JASC 4970
Service difficulty reports · 272
Reports filed under 4970 · APU Indicating 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 = '4970' 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 = '4970' 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 UIEA201805290974Sensor · looseAPU INOPERATIVE. REMOVED AND REPLACED THE FLOW SENSING MODULE IAW AMM 49-53-08. OPS CHECKED OK. PERFORMED ECU BITE, TESTED OK. REPLACED SURGE VALVE, NO HELP IAW AMM 49-53-01. TIGHTENED THE APU INLET TEMP SENSOR IAW AMM 49-6103&, OPS CHECKED OK.SDR ASAA2018052224741Warning System · false activationAPU AUTO SHUT DOWN ECAM DURING APU START GROUNDED - YES. OPS CHECKED APU AMM 49-40-00 OKAY. CLEARED FOR SERVICESDR AALA20180406006Sensor · faultedAPU INOPERATIVE. EMERGENCY DECLARED LANDED WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS GROUNDED. RAN APU FOUND NO CURRENT FAULTS IN BITE HISTORY, FOUND FAULT 49-61259. FOLLOWED FIM 49-60-0-810-817. R & R THE SPEED SENSOR IAW AMM 49-61-21. OPS CHECKED GOSDR UIEA2018031900428Warning System · false activationUPON LANDING APU FAULTED TWICE AFTER START ATTEMPTS APU FAULT EICAS. PERFORMED APU BITE NO FAULTS NOTED, RAN APU NO FAULTS DETECTED REF AMM 49-05-00.SDR ASAA2018031423871Thermocouple · defectiveAPU EGT TRENDING HIGHER THAN NORMAL. GROUNDED - YES. ENGINEERING REQUEST - REMOVED AND REPLACED APU EGT THERMOCOUPLES 1 & 2 PER AMM 49-71-21. COMPLETED INSTALLATION TEST FOR EGT THERMOCOUPLES 1 AND 2. TEST GOOD PER AMM 49-71-21.THIS COMPLETES STEPS FOR TSR.SDR ASAA2018022723686Warning System · false activationAPU FAULT ILLUMINATED, RAN QRH, TRIED RESTART, NO HELP. DURING START ON GROUND. GROUNDED - YES. PERFORMED APU BITE TEST PER FIM 49-60 TASK 801. NO CURRENT FAULTS NOTED. RAN AND OPERATED APU PER AMM 49-11-00-860-801. NO FAULTS NOTED. OPS CHECK NORMAL WITH AND WSDR ASAA2018020923483Module · malfunctionedWHILE PERFORMING AN OPS CHECK, HEARD SURGING SOUND COMING FROM THE APU EVERY 30 SECONDS. ACCOMPANIED WITH FAULT CODE 49-72105. ACFT GROUNDED. SURGING OCCURRED ONLY WITH BLEED AIR ON AND PACKS ON. DURING SURGE DELTA PRESSURE RAISED FROM 6.7 TO 19 AND TOTAL SDR ASAA2018020223396Warning System · false activationAPU MAINT LIGHT ILLUMINATED AT GATE. GROUNDED - YES. INTERMITTENT FAULT, RESTARTED APU. APU MAINT LIGHT TURNED OFF. OK BACK TO SERVICE.SDR HALA2018012300008Warning System · false activationETOPS SIGNIFICANT SYSTEM - APU FAULT EICAS QRH PROCEDURE COMPLETED. SUCCESSFUL START ON 2ND ATTEMPT. NO FAULTS NOTED. OPS CHECK GOOD. VISUAL OIL LEVEL CHECK GOOD. NOTIFIED MOC AND NO PRIOR HISTORY. AIRCRAFT OK FOR SVC.SDR ASAA2018012223246Warning System · false activationAPU MAINT LIGHT CAME ON AT GATE. GROUNDED - YES. BITE SHOWS FAULT 49-91227, LOW OIL QTY. SHUTDOWN APU, VERIFIED OIL LEVEL IS FULL. DETERMINED TO BE INTERMITTENT FAULT. STARTED APU, MAINT LIGHT IS OFF.SDR ASAA2017112622683Thermocouple · malfunctionedAPU CT5ATP EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE MAINTENANCE THRESHOLD OF 593 WITH A HIGH OF 606 DEGREES RECORDED. ACFT GROUNDED. REMOVED AND REPLACED APU EGT THERMOCOUPLES IAW AMM 49-71-21-000-801 AND AMM 49-71-21-400-801. OPS CHECKED GOOD. REMOVEDSDR ASAA2017111222526Warning System · false activationAFTER APU START "MAINT" BLUE LIGHT ILLUMINATED. GROUNDED - YES. SHUTDOWN APU. ACCOMPLISHED APU BITE CHECK PER FIM 49-60 TASK 801. FAULT READ LOW OIL QUANTITY. VISUALLY CONFIRMED AT APU OIL SIGHT GAUGE THAT OIL LEVEL IS FULL. PERFORMED APU BITE CHECK AGAIN - OISDR ASAA2017110922527Warning System · false activationUPON APU START UP RECEIVED A BLUE MAINT LIGHT. GROUNDED - YES. VERIFY BLUE MAINT LIGHT WAS ON, SHUT DOWN APU AND THEN I STARTED APU AGAIN AND RAN IT FOR 5 MIN AND BLUE MAINT LIGHT WENT OFF. PERFORMED BITE CHECK AND OIL LEVEL WAS FULL. GROUND VERIFICATION CHECKSDR ASAA2017110522463Apu · malfunctionedMAINT LIGHT ON APU. GROUNDED. CYCLED AIRCRAFT POWER AND PERFORMED AN APU BITE IAW FIM 49-60/801. CURRENT STATUS SHOWS NO FAULTS. FAULT HISTORY SHOWS FAULT 49-72104 ON RECENT LEGS. APU STARTS NORMAL IAW AMM 49-11-00/201. THE DMM OPS CHECKED GOOD IAW AMM 49-7SDR ASAA2017102322296Sensor · failedAPU HAS PREVIOUS REPORTS OF FAULT LIGHT AND FAULT MESSAGE 49-61223. INLET TEMP SENSOR SHOWS SHORT CIRCUIT. ACFT GROUNDED. REMOVED AND REPLACED APU INLET TEMP SENSOR IAW AMM 49-61-31. RAN APU AND PERFORMED INSTALLATION TEST AND APU BITE PROCEDURE IAW AMM 49SDR UIEA2017080701429Warning System · false activation"APU FAULT" EICAS MESSAGE ON FIRST START ATTEMPT AFTER LANDING. SECOND ATTEMPT WAS SUCCESSFUL, PERFORMED FIM 49-11 FT 987 NO FAULTS FOUND. SYSTEM TEST OK. OPS CHECKED APU NORMAL 05 GOOD STARTS & SYSTEM NORMAL IAW AMM 49-11-00.SDR ASAA2017052120847Warning System · false activationFAULT LIGHT ILLUMINATED DURING APU START. FOLLOWED QRH. AFTER 5 MIN RE-ATTEMPTED START AND LIGHT ILLUMINATED AGAIN. GROUNDED - YES. APU LAST FLIGHT LEG FAULT HISTORY SHOWS FAULT LIGHT MAINTENANCE MESSAGE 49-61157, ECU INTERNAL FAILURE. PERFORMED APU BITE PER FSDR UIEA2017051000765Thermocouple · failedMAINTENANCE MESSAGE FOR APU BITE. PERFORMED A BITE CHECK, AND ECU FAULTED, EGT FAULTED, EGT NR 2 CIRCUIT. R & R THE NR 2 EGT UPPER THERMOCOUPLE IAW 49-71-01. BITE CHECK PASSED, CIRCUIT BREAKER CHECKED NORMAL.SDR ASAA2017042020508Module · faultyFDR REASONABILITY REPORTS APU ANY FAULT DETECTED DISCRETE PARAMETER SHOWS 'FAULT' GROUNDED - YES. ACCOMPLISHED TSR818449 - NO FAULTS FOUND. RMVD AND INSTALLED NEW DATA MEMORY MODULE REF AMM 49-72-11. PERFORMED SYS OPS TEST REF AMM 49-72-11-400-801. SYS CKS NMLSDR ASAA2017031620217Thermocouple · failedENGINEERING REQUESTS THE FOLLOWING TROUBLESHOOTING FOR CT5ATP FLUCTUATION. GROUNDED - YES. ACCOMPLISHED APU BITE CHECK, NO FAULTS NOTED, REF AMM 49-61-00-700-801. ACCOMPLISHED APU BLEED AIR LEAK CHECK, NO FAULTS NOTED, REF AMM 49-11-00-860-801. REMOVED AND REPSDR ASAA2017022119898Thermocouple · failedAPU EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE MAINTENANCE THRESHOLD OF 593 BUT LESS THAN 605 DEGREES. ACFT GROUNDED. REMOVED & REPLACED BOTH APU THERMOCOUPLES IAW AMM 49-71-21. OPS NORMAL, NO FAULTS FOUND.SDR AMCR20161130004Actuator · out of adjustWHILE TROUBLESHOOTING AN INTERMITTENT READY LIGHT FOR THE APU INLET DOOR, IT WAS OBSERVED THAT WHEN THE DOOR ACTUATOR RETRACTED, THE SURROUNDING STRUCTURE FLEXED. AFTER ACTUATOR REPLACEMENT, THE REMOVED ONE WAS FOUND TO BE 3/16" TOO SHORT PER THE MAINTENANCE MSDR UIEA2016090700749Warning Message · faultyECS/MSG PAGE MAINTENANCE MSG, APU BITE, WILL NOT CLEAR. PERFORMED APU CONTROL UNIT BITE TEST. TEST OK IAW AMM TASK 49-60-05-742-045. MAINTENANCE MSG, APU BITE, CLEARED.SDR ASAA2016080517626Sensor · faultyAMBER FAULT LIGHT ILLUMINATES WHEN APU IS SHUTDOWN. LIGHT EXTINGUISHES AFTER 2 MINUTES. ACFT GROUNDED. FOUND CURRENT FAULT 49-61223 FOR LAST 4 STARTS. REPLACED INLET TEMP SENSOR REF FIM TASK 49-60-812 & AMM 49-61-31. OPS CK GOOD. NO CURRENT FAULTS. THISSDR ASAA2016072617542Warning System · false activationAPU FAULT LIGHT CAME ON AFTER APU START. FAULT LIGHT WENT OUT AND APU RESTART HAD FAULT LIGHT ON AGAIN. ACFT GROUNDED. PERFORMED SEVERAL STARTS OF APU, WAS UNABLE TO REPLICATE FAULT, REF FIM TASK 49-40-00. OPS CHECK GOOD.SDR UIEA2016072200620Warning System · false activation2 STARTS ON APU BOTH RESULTED IN APU FAULT, CLEARED, APU START NORMAL. PERFORMED APU BITE PROCEDURES IAW FIM 49-11, FT 958 FAULTS CLEARED. APU START NORMAL.SDR ASAA2016071117345Warning System · false activationAPU FAULT LIGHT ILLUMINATED DURING START ATTEMPT FL 380. ACFT GROUNDED. NOTED APU MAINT. MESSAGE 49-41010. NORMAL APU GROUND START ACCOMPLISHED. NO NEW FAULTS.SDR ASAA2016061717067Warning System · false activationDURING AFTER START CHECK, BLUE APU MAINTENANCE LIGHT ILLUMINATED. APU OPERATION WAS NORMAL. ACFT GROUNDED. WHEN ENTERING FLIGHT DECK FOUND MAINTENANCE LIGHT OFF AND APU OFF. ACCOMPLISHED BITE CHECK WITH NO FAULTS. APU OIL LEVEL IS FULL. PERFORMED APU STASDR ASAA2016061517052Warning System · false activationAPU MAINTENANCE LIGHT ILLUMINATED WITH APU START. ACFT GROUNDED. IAW FIM TASK 49-90, TASK 804, RESTARTED APU WITH NO CURRENT FAULTS STATUS. SUSPECT INTERMITTENT FAULT.SDR CALA2016042200244Warning System · false activationAPU SHUTDOWN IN FLIGHT DUE TO AMBER LOW OIL PRESS LIGHT. TROUBLE SHOT IAW FIM 49-90-10. BITE SHOWS FAULT 49-91007. CHECKED APU OIL AT CDU, SHOWS FULL. PHYSICALLY CHECKED APU OIL SIGHT GLASS, JUST ABOVE ADD. ADDED OIL IAW AMM 12-13-31. INSPECTED MAG CHIP,SDR DXTA2016042106227Contactor · unserviceableAFTER STARTING THE ENGS WE GOT AN APU FAULT CAS MSG. SHUTDOWN THE APU THEN THE ESS BUS TURNED AMBER ON THE ELEC SYNOPTIC. SHUTDOWN ENGS & POWERED DOWN ACFT. FOUND ESS BUS 7 1/2 CB POPPED ON THE J BOX ABOVE THE NR 1 BATTERY. ALSO NOTED ELEC SMELL IN FWD SERSDR P5CA2016032200071Transmitter · inoperativeAPU OIL QTY INOPERATIVE. REPLACED TRANSMITTER IAW AMM 49-94-04, OPS NORMAL.SDR ASAA2015100913434Module · failedAPU BLUE MAINT LIGHT. ACFT GROUNDED. PERFORMED APU BITE. FOUND FAULT 49-72103 AND 49-72104 IN CURRENT STATUS. PERFORMED FIM 49-70, TASK 806. NO WIRING DEFECTS FOUND. R & R APU DATA MEMORY MODULE IAW AMM 49-72-11. OPS CHECLED GOOD. NO CURRENT FAULTS AFTER SDR ASAA2015092413209Module · failedWHILE ACCOMPLISHING T/C 78249000, FOUND CDU'S APU MSG 49-72103, DMM SHOWS CIRCUIT FAILURE, ON CURRENT STATUS PAGE. ACFT GROUNDED. REPLACED APU DATA MEMORY MODULE IAW AMM 49-72-11.SDR UIEA2015082000455Warning System · false activationAPU FAULT EICAS. PERFORMED BITE ON ECU, NO FAULTS INDICATED. OPERATIONS CHECKED GOOD IAW AMM 49-11-01 PAGE 501.SDR UIEA2015061400309Warning System · false activationAPU FAULT EICAS MSG ON GND ON FIRST START ATTEMPT AFTER LANDING. PERFORMED APU BITE CHECK & STARTED APU, NO FAULTS FOUND IAW MM 49-61-05-742.SDR A6WA201542311Apu · malfunctionedAT 17,000 FT, RECEIVED APU FAULT CAUTION MSG, APU SHUTDOWN. MC IDG 1 WAS ON MEL AT THE TIME OF ISSUE.SDR ASAA2014112509735Sensor · unknownAPU CTSATP TREND DATA SHOWS MES EGT IS AT OR NEAR THE ESTABLISHED THRESHOLD. ACFT GROUNDED. ACCOMPLISHED ALL STEPS OF TSR. REPLACED APU INLET TEMP SENSOR (T2) IAW AMM 49-61-31. INSPECTED INLET PRESSURE SENSOR (P2) IAW AMM 49-52-31. OPS NORMAL.SDR ASAA2014102009442Warning Light · false activationDURING TAXI, BLUE MAINTENANCE LIGHT CAME ON FOR APU. ACFT GROUNDED. TROUBLESHOOT APU AND FOUND NO BLUE MAINTENANCE LIGHT ON. STARTED APU AND CHECKED OIL. OPS CHECKED GOOD.SDR ASAA2014100709326Data Unit · failedAPU FAULT 49-7210. ACFT GROUNDED. FOUND BAD DATA MEMORY AND CHANGED IAW MM 49-72-11. FAULT CLEARED. SYSTEM GROUND VERIFICATION ACCOMPLISHED IAW APU BITE MM 49-61-00.SDR ASAA2014072208616Sensor · malfunctionedENGINEERING REPORTS APU CT5ATP TEMPERATURE IS APPROACHING ESTABLISHED THRESHOLD. ACFT GROUNDED. REPLACED INLET TEMPERATURE SENSOR IAW AMM 49-61-31-000-801 AND 49-61031-400-801, GROUND FUNCTIONAL TEST GOOD AMM 49-61-31-400-801, PARA G.SDR ASAA2014051207788Sensor · failedAPU FAULT LIGHT CAME ON. WITHIN 5 MINUTES FAULT LIGHT WENT OUT. SHUTDOWN APU. ACFT GROUNDED. VERIFIED INLET TEMP SENSOR BAD, READS 300 OHMS PIN TO GROUND, IAW FIM TASK 49-60, TASK 812. REPLACED INLET TEMP SENSOR IAW AMM 49-61-31-000-801 AND 49-61-31-400-801SDR CALA2014051391009Status Message · false activationAPU START SYS STATUS MSG ON START UP. RESTARTED APU, MSG GONE.SDR UIEA2014042900159Warning System · false indicationAPU FUEL VLV EICAS MSG, NO MSG AT THIS TIME, CREW REPORT 2ND ATTEMPT NORMAL. PERFORMED BITE IAW FIM 49-11 958 IAW FIM 28-25 805, APU START NORMAL IAW AMM 49-11-00, NO FAULT FOUND ON BITE CHECK.SDR SIMA20140406005Warning System · activatedAPU FAIL MSG AFTER APU WAS RUNNING. STRONG ODOR OF FUEL AFTER APU STARTED. DEFERRED IAW MEL 49-1 & COMPLIED WITH MX PROCEDURE. EXAMINED THE FUEL LINE & CONNECTION FOR LEAKS, PERFORM OPERATION CHECK ON APU. OPERATIONS CHECKED GOOD, NO LEAKS IAW AMM 49-13-00SDR CALA2014032090653Unknown · malfunctionedNO EGT INDICATION ON APU START. CYCLED CB'S L41 & L42. ACCOMPLISHED NORMAL APU START WITH EGT, NORMAL, INDICATION.SDR UIEA2014031100101Thermocouple · faultyEICAS MX MSG, APU BITE, LRU FAULTED NR 2 EGT CIRCUIT. PERFORMED APU BITE IAW 49-11 FAULT TREE 958 MINI FLAG 12, FAULTED LRU NR 2 EGT CIRCUIT. R & R RT SIDE THERMOCOUPLES POSITION TS7 UPPER & TS7 LOWER IAW AMM 49-71-01-401. SN OFF UPPER 1115027701662, SN ON SDR CALA2014030790555Warning System · activatedECAM MESSAGE APU AUTO SHUTDOWN DISPLAYED ON UPPER ECAM SCREEN, APU.SDR CALA2014013190271Warning System · activatedECAM MESSAGE APU AUTO SHUTDOWN DISPLAYED ON UPPER ECAM SCREEN, APU. CYCLED CB'S L41 & L42. TRIED SECOND START ATTEMPT, APU DID NOT START. NO FLAME AT START ATTEMPT. LISTEN FOR CLICKING SOUND. IF CLICKING HEARD SUSPECT FUEL, IF NO CLICKING HEARD CHECK IGNSDR CALA2013121393670Warning Message · false activationAPU BLEED AIR STATUS MSG. FOUND MSG 49-11180, APU SURGE CONTROL VLV NOT IN COMMAND POSITION. BLEED VLV IS WORKING THROUGH SCHEMATIC, OPERATING BOTH AIR CONDITION PACK & MOTORING BOTH ENGS AS NORMAL. APU BLEED AIR CONSIDER A NUISANCE MSG & BLEED VLV IS VERIF
Back to JASC 4970