JASC 4920

Service difficulty reports · 2,432

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.

SDR DL76L962522Apu · failedDURING GROUND OPERATIONS, APU AUTO SHUTDOWN DUE WITH TAILPIPE FIRE. INSPECTION REVEALED GEARBOX OIL IN TAILPIPE CAUSING FIRE. REPLACED APU.Nov 14, 1996 · N175DN · Boeing 767332SDR 9622873218Apu · failedSHORTLY AFTER TAKEOFF, STRONG OIL FUMES WERE DETECTED THROUGHOUT THE AIRCRAFT. AIRCRAFT RETURNED TO MSP. GROUND MAINTENANCE FOUND OIL IN THE APU DUCTS. THE APU WAS REPLACED.Oct 25, 1996 · N318US · Airbus A320211SDR 96UAL900822Turbine Wheel · disintegratedAPU MUFFLER AND EXHAUST PIPE REQUIRE REPLACEMENT DUE TO DAMAGE DURING APU FAILURE. *S/D* THE TURBINE WHEEL FAILED CAUSING UNCONTAINED SEPARATION. THE CAUSE IS BEING ADDRESSED BY INTRODUCTION OF CONTAINMENT AUGMENTATION RING THROUGH SERVICE BULLETIN 49-A7189Oct 18, 1996 · N997UA · Boeing 737291SDR 96UAL900794Seal · wornCREW REPORTED SMOKE AND ODOR IN CABIN. ISOLATED TO RIGHT AIR CONDITIONING PACK. *S/D* FOUND CARBON SEALS WORN. REPLACED CARBON SEALS AND CLEANED COKE FROM APU.Oct 9, 1996 · N7464U · Boeing 727222SDR ORJA9651Apu · failedWHILE OPERATING ON THE GROUND, APU MADE A LOUD BANG AND SHUT DOWN. APU TROUBLESHOT TO UNCONTAINED TURBINE FAILURE. REPLACED AUXILIARY POWER UNIT. (M)Sep 15, 1996 · N878RA · Doug DC983SDR CALA9601171Apu Compressor · damagedTHERE WAS A STRONG PUNGENT ODOR IN THE AIRCRAFT CABIN SHORTLY AFTER TAKEOFF. NO ODOR WAS NOTICED DURING CRUISE PORTION OF FLIGHT WITH BOTH PACKS OPERATING. MAINTENANCE FOUND THE APU COMPRESSOR DAMAGED AND SEAL LEAKING. THE APU WAS PLACARDED INOPERATIVE FOR Aug 15, 1996 · N14890 · Doug DC982SDR CALA9601150Apu · oil leakA FLIGHT ATTENDANT REPORTED SMOKE ENTERED THE CABIN JUST AFTER TAKEOFF FROM DEN. THE SMOKE SOURCE WAS ISOLATED TO AIR CONDITIONING PACKS AND THE AIRCRAFT WAS RETURNED TO DEN. MAIINTENANCE FOUND THE APU WAS BLOWING OIL UP THROUGH PLENUM INTO THE AIR SYSTEM. Aug 9, 1996 · N17812 · Doug DC982SDR AU960695Turbine · separated(AUS) APU FAILED DURING GROUND RUN - INVESTIGATION FOUND LARGE PIECES OF METAL IN THE MUFFLER AND THE LOWER SHROUD - SUBSTANTIAL EXTERNAL DAMAGE WAS ALSO PRESENT - FURTHER INSPECTION FOUND THAT THE APU HAD MOVED IN ITS MOUNTS - SUSPECT FAILURE DUE TO SEPARATIMay 11, 1996 · Boeing 737476SDR 96ZZZX3048Duct · crackedWHILE ACCOMPLISHING 500-HOUR AIRFRAME INSPECTION, ONE OF THE INSPECTION REQUIREMENTS CALLED OUT TO INSPECT THE APU. DURING INSPECTION, LARGE PIECES OF METAL WERE FOUND BEHIND THE APU. APU REMOVED WHICH REVEALED THE CRACKED RAM AIR DUCT ASSY. THE RT SIDE OF May 1, 1996 · N345GL · Hwksly BH125400ASDR 96UAL900240Turbine Wheel · failedAPU DISCHARGED METAL FRAGMENTS ONTO RAMP. SUPPLEMENTAL DATA UPDATE: FOUND TURBINE WHEEL FAILED. CAUSE UNDER INVESTIGATION. PART TOTAL CYCLES, 6,673.Apr 8, 1996 · N9065U · Boeing 737222SDR USAAD96023Burner Can · crackedPIT - FLT 858 - FLT RETURNED TO FIELD WHEN APU SHUTDOWN. LEFT GENERATOR WAS ON MEL. MAINTENANCE REPLACED THE APU BURNER CAN AND THE LEFT GENERATOR, CSD AND COOLER. (M)Feb 14, 1996 · N935VJ · Doug DC931SDR 96ZZZX1152Gear · failedAPU RECEIVED AND AN INVESTIGATION CONDUCTED DUE TO OIL CONTAMINATION AND HARD TO ROTATE. UPON DISASSEMBLY OF THE GEARBOX ASSEMBLY, PN 160192-100, SN 5002-1206, THE INTERNAL GEAR WAS FOUND CRACKED AND SPLIT IN THREE PLACES FROM THE BASE TO THE HOLES. ALL THREFeb 7, 1996 · N2FORSDR 96UAL900093Compressor · damagedREPORTED SMOKE IN CABIN. FLIGHT DIVERTED TO SPOKANE. FOREIGN OBJECT DAMAGE IN THE APU DRIVEN COMPRESSOR. REPLACED APU.Feb 6, 1996 · N547UA · Boeing 757222SDR AALA960161Apu · leaking oilJFK - FLT 0735 - AFTER TAKEOFF JFK DURING CLIMB-OUT, ACRID BURNING ODOR NOTED THROUGHOUT AIRCRAFT WITH NO OTHER ABNORMAL INDICATIONS. ACCOMPLISHED CHK LIST AND ACFT RETURNED TO JFK LANDING WITHOUT INCIDENT. ACCOMPLISHED BORESCOPE OF NR 1 ENG COMPR, NO DEFECTJan 29, 1996 · N1756 · Doug MD11SDR ASAA9680023Turbine Wheel · failedSEA - DURING TAXI TO GATE AFTER LANDING OF FLT 85 - CREW REPORTED THE AIRBORNE AUXILIARY POWER UNIT SHUTDOWN. THE AIRBORNE AUXILIARY POWER UNIT HAD TURBINE WHEEL MATERIAL FAILURE WHICH RESULTED IN PIECES PENETRATING THE PLENUM. THERE WAS NO DAMAGE TO THE ENCJan 10, 1996 · N949AS · Doug DC983SDR USAAF96005Apu · failedCRW - FL 7007 - EN ROUTE TYS-PIT - CABIN ALTITUDE BEGAN CLIMBING AND WAS UNCONTROLLABLE. CREW DESCENDED AND DIVERTED TO CRW. BOTH PACKS WERE REPORTED AS OPERATING SATISFACTORILY. MAINTENANCE FOUND A HOLE IN THE AFT PRESSURE BULKHEAD DUE TO AN UNCONTAINED APJan 8, 1996 · N850US · Fokker F28MK0100SDR PCAA9500249Apu · failedAPU FAILED ON START UP. INSPECTED APU PER MEL PROCEDURES, FOUND APU DAMAGED. AIRCRAFT FERRIED TO MDT FOR REPAIRS. INSPECTED APU, FOUND UNCONTAINED CATASTROHIC FAILURE OF THE COMPRESSOR ROTOR. REMOVED AND REPLACED APU. PERFORMED STRUCTURAL REPAIR MANUAL ANNov 16, 1995 · N816EX · Dhav DHC8102SDR CAL950793Gasket · leakingFLT NR 0220 - CLE - THE APU WAS STARTED ON SHORT FINAL INTO CLE, THEN ON LANDING ROLL OUT THE APU FIRE WARNING ACTIVATED. THE APU WAS SHUT DOWN AND THE FIRE BOTTLE WAS DISCHARGED. THE FIRE WARNING CEASED. THE FIRE DEPARTMENT WAS ALERTED AND OBSERVED NO FIRESep 6, 1995 · N69333 · Boeing 7373T0SDR CAL950785Apu · inoperativeFLT NR 356 - EWR - THE APU WAS IN USE PRIOR TO TAKEOFF FROM EWR, BUT WAS SHUT DOWN BEFORE TAKING THE RUNWAY. SMOKE ENTERED THE CABIN MOMENTARILY AFTER TAKEOFF. THE SMOKE DISSIPATED AND THE FLIGHT WAS CONTINUED WITHOUT FURTHER PROBLEM. THE APU WAS REMOVED ANSep 2, 1995 · N14840 · Doug DC982SDR 95UAL900093Turbine Wheel · failedAPU TURBINE WHEEL SEPARATED INTO TWO HALVES. FAILURE DUE TO A CASTING FLAW AT THE MIDDLE OF THE TURBINE WHEEL.Aug 15, 1995 · N7273U · Boeing 727222SDR AALA951447Engine · defectiveDTW - FLT 1374 - DURING DESCENT INTO DFW, APU FIRE WARNING FOLLOWED BY APU AUTO SHUTDOWN. DISCHARGED APU FIRE BOTTLE AND AIRCRAFT LANDED DTW WITHOUT INCIDENT. PLACARDED APU AND APU FIRE EXTINGUISHING SYSTEM. SUBSEQUENTLY, REPLACED APU AT ORD ON SAME DATE. RAug 14, 1995 · N1433B · Fokker F28MK0100SDR AWXA9500387Bearing · fracturedLAS - FLT NR 100 - PHX-LAS - AT GATE AREA, RAMP PERSONNEL REPORTED SMOKE AND FLAMES FROM THE APU TAIL PIPE. APU WAS SHUT DOWN WITH REMOTE SWITCH. FIRE BOTTLES WERE NOT DISCHARGED. FIRE TRUCKS RESPONDED, BUT TOOK NO ACTION. SMOKE WAS REPORTED IN CABIN. NO Jul 11, 1995 · N620AW · Airbus A320231SDR 95ZZZX3593Auxiliary Power · failedPOPPING SOUND HEARD WHEN APU LOAD CONTROL VALVE OPENED ON FIRST START OF DAY. INSPECTED/FOUND TURBINE NOZZLE BLADE TIPS MISSING MATERIAL. REMOVED APU, INSTALLED LOANER UNIT. TT 1,450 HRS. TSO 1,215 HRS. CSN 1,146.Jul 7, 1995 · N399CF · Cndair CL6013ASDR CAL950434Engine · flamed outFLT NR 0692 - EWR - THE APU FLAMED OUT AT FL 290, OPERATION OF THE APU CHECKED GOOD AT ALL ALTITUDES BELOW FL 290. MAINTENANCE PERFORMED AN OPERATIONAL CHECK OF THE APU ON THE GROUND AND NO DEFECTS WERE NOTED. (M)Jun 2, 1995 · N16883 · Doug DC981SDR WRLA95030Compressor Seal · rupturedJED - DURING TAXI, FLIGHT CREW SMELLED A BAD ODOR AND SAW SMOKE FILLING THE AIRCRAFT. CAPTAIN ELECTED TO RETURN TO GATE WITHOUT FURTHER INCIDENT. MAINTENANCE PERSONNEL OPENED AIR CONDITIONING PACKS AND OBSERVED TURBINE OIL ON COALESCER BAGS. SUSPECT SEAL RUMay 21, 1995 · N3024W · Doug DC1030SDR WTAA950187Apu · fumesSFO - OIL FUMES REPORTED IN COCKPIT WITH APU IN OPERATION. FUMES DIMINISHED AFTER SHUTDOWN OF APU. MAINTENANCE DEFERRED APU PER MEL 49-00-01. AIRCRAFT RETURNED TO SERVICE. (W)May 6, 1995 · N251YV · Emb EMB120RTSDR PCAA9500218Apu · smokingAFTER TAKEOFF AIRCRAFT FILLED WITH FUMES AFTER BLEEDS WERE SELECTED ON. FOUND APU USING OIL, PUTTING OIL INTO BLEED SYSTEM, RAN AIRCRAFT WITH ENGINE BLEEDS ONLY. SYSTEM OPS CHECK NORMAL, OK FOR SERVICE. APU INOP PER MEL 49-1. AIRCRAFT RETURNED TO SERVICE. May 2, 1995 · N816EX · Dhav DHC8102SDR CAL950253Combustor Unit · inoperativeDTW - FLT 1851 - A RUMBLING NOISE FOLLOWED BY A SERIES OF BANGS WAS HEARD IN THE AFT SECTION OF AIRCRAFT WHILE IN FLIGHT. INSPECTION BY MAINTENANCE FOUND THAT THE NOISE WAS CAUSED BY SURGING OF THE APU. THE APU COMBUSTOR UNIT WAS FOUND AT FAULT. THE APU COMApr 4, 1995 · N14206 · Boeing 737130SDR COM11775Apu · failedAPU TEMP REACHED 680 DEG DURING START. RAMP PERSONNEL SAW FLAMES 3 MINUTES AFTER ABORT. REPLACED APU.Feb 9, 1995 · N243CA · Emb EMB120RTSDR 94UAL767043Carbon Seal · chippedFUMES IN COCKPIT WHEN APU SUPPLIED PACKS. REPLACED APU. SHOP FOUND CARBON SEAL CHIPPED.Jan 16, 1995 · N609UA · Boeing 767222SDR WTAA950042Apu · malfunctionedRDM - FLAMES REPORTED FROM APU EXHAUST DURING APU SHUTDOWN ON GROUND. NO ACTION REQUIRED BY FLIGHT OR GROUND CREW TO EXTINGUISH FIRE. FLAMES IMMEDIATELY SUBSIDED FOLLOWING SHUTDOWN. MAINTENANCE INSPECTED APU AND TAILCONE. MINOR PAINT DAMAGE TO TAILCONE NOTJan 11, 1995 · N201YW · Emb EMB120RTSDR 94UAL737281Apu · fodAT DEPARTURE, APU AUTO SHUTDOWN. WHEN RESTART WAS ATTEMPTED, THERE WAS A FIRE WARNING AND THE BOTTLE WAS DISCHARGED. APU INOPED AND EXTERNAL INSPECTION COMPLETED. APU WAS REPLACED. FOUND RAG IN THE INLET AND THE ROTATING GROUP HAD HIT THE STATIONARY GROUP Jan 4, 1995 · Boeing 737*
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