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.

SDR HALA2009120400567Valve · unknownSUP - ETOPS SIGNIFICANT SYSTEM - AFTER LANDING 2 ATTEMPTS AT APU START UNSUCCESSFUL."APU FAULT" EICAS.//PERFORMED BITE ON ECU FAULTED REVERSE FLOW. REMOVED AND REPLACED APU CHECK VALVE PER FIM 49-11-00/101 AND INSTALLED VALVE PER AMM 36-11-11-404-008. NO LEAKSDec 4, 2009 · N583HA · Boeing 767300SDR UALA2009113003701Igniter · inoperativeAPU WOULD NOT START AFTER 3 ATTEMPTS. ALSO APU FAULT EICAS. BOX BITE NO START WITH NO AUDIBLE IGNITION ON START ATTEMPTS. REPLACED IGNITER PLUG, LEAD AND IGNITION UNIT. APU STARTS NORMALNov 29, 2009 · N676UA · Boeing 767322SDR UALA2009113003668Starter · failedAPU NO START. AHM INDICATES FDE 49100200 WITH MSG 4910620. APU PERF TREND MONITORING (APTM) ALSO INDICATE E-STARTER FAILURE. REPAIRED OR REPLACED AS NEEDED E-STARTER. FOUND MSG ON MAT 49-10620 ACTIVE ON ARRIVAL. CARRIED OUT T-S. REPLACED APU CRANK RELAY, Nov 25, 2009 · N792UA · Boeing 777222SDR UALA2009111803604Motor · malfunctionedAPU CONTROLLER STATUS MSG DISPLAYED. MAINT MSG 49-10760. MAINT MSG IS FOR BRUSH ON ELECTRIC MOTOR. REPLACED APU ELECTRIC START MOTOR, OPS CHECK GOOD.Nov 18, 2009 · N787UA · Boeing 777222SDR C2XA09IA275Starter Gen · malfunctionedIAH - FLIGHT 3020, THE CREW REPORTED A BURNING SMELL AFTER ENGINE 1 START. THE AIRCRAFT RETURNED TO THE GATE WHERE MAINTENANCE INSPECTED THE AIRCRAFT AND DETERMINED THE SMELL TO BE CAUSED BY THE APU. THE APU WAS PLACED ON MEL, AND THE AIRCRAFT WAS APPROVED FOct 28, 2009 · N14933 · Emb EMB145EPSDR ASAA0956824Converter · faultyFOUND MAINT BLUE LIGHT ON FOR APU. FOUND FAULT CODE 49 41244. REPLACED APU START CONVERTER UNIT REF MM 49 41 61 000 801. RAN APU & TESTS OK PER SAME REF NO FAULTS. ACCOMP FIM 49 40 TASK 806. REPLACED STARTER GENERATOR LEAK & OPS NORMAL REF M/M 49 41 21 00Oct 18, 2009 · N565AS · Boeing 737890SDR UALA2009100603142Exciter · defectiveAPU HARD TO START. BITE BOX FAULTS NO LIGHT LRU IGNITER LOST. REPLACED IGNITER, LEAD AND EXCITER. ACCOMPLISHED SEVERAL START WITH NO FAULTS DISPLAYED.Oct 6, 2009 · N596UA · Boeing 757222SDR DL76L091570Starter · damagedAPU WILL NOT START. FOUND STARTER WITH HOLE BURNED IN CASE. REMOVED AND REPLACED STARTER PER AMM, LEAK CHECK AND OPS CHECK NORMAL.Sep 30, 2009 · N199DN · Boeing 767332SDR UALA2009092303012Starter · faultyTWO ATTEMPTS APU FAULTS. REPLACED APU STARTER & APU BATTERY. OPERATIONAL CHECKS ARE NORMAL.Sep 21, 2009 · N597UA · Boeing 757222SDR HALA2009091400404Starter · failedETOPS SIGNIFICANT SYS - VERIF FLIGHT FOR APU NOT COMPLETED, APU LOAD START UNSUCCESSFUL. "APU FAULT" DISPLAYED APU SPOOLED UP TO 71 PERCENT THEN QUIT. IAW FIM 49-41-00 & INFO NOTED, TROUBLESHOT APU IAW FIM. APU ECU HAD APU START ABORTED MESSAGE. APU VERY SLSep 12, 2009 · N582HA · Boeing 76733AERSDR ASAA0956538Starter Gen · faultyAPU FAILED WITH FAULT LIGHT. STARTED APU UNABLE TO CONFIRM DISCREPANCY. PERFORMED BITE CHECK OF APU. FOUND FAULT CODE 49 41012 FOR FLT LEGS 0 1 & 2 & 49 41248 FOR FLT LEGS 3 & 4 PERFORMED FIM 49 40 00 810 803 A F.1 4(A E). REPLACED STARTER/GEN REF MM 49 41Sep 3, 2009 · N560AS · Boeing 737890SDR HALA2009082800389Ecu · faultedETOPS SIGNIFICANT SYS - APU FAILED TO START. APU FAULT EICAS MSG DISPLAYED AND APU FAULT DISCRETE ILLUM WHEN START SW SELECTED OFF. APU BITE FAULTS ECU. REPLACED APU ECU IAW AMM 49-61-05-404-008. APU CKS OK.Aug 28, 2009 · N584HA · Boeing 7673G5SDR SWIA200922450Terminal · arcedAPU STARTER MOTOR POSITIVE TERMINAL STUD HAS ARCING. (SVC CHECK) REPLACED POSITIVE RING TERMINAL AND APU STARTER.Aug 25, 2009 · N752SK · Cndair CL6002C10SDR UALA2009082102583Starter · failedAPU CONTROL APUC DETECTED FAILURE OF REDUNDANT CONTROL FUNCTION OR LOSS OF ONE ARINC 629 CHANNEL. STATUS REPLACED APU STARTER. INSTALLATION TEST CHECKS NORMAL. APU OPS NORMAL.Aug 19, 2009 · N222UA · Boeing 777222SDR DXTA2009081403757Igniter · failedDURING DESCENT TRIED TO START THE APU. GOT THE "APU FAIL" LIGHT AFTER HITTING THE START SWITCH. VISUAL INSP SHOWS SIGN OF A FIRE NEAR THE INTAKE OF THE APU. GAINED ACCESS TO APU EXTERIOR AND ACCOMPLISHED VISUAL INSP OF EXTERIOR COMPONENTS AND ACCESSORIES IAAug 13, 2009 · N983QS · Cessna 750SDR HALA2009080500351Exciter · failedETOPS SIGNIFICANT SYS - DURING OVERNIGHT MX APU FAILED TO START. IN DICATED 20 PERCENT RPM BUT NO LIGHTOFF. T/S IAW FIM 49-61-05 FIG 107. REPLACED IGN PLUG IAW MM 49-41-02 NO HELP. REPLACED LEAD IAW MM49-41-01, NO HELP. REPLACED EXCITER IAW MM 49-41-03. OAug 5, 2009 · N580HA · Boeing 76733ASDR UALA2009072802261Starter · failedAPU FAILED TO START. APU WILL REACH 33 PERCENT AND OVER 700 EGT. FOUND STARTER CLUTCH FAILURE. INSPECTED MAG. PLUGS AND REPLACED LUBE PRESSURE AND SCAVENGE FILTERS, NO METAL NOTED. REPLACED STARTER CLUTCH. REPLACED STARTER. OPS AND LEAK CHECK'S OK.Jul 27, 2009 · N677UA · Boeing 767322SDR MASA2009072600232Starter · seizedASH FLT 7145 SYR - IAD HAD A STRONG FUEL SMELL IN FLIGHT DECK WHEN OPERATING APU. MX REMOVED AND REPLACED STARTER AND FUEL SOLENOID.Jul 26, 2009 · N154SF · Cndair CL6002B19SDR UALA2009072702213Starter · faultyAPU CONTROL APUC DETECTED FAILURE OF REDUNDANT CONTROL FUNCTION OR LOSS OF ONE ARINC 629 CHANNEL. STATUS MSG01- ACTIVE TAXI IN HARD; ELECTRIC STARTER MOTOR HAS BRUSH WEAR. DB- APU CONTROLLER (APUC) MSG02- ACTIVE TAXI IN HARD; ELECTRIC STARTER MOTOR HAS BRUSJul 25, 2009 · N209UA · Boeing 777222SDR MASA2009072300225Terminal · defectiveASH FLT 2689 CLT-SAV. APU AUTO SHUT DOWN WITH BURNING SMELL IN CABIN. MX REPLACED STARTER TERMINAL LUG.Jul 23, 2009 · N911FJ · Cndair CL6002D24SDR UALA2009072302196Starter · failedSTATUS MSG APU CONTROL. REPLACED APU BATTERY FOR BORROWED ONE. APU NO START. REPLACED APU CHARGER, NO HELP. REPLACED STARTER MOTOR, STARTS NORMAL.Jul 23, 2009 · N787UA · Boeing 777222SDR UALA2009071402069Exciter · faultyAPU WILL NOT START. REPLACED IGNITER PLUG, NO HELP. REPLACED LEAD, NO HELP. REPLACED EXCITER. REPLACED APU COOLING AIR SHUTOFF VALVE. REPLACED APU AIR INLET DOOR ACTUATOR. NUMEROUS APU STARTS ACCOMPLISHED, ALL OPS & INDICATIONS NORMAL.Jul 13, 2009 · N661UA · Boeing 767322SDR ASAA0956151Starter Gen · failedAPU FAULT LIGHT ILLUMINATED WHEN TRYING TO START APU. REPLACED APU STARTER/GENERATOR REF MM 49 41 21, OPS NORMAL.Jul 5, 2009 · N577AS · Boeing 737890SDR HALA2009061500248Starter · failedETOPS SIGNIFICANT SYSTEM, APU VERIFICATION START ATTEMPT, UNSUCCESSFUL. REPLACED APU START RELAY K117 COND SAME. APU START CHECK FAULT PER FIM 49-11-00. REMOVED AND REPLACED STARTER AND CLUTCH ASSY PER AMM 49-41-01 AND 49-41-06. GRND RUN OPS CK GOOD. PRECJun 15, 2009 · N586HA · Boeing 7673G5SDR ASAA0955878Converter · failedBLUE "MAINT" LIGHT ILLUMINATED WHEN APU WAS STARTED. FOUND CODE 49 41244 IN CDU. ACCOMPLISHED FIM TASK 49 40 00 810 806 THRU F2E. REMOVED & REPLACED STARTER GENERATOR PER AMM 49 41 21. NO HELP FAULT CODE STILL PRESENT. REQUIRES START CONVERTER UNIT. MAINJun 6, 2009 · N562AS · Boeing 737890SDR DL76S090918Starter · overheatedAFTER APU START NOTICED ACRID SMELL IN CABIN. NO VISIBLE SMOKE. FOUND STARTER ON APU BURNED. APU BATTERY AND CHARGER DEAD. REMOVED AND REPLACED APU BATTERY/CHARGER AND STARTER IAW AMM. CHECKED SPRAG CLUTCH NTF. ACFT OK FOR SERVICE.May 22, 2009 · N136DL · Boeing 767332SDR UALA2009051101338Starter · faultyAPU FAILED TO START. FAULT LGT ILLUM AND EICAS MSG. APU FAULT DISPLAYED. FOUND STARTER DRAGGING DOWN BATTERY VOLT AND GETTING HOT. REPLACED STARTER, OPS CHECK GOOD.May 8, 2009 · N547UA · Boeing 757222SDR UALA2009050101269Starter · faultyAPU WILL NOT START. APU CHECK SHOWS BAD STARTER. REPLACED STARTER, NO HELP, NO START. APU BATTERY DROPS TO 12V ON START BUT NO RPM. TRIED TO SPIN TURBINE FROM EXHAUST WOULD ONLY MOVE AN INCH BACK AND FORTH, LOCKED UP. PULLED CHIP DETECTORS PER SAMC FOUND May 1, 2009 · N547UA · Boeing 757222SDR DL76G090784Starter · failedAPU FAILED TO START. FOUND APU STARTER INOP. REMOVED AND REPLACED APU STARTED PER MM. OPS NORMAL.Apr 29, 2009 · N1608 · Boeing 767332SDR QXEA2009050400306Charger · failedSEA - APU BATT CHARGER STATUS MESSAGE. RETURNED TO SEA. LANDING UNEVENTFUL. REMOVED AND REPLACED APU BATTERY AND APU BATTERY CHARGER IAW CRJ-700 AMM TASKS 24-32-03-000-801; 24-32-03-400-801; 24-32-07-000-801 AND 24-32-07-400-801. OPS CHECK GOOD. APU BATT Apr 28, 2009 · N613QX · Cndair CL6002C10SDR UALA2009041301049Motor · failedAPU FAILED TO START AT GATE. WO MESSAGES FAULT CODE 491-004-00 MAINT MESSAGE 49-18801, AND FAULT CODE 491-004-00 MAINT MESSAGE 49-10620 FAULT HISTORY. REPLACED ELECTRIC STARTER MOTOR AND APUC. VERIFIED 28 VOLTS TO STARTER, REPLACED COMPONENTS, OPS CHECK GOOApr 10, 2009 · N215UA · Boeing 777222SDR UALA2009033100935Charger · dischargedAPU WILL NOT START. FOUND BATTERY CHARGER C/B POPPED. REPLACED APU BATTERY CHARGER. ALSO REPLACED APU BATTERY. APU STARTS AND OPS CHECKS NORMAL.Mar 31, 2009 · N218UA · Boeing 777222SDR AALA2009030800001Ignition Unit · inoperativeIND - LEFT ENGINE DRIVE LIGHT ILLUMINATED AND APU AUTO SHUTDOWN. LANDED IND WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. SERVICED LEFT ENGINE GENERATOR. REPLACED IGNITION UNIT.Mar 8, 2009 · N195AN · Boeing 757223SDR UALA2009031000754Starter · faultyAPU FAILED TO START AND GENERATED FAULT CODE 49-10620. ORDERED DC-STARTER MOTOR PCN 651-0308 & APU CRANK CONTROL RELAY. REPLACED APU CRANK RELAY K2449 4 AND AUTO START CONT RELAY K24030, NO HELP. REPLACED APU CONTROLLER COMPUTER, NO HELP. RE-INSTALLED ORIGMar 8, 2009 · N204UA · Boeing 777222SDR UALA2009031000702Starter · wornAPU CONTROL APUC DETECTED FAILURE OF REDUNDANT CONTROL FUNCTION OR LOSS OF ONE ARINC 629 CHANNEL. STATUS MSG01- NOT ACTIVE ENGINE START HARD; ELECTRIC STARTER MOTOR HAS BRUSH WEAR. DB- APU CONTROLLER (APUC) MSG-4910760 INACTV ES HARD. REPLACED STARTER MOTOMar 2, 2009 · N768UA · Boeing 777222SDR UALA2009030300702Starter · faultyAPU CONTROL APUC DETECTED FAILURE OF REDUNDANT CONTROL FUNCTION OR LOSS OF ONE ARINC 629 CHANNEL. STATUS MSG01- NOT ACTIVE ENGINE START HARD; ELECTRIC STARTER MOTOR HAS BRUSH WEAR. DB- APU CONTROLLER (APUC) MSG-4910760 INACTV ES HARD. REPLACED STARTER MOTORMar 2, 2009 · N768UA · Boeing 777222SDR ASAA0954583Starter Gen · failedON APU START BLUE MAINT LIGHT ILLUMINATED. REMOVED & REPLACED STARTER GENERATOR REF TASK 49 41 21 000 801 & 49 41 21 400 801.Feb 27, 2009 · N585AS · Boeing 737890SDR UALA2009031000649Plug · wornAPU IGNITER SYSTEM A IGNITER PLUG WORN. REPLACED IGNITER PLUG.Feb 24, 2009 · N211UA · Boeing 777222SDR UALA2009022500649Plug · wornAPU IGNITOR SYSTEM A IGNITOR PLUG WORN. REPLACED IGNITOR PLUG.Feb 24, 2009 · N211UA · Boeing 777222SDR UALA2009031000509Starter · malfunctionedAPU FAULT. REPLACED STARTER, CLUTCH ASSY AND BATTERY (P/N 18550-000).Feb 15, 2009 · N667UA · Boeing 767322SDR UALA2009021700509Starter · faultyAPU FAULT. REPLACED BATTERY (P/N 18550-000), STARTER & CLUTCH ASSY.Feb 15, 2009 · N667UA · Boeing 767322SDR QXEA2009021800120Igniter · failedGEG - APU FAILED TO START AFTER 2 START ATTEMPTS. ON SECOND START ATTEMPT, GROUND PERSONNEL NOTICED A LOT OF SMOKE COMING OUT OF APU EXHAUST. PLACED ON MEL 49-00-1. RETURNED TO SERVICE. 2/16 REMOVED BOTH IGNITER PLUGS AND INSTALLED NEW FROM STOCK IGNITERS Feb 10, 2009 · N432QX · Bombdr DHC8402SDR UALA2009031000430Igniter Box · faultyAPU START SYS APUC DETECTED FAILURE IN THE ELECTRIC STARTER, FUEL SCHEDULING, IGNITION, OR LUBE DEPRIME SYSTEMS OR NO SIGNAL FROM ELMS TO THE APUC. REPLACED EXCITER CLUSTER APU IGNITION BOX (P/N 3876195-8), BOTH LEADS (P/N 3888283-2 & 3888283-4), AND BOTH PLUFeb 8, 2009 · N778UA · Boeing 777222SDR UALA2009020900430Ignition Sys · malfunctionedAPU START SYS APUC DETECTED FAILURE IN THE ELECTRIC STARTER, FUEL SCHEDULING, IGNITION, OR LUBE DEPRIME SYSTEMS OR NO SIGNAL FROM ELMS TO THE APUC. REPLACED EXCITER CLUSTER (APU IGNITION BOX (P/N 3876195-8), BOTH LEADS (P/N 3888283-2 & 3888283-4), AND BOTH PFeb 8, 2009 · N778UA · Boeing 777222SDR HALA2009020500042Starter · failedETOPS SIGNIFICANT SYSTEMS, APU FAILED TO START ON ARRIVAL, APU FAULT. CONFIRMED APU CLUTCH DISENGAGES, PERFORMED TROUBLESHOOTING IAW FIM 49-11-00 FIG 103/104 BITE APU STARTER. CHECK APU STARTER, FOUND BURNED HOLE ON BYPASS WEAR INDICATOR AREA. CHECK APU CFeb 6, 2009 · N589HA · Boeing 76733AERSDR ASAA0954352Ignition Unit · faultyAFTER REPLACING F.C.U & LUBE MODULE DIFF. PRESS INDICATOR . FAULT CODE (MX MSG) 4931175 DISPLAYED "FCU RESOLVER CIRCUIT SHOWS BAD". GROUNDED YES. R&R APU IGNITION UNIT PER M/M 49 41 31 OPS CHECKS GOOD.Feb 4, 2009 · N579AS · Boeing 737890SDR UALA2009020200346Starter · failedAPU WOULD NOT START. THREE ATTEMPTS. EXISTING FAULT MESSAGE 49-17004 AND 49-17002 CURRENTLY LATCHED. CHANGED APU BATTERY, CHANGED APU CHARGER CHANGED K49002 RELAY P310, NO HELP. PER TAXI CREW APU STARTED NORMAL WITH AIR STARTER. REPLACED APUC CONT, NO HELJan 30, 2009 · N775UA · Boeing 777222SDR ASAA0954206Starter Gen · faultyAPU MX LIGHT ON MX MSG 49 41244. GROUNDED YES. STARTER/GENERATOR HAS BAD DIODE. ETOPS PARTS VERIFICATION: STARTER PN/28B545 7 START CONVERTER PN/452466 250. SEAMC MIKE NOTIFIED. 08675. INSTALLED NEW APU STARTER GENERATOR PN/28B545 7 PER MM 49-41-21 400 80Jan 11, 2009 · N566AS · Boeing 737890SDR ASAA0954131Starter Gen · malfunctionedAPU FAULT LITE ILLUMINATED. GROUNDED YES. REMOVED AND INSTALLED A NEW APU STARTER GENERATOR IAW AMM 49-41-21 00 801 APU MAINT MSG 49 41012 NO APU ROTATION. DURING STARTER GENERATOR INSTALLATION TEST APU STARTED BUT AUTOSHUT DOWN AFTER 1 MIN FAULT LIGHT ILLUMINJan 2, 2009 · N570AS · Boeing 737890SDR HALA2008123100915Igniter · faultyETOPS SIGNIFICANT SYSTEM, APU FAILED TO START FAULT LIGHT ILLUMINATED EICAS MSG. APU FAULT DISPLAYED 2ND ATTEMPT NO RPM RISE. FOUND NO LIGHT OFF FAULT. REPLACED APU IGNITER PLUG AND LEAD PER AMM 49-41-02 AND 49-41-04. GRD OPS CHECK OK.Dec 31, 2008 · N580HA · Boeing 76733A
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