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 UIEA2018120302762Exciter · malfunctionedAPU DIDN'T START. REMOVED AND REPLACED APU IGNITION EXCITER IAW AMM 49-41-03. OPS CHECK GOOD.SDR UIEA2018112982730Relay · inoperativeREF: APU DOES NOT START (ECU FAULTS APU STARTER). (<P>REMOVED AND REPLACED APU CRANK CONTACTOR RELAY PER AMM 49-41-05 S/N OFF P984 P/N ON CC07081-MVA34B, REMOVED AND REPLACED STARTER IAW 49-41-01 OP'S CHECK NORMAL. </P>)SDR HALA2018112600608Motor · inoperativeETOPS SIGNIFICANT SYSTEM - UNABLE TO START APU. // T/S PER A330 TSM 49-00-00-810-827-A AND REMOVED AND REPLACED FUSE 6KA1 REATTEMPTED START UP OF APU AFTER PRIMING APU FUEL
LINE, NO HELP. FUSE 6KA1 BLOW AGAIN. NEEDS FUSE. REMOVED AND REPLACED STARTER FUSSDR ASAA2018112127073Ignition Unit · failedON TAXI IN, STARTED APU, RECEIVED "FAULT " LIGHT. GROUNDED - YES. REF FIM 49-40 TASK 802, REMOVED AND REPLACED APU IGNITION UNIT PER AMM 49-41-31. ACCOMPLISHED MULTIPLE APU STARTS, NO DEFECTS NOTED. CURRENT STATUS SHOWS NO FAULTS.SDR UIEA2018112102669Apu · unknownAPU FAILED TO START. 2 ATTEMPTS IN THE AIR AND 1 ATTEMPT ON THE GROUND AFTER LANDING.(<P><SPAN>BIT / THE APU BOX IAW FIM 49-11-00-815-987. OPS CHECK GOOD. RAN APU MULTIPLE TIMES / COULD NOT DUPICATE FAULT</SPAN></P>)SDR UIEA2018111402616Exciter · malfunctionedAPU WOULD NOT START ON LANDING , OIL QTY ADD(<P>TRANSFERRED TO MDDR # 102843 AS PER DDG 49-11-01B CAT B <BR /></P><P>LOG PAGE 1009344 REMOVED AND REPLACED APU IGNITION EXCITER I.A.W 49-41-03 APU IGNITION & START OPS CHECK NORMAL I.A.W AMM 49-41-00, MDDR # 1028SDR ASAA2018110926822Warning System · false activationON START APU START FAULT MESSAGE 49-41249. GROUNDED - YES. PERFORMED FIM 49-60 TASK 801 AND TASK 822 NO CURRENT STATUS. GROUND VERIFICATION COMPLETE. AIRCRAFT GOOD FOR SERVICE.SDR UIEA2018111432595Igniter · faultedAPU ECU FAULT.(<P>R/R IGNITER PLUG IAW AMM 49-41-02.</P>)SDR DALA2018110806541Starter · odorAPU FAULT MESSAGE WITH ATTEMPTED APU START ACCOMPANIED BY REPORTED UNUSUAL ODOR BY FLIGHT ATTENDANTS IN THE BACK OF AIRCRAFT. APU INSPECTED AND BURN SMELL COMING FROM APU STARTER. R/R APU STARTER MOTOR PER MD90 AMM 49-44. INSPECTED APU STARTER CABLES/WIRE AS RSDR ASAA2018110526728Power Unit · failedAPU FAILED TO START ON DC POWER, WITH FAULT LIGHT. STARTS NORMALLY WITH EXTERNAL POWER CONNECTED. GROUNDED - YES. APU BITE PER FIM 49-60 TASK 801 SHOWED FAULT 49-41249 START CONVERTER UNIT SHOWS LOW BATTERY POWER LOGGING FOR EACH START ATTEMPT. ALSO FAULT 49-4SDR AALA201810299041O-Ring · leakingAFTER TAKEOFF, THE FLIGHT ATTENDANTS REPORTED A BAD MUSTY - MILDEW ODOR THROUGHOUT THE AIRCRAFT. DISSIPATED AS AIRCRAFT MADE IT TO ALTITUDE. THEN AGAIN DURING DESCENT. THE AIRCRAFT WAS GROUNDED. REPLACED THE STARTER AND CLUTCH SEALS AND O-RINGS IAW AMM 49SDR UIEA2018101802284Exciter · malfunctionedAPU FAULT. APU INOP. PERFORMED OPS CHECK OF APU IAW AMMM 49-11-00. NO LIGHT OFF (NO EGT RISE) BITE CHECK OF ECU IAW FIM 49-11-FT958, ECU BITE SAID IGN UNIT. R&R APU EXCITER BOX IAW AMM 49-41-03. REMOVED AND REPLACED APU IGNITION LEAD IAW AMM 49-41-04, P/N 3888SDR ASAA2018101526469Ignition Unit · failedAPU FAULT LIGHT CAME ON AND WOULD NOT RESET. GROUNDED - YES. REMOVED AND REPLACED APU IGNITION UNIT AND LEAD. OPS CHECK GOOD. REFERENCE APPLICABLE STEPS IN AMM 49-41-31 AND 49-41-52.SDR UIEA2018092702092Exciter · not reportedAPU FAILED TO START. TRANSFER TO MDDR 100321 IAW DDG 4-11-01A CAT C DUE DATE 08-OCT18, PLACARD INSTALLED.SDR ASAA2018092526322Power Unit · failedDURING TAXI TO GATE, STARTED APU. THE APU STARTED BUT NO APU GEN OFF BUS LIGHT ILLUMINATED AND APU GEN VOLTMETER SHOWED ZERO VOLTS. APU GEN INOP. GROUNDED - YES. PERFORMED NORMAL OPERATION OF APU MULTIPLE TIMES PER B737-900 AMM 49-11-00. VOLTAGE AND FREQS WERESDR ASAA2018092426226Ignition Unit · failedAPU AUTO SHUTDOWN DURING START AT SFO GROUNDED - YES. REMOVED AND REPLACED IGNITION UNIT(8030KM) IAW AMM 49-41-38. OPS CK GOOD.SDR P5CA2018092400289Starter · faultyAPU FAULT AFTER LANDING APU WOULD NOT START. APU CONTROLLER BITE SHOWS START CKT FAULTY. R&R APU STARTER PER AMM 49-41-01 BUT SAME COND AND FOUND APU START T/R UNIT N, E, AND APU BATT START NORMAL.SDR COZA20180920123Converter · intermittentAPU INTERMITTENTLY DOES NOT START ON BATTERY POWER. PERFORMED AN APU BITE CHECK FOR CURRENT FAULTS. FOUND MAINTENANCE MESSAGE 49-41248. TROUBLESHOT THE SYSTEM DOWN TO THE START CONVERTER UNIT USING THE FAULT ISOLATION MANUAL. REPLACED THE START CONVERTER AND OSDR DALA2018091705615Starter · fireDURING APU START ATTEMPT APU STARTER CAUGHT ON FIRE. PULLED CBS B-22 AND U39. FOUND HOLE BURNED IN STARTER. REMOVED AND REPLACED APU STARTER PER AMM 49-44. R&R RELAY R2-63 AND R5-792 PER WDM 49-41-00. APU OK FOR SVC. ALL CBS PUSHED IN.SDR UIEA2018091501978Exciter · failedAPU RELIABILITY COLD START ACCOMPLISHED ON FLT LEG TPA- SCK SAT -54C FL 410 UNSUCCESSFUL AFTER 3 START ATTEMPTS. REMOVED AND REPLACED IGNITION EXCITER IAW AMM 49-41-03. PERFORMED OPS CHECK, OPS CHECK SATISFACTORY.SDR ASAA2018090826070Starter Gen · faultyAPU FAILED TO START, FAULT LIGHT ILLUMINATED. NO ROTATION SHUTDOWN MAINT MESSAGE 49-41012. GROUNDED - YES. REMOVED AND REPLACED APU STARTER-GENERATOR UNIT PER AMM 49-41-21. REPLACEMENT AND GROUND VERIFICATION INSTALLATION ACCOMPLISHED, OPS CK GOOD. APU CURRENTSDR ASAA2018090425996Fault Message · false indicationAPU BITE CURRENT STATUS SHOWS FAULT MSG 49-61259 SPEED SENSOR 1 SHOWS OPEN CIRCUIT. GROUNDED - YES. ACCOMPLISHED FIM 49-60 TASK 817 UP TO PG 7 PA 7, FAULT CLEARED FROM CURRENT STATUS ON APU BITE.SDR UIEA2018082101761Exciter · malfunctionedAPU FAULT. R&R APU EXCITER IAW AMM 49-41-03. OPS CHECK IS NORMAL AT THIS TIME.SDR UIEA2018081501701Ecu · faultyAPU FAULT LIGHT ILLUMINATED WHEN ATTEMPTING TO START AFTER LANDING. PERFORMED BITE CHECK AND RESET OF ECU PER FIM 49-11 FAULT TREE 959. OK FOR SERVICE.SDR UIEA2018080801639Exciter · faultyAPU FAULT DURING START UP. REMOVED AND REPLACED APU IGNITION EXCITER IAW AMM 49-41-03. OPS GOOD.SDR UIEA2018080301616Igniter · defectiveAPU FAULT WHEN ATTEMPTING TO START AT FL 390. REPLACED IGNITOR PLUG. CKS GOOD.SDR HALA2018072300333Motor · faultyETOPS SIGNIFICANT SYSTEM - APU FAULT MESSAGE UPON START ATTEMPT ON GROUND. HUNG START AT 30% RPM AND 770 DEGREE C EGT. REMOVED AND REPLACED APU STARTER MOTOR PER AMM 49-41-01. OPS AND LEAK CHECK OK. REMOVED AND REPLACED APU GENERATOR SCAVENGE FILTER AND APU LUSDR AALA2018072549047Relay · defectiveDURING CLIMB, THE LT CSD RED, DISCONNECTED CSD IAW QRH, VOLT FREQUENCY 0 PRIOR TO DISCONNECT. AN ATTEMPT WAS MADE TO START THE APU, BUT APU DID NOT START IN FLIGHT, SEVERAL ATTEMPTS WERE MADE. RETURNED TO DEPARTURE, THE AIRCRAFT WAS GROUNDED. APU STARTEDSDR HALA2018071900325Ecu · malfunctionedETOPS SIGNIFICANT SYSTEM - APU WILL NOT START ON LANDING. 2 ATTEMPTS. REMOVED AND REPLACED APU ECU PER AMM 49-61-05. OPS CHECK GOOD. NO FAULTS DETECTED. OK FOR SVCSDR UIEA2018071601477Starter · wornAPU STARTER MOTOR BRUSH WEAR INDICATOR IS WORN. REMOVED AND REPLACED STARTER IAW AMM 49-41-11.SDR UIEA2018071201444Unknown · malfunctionedAFTER LANDING APU WOULD NOT START, 3 ATTEMPTS FAILED. PERFORMED APU BITE CHECK IAW AMM 49-61-05/201, APU STARTING 49-11-00-802-002, OPS CHECKED GOOD.SDR ASAA2018070325278Exciter · malfunctionedAPU FAILED TO START AFTER LANDING. TWO ATTEMPTS FAULT LIGHT ILLUM. GROUNDED - YES. REMOVED AND REPLACED APU IGNITION EXCITER PER AMM 49-41-31 OPS CHECK NORMAL.SDR UIEA2018070501344Starter · defectiveAPU MOTOR WIRES LOOSE AT APU COMPARTMENT. REMOVED AND REPLACED APU STARTER PER AMM 49-41-01.SDR UIEA2018062701275Starter · inoperativeAPU COLD SOAK START UNSUCCESSFUL AFTER 3 ATTEMPTS SAT -50, FL 370. REMOVED AND REPLACED APU STARTER AS PER AMM 49-41-01. OPS AND LEAK CHECK OK.SDR ASAA2018062325179Starter Gen · failedAPU BLUE MAINTENANCE LIGHT IS ON. GROUNDED - YES. REMOVED AND REPLACED APU STARTER-GENERATOR REF AMM 49-41-21 / 401. OPS CHECKS GOOD.SDR UIEA2018062601254Ecu · malfunctionedAPU FAULT, EICAS AND APU FAULT LIGHT DURING ATTEMPTED START, APU WOULD NOT START. PERFORMED BIT TEST AND RE-SET ECU BOX - NO FAULT FOUND. PERFORMED THREE SUCCESSFUL STARTS IAW AMM 49-11-00, OPS CHECK GOOD AT THIS TIME.SDR UIEA2018061801179Starter · faultyAPU INOP. REMOVED AND REPLACED STARTER APU PER AMM 49-41-01 OPS CHECK GOOD.SDR ASAA2018062175124Exciter · faultedAPU WILL NOT START, ON ATTEMPTS, NO ROTATION FAULT LIGHT ILLUMINATED. ACFT GROUNDED. INTERROGATED CDU, FOUND FAULT 49-41011, NO FLAME SHUTDOWN. CURRENT STATUS NO FAULTS AND NO MAINT HISTORY. CHANGED THE IGNITOR PLUG AND LEAD IAW AMM 49-41-54/49-41-52. CHSDR ASAA2018061025004Igniter · faultedDURING INTERROGATION OF THE CDU. FOUND FAULT MESSAGE 49-41011, NO FLAME SHUTDOWN. ACFT GROUNDED. R & R THE IGNITION UNIT & IGNITOR PLUG IAW AMM 49-41-31, & 49-41-51. APU SHOWED A FAULT LIGHT DURING START. APU BITE CHECKED IAW FIM 49-61, TASK 801. SHOWEDSDR UIEA2018060801086Warning System · false activationAFTER LANDING 2 ATTEMPTS TO START APU. GOT APU FAULT. RESTARTED APU AND OPS CK GOOD REF AMM 49-41-00.SDR SIMA2018061108009Starter Gen · failedON GROUND POWER, APU PNEUMATICS, PACK 2 ON, GROUND RAMPERS REPORTED SMOKE OUT OF APU STARTER OUTFLOW EXHAUST. SMELL OF SMOKE IN THE FLIGHT DECK-C/A-FLIGHT CREW PLACARDED APU GEN FUNCTION MEL 2408 AUTH 060363-D MOC 056048. DEFERRAL PER MEL 49-1 AUTH # 060368DMSDR UIEA2018060801079Starter · wornAPU STARTER MOTOR BRUSH WEAR INDICATOR IS OUT OF LIMITS. REMOVED AND REPLACED APU STARTER IAW AMM 49-41-01 OPS CHK NML.SDR ASAA2018060324941Switch · stuckDUE TO A REPORT OF THE APU START SWITCH BEEN STUCK IN THE OFF POSITION AND PREVENTING THE APU START, ACFT GROUNDED. REMOVED AND REPLACED THE APU MASTER SWITCH. OPS CHECKED GOOD. IAW AMM 49-41-01 AND WDM 49-62-11-7.SDR UIEA201806071046Control Box · malfunctionedAPU FAULTED ON START. RESET THE APU CONTROL BOX,. APU STARTED NORMAL IAW 49-41-10.SDR UIEA2018060101007Control Valve · malfunctionedAPU AUTO SHUTDOWN WITH A REVERSE FLOW MESSAGE. REMOVED AND REPLACED THE APU SURGE CONTROL VALVE IAW AMM 49-53-01, OPS CHECKED NORMAL.SDR UIEA2018052900995Igniter · inoperativeAPU WOULD NOT IGNITE. R&R IGNITER ON APU REF AMM 49-41-02 OPS CK NORMAL.SDR UIEA2018052500954Exciter · failedAPU FAULT EICAS MESSAGE AFTER LANDING. BITE CHECKED THE ECU, FOUND OK, NO MINI-FLAGS, LAST RUN-NO LIGHT OFF. AUTO EVENT EGT 25-RPM-19 IAW MM 49-61-05. REMOVED AND REPLACED EXITER PLUG IAW MM 49-41-02, SYSTEM CHECKED NORMAL.SDR UIEA2018052400947Exciter · dirtyAPU FAULT ON STARTUP AFTER LANDING, APU DID NOT START AFTER 3 ATTEMPTS. REMOVED, INSPECTED AND CLEANED CARBON DEPOSIT FROM APU EXCITER PLUG REINSTALLED OPS CHECKS IAW B767 AMM 49-41-02-107-016 OPS CHECKS NORMAL.</P>)SDR UIEA2018052200929Exciter · failedAPU FAULT, APU WILL NOT START. REMOVED AND REPLACED THE APU EXCITER IAW AMM 49-41-03, SYSTEM CHECKED NORMAL.SDR UIEA2018051600905Ignition Sys · faultedAPU FAULT ON GROUND. R & R THE APU IGNITION UNIT IAW AMM 49-41-03. OPS CHECKED GOOD.
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