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 ASAA2020100633285Oil Cooler · leakingEVIDENCE OF OIL LEAK NR 2 ENGINE INBOARD T/R SLEEVE. NR 2 ENGINE IDG HAS NO OIL IN SIGHT GLASS. GROUNDED-YES. REMOVED & REPLACED NR 2 ENGINE IDG AIR/OIL COOLER LEAK CHECK GOOD, REF B737-800 AMM 24-11-21. IDG OIL SERVICED TO FULL, REF B737-800 AMM 12-13-21.SDR UIEA2020100732158Generator · malfunctionedINSTALL GENERATOR ON REPLACEMENT APU (A/N P-367C). INSTALLED NEW GENERATOR, AS PER B767-300 AMM 24-21-01. PENDING APU GENERATOR SYSTEM TEST. APU GENERATOR OPS GOOD, REF AMM 49-11-00. P/N ON 727810C S/N 0175.SDR FDEA202009272333Idg · malfunctionedRECEIVED A LT GEN OFF EICAS ON TAKEOFF ROLL AND REJECTED THE TAKEOFF. RAN THE REJECTED TAKEOFF CHECKLIST AND THE QRH, WHICH RESET THE FAULTS. TRIED THE TAKEOFF AGAIN AND REJECTED FOR THE SAME LT GEN OFF EICAS FAULT. REPLACED NR 1 ENGINE IDG. OPS AND LEAK SDR ABXA20200803183Generator · failedON TAXI OUT APU GENERATOR QUIT, AIRCRAFT BACK TO BLOCK. AIRCRAFT GROUNDED BY MAINTENANCE. REMOVED AND REPLACED APU GENERATOR, IAW AMM 24-21-01. AIRCRAFT RELEASED FOR FLIGHT.SDR ABXA20200803182Gcu · intermittentAPU GENERATOR FAILED IN FLIGHT DURING APPROACH. THE LEFT IDG WAS ON DEFERRAL, THE AIRCRAFT DECLARED AN EMERGENCY BECAUSE THE AIRCRAFT ONLY HAD (1) OPERATING ELECTRICAL POWER SOURCE. AIRCRAFT LANDED AND WAS GROUNDED BY MAINTENANCE. MAINTENANCE REPLACED THE ASDR QXEA2020092900298Electrical Box · damagedIN FLIGHT PUSHER SYSTEM FAIL, ADP HEAT NR 2 AND PROP DEICE CAUTION LIGHT. ON FINAL NR 2 AC GEN CAUTION LIGHT, AFTER TOUCHDOWN NR 1 STALL SYSTEM FAIL, NR 2 STALL SYSTEM FAIL, PUSHER SYSTEM FAIL CAUTION LIGHT. REMOVED FROM SERVICE. FOUND FORWARD POSITIVE TERSDR UIEA2020092852070Contactor · failedON TRANSFER RIGHT GEN WILL NOT POWER LEFT A/C. REMOVED AND REPLACED BTB, IAW AMM 24-22-03. OPS CHECK NO HELP S/N OFF: CL17588, P/N OFF: B430-1. REPLACED LEFT TRANSFORMER RECTIFIER TRU, REFER TO ITEM 1. NO HELP S/N OFF: 2550, P/N OFF: 4-273-03. REPLACED LESDR UIEA2020092532059Gcu · malfunctionedRT GEN OFF EICAS MSG. RAN QRH AND MESSAGE DID NOT CLEAR. LANDED UNEVENTFULLY. PERFORMED FIM 24-20 FAULT TREE 801 THRU STEP 11. RT GEN CONTROL UNIT REMOVED & REPLACED, IAW 24-22-02. PERFORMED TEST OF GCU & BPCU, IAW 24-22-02. OPS CHECK GOOD AT THIS TIME. SDR UIEA2020092532060Gcu · malfunctionedRT AC BUS OFF EICAS MSG COM QRH AND MESSAGE WAS CLEARED. PERFORMED BPCU BIT, IAW 24-22-02. NO FAULTS FOUND. PERFORMED FIM 24-20 FT 801 THROUGH STEP 11. RT GEN CONTROL UNIT R & R, IAW 24-22-02 AND PERFORMED TEST OF GCU AND BPCU, IAW 24-22-02. OPS CHK GOOD.SDR QXEA2020092400294Idg · failedAT CRUISE IDG OFF 1 BUS AMBER MESSAGE ON EICAS. MOMENTARY BLACKOUT OF ALL FLIGHT DISPLAYS AND AP DISCONNECT ENGINE DRIVEN GENERATOR-MEL NR 1 IDG. CLEARED BY REMOVING NR 1 ENGINE IDG, REF AMM TASK 24-21-01-000-801. INSTALLED NEW IDG, REF AMM TASK 24-21-01-40SDR ASAA2020091413168Oil Cooler · leakingNR 1 ENG IDG AIR/OIL HEAT EXCHANGER LEAKING. GROUNDED - YES. REPLACED THE NR 1 IDG OIL COOLER, LEAK CHECK GOOD, REF B737-900 AMM 24-11-21/401.SDR P5CA202008310292Idg · disconnectedRIGHT GEN DRIVE EICAS MESSAGE(RAN QRH DISCONNECTED DRIVE. CREW ADVISED IDG DISCONNECTED EICAS MAINTENANCE PAGE RIGHT IDG DRIVE/AUTO EVENT IDG OIL LEVEL CHECKED FULL 2 SCAV FILTER DELTA P IS SET PER MEL HYD HMG CHECKED C/OSI MEL 24-00-01-01 CAT B APPLIED MDDR SDR AALA2020083089022Idg · inoperativeAIRCRAFT WAS GROUNDED: REJECTED TAKEOFF DUE TO IDG 2 OIL PRESSURE LOW AND GENERATOR 2 FAULT MESSAGES, IDG 2 APPROVED FOR DEFERRAL IAW MEL 24-01B. IDG 2 REPLACED WITH NEW IAW AMM 24-21-51-400-010-C, OPS CHECK GOOD.SDR UIEA2020082871877Idg · malfunctionedR GEN DRIVE CAUTION LIGHT ON T/O ROLL BRIEFLY, CLEARED ITSELF. ALSO SWITCH LIGHT DRIVE FLICKERED FOR THE 1ST 15 MIN OF FLIGHT. SERVICED R IDG TO SERVICE LIMITS IAW AMM 12-13-03-613-027. OPERATED R ENG AT IDLE PACE IAW AMM 71-00-00-862 FOR LEAK CHECK. LEAK CHSDR 2DYA20200828005Generator · disengagedPASSENGER FLIGHT EN ROUTE FROM GEO TO JFK WAS AT TOP OF DECENT (AT FL380 TIME APPROXIMATE 0027Z). THE LT GENERATOR WENT OFF LINE AND THE APU GENERATOR PICKED UP THE ELECTRICAL LOAD. N1, N2 AND N3 WAS REDUCED WITH COMMANDED THROTTLE REDUCTION AND EGT BEGAN TOSDR ASAA2020082753089Idg · inoperativeAFTER ENGINE START NR 2 GENERATOR WOULD NOT PICK UP LOAD. GROUNDED - YES. REMOVED AND REPLACED NR 2 IDG, REF B737-800 AMM 24-11-11-400-801. OPS CHECK, LEAK CHECK GOOD. GROUND VERIFICATION SUCCESSFUL.SDR BEMA202009230001Alternator · brokenRT ENGINE ALTERNATOR POWER SUPPLY STUD BROKE OFF RECTIFIER PLATE, AT THE PLATES 90 DEGREE BEND NEXT TO MADE IN CHINA STICKER. LOOKED LIKE CRACK STARTED FROM STRESS RISERS THAT FORMED IN THE BEND RADIUS OF THE RECTIFIER PLATE.SDR UIEA2020082431850Bpcu · failedL FIELD GEN FLASHING DURING BITE CODE 44 BPCU FAULT FOUND. REMOVED AND REPLACED BPCU IAW 24-41-03. NO FURTHER DEFECTS NOTED AT THIS TIMESDR ASAA2020082523066Generator · failedAPU FAILED START (THREE ATTEMPTS) AT FL380. FAULT LIGHT ILLUMINATED DURING EACH START ATTEMPT. GROUNDED - YES. REPLACED APU SGU, REF B737-900 AMM 49-44-21. PERFORMED APU START AND OPERATION, PER AMM TASK 49-11-00-806-801. OPS NORMAL.SDR ASAA2020081833039Oil Cooler · leakingNR 2 ENGINE HAS REPORTS OF EXCESS OIL ADDED AFTER 15 MINUTE IDLE RUN WHILE AIRCRAFT IS IN ACTIVE STORAGE. PREVIOUS MAINTENANCE ACCOMPLISHED FOR SIMILAR REPORT: ANTI LEAK VALVE REPLACED, LUBE MODULE REPLACED, GEARBOX CHECKED FOR OIL HIDING. GROUNDED - YES. BSDR 2020FA0000377Ring · brokenELECTRICAL SYSTEM FAILURE. FOUND BROKEN RING TERMINAL AT POSITIVE TERMINAL OF ALTERNATOR. FOUND VOLTAGE REGULATOR INOP.SDR UIEA2020082481806Valve · malfunctionedLT IDG VALVE STATUS. REMOVED AND REPLACED IDG AIR COOLING VALVE IAW AMM 24-11-07. GROUND RAN #1 ENG IAW AMM 71-00-00. OPS CHECK GOOD. NO FURTHER DEFECTS NOTED.SDR UIEA2020081721762Generator · malfunctionedAPU WONT HOLD ELEC WHEN SWITCH TO SHIPS PWR. REMOVED AND REPLACED APU GENERATOR IAW AMM REF 24-21-01. OPS CK NORMAL.SDR ASAA2020080933004Idg · malfunctionedGENERATOR CONTROL UNIT NR 2 BOX IN E & E BAY HAS IDG FAULT LIGHT. GROUNDED - YES. RECONNECTED THE NR 2 IDG, PERFORMED TEST OF THE NR 2 GCU AND PERFORMED OPS TEST OF NR 2 IDG, ALL CHECKED GOOD IAW AMM 24-11-11-700-801, AND AMM 24-11-00-700-803.SDR UIEA2020081231687Generator · inoperativeAPU GENERATOR INOPERATIVE. REMOVED AND REPLACED THE APU GENERATOR UNIT IAW AMM 24-21-01. OPS AND LEAK CHECKED GOOD.SDR UIEA2020080531687Generator · inoperativeAPU GENERATOR INOPERATIVE. TROUBLESHOT APU GENERATOR SVST TEST IAW AMM 24-21-00. CONFIRM APU GENERATOR INOPERATIVE.SDR IPXA2020081258440Generator · inoperativeINSPECTION TYPE:N/A**ATB**- **EMERGENCY DECLARED**AFTER TAKEOFF WE LOST L&R UTILITY BUSSES. SHORTLY THERE AFTER, THE "APU GEN OFF" EICAS MESSAGE ILLUMINATED. WE DECLARED AN EMERG AS WE WERE DOWN TO 1 ELECTRICAL SOURCE. RETURNED TO DSMT/S APU GENERATOR SYS. PERSDR UIEA2020073091642Warning Light · false activationRIGHT GENERATOR FIELD OFF LIGHT ILLUMINATED. PERFORMED AN OPS CHECK OF THE RT IDG IAW AMM 24-11-00. OPS CHECKED GOOD, LIGHT EXTINGUISHED.SDR UIEA2020073091646Idg · malfunctionedREJECTED TAKEOFF FOR R GEN OFF STATUS AND SCREENS FLASHING AND GOING BLANK(<P>TRANSFERRED TO MDDR 131975 MEL 24-00-01-01. CAT B.<BR /></P><P>LP 1296050: PERFORMED T/S IAW FIM 24-20 FAULT TREE 801. REMOVED AND REPLACED R/H GCU (OFF PART: PN 734284F, SN 5695). CSDR AMCR20200727021Alternator · shortedUPON TAXI TO HOME BASE HANGAR, CREW REPORTED A AMBER RH ALTERNATOR FAIL CAS MESSAGE. GROUND CREW SAW WHITE SMOKE COMING FROM RH ENGINE COWL. AN INSPECTION REVEALED THE AC ALTERNATOR HAD INTERNALLY SHORTED AND MELTED SOME OF ITS WINDINGS. PROCEDURES FOR CESSNA SDR UIEA2020072171568Generator · trippedAPU GENERATOR OFF EICAS MESSAGE AFTER APU START ON LANDING. REMOVED AND REPLACED APU GENERATOR IAW AMM 24-21-01. OPS CHECKED GOOD.SDR ABXA20200720127Warning Message · illuminatedRIGHT BUSS ISOLATION MESSAGE IN FLIGHT. RIGHT IDG HIGH TEMP. AIRCRAFT WAS GROUNDED.SDR UIEA2020072181570Circuit Breaker · malfunctionedCREW DEBRIEF ON RT GENERATOR ISSUE, AFTER TAKE OFF, RT GENERATOR NEVER TRIPPED OFF, GENERATOR LIGHT AND ALL OVERHEAD LIGHTS AND CREW FLORESCENT LIGHTS WENT DIM, BRIGHT, AND DIM. EICAS MESSAGE FO TRANSFER MESSAGE CAME ON AND OFF WITH REGULAR CYCLES. 1 HOUR ISDR UIEA2020071701564Gcu · faultedLEFT GENERATOR OFF EICAS MESSAGE IN FLIGHT, RAN CHECKLIST, TURNED APU ON, MESSAGE REMAINED. REMOVED AND REPLACED THE LT GENERATOR CONTROL UNIT IAW AMM 24-22-02-004-001 AS PART OF T/S.SDR UIEA2020071701565Idg · underservicedRIGHT GENERATOR OFF EICAS MESSAGE, FL 360, TWO HOURS 20 MIN AFTER TAKE OFF WITH ASSOCIATED GENERATOR OFF LIGHT IN SWITCH. PERFORMED BPCU BITE IAW FIM 24-20 FT 801. RT GENERATOR OP TRIP MESSAGE RESET BPCU AND RT GEN CONT SWITCH, FOUND IDG UNDERSERVICED, SERVISDR UIEA2020071701566Gcu · failedAFTER SETTING TAKE OFF THRUST, RT ENG OFF G UTIL BUSS OFF, RT UTIL BUSS OFF, EICAS MESSAGES ILLUMINATED, COMPLIED WITH CHECKLIST. RT GEN INOPERATIVE. REMOVED & REPLACED THE GCU IAW AMM 24-22-02. OPS CHECKED NORMAL, PERFORMED ENGINE RUNS IAW AMM 71-00-00. SDR UIEA2020071751552Idg · malfunctionedL GEN OFF, AFTER ENGINE START. REMOVED AND REPLACED THE LT ENG IDG IAW AMM 24-11-01-404-002-004. OPERATIONAL TEST DONE IAW AMM 24-11-00-715-005, LEAK CHECKED GOOD. REMOVED AND REPLACED LEFT GENERATOR CONTROL UNIT IAW TASK 24-22-02-004-010.SDR UIEA2020071401541Idg · malfunctionedR GEN OFF EICAS IN FLIGHT. REMOVED AND REPLACED RT ENG IDG. CHECKED FOR OPEN CIRCUIT BETWEEN IDG TERMINAL N AND GROUND, NO CIRCUIT OPEN IAW WDM 24-21-11 / 24-21-21. ACCOMPLISHED OPS CHECK OF IDG, LEAK CHECK GOOD IAW AMM 24-11-01/401. RAN ENGINE IAW AMM 71-SDR UIEA2020071321533Gcu · warning messageRIGHT GEN OFF ILLUMINATED IN FLIGHT, SERVICED THE RT ENGINE IDG IAW AMM 12-13-03A. ACCOMPLISHED BITE TEST OF BPCU. REPLACED THE RT GCU IAW AMM 24-22-02. OPS CHECKED GOOD. NO LEAKS NOTED FROM IDG IAW AMM 71-00-00.SDR 2020FA0000333Alternator · failedON APPROACH FOR LANDING, ALT FLD CIRCUIT BREAKER POPPED / ALTERNATOR FAILURE / BURNING SMELL. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.SDR VNAA2020071111101Idg · failedON CLIMB OUT, THE RT ENGINE GENERATOR FAILED AT HIGH POWER. THIS CAUSED A FAILURE OF THE GENERATOR CONTROL, AS WELL AS A DEPRESSURIZATION OF HYD SYSTEM 3 AMONG OTHER THINGS. AN EMERGENCY WAS DECLARED BY ATC. MX REMOVED AND REPLACED THE NR 2 IDG AND OPS TESTED SDR UIEA2020062601402Bpcu · malfunctionedAPU GEN FAIL. REMOVED REPLACED BPCU, APU GEN OPS CHECK OK ON ENG RUN, NO FAILT NOTED IAW AMM 24-41-03, 71-00-00, AND 24-21-00. THIS CLEARS DMI 130294. PLACARD REMOVED. MCC NOTIFIED, T/I DL 0717.SDR ASAA2020062542835Oil Cooler · leakingAFTER ENGINE RUNS, FOUND THE NR 2 ENGINE IDG OIL COOLER LEAKING. GROUNDED - YES. REMOVED AND REPLACED NR 2 ENG OIL/AIR COOLER IAW AMM 24-11-21 PG 401. LEAK OPS CHECKED GOOD.SDR UIEA2020062601397Warning System · false activationHYD GEN ON STATUS MESSAGE DISPLAYED. PERFORMED TROUBLESHOOTING AS PER FIM 24-25 FAULT TREE 804 AND THE SYSTEM IS OK AT THIS TIME.SDR UIEA2020062301343Idg · underservicedLEFT GENERATOR DRIVE EICAS MESSAGE. ACCOMPLISHED NNC, SERVICED THE LT IDG IAW AMM 12-13-03/301. PERFORMED AN OPS TEST IAW AMM 71-00-00-301. OPS TESTED GOOD IAW AMM 24-11-00-715.SDR ASAA2020062232819Generator · failedAPU FAULT LIGHT ILLUMINATED DURING ATTEMPTED START. GROUNDED - YES. REF FIM 49-40 TASK 803 R/R APU GENERATOR. OP/LEAK CHK GOOD.SDR UIEA2020062201332Warning System · false activationRT IDG VALVE STATUS MESSAGE SHOWING. PERF VISUAL INSPECTION OF IDG, CHECKED IDG OIL LEVEL IAW 24-17-00, OIL LEVEL OK, NO DEFECTS/MSGS NOTED. PERF ENGINE; RUN (RT) IAW 71-00-00, OPS CHECK NORMAL AT THIS TIME.SDR ABXA2020062418069Generator · inoperativeENGINE DRIVEN GEN SYSTEMS IDG,GCB GE-RIGHT GEN INOP EICAS MESSAGE RIGHT GEN DRIV. AIRCRAFT WAS GROUNDED.SDR 2020FA0000303Connector · damagedLOSS OF ELECTRICAL POWER IN FLIGHT. REWIRED ELECTRICAL CONNECTIONS ON GENERATOR AND TEST RAN ENGINE.SDR P5CA2020061500193Warning Message · false activationL GEN OFF MSG ON DEPARTURE. RAN QRH TO CLEAR. PERFORMED L IDG OPERATIONAL TEST IAW AMM 24-11-00. OPS CHECK GOOD. NO FAULTS NOTED. SERVICED LEFT IDG IAW AMM 12-13-03.
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