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 P5CA2021012200021Tru · malfunctionedAPU ABORT START. PERFORMED FIM 49-11 FT 989 TO SHEET 3 BLOCK 25. REMOVED AND REPLACED APU TRU, IAW AMM 24-32-04. OPERATIONS CHECK GOOD.SDR UIEA2021011400058Starter · inoperativeAPU FAULT ATTEMPTED 3 TRIES BUT NEVER STARTED. REMOVED AND REPLACED APU STARTER MOTOR ASSEMBLY, PER AMM 49-41-01. OPERATIONS CHECK CW AND APU START SUCCESFUL.SDR P5CA2021011500013Charger · inoperativeAPU INOPERABLE DUE TO APU BATTERY CHARGER EICAS MESSAGE. TRANSFERRED TO MDDR 140940, IAW MEL 49-11-01A, CAT "C". REMOVED AND REPLACED APU BATTERY CHARGER, IAW AMM 24-31-05. OPERATIONS CHECK GOOD AT THIS TIME. THIS CLEARS DMI NR 140940.SDR UIEA2021011400054Actuator · malfunctionedAPU COLD SOAK START -62 DEGREES SAT FL390 ATTEMPTS 3 UNSUCCESSFUL. APU DOOR STATUS MESSAGE AFTER EACH ATTEMPT(<P>TRANSFERRED TO DMI# 140868 IAW MEL 49-15-01-01A CAT C DUE DATE 23JAN2021. M PROCEEDURES C/W - APU DOOR DEACTIVATED OPEN.</P><P>18JAN21 - LP 1253321SDR UIEA2021011300046Starter · faultedAPU FAULT, FAILED TO START ON 2 ATTEMPTS. REMOVED AND REPLACED & APU STARTER, IAW AMM 49-41-01. OPERATIONS CHECK GOOD AT THIS TIME. REMOVED AND REPLACED ECU, IAW AMM 49-61-05. OPERATIONS CHECK GOOD AT THIS TIME. (SN: PN: 2117342-20). TIGHTENED APU VENT LSDR UIEA2021011100023Apu · unknownAPU WON'T START. TRANSFERED TO MDDR 140757 PER MEL 49-11-001A, DUE 21JAN21. PERFORMED APU BITE TEST. NO FAULTS FOUND, IAW AMM 49-61-05. PERFORMED 4 SUCCESSFUL STARTS, IAW AMM 49-11-00. THIS CLEARS DMI 140757.SDR UIEA2021010700017Apu · malfunctionedAPU WILL NOT START. TRANSFERRED TO MDDR NR 140596, IAW MEL 49-11-01A CAT C DUE DATE 17JAN 21 MX ACTION C/W. PERFORMED APU BITE, IAW B767 FIM 49-11 FT 958, NO DEFAULTS. THEN STARTED THE APU. APU STARTED IN THE FIRST ATTEMPT. ENGINE RPM & EGT PARAMETERS NORSDR DALA2021010600065Battery · damagedCREW REPORTS SMOKE AND FUMES IN CABIN. MAINTENANCE FOUND THE APU BATTERY WITH HEAT DAMAGE. THE APU BATTERY AND CHARGER WERE REPLACED. SYSTEM OPERATION IS NORMAL.SDR UIEA2021010200004Ecu · malfunctionedAPU BLEED AIR INOPERABLE WHILE APU RUNNING. REMOVED AND REINSTALLED APU ECU UNIT, IAW B767 AMM 20-10-01. PERFORMED OPERATIONS CHECK ON APU SYSTEM, IAW B767 AMM 49-11-00. CHECKS GOOD. NO FURTHER DEFECTS NOTED AT THIS TIME.SDR UIEA2021010400006Fault Message · false activationAPU FAULT WHEN STARTING AFTER LANDING. PERFORMED TEST ON GROUND, IAW AMM 49-41-01. OPERATIONS CHECK TEST OK.SDR UIEA2020123002627Apu · malfunctionedUNABLE TO START APU. TRANSFER TO MDDR NR 140208, CAT C, DUE DATE 08JAN2021, AS PER MEL 49-11-01-A. MCC NOTIFIED. PERFORMED SUCCESSFUL APU START, IAW AMM 49-11-00, NO FAULTS NOTED. THIS CLEARS MDDR 140208, PLACARD REMOVED, MCC NOTIFIED.SDR UIEA2020123002629Knob · missingAPU ECU CNTL KNOB MISSING. REMOVED AND REPLACED APU ECU. OPERATIONS CHECK OK, PER AMM 49-61-02.SDR UIEA2020122702617Control Panel · malfunctionedAPU START SELECTOR DOES NOT SPRING BACK FROM START TO ON POSITION WHEN SELECTED. TRANSFERRED TO MDDR 140101, IAW MEL 49-11-01A, CAT C, DUE 06JAN21. REMOVED AND REPLACED APU CONTROL PANEL, IAW BOEING 767 AMM 49-41-81. OPERATIONS TEST GOOD. THIS CLEARS DMI 1SDR ASAA2020122533758Exciter · faultyON APU STARTUP, APU FAULT LIGHT ILLUMINATED. GROUNDED-YES. REF B737-800 FIM 49-40 TASK 802, FOUND NO NOISE COMING FROM IGNITER PLUG DURING START. R & R IGNITER PLUG, REF B737-800 AMM 49-41-51. R & R IGNITER UNIT, REF AMM 49-41-39. R & R IGNITER LEAD, REF SDR UIEA2020122102599Charger · unknownAPU BATT CHARGER STATUS MESSAGE. R & R APU BATT CHARGER, PER AMM 24-31-05. OPERATIONS NORMAL AT THIS TIME, REF LP 1352703 ITEM 7 FOR APU COLD SOAK DMI.SDR UIEA2020121602585Apu · faultedAFTER LANDING EICAS "APU FAULT" 3 START ATTEMPTS. PER FIM 49-11 F/T 987 AND FIM 49-11 F/T 988 UP TO BLOCK 30. APU START SUCCESSFUL ON FIRST ATTEMPT, PER AMM 49-11-00. PERFORMED 3 SUCCESSFUL STARTS WITH NO FAULTS.SDR I5PA2020121468801Ignition Unit · failedDISCREPANCY-APU WOULD NOT START ON ARRIVAL. CORRECTIVE ACTION: REMOVED AND REPLACED APU IGNITION UNIT, IAW AMM 49-41-03. OPERATIONS CHECK OK.SDR ASAA2020121033681Exciter · faultyWHILE ACCOMPLISHING APU DEPRESERVATION APU WOULD NOT START. GROUNDED-YES. APU BITE SHOWED MESSAGE 49-41011, NO FLAME SHUTDOWN. INITIATED B737-800 FIM 49-40 TASK 802. IGNITER NOT AUDIBLE. REPLACED IGNITER AND IGNITER LEADS, REF B737-800 AMM 4-41-51 AND 49-SDR QXEA2020120300334Apu · malfunctionedAPU FAIL DURING START AT GATE, GROUND CREW REPORTS 2' FLAME BRIEFLY (APU INOPERABLE). REMOVED FROM SERVICE. NO PRESENT FAULTS IN CDS. 12-2,133-2,102-3,110-0054-2 AND 053-2 UNDER HISTORICAL FAULTS. C/W VISUAL INSPECTION OF APU COMPARTMENT, REF Q400 HS NR 49SDR UIEA2020112302446Egt Indication · reads highINFO ONLY, APU FAILED TO START FIRST ATTEMPT. EGT RAPIDLY REACHED 775 AT 30% RPM & STOPPED ACCELERATING APU. APU FAULT EICAS MESSAGE, NOTED BY MX. APU OPERATIONS CHECK GOOD, IAW AMM 49-11-00.SDR ASAA2020111933578Switch · faultedAPU FAULT LIGHT WHEN TRYING TO START APU. GROUNDED-YES. REF B737-900 AMM 49-15-41/401 REMOVED AND REPLACED APU AIR INLET DOOR POSITION SWITCH. OPERATIONS TESTS NORMAL.SDR UIEA2020111602397Apu · malfunctionedAFTER LANDING APU FAULT AFTER 3 ATTEMPTS. PERFORMED OPERATIONS TEST OF APU, IAW AMM 49-11-00, APU STARTED AND STOPPED NORMALLY 3 TIMES ON GROUND. PERFORM APU ECU BITE, IAW FIM 49-11 F/T 958 FOUND NO FAULTS ON ECU. OPERATIONS NORMAL AT THIS TIME.SDR UIEA2020111602405Apu · malfunctionedAPU FAILED TO START ON TWO ATTEMPTS. PERFORMED APU OPS CHECK, IAW AMM 49-11-00. OPERATIONS CHECKED GOOD.SDR IPXA2020111362324Ecu · failedINSPECTION TYPE: NA ATB-AC OUT OF SERVICE. EMERGENCY DECLARED, LANDED W/OUT INCIDENT, NO EMERGENCY EQUIPMENT USED. APU FAULT, APU SHUTDOWN WHICH RESULTED IN AN AIR TURNBACK. DOWN TO ONE GEN, AS FAULT LIGHT NEVER WENT OUT. APU ECU BITE CHECK SHOWED "DC POWESDR QXEA2020111200313Igniter · inoperativeAPU FAIL MESSAGE ON APU START FOLLOWED BY APU BLEED EXHAUST SMELL ON WHEN APU START ACCOMPLISHED 2ND TIME AFTER MESSAGE EXTINGUISHED. REMOVED FROM SERVICE. INTERROGATED CMC FOUND FAULT CODE APU FAIL TO LIGHT. C/W E175 FIM TASK 49-42-10-00-810-805-A00 STEPS SDR I5PA2020110675701Starter · wornDISCREPANCY: APU INOPERABLE. CORRECTIVE ACTION: REMOVED AND REPLACED APU STARTER, IAW AMM 49-41-01. OPERATIONS CHECK OK.SDR UIEA2020110902368Starter · inoperativeAPU FAILED TO START (3 ATTEMPTS) APU INOPERABLE, DOOR CLOSED. TRANS TO DMI 137350, PER MEL 49-11-01B CAT "B" DUE 09NOV20 DISP T/R 2154Z SP 07NOV20. T/S APU AND FOUND APU STARTER INOPERABLE. REMOVED AND REPLACED APU STARTER, IAW AMM 49-41-01. OPERATIONS TESSDR CALA2020110601245Ecu · failedAPU LOW OIL PRESSURE LIGHT LIGHT ON, APU HAD A PROTECTIVE SHUTDOWN APU RUNNING FROM GATE APPROXIMATELY 25 MIN INTO FLIGHT AT FL370 UNCOMMANDED SHUTDOWN T/S, PER B737 FIM TASK 49-70-00-810-807. REPLACED APU ECU, PER AMM TASK 49-61-12-000(400)-801. REPAIR CONFSDR ASAA2020101433355Exciter · inoperativeAPU WILL NOT START AND HAS FAULT LIGHT COME ON DURING START SEQUENCE. GROUNDED-YES. ATTEMPTED TO START APU FOLLOWING STEPS ON B737-800 FIM 49-40 TASK 802. FOUND NO NOISE FROM IGNITER PLUG. REPLACED IGNITER PLUG LEAD, REF B737-800 AMM 49-41-52-400-801 AND ISDR UIEA2020101202221Starter · inoperativeAPU INOPERABLE, ER OPERATIONS NOT ALLOWED (NOTIFY DISPATCH) R60. TRANSFERRED TO MEL 49-11-01A, MDDR 135912, CAT C. 12OCT, CVG MX. REMOVED AND REPLACED APU STARTER MOTOR ASSEMBLY, IAW B767 AMM 49-41-01. OPERATIONS CHECK GOOD, LEAK CHECK GOOD. PERFORMED 3 SSDR UIEA2020101282196Fault Light · false activationAPU FAULT EICAS MESSAGE ON START. PERFORMED BITE OF ECU, IAW FIM 49-11 FT 958. LAST 2 RUNS START ABORTED MINI FLAG TEST SHOWS OK. PERFORMED OPERATIONS CHECK OF APU, IAW AMM 49-11-00. APU STARTED ON FIRST ATTEMPT. ALL OPERATIONS NORMAL, NO DEFECTS NOTED ATSDR UIEA2020101272187Tru · malfunctionedAPU FAULT ON FIRST ATTEMPT. TRANSFERRED TO MDDR 135610, PER DDG 49-11-01A. REMOVED AND REPLACED APU TRANSFORMER RECTIFIER UNIT, AS PER AMM 24-32-04 AND APU FAULT ANN SWITCH ASSEMBLY, AS PER AMM 33-16-02. OPERATIONAL CHECKS FOUND OK. THIS WILL CLEAR MDDR 13SDR UIEA2020100972188Control Unit · failedAPU FAULT ON FIRST ATTEMPT. REMOVED AND REPLACED APU CONTROL UNIT. OPERATIONS CHECKS NORMAL, IAW AMM 49-61-05.SDR UIEA2020092902129Unknown · faultedAPU FAILED TO START FIRST ATTEMPT AFTER LANDING. 785 EGT 29% RPM THEN SHUTDOWN AND "APU FAULT" MESSAGE. SUCCESSFUL SECOND START ATTEMPT. PERFORMED APU START PROCEDURE, OPS CHECK NORMAL, IAW AMM 49-11-00.SDR UIEA2020092302053Ecu · malfunctionedNO DUCT PRESSURE FROM APU. TRANSFERED TO MDDR 134869, DDG 49-11-01-01, CAT C. PERFORM FIM TASK 49-11 FT 981 UP TO BLOCK 26, NO DUCT LEAK NOTED AND NO DEFECTS NOTED. STANDBY C-72L/11R DYBY W 10L/9R DUCT PRESSURE WITHIN 2 PSI. REMOVED AND REPLACED APU CONTROSDR UIEA2020092532058Starter · failedAPU FAILED TO START. TRANSFERRED TO MDDR 134827, PER MEL 49-11-01A, CAT C, DUE 2 0CT 20. REMOVED AND REPLACED APU STARTER MOTOR. OPS CHECKS GOOD, IAW AMM 49-41-01. MCC NOTIFIED, PLACARD REMOVED (CLEARS DMI NR 134827) DI:DL 08:53Z.SDR ASAA2020092233216Ignition Sys · openAPU FAULT ILLUM DURING ATTEMPTED START. GROUNDED-YES. CONFIRMED APU NO START AND FUEL FLOW. MX FAULT 49-41181 REPORTED. REPLACED APU IGNITION UNIT, IAW B737-900 AMM 49-41-31. GROUND VERIFICATION OPS CHK GOOD.SDR UIEA2020092512025Fault Light · false activationREPEAT WRITEUP APU FAULT ON 1 ATTEMPT, 2ND APU ATTEMPT SUCCESSFUL. PERFORMED APU CONTROL UNIT, IAW AMM 49-61-05. BITE TEST OPS CHECK AND TEST OK.SDR UIEA2020092212024Apu · malfunctionedAPU COLD SOAK START 1ST ATTEMPT SUCCESSFUL THEN DIED, 2ND ATTEMPT NO ROTATION. 1242Z FL390 SAT-51. FOUND APU OIL TO BE LOW. SERVICED APU OIL TO FULL AT 4362.2 HRS, IAW AMM 12-13-04. PERFORMED APU ECU BITE, IAW FIM 49-11 FT 958. FAULTED UNDER SPEED CONDITISDR UIEA2020091521982Apu · malfunctionedAPU WILL NOT START, 3 ATTEMPTS MADE. TRANSFERRED TO MDDR 134284 IAW MEL 49-11-01A, CAT C. DUE DATE 22 SEP 20. PERF FIM 49-11 FT 991, BLOCK 11, FOUND 115 VAC AT TRU START RELAY PINS A2,B2, AND C2. APU TRU NEEDS TO BE REPLACED (P/N 28VS200Y-4B-2). CONFIRMED SDR UIEA2020091541989Charger · inoperativeAUXILIARY POWER UNIT INOPERABLE, ER OPERATIONS NOT ALLOWED (NOTIFY DISPATCH) R60. TRANSFERRED TO MDDR 134217 IAW MEL 49-11-01A, CAT C. REMOVED AND REPLACED APU BATTERY CHARGER, IAW B767 AMM 24-31-05. OPS CHECK GOOD, THIS CLEARS MDDR 134217. MCC EDGAR NOTIFSDR UIEA2020091401995Apu · malfunctionedAPU RELIABILITY COLD START ACCOMPLISHED ON FLT 1 EA TPC-SCK SAT -54C FL 380, START. UNSUCCESSFUL ON 3RD ATTEMPT. PERFORMED BITE ON ECU, IAW FIM 49-11 FL 987. NO FAULTS NOTED, APU OPERATION NORMAL.SDR UIEA2020090501954Ecu · malfunctionedAPU AUTO SHUT DOWN FAULT LIGHT ILLUMINATED. ITEM TRANSFERRED TO MDDR #133942, IAW MEL 49-11-01A, CAT C. REMOVED AND REPLACED APU ECU, IAW AMM 49-61-05/401. OPS CHECK GOOD, IAW AMM 49-11-00-802. THIS CLEARS MDDR #133942, MCC NOTIFIED, PLACARDS REMOVED.SDR P5CA2020090100299Apu · malfunctionedAFTER LANDING ON APU START, APU FAULT, EICAS MSG ONE RESTART ATTEMPT FAILED. ITEM TRANSFERRED TO DMI 133730 PER MEL 49-11-01A, CAT C. REPLACED APU IAW WORK CARD A-49-999-00-01, OPS GOOD. THIS CLEARS MDDR 133730. PLACARD REMOVED.SDR UIEA2020082801887Apu · unknownAPU FAILED TO START 3 ATTEMPTS(<P>PERFORMED B 767 FIM 49-11 FT 459 FIG 103 APU ECU BITE. NO MINI FLAGS. RESET ECU. APU START NORMAL<BR /></P>)SDR UIEA2020083181889Apu · inoperativeAPU FAILED TO START. 3 ATTEMPTS.(<P>PERFORMED B767 FIM 49-11 FT 459 FIG 103. APU BITE. NO FAULTS NOTED. NO MINI FLAGS. RESET ECU, APU START NORMAL.</P>)SDR UIEA2020083101897Apu · unknownAPU FAULT LIGHT ON 2 START ATTEMPTS(<P>OPS CHECKED APU START. STARTED 05 CONSECUTIVE TIME WITH NO ISSUES. IAW AMM 49-11-00 OPS GOOD </P>)SDR UIEA2020082651867Warning Message · false activationON TAXI APU FAULT EICAS MSG ON FIRST APU START ATTEMPT. C/W QRH, SUCCESSFUL START ON SECOND ATTEMPT. PERFORMED APU START PROCEDURES IAW AMM 49-11-00. OPS TEST OK.SDR UIEA2020082651871Ecu · malfunctionedNO APU START AFTER 3 ATTEMPTS. PERFORMED APU BITE REF FIM 49-11 FT 987, OBSERVED MINI FLAG 34. REMOVED AND REPLACED APU ECU IAW 49-61-05. STARTED APU 4 TIMES, NO FLTS, FLAGS ON ECU. PLACED LOAD ON APU. PERFORMED A DRY MOTOR 32 ENG IAW AMM 71-00-00. NO FASDR ASAA2020082193044Converter · inoperativeON TAXI INTO THE GATE THE APU WOULD NOT START AND THE APU FAULT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 49-40 TASK 803. NO DEBRIS IN MAGNETIC DRAIN PLUG, APU FREELY ROTATES. ACCOMPLISHED GVI OF APU HARNESS AND STARTER GENERATOR HARNESS
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