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 ASMF20161216009Contactor · failedDURING TRANSIT CHECK, THE TRANSFER BUSS OFF LIGHT TURNED ON WITH APU AND EXTERNAL POWER. MAINTENANCE PERSONNEL PERFORMED BITE TO GCU AND BPCU IAW FIM 24-41 TASK 801 PROCEDURE, DETECTING THAT TRANSFER BAR DID NOT FEED ELECTRIC CURRENT DUE TO THE LEFT GENERATOR SDR AALA201709289025Apu · odorAIRCRAFT WAS GROUNDED. DURING TAXI AND CLIMB A MODERATE DIRTY SOCK ODOR WAS REPORTED. REMOVED AND REPLACED THE APU IAW AMM 49-94-11.SDR ASAA2016102318466Module · faultedWHILE ACCOMPLISHING TSR908214, FOUND APU BITE CURRENT STATUS WITH FAULT MESSAGES 49-72101 DATA MEMORY MODULE POWER SHOWS HIGH CURRENT AND 49-72103 DATA MEMORY MODULE SHOWS CIRCUIT FAILURE. GROUNDED - YES. REMOVED AND REPLACED APU DMM PER B737-800 AMM 49-72-11.SDR ASAA2016102218449Warning Light · false activationAPU FAULT LIGHT ILLUMINATED, FAULT CODE: 49-11019. ACFT GROUNDED. FAULT CODE 49-11019 DC POWER LOSS SHUTDOWN POWER INTERRUPTED. POWERED APU ON THEN NORMAL SHUTDOWN. CHECKED CDU APU "CURRENT STATUS" NO FAULTS FOUND. A/C OK FOR SERVICE IAW FIM 49-10 TASK 801.SDR A6WA201644449Apu · failedDURING FIRST FLIGHT OF THE DAY CHECKS CREW REPORTED AN APU AUTO SHUTDOWN, APU OIL TEMP CAUTION AND APU FAULT CAUTION MESSAGE ON ED1. STRONG OIL ODOR THROUGH PACK AND IN AFT EQUIPMENT BAY.SDR HNAA2016101900321Apu · odorBURNED OIL ODOR IN CABIN AND FLIGHT DECK WHEN USING APU BLEEDS. GROUND RAN AIRCRAFT AND CONFIRMED OIL IN APU BLEEDS. GOES AWAY WITH ENGINE BLEEDS.SDR UIEA2016101500809Warning Message · false activationAPU FAULT EICAS MESSAGE DURING START, & AFTER LANDING. PERFORMED APU ECU BITE IAW FIM 49-11 FT 958 RESET ECU EICAS MESSAGE CLEARED APU START NORMAL.SDR QXEA2016101000649Apu · smokeSMOKE APPEARS TO BE COMING FROM THE APU DRAIN PORT.SDR GTIA2016100601629Diverter · failedDURING WALKAROUND, FO NOTICED DAMAGE TO APU DOOR AIR INLET ASSEMBLY. INSTALLED NEW APU DIVERTER IAW AMM 49-16-41 OPS CHECKED GOOD.SDR UIEA2016100500801Eec · malfunctionedAPU SHUTDOWN. REMOVED AND REPLACED APU ECU IAW AMM 49-61-05. OPS CHECKED NORMAL.SDR ASAA2016090117911Warning Light · false activationBLUE APU MAINTENANCE LIGHT ILLUMINATED. ACFT GROUNDED. INTERROGATED CDU. NO RECENT FAULTS OR HISTORY. CHECKED APU OIL QTY LEVEL. OIL LEVEL AT FULL. ACCOMPLISHED RESTART APU. NO MAINT LIGHT OR FURTHER FAULTS NOTED. APU START SUCCESSFUL IAW AMM 49-90-00-007.SDR HNAA2016082900261Apu · failedAPU FAILED. GENERATOR OVERHEAT CAUTION LIGHT ILLUMINATED. APU MAIN CIRCUIT BREAKER TRIPPED, AND CHECK FIRE DETECTION WARNING LIGHT ILLUMINATED. CREW DISCHARGED BOTTLE. MX PREFORMED HIDDEN DAMAGE INSPECTION AND FOUND NO OBVIOUS DAMAGE COLLARED CB Q8 APU MAINSDR GTIA2016082701579Apu · odorFUMES REPORTED BY AFT F/A'S. PERFORMED IDENTIFICATION OF THE CAUSE OF CABIN ODOR IAW TSM 05-50-00-810-8311-A. APU SUSPECTED TO BE AT FAULT. PERFORMED ECS CLEANING IAW AMM 21-00-00-615-004-A. NO MORE ODOR IN AIRCRAFT.SDR QXEA2016082100542Apu · odorRUBBER ODOR COMING FROM THE APU WITH THE BLEEDS ON.SDR QXEA2016082100541Unknown · odorRUBBER ODOR COMING FROM THE APU WITH THE BLEEDS SELECTED ON. THE ODOR WENT AWAY WITH THE ENGINES ON. NO FAULTS FOUND IN CDS SYSTEM. RAN APU WITH BLEEDS ON FOR 20 MINUTES WITH NO ODOR DETECTED. COULD NOT DUPLICATE. RETURNED TO SERVICE.SDR HALA2016080900324Warning Message · false activationAPU BATTERY NO STANDBY STATUS MESSAGE ILLUMINATED. RESET APU STANDBY POWER SWITCH, CHECKED GOOD, MESSAGE CLEARED, OK FOR SERVICE.SDR ASAA2016080317604Unknown · malfunctioned1ST ATTEMPT CSS AT 33,000, TEMP -39 DEGREES. APU FAILED TO START, FAULT LIGHT ILLUMINATED, WENT OUT AT 3 MINUTES LATER. 2ND ATTEMPT AT 33,000, STARTED, GOOD VOLTS, FREQUENCIES. ACFT GROUNDED. CURRENT STATUS HAD NO FAULTS, FAULT HISTORY AND MAINTENANCE HISTOSDR HALA2016072300296Sensor · malfunctionedAPU VERIFICATION FLIGHT FAILED APU FAULT. RETURNED TO DEPARTURE. PERFORMED BITE CHECK ON ECU. FAULTED OVER SPEED FLAG. REMOVED AND REPLACED INLET PRESSURE (P2) SENSOR IAW AMM 49-61-04. INSP SENSE LINE AND NOTHING OBVIOUS FOUND. OPS CHECKED GOODSDR HALA2016072300295Apu · faultedAPU FAULTED DURING FLIGHT, FL 300 PRIOR TO ETOPS AIRSPACE. APU VERIFICATION FAILED. REMOVED AND REPLACED THE APU IAW TC. OPS AND LEAK CHECK OK.SDR ASAA2016072117474Warning Light · false activationBLUE APU LIGHT ON. ACFT GROUNDED. MAINTENANCE MESSAGE 49-91227 INDICATED. ACCOMPLISHED FIM 49-90 TASK 804. NO CURRENT FAULTS NOTED. GROUND VERIFICATION SUCCESSFUL.SDR ASAA2016070517279Warning Light · illuminatedATTEMPTED APU START, NO START, FAULT CODE 49-41012, "NO APU ROTATION SHUTDOWN". ACFT GROUNDED. PERFORMED IAW FIM TASK 49-40 TASK 803, A THRU E. NO HISTORY 30 DAYS, CURRENT STATUS SHOWS NO FAULTS. STARTED APU AND LOAD TESTED. OPERATION NORMAL.SDR ASAA2016063017236Thermocouple · failedON ENGINE START N2 DID NOT INCREASE ABOVE 18 - 20 % NR 2 THAN NR 1 ENGINE. ACFT GROUNDED. REPLACED NR 1 AND 2 EGT THERMOCOUPLE IAW AMM 49-71-21. OPS CHECKED OK.SDR IPXA2016062605055Inlet · contaminatedPASSING 10,000 FT, FOUL ODOR SEEMED TO GET STRONGER. REMAINED AT THE STRONG LEVEL FOR REMAINDER OF FLIGHT. DURING INITIAL INVESTIGATION OF ODOR, RAN ENGINES THEN APU, SOURCE ODOR ATTRIBUTED TO BUG ACCUMULATION AT APU INLET SCREEN. REMOVED BUGS FROM APU SCRESDR DALA2016052504224Apu · smokePERFORMED ATB DUE TO REPORTED SMOKE IN CABIN ON CLIMB OUT. AN EMERGENCY WAS DECLARED. MAINTENANCE REPLACED THE APU AND PERFORMED PACK SYSTEM INSPECTION/CLEANING. A VERIFICATION FLIGHT WAS ACCOMPLISHED AND THE ACFT WAS RETURNED TO SERVICE.SDR AALA20160602004Apu · leakingREPORTS OILY ODOR WHEN APU STARTED AT GATE. ACCOMPLISHED CARD 21-96-01 & FOUND APU OIL LEAK. REMOVED AND REPLACED AUXILIARY POWER UNIT IAW MCM 49-96-83. OPERATIONAL CHECKED GOOD. AIRCRAFT WAS GROUNDED.SDR ASAA2016052416843Apu · malfunctionedAPU FAILED TO START FL360, FL300 WITH FAULT LIGHT. ACFT GROUNDED. INTERROGATED APU FAULTS, CURRENT FAULTS: NONE. FAULT HISTORY SHOWS LAST 2 LEGS FAULT MESSAGE 49-31016, OVER TEMPERATURE SHUTDOWN. PERFORMED FIM 49-30, TASK 803, STEP A1A. PERFORMED APU GROUNDSDR ASAA2016051516782Warning Light · false activationTHE MAINTENANCE LIGHT ON APU ILLUMINATED AFTER STARTING THE APU DURING TAXI IN. ACFT GROUNDED. DID BITE CHECK OF APU IAW 49-60, TASK 801, GOT MESSAGE 49-11019, ACCOMPLISHED FIM TASK 49-10, TASK 801, DID 2 RESTARTS, NO MAINT LIGHT OR DEFECTS NOTED, RE DID BSDR ASAA2016051416781Warning Message · activatedFAULT 49-52183 - IGV ACTUATOR LVDT SHOWS CIRCUIT FAILURE ON CDU. ACFT GROUNDED. ON DEFERRAL.SDR ASAA2016051416780Apu · unknownLOST GROUND POWER AT THE GATE TOOK 2 ATTEMPTS TO START APU. ACFT GROUNDED. ACCOMPLISHED APU BITE CHECK IAW AMM 49-61-00-700-801. NO CURRENT FAULTS LISTED.SDR ASAA2016050416623Warning Light · false activationON APU STARTUP, FAULT, LIGHT ILLUMINATED. ACFT GROUNDED. REBOOTED ACFT POWER IAW AMM 24-30-00. OPS NORMAL.SDR HALA2016040400028Not Reported · not reportedAPU COLD SOAK START FAILED TO START AFTER 3 ATTEMPTS AT FL 410, OAT -60. PERFORMED FCMS INPUT PARAMETER FROM PAGES 1-11 AND APU SHUTOFF VALVE AND OPERATION TEST AMM 28-29- AND FIM 49-61-00-810-836. OPS CHECKS OK.SDR ASAA2016030915847Warning Light · false activationAPU BLUE MAINTENANCE LIGHT ILLUMINATED ON APU START AFTER LANDING. ACFT GROUNDED. ACCOMPLISHED APU BITE, OIL LEVEL FULL, NO FAULTS NOTED, NO FAULTS IN HISTORY. OPERATED APU, GENERATORS, AND AIR CONDITIONING. APU OPS NORMAL. BLUE MAINTENANCE LIGHT IS A NUISANSDR CA160303002Apu · smoke(CAN) PRIOR TO DEPARTURE, WITH ALL PASSENGERS AND CREW ON BOARD, THE APU WAS STARTED IT STARTED EMITTING SMOKE. RAMP CREW ADVISED THE FLIGHT DECK AND THE APU WAS SHUTDOWN. AFTER APU SHUTDOWN, NO MORE SMOKE WAS OBSERVED. ARFF ATTENDED THE SCENE AND A 1D WAS DSDR ASAA2016022915700Apu · malfunctionedIN CLIMB, DISCOVERED APU RUNNING WITH APU START SWITCH OFF. CYCLED APU SWITCH TO ON THEN OFF. APU SHUTDOWN NORMALLY. STARTED APU IN FLIGHT, NORMAL START GOOD. ACFT GROUNDED. RESET POWER FOR ACFT. VERIFIED APU SWITCH CONTACTS ARE SECURED. VERIFIED SWITCH SDR P5CA2016022900061Valve · not reportedIAW CUSTOMER REQUEST NEED TO REPLACE APU SURGE CONTROL VALVE AFTER T/S. REPLACED APU SURGE CONTROL VALVE, PERFORMED OPS TEST OF APU WITH LOAD. LT AND RT PACK FOR 60 MIN. NO PRESSURE DROP APPEARED IAW AMM 49-53-01.SDR DXTA2016021206183Apu · smokeAFTER RUNNING THE APU ON THE GND FOR 7 TO 8 MINUTES, THE CABIN BEGAN TO FILL WITH SMOKE. WE WERE UNABLE TO DETERMINE THE SOURCE OF THE SMOKE. R & R APU WITH AN APU REPAIRED BY MFG. OPERATIONS & LEAK CHECK SATISFACTORY. ALL WORK IAW MM CH 49-11-00. APU CURSDR ASAA2016012915190Apu · unknownAPU HAS HISTORY OF CSS FAILED ON FIRST ATTEMPT. ACFT GROUNDED. ACCOMPLISHED APU BITE TEST. ACCOMPLISHED FIM TASK 49-40, TASK 801.SDR ASAA2016012414985Apu · inoperativeAPU INOPERATIVE. ACFT GROUNDED. RAN APU SEVERAL TIMES LOADED APU AND MONITORED APU OPERATION, GROUND FUNCTIONAL CHECKS NORMAL. ACFT APU FAULT HISTORY ADDED AS FOLLOWS: 49-41012, 49-31016, & 49-41010. MAINTENANCE HISTORY WAS 49-52284.SDR DALA2016012600641Apu · smokeFUME WITH THE APU JUST BEING PLACED ON MEL FOR NO START AFTER 3 ATTEMPTS, ONCE START CART WAS HOOKED UP, SMOKE AND FUMES FILLED THE CABIN. MAINTENANCE FOUND THE APU BATTERY TO BE THE SOURCE OF SMOKE, SMELL. REPLACED IAW AMM 24-31. CLEARED APU MEL.SDR DXTA2016011106164Apu · contaminatedSHORTLY AFTER STARTING THE APU, ACFT CABIN FILLS WITH NOXIOUS FUMES OF AN OILY NATURE. REMOVED CONTAMINATED APU & INSTALLED A REPAIRED APU. OPS & LEAK CHECKED GOOD. WORK DONE IAW MM 49-10-01-900-802, 53-71-01-900-801, 24-33-01-900-801 & AND MM 49-24-14.SDR DXTA2016011106163Apu · smokeWHEN STARTING APU AFTER LANDING, LINE SERVICE OBSERVED WHITE SMOKE, A FLAME COMING OUT OF THE EXHAUST & FUEL LEAKING FROM APU. THE CABIN ALSO HAD AN EXTREMELY STRONG ODOR OF JET FUEL. R & R APU FUEL FLOW DIVIDERIAW MM 49-30-58. LEAK & OPERATIONS CHECKED GOSDR AALA201512319001Apu · odorCABIN ODOR IN ENTIRE CABIN FROM ENG START FOR ENTIRE LEG. VERY STRONG IN FLIGHT & DESCENT, RESULTED IN THE CREW EXPERIENCING HEADACHES & EYE IRRITATION. AIRCRAFT WAS GROUNDED. THE CAUSE WAS THE APU. MAINTENANCE REPLACED APU IAW TC 26L31049005 AND ACCOMPLISDR ASAA2015122914552Apu · faultedFAULT LIGHT ON APU ATTEMPTED START IAW QRH FAULT LIGHT EXITING. LESS THAN 5 MINUTES ATTEMPTED ANOTHER START, ANOTHER NO START, WITH FAULT LIGHT. ACFT GROUNDED. PERFORMED FIM APU BITE CHECK, IAW MM 49-60-801. FAULT CODE 49-41011 DISPLAYED NO FLAME SHUTDOWN, SDR DXTA2015122906144Apu · odorUPON ARRIVING AT THE AIRPORT, NOTICED A MUSTY & OILY ODOR IN THE CABIN & COCKPIT. THIS SMELL PERSISTED & BECAME STRONGER WITH APU USAGE & WHILE INFLIGHT. UPON LANDING WE BOTH FELT A BURNING SENSATION IN BOTH OUR EYES. THE OILY ODOR IS MUCH STRONGER IN THE CSDR ASAA2015121914330Apu · failedWHILE OPERATING LT PACK ON APU AIR SOURCE, FLIGHT CREW OBSERVED 2 DUCT PRESSURE SURGES, GROUND CREW ALSO REPORTED THE SOUND OF THE APU EXHAUST SURGE. ACFT GROUNDED. R & R THE APU IAW TASK CARD 78349010. APU OPS CHECK PASS, NO SURGE.SDR ASAA2015121514281Warning Light · false activationMAINTENANCE LIGHT FOR APU ILLUMINATED DURING TAXI. ACFT GROUNDED. CHECKED CDU FOUND FAULT 49-11019, DC POWER LOSS SHUTDOWN POWER INTERRUPT. RAN APU ON GROUND. MAINTENANCE LIGHT REMAINS OUT.SDR UHLA201512040831Control Unit · smokeSMOKE IN CABIN. AGCU KEEPS BURNING IN RICC. DECLARED EMERGENCY, RETURNED TO GATE. R & R AGCU IAW AMM 24-22-03.SDR P5CA2015112300178Tru · failedAPU TRU INOPERATIVE. REPLACED WITH NEW APU TRU IAW AMM 24-32-04 AND OPS CHECK OK IAW AMM 24-32-00/001.SDR HALA2015110505035Apu · malfunctionedRETURNED TO DEPARTURE DUE TO APU T/R SHOWING 304A DURING CRUISE. REPLACED APU T/R.SDR ASAA2015110513678Warning Light · illuminatedAPU FAULT LIGHT CAME ON DURING START. ACFT GROUNDED. ON DEFERRAL.
Back to JASC 4900