JASC 4900
Service difficulty reports · 1,840
Reports filed under 4900 · Airborne Auxiliary Power Unit (APU) 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 = '4900' 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 = '4900' 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 UALA2011032101320Mount · deterioratedAPU FWD RT MOUNT IS DETERIORATED. REPLACED WITH MOUNT.SDR UALA2011021400777Battery · faultedAPU INOPERATIVE. APU BATTERY READING 4 VOLTS INSTALLED NEW APU BATTERY AND BATTERY CHARGER. APU OPS NORMAL. NO FAULTS APUC.SDR UALA2011011200161Valve · faultyAPU DUCT PSI DOES NOT INCREASE FOR ENG START. TAKES TWO MINS TO REACH STARTER CUTOUT APU BLEED VALVE CONFIRMED CLOSED. FOUND SURGE VALVE STUCK PARTIALLY OPEN. REPLACED SURGE VALVE. OPS AND LEAK CHECKED GOOD.SDR C2XA11IA004Apu · odorFLIGHT 3155 THE CREW REPORTED A FUEL SMELL DURING APU START. MAINTENANCE PLACED THA APU ON MEL AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. ON 01/02/11 MAINTENANCE INSPECTED THE AIRCRAFT OPERATIONALLY TESTED THE APU AND PERFORMED ENGINE RUNS ALL WITH NSDR UALA2010122004640Flex Duct · brokenAPU SHUTDOWN AT GATE (2ND TIME). APU INOP, OK TO DEFER IAW MEL. NOTIFIED OPB & DD. APU STARTED NORMALLY. ALL APU PARAMETERS STABILIZED OK WITH HIGH LOADS IMPOSED FOR 20 MIN. NO APU SHUTDOWN OCCURED. FLEXIBLE DUCT FOUND BROKEN. REPLACED DUCT AND APU START SDR ASOA201001937Apu · odorON DESCENT, TRIED TO START APU BUT NO LIGHT OFF OCURRED, ON SECOND TRY APU STARTED BUT A STRONG ODOR OF JET FUEL FILLED THE CABIN AND WE SHUTDOWN THE APU. INTERROGATED APU ECU AND FOUND NO DISCREPANCIES AND NO FUEL LEAKS, OPS CK GOOD AT THIS TIME IAW AMM 49-3SDR UALA2010120104422Plug · overtorquedFOUND APU GEARBOX DRAIN PLUG OVER TORQUED. DRAIN PLUG DAMAGED NEEDS TO BE REPLACED. APU WAS DRAINED OF OIL AND PLUG WAS TEMPORARILY INSTALLED TO FILL HOLE WHERE PLUG GOES. TALKED WITH APU CONTROLLER ABOUT PLUG. PLUG IS HELD IN WITH SAFETY WIRE TO KEEP IN POSISDR HALA2010111700543Apu · malfunctionedETOPS SIGNIFICANT SYSTEM, APU FAULT ON START. T/S PER FIM 49-11-00 FIG 103. BITE CHECKED, NO FAULTS NO MIMI FLAGS. STARTED APU WITH NO FAULTS, OK FOR SERVICE.SDR HALA2010111600542Unknown · unknownETOPS SIGNIFICANT SYS - APU FAULT. PERFORMED FIM 49-11-00, FIG 103. BITE CHECKED APU ECU NO FAULTS NOTED. NO MINI FLAGS. STARTED APU 1ST ATTEMPTED SUCCESSFUL NO DEFECTS NOTED. OK FOR SERVICE.SDR C2XA10RI136Shunt · burnedFLIGHT 2586 - EWR - FLIGHT CREW REPORTED STRONG ELECTRICAL SMELL IN AIRCRAFT ON TAXI IN. IT WAS FOUND THAT THE BURNING SMELL WAS COMING FROM APU. EWR MX REMOVES AND REPLACED APU SHUNT AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPPROVED TO RETURSDR ASAA1058505Apu · failedAIRCRAFT SMELLS LIKE DIRTY SOCKS ON APPROACH. FOUND EVIDENCE OF OIL IN APU BLEED AIR DUCT. REPLACED APU PER TASK CARD 78349010. LEAK & OPS CHECK GOOD. NO DIRTY SOCK ODOR NOTED.SDR UALA2010110804151Apu · faultyFOUND APU CONTROL MSG ON. MESSAGE STARTED HITTING AFTER SUCCESSFUL ALT START (19 OCT) AFTER APU INSTALLED. APUC REPLACED ON 20OCT, NR 2 SPEED SENSOR 24OCT & 29OCT & FINALLY NR 1 SPEED SENSOR 03NOV. CHECK MAT TO ENSURE LAST LATCHED STATUS MESSAGE WAS ERASED. PSDR C2XA10IA272Starter Gen · inoperativeRDU - FLIGHT 2178, DURING TAXI THE CREW REPORTED THAT THE APU GENERATOR DROPPED OFF LINE WITH AN ELECTRICAL ODOR IN THE COCKPIT. THE AIRCRAFT RETURNED TO THE GATE WHERE MAINTENANCE INSPECTED THE AIRCRAFT, CHECKED THE ELECTRICAL WIRING, WITH NO DEFECTS NOTED. SDR UALA2010102003883Controller · faultyAPU CONTROL APUC DETECTED FAILURE OF REDUNDANT CONTROL FUNCTION OR LOSS OF 1 629 CHANNEL. STATUS MSG-4911970 INACTV ER MODE. REPLACED APUC, GROUND CHECK NORMAL.SDR ASAA1058411Unknown · malfunctionedAFTER STARTING THE APU AND PLACED THE BUSSES ON THE APU THE APU SHREDDED THE BUSSES AND LEFT A FAULT LIGHT. ACCOMPLISHED FIM TASK 49 90 00 810 809 PGS 1 2 STEP A THRU F1(H)1. CDU DISPLAYS NO FAULTS.SDR QXEA2010101800645Unknown · odorWITH APU BLEED SELECTED ON STRONG ODOR FROM BLEEDS IN THE AFT GALLEY, WITH BLEED SELECTED OFF ODOR DISIPATES. C/W HS NR49-0006 PRIOR TO STARTING APU. STARTED APU IAW AMM TASK 49-00-00-869-801. APU OPS CKS NORMAL. NO ODOR FROM BLEED & NO OTHER DEFECTS NOTED. RESDR HALA2010092600433Warning Message · illuminatedETOPS SIGNIFICANT SYS - APU ISLN VAL STATUS MESSAGE. PERFORMED FIM 28-25-00/101 FIC 104 BLOCK 1 - BLOCK 21. SYS OK FOR SERVICE.SDR UALA2010092003497Battery · overheatedSMELL OF SMOKE IN CABIN. FOUND SOURCE OF SMELL AND SMOKE AS APU BATTERY VERY HOT AND ODOR THE SAME AS WHAT WAS IN CABIN AREA JUST ABOVE THE E6 RACK. REPLACED APU BATTERY AND APU CHARGER PRECAUTIONARY. ALSO, REPLACED K116 RELAY PRECAUTIONARY. OPS CHECK NORMSDR UALA2010091003355Charger · faultyAPU WILL NOT START. REPLACED APU BATTERY, NO HELP. APU WILL NOT START ELECTRICALLY OR PNEUMATICALLY, APU FAULT LIGHT STAYS ON WITH APU STATUS MESSAGE. APU BATT DROPPED TO 7VOLTS WITH 173 AMP DISCHARGE, NO RPM INDICATED WITH EITHER ELEC OR PNEU START. REPLACEDSDR MYWA100094RWarning Light · illuminatedETOPS SIGNIFICANT SYS: INFLIGHT APU FAULT LIGHT ON WITH APU AUTO SHUTDOWN.SDR UALA2010081202950Apu · odorNEW APU RAN FOR 2 HRS WITH PACKS ON AND NOW THE ACFT HAS AN OIL ODOR IN THE CABIN. APU WILL BE DISASSEMBLED TO FIND SOURCE. APU SURGE VALVE REMOVED & DUCT CHECKED FOR CONTAMINATION, NONE FOUND, GROUND SERVICE AIR CONNECTIONS ALL CHECKED. NO CONTAMINATION. RESDR UALA2010072102613Apu · odorTAXI CREW REPORTS HEAVY- BAD OIL SMELL COMING FROM THE PACKS WHILE OPERATING ON THE APU. APU WORK RECORDS HAVE BEEN REVIEWED BY SHOP INSPECTOR AND THE DISCREPANCY NOTED HERE HAS BEEN CORRECTED. THE SIGN-OFF OF THE ELR WAS INADVERTANTLY MISSED WHEN THE APU WASSDR UALA2010071902588Charger · faultyAPU BATTERY WILL NOT CHARGE. BATTERY CHARGER NOT OPERATIVE. REPLACED APU BATTERY CHARGER PER MM. OPS CK OKAY.SDR UALA2010062102186Apu · failedFIRST APU START ATTEMPT APU AUTO SHUTDOWN AT NEAR FULL RPM. LARGE CLOUD ON START THAT SMELLS LIKE OIL. APU LIT-UP AND THEN AUTO SHUTDOWN AFTER 1 TO 2 MINUTES. OPENED APU COMPT AND DID NOT FIND ANY LEAKING COMPONENTS AT THIS TIME. BIT APU ECU FOUND "LOW OIL PSDR UALA2010061002028Charger · malfunctionedAPU BATTERY CHARGER STATUS MSG FOUND ON PRE-DEPARTURE CHECK. MAINT CONFIRM APU BATT CHGR IS NOT OVERHEATING. ITEM DEFERRED FOR BASE ACTION. APU BATT READING ONLY 24V. REPLACED APU BATTERY AND APU BATTERY CHARGER.SDR USAA2010052491030Apu · odorFLT 920 - BURNING ODOR FROM AIR ON SYSTEM SUGGESTING CONTAMINATION OF WATER SEPARATOR OR BURNED OIL. FOUND APU TO BE THE CAUSE. REMOVED AND REPLACED APU IAW JOBCARD 26L31049001. OPERATIONAL CHECK WAS GOOD.SDR ASOA201000704Apu · leakingSMOKE IN COCKPIT & CABIN DURING FLIGHT. AUXILIARY POWER UNIT APU -INTAKE DOOR DEACTIVATED CLOSED. REMOVED AND REPLACED IAW AMM 49-10-00 COMPLIED WITH OPERATIONAL TEST IAWW AMM 49-10-00 OPS TEST GOOD AT THIS TIME PLACARD REMOVED PLACARD CLEARED.SDR HNAA2010050600135Apu · leakingKEROSENE/ OIL SMELL IN CABIN AT AFT SECTION OF CABIN. R & R APU IAW WORK CARD 49-20-02X. OPS AND LEAKED CHECKED GOOD. NO OIL OR FUEL SMELL IN APU BLEED AIR.SDR MYWA100050Housing · damagedETOPS SIGNIFICANT ITEM - APU EDUCTOR HOUSING AT LOWER POSITION HAS A HOLE.SDR UALA2010041201233Battery · reads lowAPU BATTERY LOW VOLTAGE MSG DISPLAYED. BATTERY FOUND DEFECTIVE. REPLACED APU BATTERY. OPS ARE NORMAL.SDR UALA2010040101093Apu · inoperativeUNABLE TO START APU, RTFL. APU ALTITUDE NO START. APU ROTATES BUT NO EGT INDICATIONS DURING START. VERIFIED APU OIL IN SERVICE BAND AT SIGHT GAUGE. BITE CHECK FAULTS "HOT OIL TEMP". FOUND METAL ON GEARBOX CHIP DETECTOR. CLEANED DETECTOR. RAN APU AND GOT MORE SDR UALA2010022200661Apu · inoperative2 APU START ATTEMPTS NO START WITH APU FAULT LIGHT. BITE CHECKED THE ECU. HAVE AUTOSHUTDOWN. NO COMPONENT FAULT. WILL NOT START. REPLACED APU. REPLACED APU BATTERY CHARGER PER SERVICE TIP DUE TO APU NO START AND PNEUMATIC FLUCTUATIONS. OP CHECKS GOOD FOSDR UALA2010021500580Controller · faultyON PREFLIGHT CHECK FOUND APU CONTROLLER FAULT. REPLACED APU CONTROLLER, ACP OP CHKS, NO DEFECTS. STATUS MSG CLEARED.SDR UALA2010021500582Apu · failedAPU FAILED TWICE AT GATE. REMOVED AND REPLACED APU. OPS CHECKED APU AND ACCOMPLISHED PERFORMANCE TEST.SDR HALA2010021000061Apu · shutdownETOPS SIGNIFICANT SYS - AFTER PUSHBACK AND BEFORE START, APU SHUTDOWN. DID ONE RESTART AND IT RAN NORMALLY DURING START UP. BITE CHK APU IAW FIM 49-11-00/101. CLEARED FAULT IAW FIM. RESTARTED APU OPS CHECKED IS GOOD. NO FAULTS NOTED.SDR A6WA201040086Apu · fumesPRIOR TO T/O, APU AUTO SHUTDOWN DUE TO DEICING. APU RESTARTED PACKED NORMALLY. CABIN FILLED MIST. CLEARED WITHOUT ANY ACTION. CLEANED APU ENCLOSURE AND CONTAMINATION DUCTING IAW SUPPLEMENT 09-37A NO ODORS OR MIST NOTICE.SDR UALA2010012500307Battery · faultyAPU WILL NOT START. HANGS AT 40 PERCENT THEN SHUTS DOWN WITH FAULT LT 777 EGT. REPLACED APU BATTERY AND APU DOOR ACTUATOR IAW MM, OPS CHECKED GOOD.SDR USAA2010011190060Apu · leakingFLT 89 - CABIN ODOR - ACFT HAS A STRONG DIRTY SOCK ODOR. FOUND APU LEAKING. MAINTENANCE REMOVED AND REPLACED THE APU.SDR GLBA201001051Apu · smokeAFTER STARTING NR1 ENGINE, ACFT FILLED WITH SMOKE AND SET OFF SMOKE DETECTOR. ACFT WAS SHUTDOWN AND ALL PAX EVACUATED. MAINTENANCE RAN A/C WITH BLEEDS IN ALL DIFFERENT CONFIGURATIONS AND FOUND NO SMOKE. INSPECTED NR 2 ENGINE & THE APU FOR OIL LEAKS. NO LEAKSSDR DL76L100026Apu · failedAPU DOOR STATUS MESSAGE DISPLAYED AFTER APU SHUTDOWN ON GROUND. FWD TO MCO AND PLACARD IAW MEL M49-11-01B. APU AIR INTAKE DOOR CLOSED MANUALLY. APU RENDERED INOP T/S IAW FIM 49-11-00-10 FIG 104 - APU OP NORMAL- MCO/PLACARD REMOVED. ETOPS CATEGORY 'E': PROBSDR DL76G092028Apu · failedAPU FAILED ON PUSHBACK WITH A FAULT LIGHT ILLUMAINATED. AFTER SYS RESET TEST PERFORMED WITH PNEUMATIC LOAD APPLIED. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS.SDR UALA2009121503883Module · faultedAPU HAD SHUTDOWN, FAULT LGT ILLUM AND EICAS MSG. APU FAULT DISPLAYED. APU INOP. FOUND DELTA P AND P2 SENSOR FAULTS ON ECU. REPLACED FLOW SENSE MODULE AND RAN APU FOR 20 MINUTES. OPS CHECK OK.SDR FDKA2009120400205Valve · malfunctionedFRL FLT 6136 CVG-CLT. STRONG FUEL SMELL IN AIRCRAFT (COCKPIT AND CABIN) WITH APU ON. MX REMOVED AND REPLACED ANTI-SURGE VALVE, OPS CHECK GOOD.SDR HALA2009120300561Apu · malfunctionedETOPS SIGNIFICANT SYS - APU FAULT EICAS MSG. AFTER LANDING. PERFORMED APU ECU BITE PROCEDURE. ECU FAULTS REVERSE FLOW. FAULT NOT ASSOCIATED WITH START. FOUND APU COLD SOAKED. APU START NORMAL ON FIRST ATTEMPT. APU BITE C/W IAW FIM 49-11-00.SDR UALA2009112503664Controller · poppedAPU ELEC STANDBY CIRCUIT BREAKER POPPED, RTFL. REPLACED THE NR 4 ENG HIGH PRESSURE CONTROLLER, NR 4 ENG PRESSURE REGULATING VALVE AND REPLACED THE NR 4 ENG PRESSURE REGULATING VALVE CONTROLLER. ALSO, CHK'D THE SECURITY OF THE BLEED LINES. ALL CHECKS ARE GOOSDR HALA2009102100475Apu · malfunctionedETOPS SIGNIFICANT SYSTEM - APU FAULT LT AFTER LDG AUTO SHUT DOWN TWICE. SECONDTRY APU TEMP 707 DEGREES. ACCOMPLISHED APU BITE. NO FAULTS NOTED PER FIM 49-11-00 FIG 103. CONFERRED WITH MOC AND APU ENGINEER. STARTED APU - ALL INDICATIONS NORMAL. OK FOR SERVSDR HALA2009101700467Gcu · unknownETOPS SIGNIFICANT SYSTEM - APU AUTO SHUTDOWN AT GATE (PANEL LIGHTS FLICKER HIGH/LOW) FIRE BELL SOUNDED IN TAIL - NO FIRE HANDLE LIGHTS ILLUMINATED. REPLACED K421 RELAY PER FIM 49-11-00 AND WDM 49-61-11. REMOVED AND REPLACED APU GCU PER AMM 24-22-00 DUE TO APSDR IPXA09557774Structure · corrodedINSPECTION TYPE:C2 TAIL COMPARTMENT, APU INLET DOOR FWD MOUNT STRUCTURE HAS CORROSION. REPAIRED PER ATS ENGINEERING REPAIR NR 09-5025 DATED 12OCT09.SDR HALA200909150407Charger · failedETOPS SIGNIFICANT SYSTEMS - APU AUTO SHUTDOWN FRM 49111600. REMOVED AND REPLACED APU MAIN BATTERY PER AMM 24-31-04. REMOVED AND REPLACED APU BATTERY CHARGER PER AMM 24-31-05. OPS CHECK OK. NO FAULT NOTED. APU STARTED ON FIRST ATTEMPT.SDR UALA2009081802528Battery · faultyAPU WILL NOT START. FOUND APU BATT AT 20V AND WOULD NOT START. REPLACED APU BATTERY, NO HELP. REPLACED APU CONTROL UNIT, APU STARTS NORMAL.
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