; AND HALF THE AIRCRAFT ELECTRICAL SYSTEM. APU AND GROUND POWER WILL NOT POWER AIRCRAFT; NUMEROUS OTHER NON NORMAL INDICATIONS THROUGHOUT COCKPIT.<[01] RAN #1; #2 ENG; AND APU PER AMM 71-00-00 AND AMM 49-11-00. CYCLED AISDR SWAA2023022003800Generator · fault messageIN CLIMB AROUND FL 180; LOST #1 GEN; TR1; AND HALF THE AIRCRAFT ELECTRICAL SYSTEM. APU AND GROUND POWER WILL NOT POWER AIRCRAFT; NUMEROUS OTHER NON NORMAL INDICATIONS THROUGHOUT COCKPIT.<[01] RAN #1; #2 ENG; AND APU PER AMM 71-00-00 AND AMM 49-11-00. CYCLED AISDR IPXA2023020290543Buss · inoperativeINSPECTION TYPE:NA*EMERGENCY DECLARED* *LANDED WITH NO FURTHER PROBLEMS* L AC BUSS OFF - RAN QRH PROCEDURE RETURNED A/C TO NORMAL STATUS LEFT BUS TIE REMAINED ISOLATEDRESET BUS TIE SWITCH AND PERFORMED OPS TEST IAW AMM 24-50-00-715-003 TES GOOD AND NO 60DAYS SDR ASAA2022121341168Module · faultedON TAXI-IN WITH APU RUNNING AND ELECTRIC AVAILABLE APU GENERATORS WOULD NOT COME ONLINE. APU GEN VOLTAGE READ 0 (ZERO). GROUNDED - YES. OPERATED APU GERATION SYSTEM WITH NO DISCREPANCIES NOTED. CYCLED POWER SEVERAL TIMES BETWEEN APU AND ENGINES, ALL OPS NML. RSDR ASAA2022120941085Generator · inoperativeAPU GENERATOR FELL OFF LINE PRIOR TO PUSHBACK. GROUNDED - YES. REMOVED AND REPLACED APU GENERATOR WITH REFERENCE B737-900 AMM 49-41-21-400-801 STEP (H) (7C). OPS CHECK GOOD AND NO LEAK FOUND WITH REF AMM 49-41-21-710-001.SDR Z1RA76010232022Generator · wornAC GEN BEARING LIGHT ILLUMINATED IN FLIGHT.SDR WX0A1900010074276None · none(EMERGENCY DECLARED) #1 ELEC GEN FAULT INFLIGHT FOLLOWED ECAM PROCEDURE RESET GEN 1 FAULT CLEARED AFTER 1 TO 2 MIN, GEN 1 FAULT RETURNED ON ECAM PROCEDURES- NO ELECTRICAL BURN SMELL OR VISUAL INDICATORS / INSTALLED NEW APU STARTER LEADS IAW ESPM 20-48-19.REMOSDR NACA2022091300001Control Unit · intermittentINTERMITTENT EICAS MESSAGE R GEN DRIVE ON FINAL INTO KMIA. REMOVED ND REPLACED RIGHT GENERATOR CONTROL UNIT IAW B767 AMM 24-22-02 OPS CHECK GOOD. ETOPS GROUND VERIFICATION COMPLIED WITH. AC REMAINS ETOPS 180. NO TIME INFO IN TRAX.SDR 2022FA0000494None · wornON TAKEOFR ROLL, AT 50 KNOTS, PILOT STATED "#2 GEN FAIL" CAS MESSAGE DISPLAYED, AND TAKEOFF ABORTED. FINAL INVESTIGATION REVEALED #2 ENG INTEGRATED DRIVE GENERATOR (IDG) DELTA P INDICATOR WAS SET. REMOVAL AND INSPECTION OF FILTER REVEALED NUMEROUS METAL PARTSDR HNAA2022090500254Warning Message · illuminated115V AC OFF BUSS MESSAGE DURING T/O ROLL AT ABOUT 75 KTS. T/O ABORTED AND MESSAGE CLEARED WITH NO ACTION TAKEN. CREW FOLLOWED QRH AND RESET BUSS AS PRECAUTION. IRREGULARITY CLEARED USING NORMAL CREW PROCEDURE.SDR 2022F00317None · noneRIGHT BUS ISOLATED , RIGHT BUS TIE ILLUMINATED. RIGHT GEN OFF LINE. CORRECTIVE ACTION: INSPECTED AND TROUBLESHOOT RIGHT ISOLATION BUS REF FIM 24-20 TASK 802. MAIN BUS / OVERLAP ZONE. ALL CHECKS GOOD AT THIS TIME. RAN BOTH ENGINES AND DISCONNECTED BOTH L & R BUSDR 9WGA2022080878101Gauge · brokenDURING CLIMBOUT, LVL 2 ALERT #3 GEN WAS OFF. RIGHT EMERGENCY POWER CAME ON. REMOVED AND REPLACED #3 GCU IAW AMM 24-21-03. ENGINE RUN AND RTS SATISFACTORY.SDR TIMA20220108009Generator · inoperativeLEFT BOTH STARTERS ON AFTER START UP ( FLEW A B MODEL FOR 2 WEEKS AND GOT USED TO THE NON
LOCKING TOGGLE SWITCH), COUPLE MINUTES AFTER TAKE OFF I NOTICED THE GENERATOR FAIL.
TOLD SLC I WAS RETURNING AND LOST POWER. MADE THE DECISION TO FLY INTO KPVU. MADE ATSDR CALA2022070601649Hydraulic System · failedHYD PRESS C1 ADVISORY THE MESSAGE IS DISPLAYED WHEN ONE OF THE FOLLOWING CONDITION EXISTS:1.) PUMP IS SELECTED TO OFF AND PUMP PRESSURE IS LOW.2.) PUMP IS COMMANDED TO RUN AND PUMP PRESSURE IS LOW.THIS MESSAGE IS INHIBITED WHEN THE SYSTEM PRESSURE IS LOW OR THSDR ASAA2022070138906Circuit Breaker · faultyDURING APU START, AC FLAGGED A APU FAULT UNABLE TO ACCEPT A/C POWER (GROUND). GROUNDED - YES. REMOVED AND REPLACED AUX POWER BREAKER, C803 IN P91 POWER PANEL. OPS TEST GOOD; APU START WITH GEN TRANSFER SUCCESSFUL. REF B737-9 AMM 24-21-41. A/C EXT POWER OPS TESSDR 2022F00288None · noneR GEN OFF EICAS MESSAGE ILLUMINATED AFTER TAKEOFF. REPORTED IN BPCU BITE TEST SHOWED ROLLING FAULTS: 1. DP TRIP 2. MAIN BUS/ OVERLAP ZONE 3. GEN/FDR 4. IDG / OIL IN BULB WARNING.SDR 2022FA0000302None · noneL GEN DRIVE , L GEN "OFF" EICAS MESSAGE. AIRCRAFT BTB AND GROUNDED BY MAINTENANCE. PERFORMED BPCU BITE IAW B767 FIM 24-20 FAULT TREE 01 AND TASK 24-20 804. RECONNECTED IDG AND RAN ENG. COULD NOT DUPLICATE NO FAULTS FOUND. PLACARD REMOVED. MX PROC C/W. AIRCRAFTSDR ASAA2022061138613Apu · failedAC WILL NOT TAKE GROUND POWER. GROUNDED - YES. FLIGHT CREW FURTHER CLARIFIED THAT APU WOULD NOT START, NO GROUND SERVICE POWER (SYMPTOMS DESCRIBED IN B737-9 IFIM TASK 24-22-00-810-801). REMOVED AND REPLACED AUXILIARY POWER BREAKER C803 PER B737-9 AMM 24-21-41.SDR ASAA2022060238554Connector · burned#2 GEN SOURCE OFF LIGHT ILLUMINATED ON TOUCH DOWN. RESET ONCE CAME BACK ON APPLIED APU AND LIGHT EXTINGUISHED. GROUNDED - YES. GCU 2 LOGGED IDG FAULT. ACCOMP BITE CK OF #2 GCU REF FIM 24-21 TASK 801. TEST PASSED AND IDG FAULT CLEARED. RAN #2 ENG, CSD PORTION OSDR AALA202206039756Generator · noneAIRCRAFT WAS GROUNDED: AIRCRAFT WAS GROUNDED: AIRCRAFT ELEC BACK GEN L STATUS MESSAGES SHOWED, FLIGHT DIVERTED TO JFK. REMOVED AND REPLACED BACKUP LEFT GENERATOR PER AMM 24-25-01.SDR ASAA2022051238299Circuit Breaker · faultyAFTER LANDING GEN #2 WOULD NOT TRANSFER TO APU GEN PLACED BOTH ENG GEN BACK ON LINE THEN SELECTED GEN #2 TO APU FIRST. BOTH GEN TRASFERED TO APU GEN. GROUNDED - YES. VERIFIED WITH APU & EXT. & ENG. RUN. REPLACED APU C803 BREAKER WITH NEW ONE. ACCOMP. INST. TESSDR CALA2022050601156Harness · damagedLEFT BUSS OFF LIGHT ILLUMINATED ACCOMPANIED BY ISLN LIGHT ON LEFT BUSS TIE SWITCH AND LEFT GEN OFF LIGHT ALSO ILLUMINATED. CREW STATES THE LEFT GEN RESET ONCE SUCCESSFULLY AND WHEN ATTEMPTING TO BRING THE LEFT BUSS BACK ON LINE EVERYTHING TRIPPED OFF AGAIN. NOSDR CALA2022042901100Idg · failedALL ELEC FAIL ON TAKEOFF RGEN RECOVERED 15 SECS LATER STARTED AP U AND RAN QRH FOR LGEN OFF CHECKED AT GENERATOR AND FOUND T2 TERMINAL OF GENERATOR DISPLAYING SAME READINGS. NEEDS GENERATOR REPLACED. AT THE GATE, PERFORMED BITE CHKOF THE BPCU, ALL THE FAULTS W
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