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 UIEA2020031600467Ignition Unit · faultyAPU DID NOT START, 5 ATTEMPTS, FL 400, FL 350, FL 300, FL 250 & FL 170. OIL LEAK OBSERVED AFTER FLIGHT.(<P>IGNITION UNIT WAS REPLACED AND TEST WAS PERFORMED IAW AMM 49-41-03-404-010. OPS CHK GOOD.<BR /></P>)Mar 8, 2020 · N662GT · Boeing 76731ASDR A6WA2020022847208Igniter · failedSTRONG FUEL SMELL IN COCKPIT& CABIN AFTER STARTING APU. R&R EXCITER PER AMM 49-41-01-000-801, OPS CHECK GOOD. R&R BOTH APU IGNITORS PER AMM 49-41-05-000-801, OPS CHECK GOOD. SN OFF:1366J SN ON:J11060014 Feb 27, 2020 · N471ZW · Cndair CL6002B19SDR UIEA2020022600327Starter · failedAPU FAULT ATTEMPTED 2 TIMES.(<P>DEFERRED PER DDG 49-11-01A, MDDR 125062.</P><P>LP 1171707: REMOVED AND REPLACED APU STARTER IAW AMM 49-41-01. OPS CHECK GOOD. NO FAULTS NOTED. THIS CLEARS DMI 125602. PLACARD REMOVED.<BR /></P>)Feb 26, 2020 · N1381A · Boeing 767316SDR ASAA2020030232288Unknown · malfunctionedAPU FAILED START AT FL 370, 370, 380 WITH FAULT LIGHT. FAULT EXTINGUISHED IMMEDIATELY AFTER FIRST ATTEMPT AND SWITCHED OFF. FAULT LIGHT EXTINGUISHED AFTER 5 MINUTES AFTER 2ND AND 3RD ATTEMPTS. EGT REACHED 950 EACH ATTEMPT. GROUNDED - YES. ON DEFERRAL.Feb 25, 2020 · N402AS · Boeing 737990ERSDR UIEA2020022630311Ecu · malfunctionedON INITIAL ENGINE START (R-CVG) (L-DEN), APU BLEED AIR PRESSURE IS FLUCTUATING BETWEEN 15 AND 25 PSI, RESULTING IN MAX MOTORING OF 19.5 N2 ONLY.(<P>TRANSFERRED TO DMI 124990, CAT C, DUE 04MAR20 IAW MEL 49-11-01-01.</P><P>LP 1196990: PERFORMED APU BITE IAW FIM Feb 23, 2020 · N1709A · Boeing 767375SDR UIEA202002210296Battery · dischargedAPU FAILED TO START.(<P>FOUND APU BATTERY LOW VOLT AT START 9VDC. REMOVE AND REPLACE APU BATTERY IAW AMM 24-31-04. OPS CHECK NORMAL AT THIS TIME.</P>)Feb 20, 2020 · N1361A · Boeing 76731BSDR HALA2020022100041Apu · shutdownETOPS SIGNIFICANT SYSTEM - X2 APU SHUTDOWN DURING START. // RESTART APU BY EXTERNAL POWER PER AMM 49-00-00-860-008-A. OPS CHECK OKAY OK FOR SERVICE. NO ISSUE NOTEDFeb 20, 2020 · N209HA · Airbus A321271NSDR ASAA2020022072220Starter Gen · inoperativeAFTER START APU WOULD NOT COME ON BUSSES. BLUE "APU GEN OFF BUS " IS ILLUMINATED BUT 0 VOLTS AND FREQ. GROUNDED - YES. WORKED IN CONJUNCTION W/ LOGPAGE 12163865 REMOVED AND REPLACED STARTER GENERATOR REF B737-900 AMM 49-41-21-400-801.Feb 17, 2020 · N431AS · Boeing 737990ERSDR UIEA2020021700266Surge Valve · malfunctionedAPU AUTO SHUT DOWN WHEN PACK TURNED ON.(<P>REMOVED AND REPLACED APU SURGE CONTROL VALVE IAW AMM 49-53-01. OPS CHECK GOOD AT THIS TIME. </P>)Feb 15, 2020 · N1427A · Boeing 767306SDR ASAA2020021042091Exciter · faultedAPU FAULT LIGHT ON START. MULTIPLE ATTEMPTS. GROUNDED - YES. REMOVED AND REPLACED APU IGNITION UNIT REF B737-900 AMM 49-41-31/401. OPS CHECK GOOD.Feb 4, 2020 · N462AS · Boeing 737990ERSDR ASAA2020020543086Fault Light · false activationAPU FAULT LIGHT ILLUMINATED DURING START. GROUNDED - YES. PERFORMED APU BITE ON CDU, FOUND FAULT 49-41011 "NO FLAME SHUTDOWN". STARTED & OPERATED APU TWICE REF B737-900 AMM 49-11-00/201 WITH NO DEFECTS NOTED. APU OPERATES NORMALLY.Feb 4, 2020 · N462AS · Boeing 737990ERSDR ASAA2020020542085Fault Light · false activationON APU START WE RECEIVED A FAULT LIGHT WITH UNSUCCESSFUL START AFTER APPROXIMATELY 1 MINUTE, FAULT LIGHT WENT OUT. GROUNDED - YES. APU BITE SHOWS 49-41012 MESSAGE, NO APU ROTATION. APU STARTED & OPS NORMAL ON SECOND ATTEMP.Feb 4, 2020 · N462AS · Boeing 737990ERSDR P5CA202001310023Control Valve · malfunctionedAPU SHUT DOWN DURING ENG START, UNABLE TO RESTART.(<P>TRANSFERRED TO MDDR 124080, APPLIED DDG 49-11-01B, CAT 'B'.</P><P><SPAN>LP 952758: REMOVED AND REPLACED APU SURGE CONTROL VALVE IAW AMM 49-53-01. PERFORMED APU STARTING AND OPS CHECK OK, NO LEAKS. THIS CLEAJan 29, 2020 · N644GT · Boeing 7673JHFSDR ASAA2020020483075Eec · faultedAPU SHOWS 0 DUCT PRESSURE. GROUNDED - YES. REMOVED AND REPLACED APU ECU, VERIFIED DUCT PRESSURE IS AVAILABLE, OPS CHECK SUCCESSFUL, NO FURTHER DEFECTS NOTED, REF B737-800 AMM 49-61-12.Jan 28, 2020 · N506AS · Boeing 737890SDR DALA2020012940680Starter · not reportedAT GATE W/APU AND PACKS ON STRONG ODOR INSIDE CABIN, TAIL CONE AND OUTSIDE NEAR APU COMPARTMENT. SMELL BEST DESCRIBED AS ACRID CHEMICAL BURNING. R/R APU STARTER PER MD90 AMM 49-44. WILL REQ LEAK CHECK. ALSO REQ RELAY R2-63, R2-792 (AMT 794502). R/R LT AND RT SJan 23, 2020 · N916DN · Doug MD9030SDR ASAA2020012733972Fault Code · false activationAPU FAULT. GROUNDED - YES. APU FAULT CODE MESSAGE 49-41012. NO APU ROTATION SHUTDOWN. PER B737-800 FIM 49-40 TASK 803, APU FAULT CLEARED, NO OTHER FAULTS NOTED, APU STARTS NORMAL. INTERMITTENT FAULT.Jan 23, 2020 · N530AS · Boeing 737890SDR UIEA2020011700087Unknown · malfunctionedAPU FAILED ON GROUND TUG AND TAXI 3 TIMES IN 45 MINUTES. 3 STARTS SUCCESSFUL IN 1 HOUR. PERFORMED APU ECU BITE IAW FIM 49-11 FT 958. NO FAULTS NOTED. CLEARED MEMORY ON ECU. OPS CHECK NORMAL AT THIS TIME.Jan 17, 2020 · N1361A · Boeing 76731BSDR ASAA2020012161919Converter · faultedAPU FAULT LIGHT ILLUMINATED DURING APU START. RAN QRH FAULT LIGHT EXTINGUISHED. APU STARTED NORMALLY ON 2ND START. GROUNDED - YES. BITE CHECK SHOWS NO FAULTS IN CURRENT STATUS PAGE, FOUND FAULT CODE 49-41012 'NO APU ROTATION SHUTDOWN' FAULT IN FAULT HISTORY PJan 16, 2020 · N462AS · Boeing 737990ERSDR ASAA2020011631870Unknown · malfunctionedAFTER LANDING, ATTEMPTED TO START APU, FAILT LIGHT ILLUMINATED AND APU WOULD NOT START. QRH FOLLOWED, AFTER 5 MIN, RESTART ATTEMPTED WITH NORMAL INDICATIONS. GROUNDED - YES. PERFORMED APU BITE PROCEDURE PER FIM 49-60 TASK 801, NO CURRENT FAULTS NOTED. FAULT HIJan 15, 2020 · N462AS · Boeing 737990ERSDR UIEA2020011300049Unknown · malfunctionedAPU FAILED TO START ON 2 ATTEMPTS AFTER LANDING.(<P>PERFORMED ECU BITE CHECK I.A.W AMM 49-61-05. NO LIGHT OFF FAULT, PERFORMED APU OPERATIONAL TEST I.A.W AMM 49-11-00. NO DEFECTS NOTED.</P>)Jan 11, 2020 · N1181A · Boeing 7673Y0SDR ASAA2020011331816Starter Gen · failedAPU FAULT LIGHT WHILE STARTING APU AFTER LANDING. GROUNDED - YES. REMOVED AND REPLACED STARTER/GENENERATOR IAW AMM 49-41-21. OPS CKS GOOD.Jan 8, 2020 · N462AS · Boeing 737990ERSDR P5CA2020010980006Tru · failedAPU FAULTED AFTER THREE ATTEMPTS. IAW FIM 49-11 FT 987, 988, PERFORMED APU BITE TEST. FOUND BATTERY START APU OK, BUT APU TRU INOPERATIVE. APU START TRU REPLACED AND TESTED SERVICEABLE IAW AMM 24-32-04.Jan 7, 2020 · N643GT · Boeing 7673JHFSDR AALA202001069020Terminal · arcedAIRCRAFT WAS GROUNDED FOR MEL 49-01B : FOUND BURNED TERMINALS ON POSITIVE SIDE STARTER MOTOR. REPAIRED POSITIVE SIDE TERMINALS IAW ESPM 20-48-11.Jan 4, 2020 · N9004F · Airbus A319115SDR P5CA2019122630231Apu · faultedAPU FAULT WHEN WE ATTEMPTED TO START IT DURING TAXI.ACCOMPLISHED 2 SUCCESSFUL APU STARTS PER AMM 49-41-00. ACCOMPLISHED APU ECU BITE PER AMM 49-61-05. NO STORED FAULTS. OK FOR SERVICE.Dec 23, 2019 · N642GT · Boeing 7673Y0SDR UIEA2019121876095Ignition Lead · failedAPU INOP. REMOVED AND REPLACED EXCITER IGNITION IAW AMM 49-41-03. OPS CHECKED GOOD. REMOVED AND REPLACED THE IGNITION LEAD ON APU IAW AMM 49-41-04. OPS CHECKED GOOD.Dec 16, 2019 · N1361A · Boeing 76731BSDR UIEA2019121766088Rectifier · failedAPU FAILED TO START AFTER 2 ATTEMPTS. PERFORMED FIM TASK 49-61-00 AND FOUND APU ECU AT FAULT. REMOVED AND REPLACED ECU IAW AMM 49-61-00. OPS CHECKED NORMAL. PERFORMED FIM TASK 49-61-00. FOUND APU STARTER T/R AT FAULT, REMOVED AND REPLACED IAW AMM 49-61-02. Dec 16, 2019 · N1619A · Boeing 7673Y0SDR P5CA2019121640228Ecu · malfunctionedAPU AUTO SHUTDOWN(<P>TRANSFERRED TO MDDR 122058 IAW MEL 49-11-01A, CAT 'C', DUE 24DEC19. PLACARD INSTALLED. MCC NOTIFIED.</P><P>LP 1097764 - M2: REMOVED AND REPLACED APU ECU IAW AMM 49-61-05. THIS CLOSES DMI 122058. MCC NOTIFIED AND PLACARD REMOVED.</P>)Dec 14, 2019 · N647GT · Boeing 767306SDR UIEA2019121206054Apu · faultedAPU FAULT 2 ATTEMPTS (<P>PERFORMED BITE TEST ON ECU, NO FAULTS FOUND. APU STARTED ON 3RD ATTEMPT, OPS CHECK GOOD, REF AMM 49-11-00.</P>)Dec 11, 2019 · N1499A · Boeing 767328SDR ASAA2019121191567Exciter · inoperativePER FLIGHT CREW REPORT APU WOULD NOT START FAULT LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED APU BITE PROCEDURE REF B737-900 FIM 49-60 TASK 801 FOUND MX MESSAGE 49-41184 IN CURRENT STATUS. COMPLIED W/ FIM 49-40 TASK 804 THRU STEP F(4) NO ISSUES FOUND W/ WIRINDec 9, 2019 · N442AS · Boeing 737990ERSDR UIEA2019120205970Divider · malfunctionedAPU AUTO SHUTDOWN AT DEPARTURE TIME.(<P>TRANSFERRED TO DMI 121390 PER MEL 49-11-01, CAT 'C', DUE 12-DEC-19. PLACARDS INSTALLED AND MCC NOTIFIED.</P><P>LP 1107196 - M5: ACCOMPLISHED HEALTH CHECK, REMOVED AND REPLACED APU FUEL FLOW DIVIDER IAW AMM 49-31-03. OPS Dec 2, 2019 · N1373A · Boeing 76731KSDR ASAA2019112643448Apu · malfunctionedAPU WILL NOT START FAULT LIGHT X 2. GROUNDED - YES. C/W B737-900 FIM 49-40 TASK 802 NO FLAME SHUTDOWN. NO FLAME SHUTDOWN FAULT NOTED.Nov 24, 2019 · N408AS · Boeing 737990ERSDR UIEA2019112535951Sensor · faultedAPU AUTO SHUTDOWN. SERVICED APU OIL (1.5 QT) IAW AMM 12-13-04. OPS CHECK AND LEAK CHECK NORMAL, NO FAULTS NOTED. APU AUTO SHUTDOWN AGAIN. REMOVED AND REPLACED INLET TEMP SENSOR ON APU PER AMM 49-61-03. RAN APU, PERFORMED OPERATIONAL CHECK, OPS CHECK GOONov 23, 2019 · N1427A · Boeing 767306SDR UIEA2019112215942Apu · malfunctioned2 FAILED START ATTEMPTS ON THE GROUND; APU.(<P>PERFORMED BITE CHECK OF APU ECM IAW AMM 49-61-05 AND SELF TEST, NO FAULT FOUND. APU STARTED THIRD ATTEMPT, OPS CHECK GOOD AND NO FAULTS NOTED.</P>)Nov 20, 2019 · N1489A · Boeing 76731KSDR HALA2019111800490Starter · unknownETOPS SIGNIFICANT SYSTEM - APU FAULT ON START-UP UNABLE RESTART. // REMOVED AND REPLACED ECB PER AMM 49-61-34. CONDITION SAME. REPLACED APU FUSE 6KA1 PER AMM 49-42-00 AS PRECAUTIONARY. PERFORM ELECTRICAL INSPECTION OF APU STARTER TERMINALS AND RELAYS PER ESPM Nov 16, 2019 · N385HA · Airbus A330243SDR AALA2019111549014Seal · leakingAIRCRAFT WAS GROUNDED: PILOT REPORTS ON DESCENT FLIGHT ATTENDANTS AND PASSENGERS HAD SMELL OF BURNING, PLASTIC. COMPLAINED OF SORE EYES AND HEADACHE. MAINTENANCE REMOVED AND REPLACED APU STARTER MOTOR SEAL IAW AMM 49-42-51. OPS AND LEAK CHECK GOOD.Nov 13, 2019 · N722US · Airbus A319112SDR UIEA2019111435897Apu · malfunctionedAFTER LANDING; APU START EICAS MSG, APU FAULT.(<P>PERFORMED VISUAL CHECK OF THE APU OIL NOT VISIBLE IN SIGHT GLASS. SERVICED APU IAW AMM 12-13-04 AND PERFORMED APU OPERATIONAL CHECK; OPS CHECK GOOD AT THIS TIME. VERIFIED OIL CAP IS INSTALLED. NO LEAKS NOTED.</Nov 13, 2019 · N1181A · Boeing 7673Y0SDR UIEA2019111425895Apu · malfunctionedAPU WOULD NOT START DURING TAXI IN, WORKED FINE AT DEPARTURE STATION.(<P>PERFORMED APU BITE IAW AMM 49-61-05, NO FAULTS NOTED AT THIS TIME. OPS CHECKED APU IAW AMM 49-11-00, OPS CHECK GOOD AT THIS TIME.</P>)Nov 12, 2019 · N1489A · Boeing 76731KSDR UIEA2019111435900Apu · malfunctionedAPU RELIABILITY COLD SOAK START ACCOMPLISHED ON FLT RFD TO SCK. SAT -66*C, FL 400, START UNSUCCESSFUL, 3 ATTEMPTS.(<P>PERFORMED ECU BITE IAW FIM 49-11 FT 958 LEG 4. REASON SHUTDOWN OCCURRED, REFERENCES DOOR SYSTEM. NO FLAGS. CLEARED ECU. OPS CHECK NORMAL IAW ANov 12, 2019 · N1489A · Boeing 76731KSDR UIEA2019111205888Apu · faultedAPU FAULT ON TAXI IN, TRIED TO START 3 TIMES.(<P>PERFORMED SELF AND BITE CHECK OF THE ECU IAW AMM B767 49-61-05, NO FAULTS FOUND. ABORTED START MESSAGE, APU STARTED ON FOURTH ATTEMPT. OPS CHECK GOOD AT THIS TIME (1ST ATTEMPT BY MX). BATTERY RECOVERED FROM EARLNov 10, 2019 · N1487A · Boeing 76731KSDR ASAA201911131318Converter · failedAPU FAILED 2 START ATTEMPTS. FAULT LIGHT ILLUMINATED WITH EGT @ 900C AND APU MAKING RATTLING NOISE. GROUNDED - YES. REMOVED AND REPLACED STARTER CONVERTER UNIT. REF B737-800 AMM 49-41-61. OPS CHECK GOOD.Nov 9, 2019 · N508AS · Boeing 737890SDR ASAA2019110431252Unknown · malfunctionedAPU, NO ELECTRICAL AVAILABLE. GROUNDED - YES. BLUE PWR AVAIL LIGHT IS ON BUT NO VOLTS / FREQS SHOWING AND WILL NOT GO ONLINE. SHUT DOWN APU AND CYCLED GCU C/B'S (GCU TESTED NML). APU STARTED AND CAME ONLINE, CKS NML REF B737-900 AMM 24-21-00. GND VERIFICATION Nov 4, 2019 · N440AS · Boeing 737990ERSDR UIEA2019110205836Unknown · malfunctionedAPU AUTO SHUTDOWN PRIOR TO BLOCK OUT.(<P>PERFORMED BITE TEST ICU IAW AMM 49-11 FAULT 3 958, OPS TEST OK.<BR /></P>)Nov 2, 2019 · N1229A · Boeing 767306SDR ASAA2019110131223Ignition Unit · faultyDURING APU START CREW ON RAMP REPORTED LARGE VOLUME OF SMOKE, APU START ABORTED AND FAULT LIGHT OBSERVED ON. GROUNDED - YES. REPLACED APU IGNITION UNIT REF B737-800 AMM 49-41-31. ALSO REPLACED IGNITOR PLUG REF AMM 49-41-51. OPS CK GOOD. INDICATIONS NORMAL.Nov 1, 2019 · N581AS · Boeing 737890SDR UIEA2019110105833Unknown · malfunctionedAFTER LANDING, APU DID NOT START, TWO ATTEMPTS.(<P>PERFORMED OPERATIONAL CHECK IAW AMM 49-60-00, APU STARTED, NO FAULTS NOTED.</P>)Oct 31, 2019 · N645GT · Boeing 767324SDR UIEA2019102965792Control Unit · failedAPU SHUTDOWN IN THE BLOCKS. TURNED APU SWITCH OFF (1 MINUTE), RE-ATTEMPTED START, FAULT LIGHT STAYED ILLUMINATED. NO START.(<P>OK TO DEFER APU IAW MEL 49-11-01A DUE TO AUTO SHUTDOWN. TRANSFERRED TO MDDR #119677 PER MEL 49-11-01A, CAT 'C', DUE DATE: 04-NOV-19.<Oct 25, 2019 · N1381A · Boeing 767316SDR P5CA2019102420211Tru · malfunctionedAPU WON'T START. (<P>TRANSFERRED TO MDDR #119510 IAW DDG 49-11-01A, CAT 'C', DUE DATE: 01-NOV-19. PLACARD INSTALLED. DISPATCH NOTIFIED YM @ 1443Z.</P><P>LP 1101236 - M2: T/S PER FIM 49-11. NEEDS APU TRU, P/N 60B40104-2. DMI #119510 REMAINS OPEN. </P><P>REF LOGOct 22, 2019 · N642GT · Boeing 7673Y0SDR UIEA2019102325782Apu · unknownAPU FAILED TO START ON TAXI IN. (<P>PERFORMED TWO SUCCESSFUL APU STARTS IN A ROW WITH NO DEFECTS NOTED PER AMM 49-00-00, OPS NORMAL. </P>)Oct 22, 2019 · N1619A · Boeing 7673Y0SDR UIEA2019102205776Apu · malfunctionedAPU COLD SOAK START UNSUCCESSFUL, 3 ATTEMPTS @ FL 390, SAT -38 DEG.(<P>COMPLIED WITH OPS CHECK OF THE APU. START SUCCESSFUL 2 TIMES ON GROUND IAW AMM 49-11-00, OPS GOOD. REQUESTED COLD SOAK ON NEXT FLT. NOTE: MDDR 119439, 25-AP-01, PREVIOUSLY OPENED IS STILL Oct 21, 2019 · N1499A · Boeing 767328SDR UIEA2019102215761Apu · malfunctionedAPU FAULT ON TWO START ATTEMPTS.(<P>PERFORMED BITE CHECK OF APU ECU IAW B767 AMM 49-61-05, OPS CHECK NORMAL. APU STARTED ON 3 ATTEMPT. OPS CHECK NORMAL, NO FAULTS FOUND.</P><P>NOTE: LP 1213015 - M4: AIRCRAFT RELEASED TO ETOPS SERVICE FOR APU COLD SOAK START VEOct 20, 2019 · N1499A · Boeing 767328SDR UIEA2019101765737Apu · malfunctionedAPU FAULT, ATTEMPTED 3 STARTS WITH NO SUCCESS. APU DOOR STATUS MESSAGE APPEARED MOMENTARILY. PERFORMED APU OPERATIONAL TEST, OPS CHECK GOOD PER AMM 49-11-00. ALSO PERFORMED APU CONTROL UNIT BITE TEST, NO FAULTS NOTED AT THIS TIME.Oct 16, 2019 · N1499A · Boeing 767328
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