JASC 4920
Service difficulty reports · 2,431
Reports filed under 4920 · APU Core Engine, 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 = '4920' 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 = '4920' 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 UALA2011090704865Apu · oil consumptionAPU OIL QUANTITY EICAS ILLUMINATED ON TAXI IN. APU OIL CONSUMPTION ABOVE LIMIT. REPLACED APU. APU ALTITUDE START REQUIRED DUE TO APU REPLACEMENT. NEED APU ALTITUDE START DUE TO APU CHANGE. CREW VERIFIED APU START. THIS VERIFICATION FLIGHT CONFIRMS NORMALSDR USAA2011090900004Apu · leakingCREW REPORTED A DIRTY SOCK SMELL THROUGHOUT AIRCRAFT IN ALL FLIGHT PHASES. MAINTENANCE TROUBLESHOT TO INTERNAL APU LEAK. REMOVED AND REPLACED APU.SDR C2XA11CL199Unknown · malfunctionedTHE CREW REPORTED APU FAIL ON 1ST ATTEMPT WITH STRONG FUEL SMELL. MAINTENANCE INSPECTED AND PERFORMED OPERATIONAL CHECKS OF APU. NO DEFECTS WERE NOTED.SDR DXTA2011082904712Apu · leaking5 MINUTES AFTER ENGINE START, GRAY SMOKE BEGAN FILLING CABIN. APU HAD BEEN RUNNING FLAWLESSLY FOR 40 MINUTES. PERFORMED VISUAL INSP OF THE APU INLET, FOUND OIL RESIDUE IN THE APU INTAKE. REMOVE EXCHANGE NOZZLE, INLET AIR DUCT, CONNECTORS, FUEL AND DRAIN LINESDR UALA2011081804393Apu · smokeAT GATE IN SFO, APU WAS HASTILY SHUT DOWN WHEN MECH NOTICED HEAVY BLUE SMOKE COMING FROM THE EXHAUST. ACCOMPLISHED APU PERFORMANCE CHECK, OPERATION NORMAL. NO FAULTS.SDR UALA2011081904427Filter · dirtyAPU FAILED. APU FAILED AT DEP TIME. TROUBLE SHOT PER FAULT DISPLAY. ACCOMPLISHED BITE CHECK. FAULT DISPLAY SHOWED "GEN FILTER" FAULT. REPLACED GENERATOR SCAVENGE FILTER AND LUBE FILTER ASSY'S IAW MM. APU STARTS AND RUNS NORMAL.SDR USAA2011081700010Apu · failedCREW REPORTED THE APU FIRE LITE ILLUMINATED CLIMBING THROUGH 25,000 TO 26,000 FEET. CREW ACCOMPLISHED QRH PROCEDURE. EGT WAS IN THE RANGE ON A RUNNING APU BUT SWITCH TO APU WAS IN THE OFF POSITION FOR OVER 15 TO 20 MINUTES. APU FIRE LIGHT BEGAN TO GO OUT ANSDR UALA2011081604345Apu · making metalWHILE CHANGING APU GENERATOR, FOUND BOTH OIL FILTER DPI'S EXTENDED AND EXCESSIVE METAL CONTAMINATION ON CHIP DETECTOR. DRAINED MOST OF OIL FROM APU. REPLACED APU PER MM.SDR UALA2011081504318Switch · faultyAPU HAD SHUTDOWN, FAULT LIGHT ILLUM AND EICAS MSG. APU FAULT DISPLAYED. CREW COMMENTS: APU AUTO SHUTDOWN TWICE. ACP MEL 4911E. REPLACE AS PER AMM T-S 49-11-00 PAGE 150 FIGURE 112, DPI WAS NOT POPPED, REPLACED DELTA-P SWITCH AS PER MM, RAN APU, LOADED IT USDR ASAA11510239Apu · oil consumptionON CLIMBOUT NOTICED APU MAINT LIGHT ON. C/W APU BITE PROCEDURE PER AMM 49 60 00 810 801. FAULT CODE 49 91227 LOW OIL QUANTITY LOGGED. SERVICED 2 QTS OF OIL IN APU. REF 12 13 31 FAULT CLEARED FROM CURRENT STATUS APU OPS NORMAL. TSR ISSUED DUE TO HISTORY OF SDR USAA2011081600047Apu · faultyCREW REPORTED A DIRTY, MUSTY SMELL JUST AFTER TOP OF DESCENT. MAINTENANCE REMOVED AND REPLACED THE APU.SDR UALA2011081204249Controller · failedAT ENGINE SPIN UP, PNEUMATIC PRESS DROPPED OFF. ENGINE START ABORTED, APU DIED. ON GATE, NO MESSAGE ON CONTROLLER, CHIP DETECTORS CLEAN. APU STARTED, PNEU PRESSURE NORMAL, THEN SHUT OFF BY ITSELF, FOLLOWED BY APU SHUTDOWN. REPLACED APU CONTROLLER. REPLACED SSDR CALA2011081200535Apu · defectiveAPU FUEL LEAK INTERNALLY INSIDE APU ITEM PLACED ON PLACARD APU INOP NEEDS APU WHILE TROUBLESHOOTING FUEL SMELL DISCREPANCY ON L/P 8809346, IDENTIFIED APU AS SOURCE OF SMELL. REPLACED BURNER CAN ASSEMBLY WITH NO SUCCESS AND NOTICED RAW FUEL DRIPPING FROM CIRCUSDR SWIA201127205Apu · failedAPU FAILED AT GATE WITH FIRE THROUGH EXHAUST AND AUTO SHUTDOWN. (FLT 4808) REPLACED THE APU ASSEMBLY PER AMM. P/N ON 3800488-3, S/N OFF P-693.SDR UALA2011081004182Apu · malfunctionedBURNING SMELL IN AFT CABIN ON TAKEOFF AND LANDING. LAST 2 LEGS REPEAT WRITEUP. ACP HIGH POWER RUNS ISOLATING PACKS AND ENGINE BLEED SOURCES. TESTED LIGHTS AT ALL SETTINGS TESTED COFFEMAKERS, NO ABNORMAL SMELLS. FOUND OIL IN APU COMPARTMENT AND COMPRESSOR ISDR VNAA2011081100007Apu · failedCREW REPORTED AFTER ENGINE SHUTDOWN FUMES IN AIRCRAFT. THE APU WAS REPLACED. INSPECTION, REMOVAL, REPLACEMENTS, AND OPERATIONAL CHECKS WERE ACCOMPLISHED USING THE AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT WAS RELEASED FOR SERVICE.SDR UALA2011081004199Pressure Switch · faultyFOUND APU FAULT ON ARRIVAL, APU AUTOSHUTDOWN. APU WILL NOT START. FAULT LIGHT ON. FOUND FILTER SWITCH FAULT REPLACED GEN DIFFERENTIAL PRESSURE SWITCH PER MM, OPS CHECKED NORMAL.SDR UALA2011080304032Battery · failedAPU FAILED TO START. FAULT LGT ILLUM AND EICAS MSG. APU FAULT DISPLAYED. SECOND ATTEMPT INDICATES (SLOW ACCEL, HUNG START). CREW COMMENTS: APU FAULT AFTER LANDING. APU BAT VOLTS AT 15V. REPLACED APU BATTERY PER MM, GROUND CHECKED NORMAL.SDR AALA20110801TUL03Apu · failedMCI - INFLIGHT STL-LAX. CREW REPORTED AUXILIARY POWER UNIT FAILED WITH RIGHT GENERATOR ON PLACARD. EMERGENCY DECLARED FLIGHT DIVERTED MCI LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED AUXILIARY POWER UNIT. SYSTEM GROUND CHECK NORMAL OPESDR USAA2011072700004Apu · contaminatedCREW REPORTED A STRONG DIRTY SOCK ODOR IN CABIN ON DESCENT AND TAXI IN. MAINTENANCE REMOVED AND REPLACED THE APU.SDR USAA2011072200005Apu · leakingPILOT TURNED PACKS ON AND PUNGENT ODOR FILLED AIRCRAFT. MAINTENANCE FOUND APU TO BE THE SOURCE OF THE ODOR. REMOVED AND REPLACED THE APU.SDR HALA2011071900327Apu · shutdownETOPS SIGNIFICANT SYSTEM - APU AUTO SHUTDOWN REASON UNKNOWN PRIOR TO PUSH BACK. R & R APU IAW HAL M255-767,OPS CHECKED GOOD. NO FAULTS NOTED. BITE CHECKED GOOD.SDR ASAA11510147Apu · faultyON CLIMB AND DESCENT NOTICED A STRONG "DIRTY SOCK" SMELL IN THE COCKPIT. FOUND OIL IN APU LOAD COMPRESSOR DRAIN CAVITY. REPLACED APU PER TASK CARD 78349010. DURING OPS CHECK FOUND BLEED AIR DUCT LEAKING. REPLACED DUCT. LEAK CHECK GOOD & COMPLETED AMM REF SDR UALA2011071903685Apu · faultyEXCESSIVE SMOKE FROM APU EXHAUST AFTER ENGINE START. COMPLIED WITH MEL. APU INOP. CHK'D APU COMPARTMENT AND TAILPIPE FOR OIL WETTING, LEAKS, OR EVIDENCE OF BURNING, NONE FOUND. ATTEMPTED TWO STARTS AT GATE ON TURN: HUNG AT 27-29% N, TEMP 770-800 DEG BOTH TSDR UALA2011071703611Control Valve · faultyAPU AUTO SHUTDOWN ON PUSHBACK. REPLACED APU SURGE CONTROL VALVE PER MM. DRY MOTORED NR 1 ENGINE PER JRH, FOUND NO DEFECTS, APU MAINTAINED PNEUMATIC LOAD WITH NO AUTO SHUTDOWN.SDR UALA2011071503607Blade · damagedVIBRATION IN YOKE ON GROUND. WORST ON F-O SIDE. FOUND NO VIBRATION WITH APU OFF. VISUAL INSPECTION OF APU MOUNTS, STRUTS AND BRACKETS - NO OBVIOUS DEFECTS NOTED. DUCTS AND APU EXHAUST SECURE. RAN APU, NOTED NO LOOSE OR VIBRATING ITEMS. FOUND FOREIGN IMPSDR CA110711019Guide Vane · crackedTURBINE GUIDE VANE FOUND RUBBING ON TURBINE WHEEL. ALSO TURBINE GUIDE VANE FOUND SHIFTED. UNIT DISASSEMBLED AND FOUND AIR PLENUM CRACKED, COMBUSTION LINER CRACKED AND MISSING SECTIONS OF METAL.SDR HALA2011070700318Apu · shutdownETOPS SIGNIFICANT SYS - APU AUTO SHUTDOWN AND NO RESTART. BLED APU FUEL LINE. GRD OPS CHECK OK IAW AMM, 28-22-00.SDR UALA2011062703149Unknown · malfunctionedAPU FAULT DURING START. TRIED 3 TIMES. ECU SHOWS ONLY "START ABORTED" WITH NO UNIT FAILURES. LIKELY A PROBLEM WITH THE BATTERY OR BATTERY CHARGER. 2 OTHER APU STARTS AT GATE WERE NORMAL.SDR HALA2011061900268Warning Message · false activationAPU ISOLATION VALVE STATUS MESSAGE. PERFORMED FIM 28-25-00, FIG 104 NO FAULTS NOTED, OK FOR SERVICE.SDR ASAA1159872Apu · malfunctionedFLIGHT ATTENDANT REPORTED VERY STRONG "DIRTY SOCK" ODOR FROM 18000 TO LANDING (ON DESCENT INTO SEA). THE ODOR LASTED FOR 20 MINS. ENGINE ANTI ICE WAS USED AT 18000 FT FOR 5 MINS AND THEN TURNED OFF FOR REST OF THE FLIGHT. ACCOMPLISHED TASK 05 60 00 280 801CSDR ASAA1159818Turbine Blades · damagedAPU CT5 ATP EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE ESTABLISHED THRESHOLD. ACCOMPLISHED APU ENG INSP REF AMM TASK 49 21 00 200 801 FOUND DAMAGE TO 2ND STAGE TURB BLADES TRAILING EDGES. APPEARS TO BE ALL BLADES. REPLACED APU PER T/C 78349010. LEAK ANSDR DALA1138329860Inlet · contaminatedFLIGHT ATTENDANT REPORTED A BURNING SMELL AFTER TAKEOFF. RIGHT PACK IMMEDIATELY SECURED AND SMELL DISSIPATED. FOUND RIGHT PACK TEMPERATURE VALVE AT FULL HOT AND REPOSITIONED TO MID. RE-ACTIVATED RIGHT PACK AND SMELL RETURNED. HIGH PRESSURE BLEED VALVE SECSDR HALA2011052900232Ecu · malfunctionedETOPS SIGNIFICANT SYS - APU FAULT EICAS MSG LT CAME ON AFTER APU WAS "ON" & RUNNING FOR APPORX 3-5 MIN APU SHUTDOWN. SECOND START NORMAL. FOUND "GEN FILTER" FAULT. PERFORMED FIM 49-11-00, FIG 112 RESISTANCE CHECK & CONTINUITY CHECK OK. REPLACED ECU AMM 49-SDR HALA2011052600227Line · looseETOPS SIGNIFICANT SYS - APU BLEED AIR PRESSURE FLUCTUATES BETWEEN 5-10 PSI ON GROUND. PERFORMED BFIM 49-11-00, FIG 119 FOUND COMPRESSOR SENSE LINE AT MANIFOLD. RETORQUED LINE AND PERFORMED OPS CHECK OF APU PNEUNATICS WITH NO FLUCTUATION NOTED WITH SYSTEM LOASDR HALA2011052300217Apu · shutdownAPU AUTO SHUTDOWN AFTER 2ND ENGINE WAS SHUT DOWN.//PERFORMED FIM 49-11-00 BITE OF APU ECU NO FAULTS NOTED APU STARTED ON FIRST ATTEMPT. OK FOR SERVICE.SDR WX0A070856Apu · faultyAFTER LANDING AND STARTING APU, CABIN AND COCKPIT HAD STRONG OILY ODOR WHEN RIGHT PACK WAS PLACED ON APU AIR. INSTALLED SERVICEABLE APU SEE TASK CARD R0594902 FOR WORK ACCOMPLISHED. AIRCRAFT RETURNED TO SERVICE.SDR WX0A070853Apu · leakingHOT FUME SMELL IN CABIN & COCKPIT. COMPLETED SMOKE/FUMES REMOVAL CHECKLIST AND FUME SMELL DISSIPATED. PERFORMED TROUBLESHOOTING PER 21-20-00 AND FOUND APU OIL LEAK BEING INGESTED. PERFORMED BURNOUT OF HIGH PRESSURE PNEUMATIC DUCTING PER AMM 21-20-02 NO HOT SDR AALA20110516TUL04Apu · leakingPHX - CREW REPORTED SMOKE IN THE CABIN. EMERGENCY DECLARED FLIGHT RETURNED PHX LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND OIL LEAKING FROM AUXILIARY POWER UNIT. REPLACED APU AND ACCOMPLISHED PACK BURN. SYSTEM GROUND CHECK NORMAL OPERATISDR CALA2011051300363Apu · failedAPU AUTO-SHUTDOWN DURING ENGINE START WITH AN ASSOCIATED APU TAILPIPE FIRE. TAIL PIPE FIRE EXTINGUISHED, INSPECTED APU FOR ANY EXTERNAL DAMAGE, NONE NOTED. CONFIRMED APU HAS INTERNAL DAMAGE, WILL APU HAS INTERNAL DAMAGE, WILL REQUIRE APU CHANGE. DO NOT STARSDR SWIA201126233Apu · malfunctionedEVIDENCE OF SMOKE WHEN RIGHT PACK IS TURNED ON. (FLT 4449) REPLACED APU ASSEMBLY. P/N 3800488-3, S/N ON P-1196, S/N OFF P-1064.SDR AALA20110508ORD01Apu · failedDURING BOARDING THE AUXILIARY POWER UNIT FAILED CAUSING THE CABIN AND COCKPIT TO FILL WITH SMOKE. PASSENGERS WERE EVACUATED WITH NO INJURIES REPORTED. AIRCRAFT REMOVED FROM SERVICE. REPLACED AUXILIARY POWER UNIT. SYSTEM GROUND CHECK NORMAL OPERATION.SDR UALA2011050902257Apu · leakingAPU DRAIN SHROUD HAS MASSIVE LEAK OF OIL-LIKE FLUID. APU OIL COMING FROM VENT TUBE APU DOWN ABOUT 1-1/2 QUARTS. REVIEW HIST. (APU OIL QTY STS MSGS), IDENTIFY LEAKY DRAIN REF AMM 49-16-00 (601), IF LEAK IS NOT FROM APU DRAINS THEN MUST LOCATE LEAK & REPAIR ASSDR UALA2011042902092Apu · faultyAPU AND APU DOOR EICAS MESSAGE, NO START. REPLACED APU AND OPS CHECK NORMAL PER MM.SDR UALA2011041101756Engine · making metalFOUND SILVER METAL CHIPS ON MAGNETIC CHIP DETECTORS OIL SUMP AND MID BEARING. REPLACED APU ASSY, OPS CHECKED GOOD, NO LEAKS, NO FAULTS.SDR USAA2011040891383Apu · leakingFLT 504 SAN-PHX - FUMES/CABIN ODOR - FLIGHT ATTENDANTS REPORTED A DIRTY SOCK SMELL DURING CLIMB AND DESCENT THROUGHOUT THE AIRCRAFT, BUT NO SMELL WAS NOTED IN THE COCKPIT. MAINTENANCE FOUND THE APU LEAKING OIL AT THE CASE SPLIT LINE FORWARD OF THE APU INTAKE.SDR 2011FA0000257Gearbox · making metalLOW BLEED AIR MANIFOLD PRESSURE TO TO APU OUTPUT LOW. LARGE PIECES OF METAL FOUND IN THE GEARBOX CAUSING REMOVAL AND REPLACEMENT.SDR UALA2011040101570Apu · malfunctionedAPU AUTOSHUTDOWN WITH APU BATTERY MESSAGE AND APU BATTERY CHARGER MESSAGE. REPLACED APU BATTERY AND BATTERY CHARGER, NO HELP. CHECKED APU OIL LEVEL ON APU PAGE, NO OIL SHOWS. CHECKED APU NO OIL IN SIGHT GLASS, CHECKED MASTER CHIP HAS METAL. REPLACED APU PER MSDR UALA2011032801480Apu · malfunctionedAPU CONTROL STATUS MSG. APU CHECK FOUND METAL IN FILTER. APU INOPED PER MEL. AT NEXT MAINTENANCE OPPORTUNITY WITHOUT DISRUPTING SCHEDULES, NEED TO REPLACE APU AT NEXT OPPORTUNITY. REPLACED APU PER MM.SDR ASAA1159251Apu · malfunctionedON DESCENT "DIRTY SOCK" SMELL FROM AIR CONDITIONING SYSTEM. VERIFIED THAT THERE IS OIL SMELL WHEN USING LEFT AND RIGHT PACKS WITH THE APU AS THE AIR SOURCE. REMOVED AND REPLACED APU PER B737 800 AMM 49 11 00 400 803 ITEM G TO L (4) (G). RAN APU USING LEFT A
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