JASC 4940
Service difficulty reports · 1,424
Reports filed under 4940 · APU Start/Ignition 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 = '4940' 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 = '4940' 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 AALA201709229033Seal · leakingODOR IN CABIN AND FLIGHT DECK DURING DESCENT. FLIGHT ATTENDANTS AND COCKPIT CREW BOTH CONFIRMED A STRONG ODOR. REPLACED THE STARTER CLUTCH SEAL. AIRCRAFT WAS GROUNDED.SDR UIEA2017091701680Igniter · damagedAPU FAULT EICAS. REMOVED AND REPLACED THE IGNITOR PLUG AND CHECKED GOOD IAW AMM 49-41-01.SDR UIEA2017091601677Starter · malfunctionedBTB EICAS MESSAGE FOR RT ENGINE STARTER, ABORTED START, DUCT PRESSURE AT START 9 PSI MAX, ACCOMPLISHED APU ECU BITE CHECK IAW AMM 49-61-05, OPS CHECKED NORMAL.SDR ASAA2017091121911Exciter · failedAPU WONT START. ACFT GROUNDED. REMOVED AND REPLACED APU EXCITER, LEAD, AND IGNITER. OPS CHECKED GOOD IAW AMM 49-41-31, 49-41-51, AND 49-41-52.SDR ASAA2017082821741Converter · failedAPU FAILED TO START, FAULT LIGHT ILLUMINATED. CDU SHOWS FAULT CODE 49-41254 - SCU SHOWS START SYSTEM INOPERATIVE. ACFT GROUNDED. ACCOMPLISHED FIM 49-40, TASK 821. REPLACED SGU IAW AMM 49-41-21 AND AMM 49-41-61. LEAK AND OPS CHECKED GOOD. SGU LEAK AND OPS CHESDR ASAA2017082721724Power Unit · failedAPU FAULT LIGHT ILLUMINATED DURING START. PERFORMED APU BITE TEST. DISPLAYED MESSAGE 49-41255 START POWER UNIT SHOWS HIGH TEMPERATURE. NO APU ROTATION SHUTDOWN. ACFT GROUNDED. TROUBLESHOT IAW FIM 49-40 TASK 815. COULD NOT DUPLICATE DISCREPANCY. FOUND SAME MESSDR UIEA2017082501546Starter · leakingAPU INOPERATIVE DUE TO AN OIL LEAK. LOCATED LEAK TO BE COMING FROM STARTER. R & R STARTER MOTOR IAW 49-41-01. RAN APU FOR 30 MINUTES IAW 49-11-00, NO FAULTS NOTED, NO LEAKS NOTED AT THIS TIME.SDR UIEA2017081801505Apu · malfunctionedAPU DID NOT START ON GROUND. PERFORMED ECU BITE TEST & NO FAULT NOTED. OPS CHECKED GOOD IAW AMM 49-11-00.SDR UIEA2017082101512Charger · faultedAPU BATTERY CHARGER IS FAULTY. R & R APU BATTERY CHARGER IAW AMM 24-31-05.SDR UIEA2017082101510Battery · inoperativeAPU WILL NOT START. APU FAULT DISPLAYED. R & R THE APU BATTERY AND CHARGER IAW AMM 24-31-04.SDR UIEA2017081401471Starter · failedAPU COLD SOAK START FAILED ON THREE ATTEMPTS. REMOVED AND REPLACED THE STARTER , GROUND TESTED OK IAW AMM 49-41-01.SDR HALA2017080800216Starter · failedAPU FAULT ON START AFTER LANDING. APU STARTER REMOVED PER AMM ZB CAS 5489. REMOVED & REPLACED STARTER CLUTCH IAW MM 49-41-06 & INSTALLED NEW STARTER MOTOR IAW AMM 49-41-01. OPS GOOD.SDR ASAA2017073121513Exciter · faultedFAULT LIGHT ILLUMINATED UPON ATTEMPTING TO START APU. ACFT GROUNDED. REMOVED & REPLACED APU IGNITION UNIT IAW AMM 49-41-31. APU STARTED NORMAL IAW AMM 49-11-00. NO RECENT FAULTS.SDR UIEA2017072801348Ecu · malfunctionedAPU RELIABILITY COLD START FAILED ON 3 ATTEMPTS DURING FLT. PERFORMED BITE PROCEDURE ON APU ECU IAW FIM 49-11. RESET APU ECU APU START NORMAL.SDR ASAA2017072721473Exciter · failedAPU INOPERATIVE. ACFT GROUNDED. REMOVED AND REPLACED APU IGNITION EXCITER UNIT IAW AMM 49-41-31. OPS CHECKED GOOD.SDR UIEA2017072701330Starter · failedAPU INOPERATIVE, FAULT LIGHT ILLUMINATED. REMOVED AND REPLACED APU STARTER MOTOR IAW AMM 49-41-00, OPS CHECKED NORMAL.SDR UIEA2017072701321Ecu · malfunctionedAPU RELIABILITY, COLD START COMPLIED WITH. UNSUCCESFUL AFTER 3 ATTEMPTS. APU FAULTS ALL 3 ATTEMPTS. PERFORMED BITE PROCEDURE ON APU ECU IAW FIM 49-11F/T 958. NO FAULTS NOTED. RESET APU ECU, STARTED NORMAL.SDR UIEA2017072501304Apu · malfunctionedAPU FAILED TO START AFTER LANDING. PERFORMED A BITE ON APU ECU IAW FIM 49-11 FT 958. NO FAULTS NOTED. RESET APU ECU, APU START NORMAL.SDR HALA2017072400213Igniter · inoperativeAPU VERIFICATION FAILED. APU FAULT AFTER START AT TOP OF DESCENT FL410. T/S PER A330 TSM 49-41-00-810-801-A. REPLACED BOTH APU LUBE AND SCAN FILTERS IAW A330 AMM 49-91-41. ALSO, REPLACED BOTH IGNITER PLUGS IAW A330 AMM 49-41-41. GROUND OPS CHECKED GOOD. RAN APSDR UIEA2017071701231Apu · malfunctionedAPU FAILED TO START DURING TAXI IN. ACCOMPLISHED APU BITE PROCEDURES IAW FIM 49-11 /FT 103. NO CODES OR FAULTS FOUND. INSPECTED APU, APU BATTERY, AND STARTER. NO DEFECTS NOTED. PLUGGED IN GROUND POWER UNIT IN , APU STARTED NORMAL . OPERATED APU NUMEROUSSDR ASAA2017071521391Exciter · faultedAPU FAILS TO START FAULT LIGHT ILLUMINATED. ACFT GROUNDED. REMOVED AND REPLACED APU IGNITER EXCITER BOX IAW AMM 49-41-31. OPS CHECKED GOOD.SDR ASAA2017071521388Ignition Sys · failedAPU WILL NOT START. ACFT GROUNDED. VERIFIED CDS REPORTS FCU RESOLVER CIRCUIT SHOWS OPEN. REMOVED AND REPLACED APU FCU IAW AMM 49-31-11/401. FAULT CODE CLEAR. STILL APU WILL NOT START, NO FLAME SHUTDOWN. NO NOISE FROM THE IGNITER PLUG DURING APU START NOTED.SDR UIEA2017071401220Starter · inoperativeAPU WILL NOT START AFTER FLIGHT. REMOVED AND REPLACED THE APU STARTER IAW AMM 49-00-00.SDR UIEA2017071701228Ecu · failedAPU FAILED TO START. FOUND APU ECU FAILED. REMOVED AND REPLACED ECU IAW AMM 49-61-05-1401.SDR UIEA2017071401221Starter · inoperativeAPU FAULT EICAS MESSAGE. APU DID NOT START. R & R THE APU STARTER IAW AMM 49-11-01, OPS CHECKED GOOD, NO DEFECT NOTED AT THIS TIME.SDR UIEA2017071201178Plug · erodedAPU TIP ERRODED. REMOVED AND REPLACED IGNITOR PLUG PER EO 6479A003-CS OPS CHECK GOOD.SDR UIEA2017071201179Starter · defectiveAPU STARTER BRUSH INDICATOR IS RECESSED BELOW TOP OF PROTECTIVE GUARD. REMOVED AND REPLACED STARTER PER AMM 49-00-00 OPS CHECK GOOD.SDR UIEA2017071201152Ignition Lead · erodedAPU IGNITION LEAD TIP IS ERODED. REMOVED AND REPLACED APU IGNITOR LEAD. PERFORMED APU NORMAL OPERATION START TEST. APU TEST CHECKED GOOD IAW AMM 49-11-00.SDR UIEA2017071201163Igniter · corrodedAPU IGNITER TIP CORRODED. REMOVED AND REPLACED APU IGNITER IAW AMM 49-41-02-404-006. PERFORMED AN OPS TESTED IAW AMM 49-11-00-802-002.SDR UIEA2017071201164Battery · dischargedAPU DID NOT CRANK, APU DOOR FAULT ON LOWER EICAS. TROUBLESHOT THE SYSTEM AND FOUND THAT APU DOOR ACTUATOR WAS NOT EQUIPPED WITH PROPER VOLTAGE TO OPERATE. CHARGED THE APU BATTERY WITH APU BATTERY CHARGER IAW AMM 24-31-05-424-007, STEP E. APU OPS CHECKED GOOSDR P5CA2017070700220Battery · inoperativeAPU START USING BATTERY MODE, SECOND TIME FAILED TO START. REPLACED APU BATTERY IAW AMM 24-31-04, & REPLACED THE APU CRANK CONTACTOR IAW AMM 49-41-05. APU OPS TESTED NORMAL IAW AMM 49-11-00.SDR ASAA2017070521289Exciter · failedON TAXI IN APU FAULT LIGHT ILLUMINATED. FOLLOWED QRH PROCEDURE. APU SWITCH OFF, NO RESTART ATTEMPTED. GROUNDED - YES. FAULT MESSAGE 49-41011 (NO FLAME SHUTDOWN). PERFORMED FIM TASK 49-40-00 TASK 802. REMOVED AND REPLACED IGNITION EXCITER UNIT WITH NEW PER AMM SDR UIEA2017063001079Starter · inoperativeAPU WILL NOT START. REMOVED & REPLACED THE STARTER MOTOR IAW AMM 49-41-004. OPS NORMAL,SDR AALA201706289025Relay · faultyTHE AIRCRAFT WAS GROUNDED. R CSD WARN LIGHT (LOW OIL PRESS) FIRST THEN R GEN INOP. DISCONNECTED R CSD PER PROCEDURE. APU WOULD NOT START AT 30,000 OR 28,000 OR 26,000 FEET. NO FAULT LIGHT. THE FLIGHT DECLARED AN EMERGENCY AND DIVERTED TO SDF WITHOUT FURTHER SDR ASAA2017062421178Igniter · inoperativeAPU WONT START, TRIED 3 TIMES. ACFT GROUNDED. PERFORMED APU BITE IAW FIM 49-60, TASK 801. APU HAS FAULT MSG 49-41011 NO FLAME SHUTDOWN. COMPLIED WITH FIM TASK 49-40 TASK 802, CDS REPORTS NO FLAME LAST THREE STARTS AS RECOMMENDED BY FIM TASK. REMOVED AND REPLASDR ASAA2017060820986Ignition Sys · faultedAPU FAULT LIGHT ILLUMINATED DURING APU START. APU WOULD NOT START AFTER FOLLOWING QRH. ACFT GROUNDED. APU BITE DONE IAW AMM 49-61-00-700-801. FAULT CODE 49-41011 FOUND. CONNECTOR P13 DISCONNECTED AND CHECKED FOR POWER IAW WDM 49-41-11. POWER CHECKED GOOD.SDR UIEA2017060500926Exciter · failedAPU FAILED TO START. APU EXCITER REMOVED AND REPLACED IAW AMM 49-41-03, REV 121. APU CONTROL UNIT BITE TEST AND APU STARTING AND OPERATION CARRIED OUT IAW AMM 49-61-05 AND & AMM 49-11-00, REV 121. FOUND SATISFACTORY.SDR HALA2017060700143Igniter · not reportedETOPS SIGNIFICANT SYSTEM - APU NO START (APU AUTO SHUTDOWN). REMOVED AND REPLACED BOTH APU IGN PLUG PER AMM 49-41-41. GND REPORT OK. SYS TEST OK. OK FOR SVC.SDR UIEA2017060600949Battery · malfunctionedAPU INFLIGHT START FAILED. BITE CHECKED ECU, FOUND FAULTED START CIRCUIT . REMOVED AND REPLACED APU BATTERY IAW AMM 24-31-04 AND APU BATTERY CHECKED OK. MONITOR APU BATTERY VOLTAGE ON APU START, OPS OK. IAW FIM 49-11 TREE 958 - REPLACED THE BATTERY CHARGER SDR 2017FA0000328Exciter · failedON ARRIVAL, APU AUTO SHUTDOWN DURING TAXI IN. REPLACED APU EXCITER UNIT IAW AMM 49-41-38.SDR HALA2017050300128Exciter · failedAPU FAULT. APU FAILED AFTER 3 ATTEMPS AFTER LANDING. REMOVED AND REPLACED IGNITION EXCITER BOX IAW AMM 49-41-38. OPS CHECKED OK. 1ST ATTEMPT GOOD START.
OK FOR SERVICE.SDR ASAA2017052520899Exciter · faultedAPU FAULT LIGHT ON START. FOLLOWED QRH PROCEDURES. STILL HAD FAULT LIGHT. ACFT GROUNDED. ON APU START UP, FOUND FAULT 49-41180, IGNITION UNIT CIRCUIT SHOWS HIGH CURRENT. IAW FIM 49-40 TASK 804, REPLACED EXCITER UNIT IAW AMM 49-41-31. TO ADDRESS PREVIOUS FAULSDR ASAA2017051820829Ignition Sys · failedAPU FAILED TO START WITH A FAULT LIGHT. ACFT GROUNDED. ACCOMPLISHED AMM 49-40, TASK 802. REMOVED AND REPLACED THE IGNITION UNIT IAW AMM 49-41-31 AND IGNITER PLUG IAW AMM 49-41-51 OPS CHECKED GOOD.SDR ASAA2017051820812Starter Gen · failedDURING APU START, A FAULT LIGHT ILLUMINATED. ACFT GROUNDED. APU SHOWS NO ROTATION FAULT. REMOVED AND REPLACED THE APU STARTER GENERATOR ASSEMBLY IAW AMM 49-41-21. OPS CHECKED GOOD, LEAK CHECKED GOOD, NO FURTHER DEFECTS NOTED.SDR UIEA2017051600798Apu · malfunctionedAPU DID NOT START AFTER LANDING. EICAS MESSAGE FOR APU FAULT. PERFORMED FIM 49-11,FAULT TREE 958. APU BITE PROCEDURE PERFORMED WITH NO FAULTS NOTED. RESET ECU PERFORMED WITH NO FAULTS NOTED. RESET ECU PERFORMED, APU NORMAL START IAW AMM 49-11-00 AND STARSDR HALA2017050500112Igniter · failedAPU FAULT ECAM DURING START UP. ONLY GOT UP TO 17 PERCENT, THEN AUTOSHUTDOWN. TRIED TO START APU TWO TIMES DURING DESCENT. BOTH WITH AUTO SHUTDOWN & APU FAULT ECAM. TROUBLESHOT IAW TSM 49-00-00. FOUND IGNITER AT FAULT. REMOVED AND REPLACED BOTH APU IGNITER SDR ASAA2017050420638Warning Light · intermittentSTARTING APU ON GROUND, RECEIVED A FAULT LIGHT. ACFT GROUNDED. PERFORMED FIM 49-40, TASK 802, NO FLAME SHUTDOWN FAULT ISOLATION. PERFORMED APU START, OPERATIONAL CHECKED OPERATES CORRECTLY, DETERMINED AN INTERMITTENT FAULT.SDR UIEA2017042900676Warning Light · false activationAPU FAULT LIGHT AFTER START ATTEMPT. APU ECU BIT NO LATCHED FAULTS. OPS CHECKS GOOD IAW AMM 49-11-988. PERFORMED SUCCESS FULL APU COLD SOAK.SDR ASAA2017042620541Exciter · failedAPU WILL NOT START. ACFT GROUNDED. APU BITE COMPLETED IAW FIM 49-60 TASK 80, NO CURRENT FAULTS LOGGED. FAULT HISTORY SHOWS FAULTS FROM OVER 60 DAYS AGO. APU START SWITCH S248 REMOVED AND REPLACED IAW WDM 49-6211. NO HELP, AND FAULT 49-41181 IGNITION UNIT CISDR ASAA2017042620544Exciter · failedAPU FAULT LIGHT ON DURING START. DID NOT EXTINGUISH. ACFT GROUNDED. REPLACED APU IGNITION UNIT IAW AMM 49-41-31-400-801. OPS CHECKED GOOD.
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