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 AALA20050588O-Ring · inoperativeEWR INFLIGHT T1147/11SEP ACRID SMOKE IN CABIN IMMEDIATELY AFTER TAKEOFF. PACKS SHUT OFF AND LANDED EWR WITHOUT INCIDENT. REPLACED O-RING AT THERMOSTAT VALVE OF APU. PERFORMED PACK BURN OUT AND ENGINE HIGH POWER RUN UP WITH NO SMOKE NOTED. SYSTEM GROUND CHSDR 2005FA0001136Cap · crackedAPU COMBUSTOR CAP HAD A CRACKED WELD. THE CRACKED WELD WAS ADJACENT TO THE HEAT DEFLECTOR. UNIT HAD 820 TT SINCE NEW.SDR AU510001689Seal · failedAPU BLEED VALVE AND DUCTS CONTAMINATED WITH OIL. INVESTIGATION FOUND THE APU LOAD COMPRESSOR SEAL FAILED.SDR DL76G050433Apu · contaminatedAPU FAULT ON START OF LEFT ENGINE. APU WOULD NOT RESTART. REMOVED PLASTIC BAG FROM INLET AND REPLACED SURGE VALVE.SDR AALA20050511Apu · odorDFW - DURING TAXI WHEN APU WAS TURNED ON, CAUSED SMOKE IN CABIN AND COCKPIT. AN EMERGENCY EVACUATION OCCURRED. TAIL CONE SLIDE DEPLOYED. REPLACED SLIDE AND TAIL CONE. REPLACED APU DUE TO SKYDROL INGESTION CAUSING SMOKE AND ODOR IN CABIN AND COCKPIT. SYSTESDR A6WA200560017Apu · bird ingestionSMOKE IN CABIN WHEN TURNING ON PACKS. MAINTNANCE C/W EO, BOTH AC PACKS. FOUND BIRD AND OIL IN APU INTAKE. REMOVED AND REPLACED APU, BOTH AC PACKS, JET PUMPS AND WATER INJECTOS IAW EO, SYSTEM OPS CHECK GOOD. (K)SDR DL76G050384Turbine · failedRAN APU ENTIRE FLT, AFTER LDG WHEN SWITCHED BLEEDS TO APU TO RUN PACKS SMELLED AC SMOKE. REPLACED APU.SDR DL738050380Apu · smokeON L/O, FOUND APU LOW ON OIL. SERVICED APU. ON APU START ATTEMPT, FOUND HEAVY SMOKING IN APU COMPARTMENT WITH TORCHING FROM APU EXHAUST. REPLACED APU.SDR 2005UALA00670Switch · malfunctionedLANDED SFO UNDER AMBER ALERT DUE TO LOSS OF GENERATOR AND APU NO-START. GENERATOR DELTA-P SWITCH REPLACED. OPS CHECK GOOD. NO METAL FOUND ON CHIP DET. IN ADDITION TO REPLACEMENT OF GEN DELTA P SWITCH, CH ITEM INCLUDED TO REPLACE APU GENERATOR DUE TO MULTIPSDR 471082Turbine · failedRECEIVED SUBJECT APU WITH A BURST IMPELLER. THE OEM HAS BEEN NOTIFIED AND IS CURRENTLY UNDER INVESTIGATION FROM HONEYWELL OEM. ONCE THE INVESTIGATION IS COMPLETE AN OFFICAL REPORT WILL BE SUBMITTED TO THE CUSTOMER FROM REPAIR & OVERHAUL AND OEM ENGINEERING.SDR 2005UALA00582Apu · shutdownDIVERTED DUE TO AUXILIARY POWER UNIT AUTO-SHUTDOWN WITH LEFT GENERATOR DEFERRED INOPERATIVE. UPON LANDING APU FOUND 4.0 QUARTS LOW. MM ADDED OIL. ENGINEERING MONITORING OIL CONSUMPTION. TO DATE CONSUMPTION IS .014 QT/HOUR. LIMIT IS .20 QT/HR. SAMC REQUESTEDSDR A6WA200560008Apu · smokeAPU AIR PUTS SMOKE IN CABIN COMPLIED WITH EO E04/022/621 REV C DETERMINED APU SOURCE OF OIL REF TO WO85137 FOR ALL DISCREPANCIES AND WORK PERFORMED. MAINTENANCE REMOVED AND REPLACED APU ASSEMBLY. (M)SDR TSAA0549024Engine · failedNON-ETOPS FLT 441, LAS-OAK: APU FAILED IN FLIGHT WITH FAULT LIGHT AND SHUT DOWN AUTOMATICALLY. TROUBLESHOT PER FIM 49-31-00-810-808, BITE CHECK SHOWS NO CURRENT FAULTS. FAULT WAS INTERMITTENT. OPS CHECK GOOD. COULD NOT DUPLICATE ON GROUND. FLIGHT VERIFICSDR GTIA050156Check Valve · failedON APU START UP BOTH ENGINES WOULD GET ONLY 12 PERCENT N2, APU OIL TEMP HIGH LIGHT CAME ON, TAIL COMPARTMENT HIGH CAME ON, AIRCRAFT TAIL SWAP WITH N834NK. REMOVED AND REPLACED AIRSTART CHECK VALVE, LEAK CHECK GOOD. (M)SDR DXTA200500711Apu · failedCABIN FILLED WITH OILY SMELLING SMOKE AFTER APU STARTED ON GROUND. SIGNIFICANT DROP NOTED ON APU OIL LEVEL. CHECKED APU OIL LEVEL FOUND TO BE JUST BELOW THE ADD OIL LINE, STARTED APU AND RAN OIL AIRCONDITIONING AT DIFFERENT TEMPERATURE SETTINGS. COULD NOT DSDR CA050629004Apu · damagedTHE APU SUFFERED DAMAGE TO THE HIGH PRESSURE TURBINE BLADES AND SHEARING OF THE POWER TURBINE SHAFT AND CASING FLANGE BOLTS. P&WC WILL INVESTIGATE THE EVENT AND ADVISE OF ROOT CAUSE ONE DETERMINED.SDR 2005FA0000798Impeller · brokenDURING APU OPERATION, A PIECE OF THE 3822400-5 IMPELLER SEPARATED AT THE RIM. THIS RESULTED IN HIGH VIBRATION LEVELS AND CATASTROPHIC DAMAGE TO THE LOAD COMPRESSOR AND POWER SECTIONS. (K)SDR 2005FA0000647Blade · crackedTHIS IMPELLER HAS EXPERIENCED WHAT LOOKS LIKE HIGH CYCLE FATIGUE WITH A VERY LOW TT ON THE UNIT. IT APPEARS TO HAVE FAILED DUE TO WHAT STARTED AS A FATIGUE CRACK AND RESULTED IN A LARGE PIECE OF THE IMPELLER COMING OFF. THIS IMPELLER AND ANOTHER WERE PURCHASDR REXA2005054Apu · smokeSMOKE IN COCKPIT AND CABIN WHEN THE APU WAS STARTED. INVESTIGATED, FOUND APU TO BE THE SOURCE OF THE SMOKE. APU WAS DEFERRED UNTIL IT CAN BE SCHEDULED OFF. (K)SDR ZN3R2005001Turbine · separatedRECEIVED APU 85-129 PN:380428-1 SN P-35204 FROM LAN CHILE AIRLINES ON 4/11/05. DURING VISUAL INSPECTION OF THE APU IT WAS BROUGHT TO THE ENGINEER'S ATTENTION THAT AN EXDUCER BLADE WAS MISSING FROM THE TURBINE WHEEL AND THERE WAS A HOLE IN THE SIDE OF THE EXHAUSDR 2005FA0000608Blade · fatiguedTHIS IMPELLER HAS EXPERIENCED WHAT LOOKS LIKE HIGH CYCLE FATIGUE WITH A VERY LOW TT ON THE UNIT. IT APPEARS TO HAVE FAILED DUE TO WHAT STARTED AS A FATIGUE CRACK AND RESULTED IN A LARGE PIECE OF THE IMPELLER COMING OFF. THIS IMPELLER AND ANOTHER WERE PURCHASSDR DL757050196Seal · leakingMUSTY SMELL IN COCKPIT. FOUND COCKPIT AND FWD CABIN TO HAVE SMELL OF BURNED OIL. FOUND APU LOAD COMPRESSOR SEAL LEAKING. PERFORMED DUCT BURNOUT. APU WILL NEED REPLACEMENT. FWD APU TO MCO AND PLAC.SDR DLM88050195Inlet · contaminatedBURNING OIL SMELL IMMEDIATELY AFTER TAKEOFF LASTED ONLY A FEW MINUTES. FOUND SMALL AMOUNT OF HYD FLUID IN APU INLET. CLEANED APU INLET, PERFORMED ALTERNATE DUCT BURN OPN 5090. REPLACED WATER SEPARATOR BAGS, NO FURTHER ODOR NOTED.SDR SWIA200514831Apu · smokeON TAXI, F/A REPORTED SMOKE IN CABIN. REPLACED THE APU ASSY IAW MM 49-10-00. PACKS OPERATING NORMALLY AT THIS TIME IAW CRJ AMM REF CHAP 21-00-00.SDR WX0500036Pressure Switch · failedLAS TO FNL - CREW REPORTED APU AUTO SHUTDOWN DUE TO LOW OIL PRESSURE IN FLIGHT. AIRCRAFT RETURNED TO LAS AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED OIL PRESSURE LOW SWITCH IAW MM 49-90-03. APU OPERATIONALLY CHECKED GOOD. AIRCRAFT RETURNESDR DL733050181Apu · defectiveSMOKE SMELL IN CABIN WITH APU AIR. REPLACED APU.SDR MASA200500234Apu · failedSMOKE IN THE CABIN PRIOR TO THE FIRST FLIGHT OF THE DAY. MX TROUBLESHOT FAULT AND OPERATED ENG NR 2 WITH BOTH PACKS AND FOUND THAT THE SMOKE WAS CAUSED BY THE APU. MX RE-OPENED THE MEL FOR THE APU 3/23/05. MAINTENANCE REPLACED THE APU.SDR A6WA200540113Apu · making metalAPU FAULT CONDITION IN FLIGHT. SMOKE APPEARED IN CABIN. CLOSED PACKS AND SHUTDOWN APU. INSPECTED APU COMPARTMENT, NO FUEL OR OIL LEAKS NOTED CHECKED BOTH ACM`S IAW AMM. OIL LEVEL CHECK GOOD. CHECKED APU OIL LEVEL IAW AMM. OIL LEVEL GOOD. FOUND METAL INSSDR DLM88050168Apu · contaminatedENGINE ANTI ICE ON NOTICED FAINT OIL SMELL, SMELL DISSIPATED WHEN TURNED OFF. ANTI ICE ON, SMELL RETURNED. FOUND APU CONTAMINATED WITH SKYDROL/OIL. CLEANED APU INLET AND PERFORMED FULL DUCT BURNOUT PER OPERATION 5089 AS PRECAUTIONARY.SDR CA050312001Apu · damaged(CAN) AFTER APU SHUTDOWN, FIRE AND SMOKE OUT OF EXHAUST, FOUND OIL-SYSTEM EMPTY AND OIL BURNING AT APU EXHAUST: APU EXTINGUISHED WITH FIRE X BOTTLE. FIRE DAMAGE INSPECTION APU EXHAUST HEATSHIELD, LOWER TRANSLATING, COWL AND ACCESS PANEL NR 422DB,422BB, 422CB, SDR CA050301006Apu · smoke(CAN) ON DEPARTURE, AIRCRAFT FILLED WITH SMOKE FROM APU OIL. AIRCRAFT AT THE BASE, FLIGHT DATA RECORDER PULLED SENT TO PLAYBACK CENTER FOR READ OUT. APU COMPT. INSPECTED NO FAULT FOUND SO FAR EXCEPT GLYCOL. MORE INFO WILL FOLLOW AS BECOMES (AVAILABLE).SDR COMA0560149Apu · contaminatedFLIGHT 5886 DURING CLIMBOUT OF BWI CREW NOTED EVIDENCE OF SMOKE IN THE COCKPIT, CREW DECLARED AN EMERGENCY AND RETURNED TO THE FIELD, LANDING WITHOUT INCIDENT. PERFORMED ENGINE RUNS, DISCREPANCY COULD NOT BE DUPLICATED. AIRCRAFT HAD BEEN DE-ICED PRIOR TO DEPSDR AALA20050161Apu · malfunctionedMCO - AFTER INTERMEDIATE LEVEL OFF AT FL220 SMOKE IN COCKPIT VERY SUDDEN & EVIDENT. FIRST CLASS F/A SMELLED SMOKE, ROW 26 PASSENGER INFORMED AFT F/A SMOKE SMELLED. ACCOMPLISHED CABIN SMOKE FIRE PROCEDURE TURNING OFF BOTH UTILITY BUS SWITCHES, BOTH RECIRCULATSDR A6WA200540043Apu · seizedAPU FAILED, REQUESTED INSPECTION. COMPLIED WITH APU INSPECTION FOUND APU TO BE SEIZED. APU INLET EXHAUST NO DEFECTS NOTED. ALSO SUSPECT BAD FCU. COMPLIED WITH ACTION PLACARD PLACED ON MEL. MAINTENANCE VERIFIED APU SEIZED. REMOVED AND REPLACED APU ASSEMBLYSDR TSAA0549007Apu · defectiveFLT 446, HNL-LAS: APU EGT SPIKE 660 DEGREES THEN FLUCTUATING AT CRUISE; FLT ATTENDANT REPORTED LOW RUMBLING SOUND; APU CPS FREQ BLANK; AMPS=0, VOLTS=1. SHUTDOWN APU; FLIGHT ATTENDANT REPORTED RUMBLING SOUND STOPPED. DIVERTED TO OAK, UNEVENTFUL LANDING. REPLSDR DL767050067Engine · failedWHILE RUNNING APU ON GND WITH PACKS ON MTC NOTICED SMOKE IN THE CABIN AND SMOKE OUT OF APU EXHAUST. FOUND APU COMPRESSOR OUTLET DRIPPING OIL. REPLACED APU.SDR A6WA200540022Apu · failedAPU FAILED AND SHUTDOWN ON TAKEOFF ROLL AND ROTATION. TRIED TO RELIGHT ON DESCENT, RAN APPROXIMATELY 3 MINUTES AND SHUTDOWN. STRONG FUEL SMELL PRESENT IN CABIN. PERFORMED APU OPS CHECK IAW AMM. INSPECTED AND FOUND NO EVIDENCE OF FUEL LEAK. NO FAULTS ON ECSDR SB05011Apu · malfunctionedBDL - FLT902 - EN ROUTE FROM PHL TO BDL, THE NR 1 ENG CSD LOW OIL PRESSURE LIGHT ILLUMINATED. CREW DISCONNECTED THE CSD PER QUICK REF HANDBOOK PROCEDURES AND STARTED THE APU. AFTER APPROX TEN MINUTES OF USE, THE APU OVERSPEED LIGHT ILLUMINATED AND THE APU SHSDR DL733050050Apu · fireAFTER LANDING STARTED APU. TAXIED TO GATE, DURING ENGINE SHUTDOWN HAD APU FIRE LIGHT. ACCOMPLISHED QRH PROCEDURE. MAINTENANCE INSPECTED, FIRE BOTTLE FOUND DISCHARGED. REMOVED BATHTUB AND INSPECTED APU FOR DAMAGE. FIRE WAS LIMITED TO TAILPIPE AREA. REAR FSDR DXTA200500549Apu · smokeON GROUND APU WILL FILL CABIN WITH EXHAUST WHEN BLEED AIR ON. ITEM IS UNDER INVESTIGATION.SDR COMA0560047Apu · smokeFLIGHT 5834 APU SMELLED LIKE FUEL, SMOKE COMING FROM INTAKE. COULD NOT DUPLICATE. INSPECTED APU FOR FUEL LEAKS. NO DEFECTS FOUND.SDR 0500021240Apu · smokeDURING CLIMB, FLIGHT ATTENDANT REPORTED MULTIPLE SMOKE DETECTORS SOUNDING AND SMOKE/SMELL IN THE CABIN. FLIGHT CREW RETURNED TO DEPARTURE AIRPORT PERFORMING AN UNEVENTFUL LANDING. MAINTENANCE REPLACED THE APU. OPERATIONAL CHECK GOOD.SDR SWIA200414313Apu · malfunctionedAPU BLEED AIR CAUSING SMOKE IN CABIN WITH PACKS ON. REPLACED APU ASSEMBLY IAW EMB 120 MM 49-00-01 OPERATIONAL CHECK GOOD. P/N 3800376-1, S/N P-449.SDR MASA200400692Apu · seizedASH FLT 2784 CLT - GSO RETURNED TO THE FIELD DUE TO SMOKE IN THE CABIN. MAINTENANCE FOUND THE APU SIEZED. RAN THE ENGINES TO CLEAR THE CABIN. MX DEFERRED THE APU. 12/15 MAINTENANCE INSPECTED AND FOUND THE APU NOT SIEZED AND WAS FOUND TO BE GYLCOL.SDR C2XA04BT130Odor · detectedDURING TAXI CREW REPORTED VERY STRONG BURNING SMELL FOLLOWED BY GRINDING NOISE AND VIBRATION. SHUTDOWN APU AND INDICATIONS WENT AWAY. INSPECTED APU, ENGINES AND AIR CONDITIONING PACKS IN VARIOUS CONDITIONS OF POWER AND BLEED SETTINGS. NO DEFECTS NOTED AND SDR C2XA04CL110Apu · fireCREW REPORTED AN APU FIRE WARNING INDICATION DURING AIRBORNE START. APU SHUTDOWN AND AIRCRAFT LANDED WITH OUT INCIDENT. APU REPLACED AND OPERATIONALLY CHECKED GOOD.SDR 2005FA0000162Compressor Wheel · damagedRECENTLY EXPERIENCED A PROBLEM WITH A RELATIVELY LOW TIME COMPRESSOR WHEEL. THIS NEW STYLE COMPRESSOR WHEEL IS A REPLACEMENT WHEEL TO SUPPORT AD NR20021502. THE WHEEL IN QUESTION LOST A LARGE INDUCER TIP THAT PENETRATED, AND CAME VERY CLOSE TO EXITING THE AISDR DLM88040984Turbine · failedSMOKE ODOR IN THE CABIN. REPLACED APU FOR LEAKAGE.SDR C2XA04CL104Bleed Valve · odorTHE CREW REPORTED STRONG SMELL OF FUEL IN CABIN AND COCKPIT DURING APU START. BLEED VALVE REPLACED AN OPERATIONALLY CHECKED OK.SDR C2XA04CL103Odor · detectedCREW REPORTED THAT DURING START OF APU THERE WAS A STRONG ODOR OF FUEL IN THE CABIN. MAINTENANCE OPERATIONALLLY CHECK AND FOUND NO DEFECTS. AIRCRAFT WAS RETURNED TO SERVICE.
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