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 HALA2008122800909Starter · defectiveETOPS SIGNIFICANT SYSTEM, APU WILL NOT START. PER FIM NEEDED TO CHANGE APU BATTERY PER AMM 24-31-04. CONDITION SAME. REMOVED AND REPLACED APU CONTROL ECU PER AMM 48-61-05 CONDITION SAME. REMOVED AND REPLACED APU TEMP SENSOR PER AMM 49-94-01 AND APU PRESS SSDR A6WA200940003Starter · malfunctionedDURING APU START EGT 715, RPM 6 FLAMES REPORTED SHOOTING OUT OF THE EXHAUST CM ACTION C/W PLACED ON MEL. R&R APU STARTER PER AMM 49-41-07. OPS CHECK GOOD. APU PARAMETERS NORMAL. REMOVED FROM MEL. PLACARD REMOVED.SDR UALA2008122206924Starter · faultyAPU FAILED TO START. FAULT LGT ILLUM AND EICAS MSG. APU FAULT DISPLAYED. ADDITIONAL START ATTEMPTS UNSUCCESSFUL. CREW COMMENTS: 4 ATTEMPTS UNSUCCESSFUL. EGT ROSE TO 790 RPM 21. AUTO SHUTDOWN. REMOVED & REPLACED APU STARTER. OP CHECKS GOOD.SDR HALA08121400883AController · malfunctionedETOPS SIGNIFICANT SYSTEM, APU AUTO SHUTDOWN. REPLACED APU CONTROL UNIT DUE TO SUSPECT BAD PART FROM STOCK. OPS CHECKED APU AND CONTOLLER OK IAW AMM 49-61-05.SDR UALA2008121206864Starter · defectiveAPU INOP, NO START ON GATE. ATTEMPTED START ON ARRIVAL. NO VOLTAGE DROP ON START, APU DOOR OPEN NORMALLY. WITH APU MAINT SWITCH IN TEST NO FAULTS ON APUC. ACPD FIM 49-40 TASK 812, CONFIRMED RELAY K24494 WORKING PROPERLY AND 28VDC ON TERMINAL E2 AT ELEC STASDR HALA2008120600878Ecu · failedETOPS SIGNIFICANT SYSTEM, APU FAILED TO START AFTER LANDING. APU FAULT "EICAS" ILLUMINATED. REMOVED AND REPLACED APU ECU PER AMM 49-61-00 FIG 103. NO DEFECTS NOTED, OK FOR SVC.SDR C2XA08IA234Starter Gen · malfunctionedIAH - FLIGHT 3020, THE CREW REPORTED A BURNING SMELL AFTER THE APU START. THE APU THEN FAILED AND WOULD NOT RESTART. THE AIRCRAFT RETURNED TO THE GATE WHERE MAINTENANCE PLACED THE APU ON MEL 49-00-00 CAT - C CTL NUMBER 157685, AND THE AIRCRAFT WAS APPROVED FSDR ASAA0853682Exciter · defectiveFAULT LIGHT ILLUMINATED WHEN STARTING APU. TROUBLESHOT REF FIM 49 40 00 810 802 NO IGNITION. REMOVED AND REPLACED EXCITER IGNITION UNIT REF M/M 49 41 31. OPS CHECK OK NORMAL START NOTED.SDR 2008UALA06185Exciter · defectiveAPU NO START. REPLACED EXCITOR BOX. APU OPS CHECKS OKAY.SDR MASA2008101600732Igniter · malfunctionedASH FLT 7044 IAD-LGA. SMOKE COMING FROM APU INLET. MX INSPECTED A/C AND FOUND NO EVIDENCE OF UNCONTAINED FIRE AND REPLACED IGNITOR.SDR ASAA0853537Starter Gen · failedBLUE MAINT LIGHT ON APU ILLUMINATED. PERFORMED FIM TASK 49 40 00 810 806 CONFIRMED FAULT REMOVED AND REPLACED STARTER GENERATOR REF MM 49 41 21 OPS & LEAK CHECK GOOD. CONFIRMED FAULT CORRECTED W CDU AND FIM TASK 49 40 00 810 806.SDR QXEA200801019Exciter · failedFLIGHT 2215. APU FAILED TO START, FLAME CAME OUT OF THE TAIL ON START ATTEMPT. PLACED THE APU ON MEL 49-00-1. CLEARED ON 9/28 BY REPLACING THE APU EXCITER AND IGNITER "B". OPERATIONAL CHECKS GOOD. RETURNED TO SERVICE. (K)SDR CA080916004Control Box · defective(CAN) PILOTS HAVE BEEN REPORTING INTERMITTENT SULPHUR SMELL IN THE ACFT. WHILE TROUBLESHOOTING, THE MECHANIC NOTICED THAT THE APU DOOR WAS OPEN AND APU MASTER AS OFF. WHEN THE APU SWITCH WAS CYCLED TO CLOSE THE DOOR, SPARKS STARTED TO APPEAR NEXT TO START SWITSDR ASAA0853479Starter Gen · malfunctionedMAINTENANCE ANNUNCIATOR ILLUMINATED UPON APU SHUTDOWN. REPLACED STARTER GENERATOR AND STARTER POWER UNIT.SDR DL76L081132Clutch · damagedAPU WILL NOT START. REMOVED APU STARTER AND FOUND CLUTCH DAMAGED. REMOVED APU. STARTED INSTALLING NEW APU. INSTALLED NEW APU PER AMM. RAN APU CHECKS GOOD. MCO AND PLACARD REMOVED.SDR SWIA200819877Contactor · damagedAPU STARTER CONTACTOR IN RT RELAY BOX IS DISCOLORED. (FOUND AT C-CHECK) REPLACED THE APU STARTER CONTACTOR IAW AMM 25-00-00.
SDR DLM88080598Relay · stuckOUTBOUND CREW OF FLT 782 CALLED MTC TO REPORT CLOCKS INOP. MX FOUND THE MAIN BATTERY CHARGER INOP AND BATTERIES LOW. REPLACED CHARGER AND BATTERIES AND CLEARED ITEM. WHEN CREW NEXT ATTEMPTED TO START APU THEY HAD A FAULT LIGHT AND ECU FAULTED THE STARTER MOSDR HALA0800501Ecu · malfunctionedETOPS SIGNIFICANT SYSTEM, APU SHUT DOWN AT THE GATE. REMOVED AND INSTALLED APU ECU PER MM 49-61-05. OPS CK GOOD.SDR 2008UALA01282Starter · faultyAPU WILL NOT START, FAULTS STARTER. REPLACED APU BATTERY PER MM24- 31-04 AND REPLACED STARTER MOTOR PER MM49-41-01. OPS CHECK OK. VERIFICATION FLIGHT CONFIRMS NORMAL OPERATION OF THE SUBJECT SYSTEM. AC OK FOR SERVICE.SDR SWIA200819236Igniter · unknownFLT 2585 - APU WOULD NOT START AND CABIN SMELLED OF FUEL. REPLACED BOTH IGNITER PLUGS WITH SERVICEABLE UNITS IAW AMM 49-41-05.SDR ASAA0852545Control Unit · unknownAPU START ATTEMPT AFTER LANDING. BOTH STARTS UNSUCCESSFUL WITH FAULT LIGHT. TROUBLESHOT PER FIM 49 60 TASK 801. NO CURRENT FAULTS.SDR HALA0800036Starter · failedETOPS SYSTEMS, APU FAULT, APU DOES NOT START. FOUND APU STARTER FAULT ON ECU. REPLACED APU STARTER PER AMM 49-41-01. OPS CHECK GOOD. OK FOR SERVICE.
SDR HALA0800021Igniter · failedETOPS SIGNIFICANT SYSTEM APU FAILED TO START "FAULT" LIGHT ILLUMINATED AND EICAS MSG "APU FAULT" DISPLAYED, ADD'L START ATTEMPTS UNSUCCESSFUL. REPLACED APU IGNITER PER MM49-41-02. OPS CK GOOD.SDR 2008UALA00264Starter · faultyAPU APUC DETECTED FAULT THAT WOULD CAUSE AUTOMATIC SHUTDOWN OF APU IN UNATTENDED MODE OPERATION, OR COMPLETE LOSS OF APUC BUSS ACTIVITY (BOTH L AND R 629) FOR 3 SECONDS AFTER THE APU MASTER CONTROL SWITCH HAS BEEN IN THE ON POSITION FOR TEN APU CONTROLLER DETESDR 2008UALA00127Starter · inoperativeAPU FAILED TO START AFTER TWO ATTEMPTS, FAULT LIGHT ON LAST ATTEMPT. CHK'D MAG CHIP DETECTRS OK, BIT APU CONTROL OK. REPLACED APU STARTER, OPS OK APU START.SDR ASAA0852456Starter Gen · faultyAPU "MAINT" LIGHT ILLUMINATED. VERIFIED FAULT CODE 49 41244. ACCOMPLISHED FIM 49 40 TASKS 805 806. REPLACED STARTER GENERATOR (REF MM 49 41 21 PG 401). GROUND VERIFICATION GOOD.SDR 2008UALA00052Starter · malfunctionedAPU NO START WITH FLAMES, RESTART NO HELP WITH FAULT LIGHT ON. SUSPECT FAULTY STARTER. REPLACED ELECT STARTER. OP CHECK NORMAL AC OK FOR SERVICE
SDR 2007UALA05205Starter · failedAPU AUTO SHUTDOWN WILL NOT RESTART. REPLACED APU STARTER. ALL OPS CHECKED OK. ECU SHOWED NO FAULT FOR AUTO-SHUTDOWN.
SDR HALA0700505Exciter · malfunctionedETOPS SIGNIFICANT SYSTEM, APU WILL NOT START. BITE ON APU ECU FAULTS NO LIGHT OFF. T/S PER FIM 49-11-00 FIG 107. REPLACED IGNITER PLUG, LEAD AND EXCITER BOX. APU STARTS NORMAL AND BITE CHECKS NORMAL. OK FOR SERVICE.SDR 470884Igniter · brokenTIP OF IGNITER BROKE OFF AND WAS FOUND DURING COMPLIANCE WITH SB45-28-12.SDR HALA0700465Exciter · inoperativeETOPS SIGNIFICANT SYSTEM: AFTER LANDING APU WOULD NOT START. REMOVED AND REPLACED IGNITION UNIT PER AMM 49-41-03.SDR ASAA0752195Starter Gen · faultyAPU "MAINT" LIGHT ILLUMINATED. PERFORMED BITE TEST OF APU REF FIM 49 60 TASK 801. MAINT MSG SHOWS NR 49 41244 START CONV SHOWS FAILED GENERATOR DIODE. REPLACED APU STARTER CONVERTER AND STARTER GENERATOR.SDR AMTA200700485Power Unit · inoperativeAPU WILL NOT START WITH BATTERY POWER ON. REMOVED AND REPLACED APU START POWER UNIT IAW AMM 49-41-71-4. OPS CHECK GOOD. (K)SDR HNAA0700181Contactor · seizedMAIN BATTERY TEMP AT 55 DEG AND VOLTAGE AT 15 VOLTS WITH MAIN AND AUX BATTERY CAUTION LIGHTS ILLUMINATED, AIRCRAFT RETURNED TO GATE AND SHUTDOWN POWER. WHEN EXTERNAL POWER APPLIED, FIRE DETECTION WARNING LIGHTS ILLUMINATED AND APU FIRE PANEL WAS BLANK, CREW NSDR HALA0700415Starter · failedETOPS SIGNIFICANT SYSTEM, APU FAILED TO START, FAULT LGT ILLUM AND EICAS MSG APU FAULT DISPLAYED, ADDITIONAL START ATTEMPTS UNSUCCESSFUL. ACCOMP FIM 49-11-00, APU ECU BITE HAD A/C START CIRCUIT MSG, REPLACED APU STARTER PER AMM 49-41-01 AND START CIRCUIT RELASDR F3LA200700249Starter · seizedMAINTENANCE REPORTED ELECTRICAL SMOKE ODOR IN APU COMPARTMENT AFTER APU AUTO SHUTDOWN. INSPECTED APU COMPARTMENT IAW TSM 24-00-00-810-823 AND IDENTIFIED ODOR WAS FROM STARTER. FOUND APU SENSE WIRE HEAT DAMAGED AND HEAT SHRINK ON POSITIVE WIRE DAMAGED. STARTSDR DXTA200702493Starter · arcedDURING DESCENT & STARTING APU, BUS CTRL 2 FAIL CAS MESSAGE CAME ON. BUSS CONTROL SWITCH ON PANEL SWITCHED TO EMERGENCY AUTOMATICALLY WHILE OTHER ASSOCIATAED CAS MSGS. APU ABORTED START SEQUENCE AUTOMATICALLY. RT AVIONICS LOST POWER & EICAS ONLY DISPLAY LT ISDR 2007UALA03780Starter · malfunctionedAPU START SYSTEM APUC DETECTED FAILURE IN THE ELECTRIC STARTER, FUEL SCHEDULING, IGNITION, OR LUBE DEPRIME SYSTEMS OR NO SIGNAL FROM ELMS TO THE APUC. 10-16-07 REPLACED APU IGNITOR PLUG NR 1 PER MM49-41-02, AND IGNITION LEAD NR 1 PER MM49-41-04. APU BITSDR HALA0700383Exciter · inoperativeETOPS SIGNIFICANT SYSTEM, APU WOULD NOT START AFTER LANDING. REPLACED IGNITION EXCITER, IGNITION LEAD AND IGNITION PLUG PER AMM 49-41-03,49-41-02,49-41-01. OPS CHECK GOOD.SDR HALA0700381Ecu · malfunctionedETOPS SIGNIFICANT SYSTEM, APU WOULD NOT START ON GROUND TRIED STARING TWICE 1ST APU HUNG AT 30 PERCENT 2ND TIME HUNG AT 18 PERCENT. REMOVED AND REPLACED APU ECU BITE CHECK GOOD. OPS CHECK GOOD WORK DONE IAW AMM 49-61-05.SDR HALA0700350Valve · stuckETOPS SIGNIFICANT SYSTEM, BTB, APU HAD AUTO SHUT DOWN FAULT LT ILLUMINATED. F/A HEARD UNUSUAL NOISE BEHIND AFT GALLEY. FOUND SURGE VALVE STUCK IN CLOSED POSITION REMOVED AND REPLACED SURGE CONTROL VALVE PER AMM 49-53-01, OPS CK OK. NO FAULTS NOTED APU OK TOSDR HALA0700349Battery · weakETOPS SIGNIFICANT SYSTEM, UNABLE TO START APU. EICAS MESSAGE APU FAULT. FOUND MINI FLAG 34 DURING BITE OF APU CONTROL UNIT, REPLACED APU BATT PER M/M. APU STARTED SEVERAL TIMES SATISFACTORLY. BITE PROCEDURE 49-11-00 FIG 103 M/M24-31-04. NO FAULTS PRESENTSDR 2007UALA02380Switch · faultyAPU WOULD NOT START. STARTED APU BY PULLING THE REMOTE FIRE INDICATION. [08-08-07] REPLACED APU FIRE SHUT DOWN SWITCH.SDR HALA0700259Starter · malfunctionedETOPS SIGNIFICANT SYSTEM, APU ON START UP SHOWED APU FAULT AND SHUT DOWN AUTOMATICALLY EICAS MSG APU FAULT. BITE CK ECD "START ABORTED" FAULT. FOUND STARTER BRUSH IND LOW/BATT VOLTAGE LOW W/LOAD. REMOVED AND REPLACED APU BATT PER MM 24-31-04. REMOVED AND RSDR HALA0700215Starter · inoperativeETOPS SIGNIFICANT SYSTEM, VERIFICATION FLIGHT FOR APU COMPLETE, APU OPERATES ABNORMALLY. DID NOT START. FAULT LIGHT ON. REMOVED AND REPLACED APU STARTER PER AMM 49-41-01-004-001 APU OPS CHECK NORMAL AT THIS TIME.SDR HALA0700210Ecu · malfunctionedETOPS SIGNIFICANT SYSTEM, APU WOULD NOT START AFTER 2 ATTEMPTS. REMOVED AND REPLACED ECU AND RESEATED CONNECTOR AT APU COMPARTMENT. OPS CHECK GOOD, WORK DONE IAW AMM 49-61-05.SDR ANCF200700009Contactor · failedAPU FAILED TO START FAULT LIGHT ILLUM AND EICAS MSG. APU FAULT DISPLAYED, ADDITIONAL START ATTEMPTS UN SUCCESFULL. VISUALLY SMOKE WAS DETECTED IN THE APU AREA AND APU FIRE EXTINGUISHER SYSTEM WAS USED. IN ACCORDANCE WITH WDM 49-41-11 PAGE 1 THE WIRES W020-0SDR AMTA200700213Starter Gen · malfunctionedAPU WILL NOT START. REPLACED STARTER GENERATOR. OPS CHECK NORMAL. (K)SDR AMTA200700211Starter Gen · inoperativeAPU GEN INOPERATIVE. REMOVED AND REPLACED APU GEN OPS CHECK GOOD IAW 49-41-21-4. (K)SDR DXTA200702124Starter · failedAPU SHUTDOWN AFTER A BURNING ODOR PRESENT IN THE CABIN. APU SYSTEM FAIL FOLLOWED THE SHUTDOWN. [4-27-07] REMOVED AND REPLACED APU STARTER GENERATOR IAW 680 MM CHPT 49-40-00. LEAK AND OPS CHECK GOOD
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