JASC 4930
Service difficulty reports · 1,087
Reports filed under 4930 · APU Engine Fuel and Control, 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 = '4930' 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 = '4930' 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 ASAA2012102893212Manifold · inoperativeAPU FAULT LIGHT ILLUMINATED DURING IN-FLIGHT START. EXTINGUISHED AFTER 5 MINUTES. SECOND ATTEMPT SUCCESSFUL. R & R PRIMARY FUEL MANIFOLD IAW MM 49-31-16, LEAK CHECKED GOOD. R & R INLET TEMP SENSOR IAW MM 49-61-31. APU OPS CHECKED GOOD.SDR ASAA2012102593196Flow Divider · failedCSS FAILED WITH FAULT LIGHT AND AUTO SHUTDOWN AT FL 360. FAULT LIGHT EXTINGUISHED W/IN 5 MINUTES IAW START ATTEMPT. R & R FUEL FLOW DIVIDER AND SOLENOID VALVE REF AMM 49-31-15. OPS CHECK NORMAL.SDR UIEA2012102100487Actuator · failedAPU WOULD NOT START AT GATE "APU FUEL VALVE" EICAS MESSAGE. R & R APU FUEL VALVE ACTUATOR. LEAK & OPS CHECKED. REF AMM 28-25-02/401.SDR CA121022009B-Nut · loose(CAN) THE RECENTLY DELIVERED FREIGHTER SUFFERED AN APU AUTO SHUTDOWN FOLLOWED BY ABORTED RE-START. TROUBLESHOOTING LED TO THE DISCOVERY OF A FUEL LEAK IN THE APU COMPARTMENT CAUSED BY LOOSE B-NUTS ON THE APU FLOW DIVIDER/DUMP VALVE. TIGHTENING THE CONNECTIONSSDR ASAA2012090792850Switch · malfunctionedAPU DID NOT SHUTDOWN ON GROUND AFTER APU SWITCH MOVED TO OFF POSITION. APU SWITCH WAS MOVED SLIGHTLY TOWARDS THE ON POSITION AND THE APU SHUTDOWN. PERFORMED APU STARTING AND OPERATION, USUAL SHUTDOWN OPS CHECKED GOOD, INPUT MONITORING AND START SWITCH POSTIONSDR DALA12006400855O-Ring · damagedFLIGHT CREW NOTED FUEL FUMES IN AIRCRAFT AFTER STARTING AND RUNNING THE APU. ON INSPECTION, MAINTENANCE REPLACED THE O-RING AT THE ATOMIZER B-NUT AND PERFORMED A PNEUMATIC DUCT BURNOUT. AIRCRAFT IS NOW OKAY FOR SERVICE.SDR SWIA201231685Fuel Control · defectiveTHE APU AUTO SHUTDOWN AND SMOKE CAME OUT OF THE INLET WITH HIGH SMELL OF FUEL. (FLT 4762) REPLACED FUEL CONTROL UNIT AND FUEL SOLENIOD IAW AMM.SDR UALA2012090404926Fmu · leakingAPU FMU REQUIRES REPLACEMENT FOR TROUBLESHOOTING OF OIL LEAK. REPLACED APU FMU. ACCOMPLISHED ECU BITE FOUND AUTO SHUTDOWN LOP MSGS. DURING LEAK CHECKS FOUND FMU ATTACHMENT FLANGE CASTING LEAKING UNDER PRESSURE FROM HAIRLINE CRACK. UNABLE TO LOCATE IN IPC ESDR ASAA2012091592895Fuel Control · malfunctionedFAULT LIGHT DURING INFLIGHT APU START. PERFORMED APU BITE CHECK, REF AMM 49-61-00. FOUND APU FAULTS FAULT HISTORY - FAULT 49-41010. NO ACCELERATION SHUTDOWN WITH 5 FLIGHT OCCURRENCES. FOUND APU FAULT -MX HISTORY - FAULT 49-31171, FUEL CONTROL UNIT FLOW DISSDR ASAA2012091192879Flow Divider · failedAPU WILL NOT START. APU FAULT MESSAGE PRESENT 49-31171 AND 49-41010. PERFORMED APU NORMAL START, APU STARTED WITH NO FAULT LIGHT. RAN APU FOR 10MINS, NO DEFECT NOTED. R & R FUEL FLOW DIVIDER AND SOLENOID IAW AMM 49-31-15. OPS CHECKED GOOD.SDR SWIA201231641O-Ring · damagedSTRONG FUEL SMELL AFTER STARTING THE APU. FOUND FUEL LEAKING ONTO THE RAMP. (FLT 5651) REPLACED O-RING ON OUTLET SIDE OF APU FUEL SHUTOFF SOLENOID VALVE IAW AMM.SDR UALA2012082204698O-Ring · leakingFUEL LEAKING AT APU HST FUEL SHROUD APPROX 25 DROPS PER SECOND. NEED TO REPLACE APU FUEL LINE. REMOVED APU FUEL LINE FROM STN 1648 THRU STN 2030 PER MM. REMOVED APU FUEL LINE FROM BODY STA 1265.0 TO 1648.0 PER MM. REPLACED O-RINGS ON FUEL SHROUD DETAIL B ASDR UALA2012081604568Control Unit · faultyAPU RUN LIGHT ON WITH APU NOT ON AND THEN FAULT LT WHEN RUN LT OUT. REPLACED APU CONTROL UNIT. STARTED APU, BUT AUTO SHUTDOWN AT 95 PERCENT. APUC RECORDED "LOW OIL PRESS".SDR UALA2012081504531Fcu · faultyIN FLIGHT START OF APU ATTEMPTED. 8000FT 250KTS AUTO SHUTDOWN AT 20 PERCENT N1. APU CB'S COLLARED PER MEL. REPLACED APU FCU PER MM, OPERATED APU SEVERAL TIMES OK. NO LEAKS. LEADS CHECK OK. REMOVED AND REPLACED IGN BOX. OK FOR SERVICE IAW AMM.SDR ASAA2012081192693Fuel Control · malfunctionedCREW REPORTED VIA ACARS MSG THAT APU WOULD NOT START AND FAULT LIGHT ILLUMINATED AT 33,000. APU STARTED ON 3RD ATTEMPT. ACFT GROUNDED. APU BITE SHOWS NO CURRENT FAULTS & MSG 49-41010 (NO ACCELERATION) FOR THE PREVIOUS 2 FAILED STARTS. (COLD SOAKED). APU BITSDR ASAA2012070292462Fuel Control · failedCSS FAILED WITH FAULT LIGHT. ACFT GROUNDED. MAINT HISTORY SHOWS 31 FAULTS-MOST RECENT FAULT 49-91227 LOW OIL QTY-158 STARTS OLD. INSURED P2 SENSOR AND FITTING IN PLEUM IS NOT BLOCKED. REF AMM 49-52-31, R & R APU FUEL CONTROL UNIT IAW AMM 49-31-11.SDR ASAA2012071792555Warning Light · false activationRECEIVED A FAULT LIGHT DURING IN-FLIGHT APU START. STARTED APU & RAN 5 MINUTES, VOLTS & FREQS NORMAL. FAULT CODE 49-31016 OVER TEMP SHUTDOWN CLEARED IAW FIM TASK 49-30-803, TASK OPS GOOD.SDR USAA2012070200001B-Nut · leakingFLIGHT 2143, BOS-LGA - OIL SCENT IN COCKPIT AND PAX CABIN ON TAKEOFF WHICH DISAPATED BY 10,000 FT ON CLIMB. MAINTENANCE FOUND APU FUEL SUPPLY LINE LEAKING FUEL AT B-NUT. ALSO FOUND HYDRAULIC FLUID LEAKING AT NR 2 PUMP. REPLACED O-RING, NO LEAK DETECTED AT TSDR CA120628009Line · cracked(CAN) APU HAD HIGH ITT ON START, HIGH ITT WHEN AIR CONDITIONING PACK AIR DEMAND APPLIED AND APU AUTO SHUTDOWN. REMOVED APU AND FOUND THE COMPRESSOR DISCHARGE SENSE LINE, PN 3884967-1 TO THE VARIABLE GUIDE VANE ACTUATOR, PN 126842-2-1, BROKEN AT THE B-NUT FLAISDR SWIA201231103Rail · defectiveWITH APU RUNNING, CABIN SMELLED LIKE GAS FUMES WHICH DISSIPATED AFTER APU WAS SHUTDOWN. (FLT 4742) REPLACED APU SECONDARY FUEL RAIL.SDR SWIA201230974Solenoid Valve · defectiveVERY STRONG FUEL SMELL WITH APU RUNNING AC AND BOTH PACKS ON. (FLT 4478) REPLACED APU FUEL SHUTOFF SOLENOID VALVE IN REFERENCE TO AMM.SDR SWIA201230906Manifold · defectiveAPU EXHAUST HAD FIRE COMING OUT AND FUEL STARTED TO LEAK FROM DRAINS ON BOTTOM OF AIRCRAFT. (FLT 5300) REPLACED PRIMARY FUEL MANIFOLD, SECONDARY FUEL MANIFOLD, AND NR 2 SECONDARY FUEL NOZZLE GASKET IAW CMM.SDR ASAA2012062792437Fcu · malfunctionedSTARTED APU AFTER LANDING AND ESTABLISHED APU GENERATOR ON LINE. AFTER ARRIVING AT GATE THE APU BLEED VALVE WOULD NOT OPEN. GROUND POWER WAS HOOKED UP AND PUT ON ACFT. SWITCHED BACK TO APU GENERATOR AND IT WOULD NOT STAY ON LINE. ACFT GROUNDED. PERFORMED SDR REXA2012052200769Fuel Line · looseSTRONG FUEL SMELL IN CABIN. FOUND LOOSE FITTING ON APU FUEL LINE. TIGHTENED FITTING AND LEAK CHECK, NO FURTHER DEFECTS NOTED IAW AMM 49-10-00. FUEL SMELL IS NON EXISTENT IN CABIN OR CARGO AREA. ALSO REPLACED LEFT AND RIGHT COALESCER BAGS IAW AMM 21-51-13, SDR CA120522004Fuel · leaking(CAN) THE PILOT WAS TRYING TO START THE APU AT THE GATE. AFTER A FEW ATTEMPTS DUE TO THE APU DOOR AUTO CLOSING, THE CREW MANAGED TO GET THE APU TO LIGHT OFF. A FLAME SHOT OUT THE APU INTAKE AND THE CREW DISCHARGED THE APU FIRE BOTTLE. THE FIRE DEPARTMENT WASDR SWIA201230759Solenoid Valve · faultyFLAMES CAME OUT OF APU INTAKE. (FLT 6303) REPLACED FUEL SOLENOID VALVE IAW AMM.SDR ASAA12511495Nozzle · failedAPU CT5ATP EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE ESTABLISHED THRESHOLD. ACFT GROUNDED. REMOVED ALL FUEL NOZZLES IAW MM 49-31-14, STEPS A, E. INSTALLED FUEL NOZZLES IAW MM 49-31-14, STEPS A, F. ACCOMPLISHED STEPS G AND H MM 49-31-14-400, LEAK CK GOOSDR MASA2012042634734Fuel Line · leakingOIL BURNING SMELL IN COCKPIT. FOUND AND SECURED LEAKING FUEL LINE IN APU ENCLOSURE. SMELL DISSIPATED.SDR VNAA2012041700010Switch · defectiveCREW REPORTED APU SOV OPEN STATUS MESSAGE IN FLIGHT AFTER APU SHUTDOWN. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT APU, REMOVED AND REPLACED APU POWER FUEL PUSHBUTTON SWITCH AND PERFORMED CHECKS USING AIRCRAFT MAINTENANCE MANSDR CHQA20120415124Fuel Control · leakingCREW REPORTED THAT UPON APU START AND ACTIVATION OF PACK 1, A STRONG FUEL ODOR ENTERED THE COCKPIT. THE PACK SYSTEM WAS DEFERRED. THE DEFERRAL WAS CLEARED ON 4/15/2012 BY REPLACING THE APU FUEL CONTROL. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NSDR ASAA12511378Nozzle · malfunctionedAPU EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE ESTABLISHED THRESHOLD. REMOVED AND REPLACED APU FUEL NOZZLES REF AMM 49-31-14-400. LEAK & AND OPS CHECKED GOOD.SDR WX0A071149Fuel Control · malfunctionedFLIGHT CREW PERSONNEL REPORTED SMOKE / FUMES IN CABIN AS SOON AS APU AIR STARTED ON GROUND. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE APU FUEL CONTROL UNIT IAW AMM 49-30-01, OPS AND LEAK CHECK GOOD IAW AMM 49-00-00. AIRCRAFT RETURNED TO SERVICE.SDR UALA2012032201843Isolation Valve · faultyEICAS MESSAGE APU FUEL ISOLATION VALVE MESSAGE. DEFERRED IAW MEL 2825C APU ISO VALVE DEACTIVATED CLOSED AND DISCONNECTED, CB PULLED AND CAPPED ON P310 PANEL. INSTALLED NEW ISO-VALVE, OPS GOOD, MESSAGE GONE.SDR ASAA12511271Fcu · defectiveAPU INDICATES ZERO FREQS & 1 VOLT AT CRUISE (POST CP). PER FIM 49 30 00 810 805 C/W FCU RESOLVER CIRCUIT FAULT ISOLATION: CONNECTOR P22 PINS 10 TO 12 CONTINUITY READS OPEN (SHOULD READ 30 200 OHMS) FUEL CONTROL UNIT REPLACEMENT REQ'D. REMOVED AND REPLACED ASDR ASAA12511193Fuel Nozzle · defectiveAPU CT5ATP EGT DATA SHOWS EGT IS TRENDING TOWARDS ESTABLISHED THRESHOLD. REPLACED ALL 10 APU FUEL NOZZLES AND SHROUDS PER MM 49 31 14. LEAK CHECK GOOD. NOTE: 1EA FUEL SHROUD DID HAVE A BURN HOLE IN IT.SDR VNAA2012030200014Packing · leakingCREW REPORTED STRONG SMELL OF OIL COMING FROM PACKS AND APU EXHAUST. MAINTENANCE CLEANED AND INSPECTED APU AREA AND FOUND FUEL LEAK. MAINTENANCE REMOVED AND REPLACED PACKING AT FUEL SOLENOID ELBOW ON APU FUEL CONTROL AND PERFORMED CHECKS USING AIRCRAFT MAINSDR ASAA12511117Fuel Nozzle · failedAPU CT5ATP EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE ESTABLISHED THRESHOLD. REMOVED AND REPLACED TEN FUEL NOZZLES AND SHROUDS REF MM 49-31-14. OPS AND LEAK CHECKED GOOD.SDR UALA2012021400888Ecu · faultyAPU SURGES WITH SINGLE PACK OPERATION. ECU BITE INDICATES ECU FAULT. REPLACED ECU IAW MM. OPERATED BOTH PACKS ONE AT A TIME AND TOGETHER WITH NO SURGES.SDR SWIA201229397Manifold · crackedSTRONG ODOR SIMILAR TO GASOLINE OR BURNING OIL WHEN APU IS BLED. (FLT 6205) FOUND PRIMARY FUEL MANIFOLD CRACKED AND LEAKING. REPLACED PRIMARY FUEL MANIFOLD.SDR UALA2012011600337Controller · faultyAPU SHUT DOWN AT GATE APU STATUS MSG. APU CONTROLLER REPLACED.SDR SIMA2012016005Solenoid Valve · inoperativeFOR FLIGHT 3017 THE CREW REPORTED THAT DURING APU START ATTEMPT APU ROTATION STOPS AT 29% EICAS MESSAGE "APU FAIL" PRESENTED. SMOKE REPORTED BY GROUND CREW COMING FROM APU. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED FUEL SOLENOID VALVE IAW CSDR ASAA12510902Unknown · unknownAFTER LANDING APU GEN READ 0 VOLTS/0 FREQ WOULD NOT GO ON LINE WITH APU OFF BUS LIGHT ILLUMINATED. ACCOMPLISHED APU BITE TEST REF FIM TASK 49 60 TASK 801 FOUND FAULT CODE 49 31171 LOGGED. REF FIM TASK 49 31 00 810 808 ACCOMPLISHED APU STARTING OPERATIONAL CHSDR USAA2012010300038Gasket · missingFLIGHT ATTENDANT REPORTED A DIRTY SOCK SMELL THROUGHOUT CABIN ON APPROACH TO LANDING. APU WAS OFF AND BOTH PACKS WERE ON. SMELL WAS WORSE FROM MID TO REAR OF CABIN. NO SMELL IN FLIGHT DECK. MAINTENANCE ACCOMPLISHED J/C 03L00021001 - 737 T/S CABIN ODOR. FOSDR UALA2011122707104Valve · malfunctionedAPU FUEL VALVE STATUS MSG. RESET APU VALVE ACTUATOR, EICAS APU FUEL VALVE INDICATION NORMAL.SDR ASAA11510860Drain Mast · crackedAPUR SHROUD AND HYD DRAIN MAST AFT OF LT W/W APPEARS CRACKED AT THE BASE ON THE T/E. VERFIED CRACK USING HFEC 2.0 IN ON OTBD SIDE AND 3.0 IN ON INBD SIDE PER BOEING NDT MANUAL 51 00 00 FIG 23 PART 6. REPLACED APU FUEL FEED LINE SHROUD DRAIN MAST REF MM 25 25SDR USAA2011122700019Fcu · leakingCREW REPORTED A DIRTY SOCK SMELL THROUGHOUT AIRCRAFT UPON BOARDING AND DID NOT FEEL IT ALLOWED FOR PASSENGER BOARDING. MAINTENANCE REMOVED AND REPLACED APU FUEL CONTROL UNIT IAW AIRBUS MAINTENANCE MANUAL 49-32-11-401.SDR CA111223005Manifold · cracked(CAN) FUEL DISCOVERED LEAKING FROM APU DRAIN MAST DURING DAILY CHECK. FOUND APU FUEL MANIFOLD CRACKED NEAR B NUT AT FUEL NOZZLE. DIGEST 737NG-FTD-49-05003, DESCRIBES THIS AS A KNOWN ISSUE WHICH IS UNDER INVESTIGATION. FUEL MANIFOLD REPLACED WITH NEW.SDR REXA201100988Sensor · leakingAPU LEAKING FUEL. REMOVED AND REPLACED APU FUEL SOV IAW AMM 49-31-05. NO FIX. DM 56373 REMAINS OPEN. OK FOR SERVICE. VERIFIED PART EFFECTIVITY. REMOVED AND REPLACED APU P3 SENSOR IAW AMM 49-51-03. THIS CLEARS DM 56373. OPS/CHECK GOOD LEAK CHECK GOOD.SDR REXA201100981O-Ring · defectiveAPU AUTO SHUTDOWN, OIL PRESS WARNING, FUEL LEAK. REMOVED AND REPLACED APU FCU O-RING IAW AMM49-31-01 CLEAR DM, OP CHECK GOOD.SDR UALA2011121906935Line · leakingAPU SHROUD LEAK ABOVE LIMITS. INSTALLED APU FUEL LINE FROM AFT PRESSURE BULKHEAD TO APU FIREWALL, NEW O-RINGS ON FUEL SHROUD. APU FUEL LINES AND SHROUD INSTALLED, OPS GOOD.
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