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 UIEA2020082471782Ecu · malfunctionedAPU RELIABILITY COLD START ON FLT LEG BWI-PDX FL360-50C. START UNSUCCESSFUL. PERFORMED APU ECU BITE CHK MINI FLAG 1,2,3,48. SUSPECT APU ECU AT FAULT. R/R APU ECU (OFF PART: PN2117342-20, SN B0380) IAW AMM 49-61-05. 3 SUCCESSFUL APU STARTS. OPS CHK GOOD. NO FASDR ASAA2020081423018Converter · malfunctionedAPU GEN KICKED OFFLINE, 0 VOLTAGE/ 0 FREQUENCY DISPLAYED. GROUNDED - YES. REPLACED APU START CONVERTER UNIT IAW B737-900 AMM 49-41-61. ETOPS GROUND VERIFICATION SUCCESSFUL. ALL OTHER REQUIRED OP CHECKS GOOD IAW B737-900 AMM 24-21-00 49-41-61 AND 30-42-00.SDR UIEA2020081421757Apu · malfunctioned3 ATTEMPTS TO START APU AFTER LANDING, UNSUCCESSFUL.(<P>PERFORMED BITE CHECK ON APU ECU. "ABORT START" MESSAGE NOTED AND CLEARED. APU STARTED FIRST ATTEMPT. OPS NORMAL. NO FAULTS NOTED IAW AMM 49-11-00.<BR /></P>)SDR UIEA2020082071795Warning Message · false activationAPU FAULT EICAS MESSAGE AFTER 2 START ATTEMPTS. PERFORMED BITE CHECK ON APU ECU, NO FAULTS NOTED. MAINT STARTED APU FIRST ATTEMPT, NO FAULTS, REF: AMM 49-61-00.SDR P5CA2020081410282Ecu · malfunctionedAPU PNEUMATIC FUNCTION INOP( DUCT PRESS TOO LOW)(<P>TRANSFERRED TO MDDR 132716 AS PER MEL 49-11-01-01 CAT C.<BR /></P><P><BR DATA-MCE-BOGUS="1" /></P><P>REMOVED AND REPLACED APU ECU THEN OPERATED CHECK OK PER AMM 49-61-05/401. CLEARED MDDR 132716. NOTIFIED MCCSDR UIEA2020081411748Apu · malfunctionedAPU FAULT. APU WOULD NOT START. THREE ATTEMPTS MADE.(<P>PERFORM BITE AND SELF TEST OF ECU PER B767 AMM 49-61-05 START ABORT MESSAGE DISPLAYED. NO FAULTS NOTED AT THIS TIME. APU START BY MX SUCCESSFUL. OPS CHECK GOOD.<BR /></P>)SDR HALA2020081000169Igniter · malfunctionedETOPS SIGNIFICANT SYSTEM - APU IN-FLIGHT START PER MOC OAT - 45 C FL 350 APU FAULT ECAM ILLUMINATED. 1 ATTEMPT SUCCESSFUL START. 52 SECONDS FROM START TO AVAIL. PERFORMED APU BITE TEST - OK. POST FLIGHT REPORT SHOWED LUBE PUMP & GEN SCAV FILTERS. ALSO CHECKESDR UIEA2020080401705Apu · faultedAPU FAULT AFTER 3 START ATTEMPTS ON THE GROUND. FOUND BPCU CB IN THE OPEN POSITION. RESET CB, THEN PERFORMED BPCU BITE. NO FAULTS. STARTED APU IN THE FIRST ATTEMPT. NO FAULTS NOTED. REF AMM 24-22-00.SDR P5CA2020080420272Apu · faultedAPU FAULT, APU BITE CARRIED OUT, NO LIGHT OFF, MINI FLAG CODE IGNITION UNIT. APU START ATTEMPT CARRIED OUT NORMAL. APU RESET IAW AMM 49-61-00.SDR P5CA2020080430273Ignition Unit · failedAPU COLD SOAK START UNSUCCESSFUL AFTER 3 ATTEMPTS AT FL 320, OAT -39C. APCU BITE SHOWS FAULT REASON NO LIGHT OFF, FAULT LRU IGNITION UNIT. REMOVED AND REPLACED APU IGNITER PLUG. . REMOVED AND REPLACED APU IGNITION UNIT IAW AMM 49-41-03-401. CHECKED GOOD.SDR UIEA2020072971626Apu · faultedAPU FAULT ON THREE START ATTEMPTS, AFTER LANDING GROUND OPS CHECKED GOOD. APU CONT UNIT BITE CHECKED GOOD, APU COLD SOAK REQ DUE TO MX, REF ITEM M-4, REF AMM 49-00-00.SDR UIEA2020071501543Unknown · malfunctionedAPU FAULT ON START ATTEMPT AFTER LANDING, SUCCESSFUL ON SECOND ATTEMPT. PERFORMED BITE OF APU ECU, NO FAULTS NOTED. APU STARTED ON FIRST ATTEMPT. OPS CHECK GOOD.SDR UIEA2020071501556Unknown · malfunctionedAPU FAULT. TRIED TWICE TO START ON GROUND, MAX RPM 2ND ATTEMPT 29. PERFORMED APU OPERATIONAL START PROCEDURE WITH NO DEFECTS NOTED, IAW AMM 49-11-00, APU OPERATES NORMAL.SDR UIEA2020071401535Unknown · malfunctionedAPU FAULT AFTER LANDING ON START ATTEMPT. SUCCESSFUL START ON SECOND ATTEMPT. PERFORMED OPERATION CHECK OF APU PER 49-11-00/501. OPS CHECKS OK.SDR UIEA2020071311518Ecu · failedAPU FAILED TO START TWICE, AFTER LANDING. EGT REACHED 780 DEGREES AND RPM HUNG AT 30%, APU FAULT EICAS MESSAGE. FOUND BATTERY AT 37 AMPS, REMOVED AND REPLACED THE BATTERY IAW AMM 24-31-05. REMOVED AND REPLACED THE APU ECU IAW AMM 49-61-05. OPS CHECKED NORSDR UIEA2020070761488Apu · malfunctionedAPU RELIABILITY COLD SOAK, TWO STARTS UNSUCCESSFUL WITH APU FAULT. OPS CHECKED GOOD ON GROUND IAW AMM 49-11-00. NO FAULTS NOTED.SDR UIEA2020070701501Fault Message · illuminatedAPU FAULT MESSAGE. THREE ATTEMPTS. PERFORMED ECU BITE TEST, CHECKED OK, INSPECTED APU FOR LEAKS, NO LEAKS FOUND, APU OIL VISUAL CHECKED OK, APU ECU BITES OK IAW 49-11, FAULT TREE 987, APU LEAK CHECKED OK IAW AMM 49-16-00. APU CHIP DETECTORS OK IAW 49-27-0SDR UIEA2020070601482Unknown · malfunctionedAPU FAULT DURING START ON TAXI IN, NO START. PERFORMED MULTIPLE STARTS IAW AMM 49-00-00. ALL STARTS SUCCESSFUL. NO FAULTS FOUND AT THIS TIME.SDR ASAA2020070632868Unknown · malfunctionedAPU FAILED START AT FL400, FL400, FL300 AND FAILED START ON THE GROUND. GROUNDED - YES. DURING INIT EVALUATION "APU FAULT" LIGHT CAME ON WHEN TRYING TO START, 3 TIMES. APU BITE TEST SHOWED "49-15004 INLET DOOR SHUTDOWN." ACCOMPLISHED FIM TASK 49-10 TASK 80SDR UIEA2020070101455Unknown · malfunctionedAPU FAULT 3 START ATTEMPTS ON GROUND, RPM STAGNATES AROUND 27-28. PERFORMED APU BITE PROCEDURE PER AMM 49-61-05. NO FAULTS. PERFORMED 3 SUCCESSFUL APU STARTS ON GROUND. APU OPS NORMAL IAW AMM 49-11-00.SDR P5CA2020063000208Starter · wornFOUND APU STARTER MOTOR BRUSH WORN OUT. IAW AMM 49-41-01-404-007 R 130 TO REPLACE STARTER MOTOR OF APU AND PERFORMED OPER TEST, RESULT NORMAL.SDR UIEA2020062971414Apu · malfunctionedAPU STARTED ON THIRD ATTEMPT, UNABLE TO START APU INFLIGHT. PERFORMED BITE ON APU ECU, NO FAULTS NOTED. APU START AND OPS NORMAL IAW AMM 49-61-05-201.SDR UIEA2020062001324Unknown · malfunctionedAPU FAULT WOULD NOT START ON FIRST OR SECOND ATTEMPT. PERFORMED MULTIPLE STARTS WITH NO FAULTS FOUND IAW AMM 49-00-00. OPS CHECKED GOOD.SDR UIEA2020061701305Apu · unknownAPU DID NOT START AFTER LANDING 2 ATTEMPTS. PERFORMED BITE TEST PER FIM 49-11 FT 958. TESTED OK. STARTED APU 1ST ATTEMPT.SDR UIEA2020061531280Fault Message · false activationAPU FAULT ON GROUND, BITE CHECK OF THE APU ECU IAW AMM 49-61-05 AND SELF TEST. NO FAULT FOUND. OPS CHECKED GOOD IAW AMM 49-11-00.SDR UIEA2020061521279Relay · failedAFTER LANDING, ATTEMPTED TWO APU STARTS. EACH ATTEMPT RECEIVED APU FAULT MESSAGE. REMOVED AND REPLACED APU DOOR ACTUATOR IAW AMM 49-15-06. NO FIX. UPON OPERATIONAL TEST FOUND CIRCUIT BREAKER TRIPPING. TROUBLESHOT IAW FIM 49-11 FT 959, REMOVED AND REPLASDR UIEA20200611275Apu · malfunctionedON ARRIVAL, APU DID NOT START. PERFORMED A BITE, NO FAULTS NOTED. APU OIL QTY SHOWED ZERO. AFTER RESET APU OIL SHOWED FULL. STARTED NORMAL IAW AMM 45-41-00.SDR AALA202006109003Converter · malfunctionedAIRCRAFT WAS GROUNDED: FLIGHT ATTENDANT REPORT A BURNING ELECTRICAL SMELL THROUGHOUT THE ENTIRE CABIN AT THE GATE DURING BOARDING. MAINTENANCE DETERMINED THE APU STARTER CONVERTER UNIT IN THE E&E BAY HAD A BURNT ELECTRICAL SMELL AND REPLACED IT PER AMM 49-41--SDR UIEA2020061091243Warning Light · false activationAPU FAULT EICAS TWICE DURING APU START, APU FAILED TO LIGHT OFF BOTH TIMES. FOUND NO FAULTS ON APU ECU. STARTED APU IAW B767AMM 49-11-00. STARTED NORMAL. SUSPECT INCORRECT START PROCEDURES BY CREW.SDR UIEA2020060101171Starter · inoperativeAPU FAULT ON TAXI-IN. REMOVED AND REPLACED APU BATTERY IAW AMM 24-31-04. APU BATTERY VOLTAGE CHECKS GOOD. ALSO REPLACED APU STARTER IAW AMM 49-41-01 OPS CHECK OK. APU BATTERY OFF PART: PN 018550-000, SN 121356. THIS CLEARS MDDR 129070.SDR UIEA2020060201186Unknown · malfunctionedAPU "FAULT" AFTER 1ST AND 2ND START ATTEMPT. AFTER LANDING ACCOMPLISHED APU START WITH GOOD RESULTS. APU BITE CHECK DISPLAYED "START ABORT" W/ "SEE MY MANUAL" ON TWO PREVIOUS START ATTEMPTS REF FIM 49-11 FAULT TREE 989.SDR UIEA2020052701129Unknown · malfunctionedAPU FAULT EICAS ON FIRST START ATTEMPT. APU STARTED ON 2ND ATTEMPT. PERFORMED APU ECU BITE TEST PER AMM 49-61-05-742-027. TEST OK. OPS TEST NORMAL. APU START WAS NORMAL. NO FAULT MSGS AT THIS TIME.SDR UIEA2020052201111Unknown · malfunctionedAPU START ON 2ND ATTEMPT AFTER LANDING. FAULTED ON 1ST ATTEMPT.(<P>PERFORMED APU ECU BITE TEST REF AMM 49-61-05. NO FAULTS FOUND. TEST PASSED OK FOR RTS.<BR /></P>)SDR UIEA2020051801070Status Message · false activationDURING TAXI IN APU FAULT EICAS MESSAGE DISPLAYED DURING FIRST START ATTEMPT, REF QRH = TRIED SECOND START, SECOND START SUCCESSFUL.(<P><SPAN>PERFORMED APU BITE IAW 49-61-05, NO FAULTS NOTED AT THIS TIME.</SPAN><BR /></P>)SDR UIEA2020051201018Unknown · malfunctionedAPU FAULT ON START UP.(<P>OPS CHECKED IAW FIM 49-11 FT 958. NO FAULTS NOTED AT THIS TIME. APU STARTED ON FIRST START. PERFORMED 3 SUCCESSFUL STARTS. PERFORMED VISUAL OF APU AREA. NO DEFECTS NOTED. TRANSFERRED TO MDDR 128259 IAW MEL 49-11-01A, CAT 'C', DUE 22MASDR UIEA2020051100997Unknown · malfunctionedAFTER LANDING APU FAILED TO START TWICE.(<P>PERFORMED APU CONTROL UNIT BITE TEST REF AMM 49-61-05-742-027. NO FAULTS FOUND. APU STARTS NORMAL ON GROUND. OK FOR RTS.</P>)SDR ASAA2020043032692Starter Gen · inoperativeAPU WILL NOT START NO ROTATION. GROUNDED - YES. REMOVED AND REPLACED APU STARTER GENERATOR PER B737-800 AMM 49-41-21. LEAK AND OPS CHECK GOOD. CLEARS MEL 49-1B.SDR UIEA2020042700841Igniter · defectiveAPU INOP.(<P>TRANSFER TO MDDR #127587 IAW DDG 49-11-01A, CAT C, DUE DATE 05/06/20.</P><P>LOG PAGE 1138319: REMOVED AND REPLACED APU IGNITOR PLUG IAW AMM 49-41-02. OPS CHECK GOOD. THIS CLEARS DMI #127587.</P>)SDR ASAA2020041432645Starter Gen · faultedAPU FAULT LIGHT. WILL NOT START. GROUNDED - YES. ACCOMPLISHED APU BITE FOUND ERROR CODE 49-41012 NO APU ROTATION SHUTDOWN. REMOVED AND REPLACED STARTER-GENERATOR REF B737-900 AMM 49-41-21/401. STARTER-GENERATOR INSTALL TEST COMPLETED - NO DEFECTS NOTED. CURRENSDR UIEA2020041300735Unknown · malfunctionedAPU START AFTER THIRD ATTEMPT(<P>MX NOTED. APU BITE TEST PERFORMED REF AMM 49-61-05-742-027. NO FAULTS NOTED AT THIS TIME. ABORTED NO FAULTS NOTED AFTER APU BITE TEST.</P>)SDR UIEA2020040800718Relay · failedAPU WOULD NOT START. REACHED 17% AND WOULD SHUT DOWN.(<P>PERFORMED APU BITE PROCEDURE IAW FIM 49-11-00. FOUND FAULT "AC START CIRCUIT". FOLLOWED TS FIM TO BOX 23. REMOVED AND REPLACED RELAY K197 PER WDM 49-41-11. OPS CHECKED GOOD. APU OPERATIONAL.</P>)SDR UIEA2020040600696Unknown · malfunctionedAPU TOOK 3 ATTEMPTS TO START(<P>PERFORMED APU STARTING AND OPERATIONAL CHECK IAW AMM 49-11-00. NO DEFECTS NOTED. OPS CHECK NORMAL.</P>)SDR UIEA2020040600693Rotary Switch · defective(THIRD GRIPE) APU SWITCH EXTENDS BEYOND START, THEN RETURNS TO START VICE ON POSITION. NEEDS ADJUSTMENT. APU OPERATES 4.0.(<P>TRANSFERRED TO MDDR 126667 IAW DDG 49-11-01A, CAT C, DUE DATE 14APR2020.</P><P>LOG PAGE 1150016 ITEM 2: REMOVED AND REPLACED APU ROTARSDR UIEA2020040600684Exciter · faultyAPU FAULT ON START ATTEMPT. ATTEMPTED TWICE. 20 MAX RPM W/ NO EGT RISE.(<P>TRANSFERRED TO MDDR 126631 PER MEL 49-11-01A, CAT C, DUE DATE 13APR20. DI: JT @ 20:37Z.</P><P>BWI, 04APR, LP 1071367, ITEM M2: REMOVED AND REPLACED APU IGNITION EXCITER IAW AMM 49-41-03SDR ASAA2020040632586Unknown · malfunctionedAPU FAILED START AT FL 380 TWO TIMES. FAULT LIGHT ILLUMINATED DUE TO OVERTEMP. SUCCESSFUL CSS ACCOMPLISHED AFTER FAULT LIGHT EXTINGUISHED. GROUNDED - YES. PERFORMED APU BITE TEST, CURRENT STATUS NO FAULTS. FOUND FAULT IN HISTORY FOR AN OVERTEMP SHUTDOWN MAINT SDR HALA2020032700078Switch · malfunctionedETOPS SIGNIFICANT SYSTEM - ECAM APU FAULT. // T/S PER A330 TSM 49-62-00-810-916 4 D NO DEBRIS ON ELECTRICAL CHIP DETECTOR OR IN OIL FILTER ELEMENTS PER STEP 4.D SUSPECT GEN
SCAVENGE 591CT32 AND LUBRICATION 59KT37 DELTA P SWITCHES AT FAULT. R/R GEN SCAV DESDR P5CA2020032700135Starter · inoperativeAPU INOP (AUXILIARY POWER UNIT (APU), ER OPERATIONS NOT ALLOWED (NOTIFY DISPATCH) R60)(<P>TRANSFER TO MDDR 126307 IAW MEL 49-11-01A, CAT 'C'.</P><P>LP 1205568: T/S TO STARTER MOTOR. REMOVED AND REPLACED STARTER MOTOR ASSY IAW AMM 49-41-01. OPS CHK GOOD. THIS CSDR ASAA2020032732563Starter Gen · leakingAPU STARTER / GENERATOR LEAKING OIL. GROUNDED - YES. REMOVED AND REPLACED APU STARTER GENERATOR OPS/LEAK CHECKS NORMAL. NO OTHER DEFECTS NOTED. REF B737-800 AMM 49-41-21.SDR UIEA2020031700470Unknown · malfunctionedAPU FAULT LIGHT ON ATTEMPTED 2 STARTS, BOTH FAILED.(<P>PERFORMED FIM 49-11-04, NO DEFECTS NOTED AT THIS TIME. APU STARTED AS REQUIRED ON GROUND.</P>)SDR I5PA2020031675702Starter · wornAPU ABORTED START. TROUBLE SHOT AND FOUND STARTER BRUSHES WORN. REPLACED STARTER, PERFORMED OPERATIONAL CHECKS AND NUMEROUS STARTS WITH NO ISSUES. APU OK FOR SERVICE.
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