JASC 4950

Service difficulty reports · 951

Reports filed under 4950 · APU Bleed Air 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 = '4950'
  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 SWAA982575Apu · odorDURING SCHEDULED RON CHECK, FOUND FUEL SMELL IN CABIN WITH APU AIR ON. CONT PER MEL 49-1. OK FOR GROUND USE ONLY. OK FOR ENGINE START.Oct 18, 1998 · N102SW · Boeing 7372H4SDR HALA9800339Seal · failedFLT 168 - HNL - TAIL TEMP HIGH LIGHT CAME ON DURING CLIMB-OUT. AIRCRAFT MADE AN UNEVENTFUL LANDING IN HNL. REPLACED RT PACK PERRY SEALS, RE-TORQUED ACM CLAMPS, RE-TORQUED APU LOAD CONTROL CLAMP. OPS CHECK, LEAK CHECK OK FOR SERVICE. (M)Oct 9, 1998 · N669HA · Doug DC951SDR QXEA9801293Apu · smokingPDX - AFTER TAKEOFF, THE LAV SMOKE DETECTOR SOUNDED AND CABIN FILLED WITH SMOKE. MAINTENANCE INSPECTED AND FOUND APU AT FAULT. ALSO FOUND OIL IN WATER SEPARATOR ON BOTH NR 1 AND NR 2 PACKS.Sep 11, 1998 · N496US · Fokker F28MK4000SDR COMA9810110Apu · smokingFLIGHT DECK FILLED WITH SMOKE DURING PRE-FLIGHT INSPECTIONS, APU WAS OPERATING, NO PASSENGERS ON BOARD. DEFERRED APU PER MEL 49-00-1.Apr 24, 1998 · N189CA · Emb EMB120RTSDR AWXA9800108Apu · failedAFTER TAKEOFF FUMES SMELLED IN FLT DECK AND CABIN. LATER IN FLIGHT FUMES DID NOT DIMINISH MUCH AND APPEARED TO BE COMING FROM ATR CONDITIONING SYSTEM, DEFFERED. REMOVED AND REPLACE L AND R PACK COALESCER BAGS. PLACARDED APU INOPERATIVE PER MEL 49-01 C/N 907Apr 19, 1998 · N326AW · Boeing 737301SDR 98ZZZX1419Seal · failedAT FL 410, CABIN BEGAN TO FILL WITH WHAT APPEARED TO BE (AIR CONDITIONING) AC SMOKE. CREW FOLLOWED AOM SMOKE CLEARING AND AC SMOKE PROCEDURES. AIRCRAFT DIVERTED TO MCO. THE APU'S OIL/AIR SEALS WERE FAILING AFTER RUN-UP. APU WAS DEFERRED PER MEL. (APU WOULMar 6, 1998 · N514AT · Boeing 75723NSDR VNAA9802022Apu Bleed Syst · smokingDURING THE CLIMB-OUT AFTER TAKEOFF, THE CREW NOTICED SMOKE IN THE CABIN. THE CREW LEVELED OFF AND DECLARED AN EMERGENCY. THE SMOKE DISSIPATED AFTER THE AIRCONDITIONING WAS SELECTED OFF. THE AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT FURTHER INCIDENT.Feb 25, 1998 · N429JS · Dorner DO328100SDR 98FDEA00137Bleed Air Duct · contaminatedSHORTLY AFTER TAKEOFF, EXPERIENCED AN UNKNOWN ODOR THE F/O AND RFO EXPERIENCED A BURNING SENSATION IN THE EYES. CREW WENT ON 100 PERCENT O2 AND ACCOMPLISHED ALL CHECKLIST ITEMS. RETURNED TO EWR. COMPLIED WITH CHECKLIST AND DUMPED APPROX 65.0 LBS FUEL. REMOFeb 24, 1998 · N609FE · Doug MD11FSDR AALA980396B Nut · looseORD - FLT 0447 - AFTER TAKEOFF, FLIGHT CREW SMELLED AND SAW SMOKE IN COCKPIT. FLIGHT ATTENDANT CONFIRMED THE SAME IN THE FORWARD CABIN. AIRCRAFT RETURNED TO ORD AND LANDED WITHOUT INCIDENT. MAINTENANCE CLEANED APU AND FOUND A LOOSE B-NUT AT TEE FITTING. TIFeb 22, 1998 · N566AA · Doug DC983SDR VNAA9802004Apu · smokingAFTER T/O, THE COCKPIT AND CABIN FILLED WITH SMOKE. CREW SHUT DOWN ENVIROMENTAL CONTROL SYSTEMS AND RECIRCULATION FANS. ALSO, APU WAS SHUT DOWN. THE SMOKE CLEARED FROM THE A/C. THE A/C RETURNED TO THE FIELD AND LANDED, W/O ANY FURTHER INCIDENTS. MX INSPECFeb 5, 1998 · N458PS · Dorner DO328100SDR MALA975913Apu · contaminatedDURING TAXI, SMOKE IN THE CABIN AND COCKPIT WITH ENGINE BLEEDS ON. CREW RETURNED TO THE GATE. MAINTENANCE INSPECTED AND FOUND APU INGESTED DE-ICE FLUID. CLEANED AND DRIED SYSTEM, ALL CHECKS GOOD.Jan 23, 1998 · N827MA · Dhav DHC8102SDR 98ZZZX1192Apu · odorLAX - FLT 676 - AFTER GALLEY SHED ELECTRICAL SMELL, CONTINUED WITH APU RUNNING APU GENERATOR ON. CHECKED GALLEY AREA, NO ABNORMALITIES NOTED. PERFORMED PACK BURN OUT PROCEDURE. ODOR DISAPPEARED.Jan 17, 1998 · N615AW · Bag BAE146300ASDR DL73K980066Apu · odorSMOKE ALARM WENT OFF IN FWD LAV CREW COULD SMELL ACRID SMELL. FOUND APU PUTTING OIL INTO PNEUMATIC DUCTS. FWD APU TO MCO REPLD DETECTOR BATTERY, REPLD LT AND RT COALESCER BAGS RAN BOTH ENGS AT 1.80 EPR FOR APPROX 15 MINS TO BURN OIL SMELL OUT.Jan 9, 1998 · N319DL · Boeing 737232SDR MWEA97876Apu Bleed · smokingWHILE RUNNING APU WITH NO PAX, MX NOTICED BLUE OILY SMOKE IN CABIN. MX OPERATED BOTH PACKS USING ENGINE AIR, DEFFERED APU.Dec 20, 1997 · N205ME · Doug DC932SDR 97UAL900723Valve · failedAPU BLEED VALVE WOULD NOT OPEN. APU BLEED VALVE IN CLOSED POSITION, AND APU BLEED POWER CIRCUIT BREAKER IS SAFETIED OPEN. *S/D* REPLACED APU BLEED VALVE PER MM 36-11-10, OPS CHECKED GOOD.Sep 21, 1997 · N510UA · Boeing 757222SDR 97UAL900711Duct · brokenNR 1 ENGINE, REPORT SLOW ACCELERATION TO IDLE. AFTER INSPECTION OF APU AREA, BROKEN DUCT WAS IDENTIFIED. APU INOP. *S/D* REPLACED BROKEN DUCT. APU OPS CHECKED NORMAL, AND BOTH ENGINES START AND OPERATE WITHIN NORMAL PARAMETERS.Sep 16, 1997 · N562UA · Boeing 757222SDR 97UAL900697Shut Off Valve · malfunctionedAPU AIR SHUTOFF VALVE WILL NOT GO TO CLOSED POSITION. DEACTIVATED APU AIR BLEED SHUTOFF VALVE IN CLOSED POSITION. *S/D* REPLACED RELAYS K10280 AND K23 IN P37 PANEL WITH NO HELP. REPLACED APU BLEED VALVE, CLEARED ECU AND DUCT PRESSURE WAS NORMAL.Sep 10, 1997 · N588UA · Boeing 757222SDR 97UAL900696Sense Module · malfunctionedAPU DUCT PRESSURE LOW AT ENGINE START, APU INOP. *S/D* SURGE CONTROL VALVE REPLACEMENT, DID NOT HELP. REPLACED PNUEMATIC FLOW SENSING MODULE, AND OPERATION OF APU BACK TO NORMAL.Sep 10, 1997 · N544UA · Boeing 757222SDR 97UAL900689Pneumatic Sys · inoperativeAPU PNEUMATIC PRESSURE AT 5 PSI, PNEUMATICS INOP.Sep 9, 1997 · N653UA · Boeing 767322SDR 97UAL900688Surge Valve · malfunctionedAPU PNUEMATICS INOP. *S/D* REPLACED APU SURGE CONTROL VALVE. MOTORED ENGINES AND DUCT PRESSURE NORMAL.Sep 9, 1997 · N578UA · Boeing 757222SDR 97UAL900662Switch · failedAPU SHUTDOWN AUTOMATICALLY THREE TIMES. *S/D* FOUND LOP FAULT ON ECU. REPLACED LOP SWITCH AND RAN APU WITH PNUEMATIC LOADS. OPERATIONAL CHECK OK WITH NO MESSAGES OR AUTO SHUTDOWNS.Aug 28, 1997 · N534UA · Boeing 757222SDR AWXA9700416Bleed Valve · leakingFLIGHT ATTENDANTS REPORTED LOUD BANG AND ACCOMPANYING VIBRATION IN AFT GALLEY AREA. FUMES IN AFT GALLEY. ASSOCIATED LEFT DUCT LEAK LIGHT ILLUMINATED IN COCKPIT. FOUND APU BLEED VALVE LEAKING, RESECURED. OPS CHECK GOOD.Jul 22, 1997 · N901AW · Boeing 7572S7SDR USAAF97052Swivel Joint · leakingRDU/CLT - FLT 1614 - ON APPROACH TO CLT, APPROXIMATELY 15 MILES FROM AIRPORT, APU FIRE WARNING ILLUMINATED, ALONG WITH AUTOMATIC APU SHUT DOWN AND FIRE BOTTLE DISCHARGE. CAPTAIN DECLARED AN EMERGENCY. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUNJun 26, 1997 · N882US · Fokker F28MK0100SDR 9711446739Packing · leakingDURING GROUND OPERATION, THE APU FIRE WARNING ACTIVATED. FLIGHT CREW FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES AND DISCHARGED THE FIRE BOTTLE. REPLACED PACKING ON THE AIR INLET ANTI-ICE DUCT, OPERATIONAL CHECK GOOD.Jun 11, 1997 · N639US · Boeing 747251FSDR COMA9760105Lcv · malfunctionAFTER TAKEOFF, THE APU LCV WOULD NOT CLOSE. REPLACED THE APU LCV.May 26, 1997 · N943CA · Cndair CL6002B19SDR 97UAL900386Duct · leakingAPU INOP. ON TAKEOFF ROLL FIRE WARNING SOUNDED. CREW ABORTED TAKEOFF AND EMPTIED BOTH FIRE BOTTLES. *S/D* REPLACED APU FIRE BOTTLES, SQUIB, AND YELLOW DISCHARGE DISK. REPLACED FORWARD CLAMP AT LOAD CONTROL VALVE DUE TO EXCESSIVE LEAKAGE. PERFORMED SUCCESMay 22, 1997 · N307UA · Boeing 737322SDR DLM88970777Apu Bleed Syst · odorCOCKPIT AND CABIN HAS ODOR OF RAW JET FUEL. MINOR DURING CLIMB, MINIMUM IN CRUISE AND EXCESSIVE DURING DESCENT. POSSIBLE LEFT SIDE. CHANGED WATER SEPARATOR BAG ON LEFT PACK. OPS CHECKS OK. FOUND APU AT FAULT. INOP APU AND FWD TO MCO AND PLAC.Apr 27, 1997 · N951DL · Doug MD88SDR DLL10970637Apu · fumesSTRONG SMELL OF OIL OR HYD FUMES IN CABIN DURING TAKEOFF AND AGAIN ON APPROACH. MOST NOTICEABLE IN AREA OF 3L STRONG ENOUGH TO CAUSE NOSE AND EYE IRRITATION. FOUND FUMES COMING FROM APU FWD APU TO MCO/PLAC PER MEL APU INOP.Apr 9, 1997 · N725DA · Lkheed 10113851SDR DLM88970627Apu · contaminatedATB OIL SMOKE SMELL IN CABIN. FOUND RESIDUAL OIL IN APU INLET. FWD APU TO MCO. RAN ENGINES, NO OIL SMELL NOTED.Apr 6, 1997 · N917DE · Doug MD88SDR DLM88970527Apu · contaminatedFOUND APU INLET SOAKED WITH DE-ICING FLUID AND OIL MIX. DURING TAKEOFF DUCTS GOT HOT CAUSING BURNING SMELL IN CABIN. INOP APU.Mar 21, 1997 · N924DL · Doug MD88SDR 97UAL900178Check Valve · damagedAIRCRAFT RETURNED TO BLOCKS WITH LOUD BANGING NOISE. FOUND VIBRATION IN DUCTING FROM LEFT PACK TO THE APU. *S/D* LOUD BANGING AND FLAMES OUT OF EXHAUST WHILE MOTORING APU. FOUND .125 INCH DIAMETER OVAL HOLE IN APU CHECK VALVE (P/N 3202610-4). APU REPLACEDMar 5, 1997 · N779UA · Boeing 777222SDR PCAA9700335Apu Bleed · malfunctionedUNKNOWN SOURCE OF SMOKE FILLED COCKPIT AND CABIN SHORTLY AFTER TAKEOFF FROM ISP. A/C RETURNED TO FIELD, ISP. MAINTENANCE INSPECTED AND FOUND APU MAKING POPPING NOISE WHEN BLEED IS SELECTED ON. INOP APU BLEED SYSTEM UNDER MEL, RAN A/C, OPERATED ENGINE BLEEDSJan 1, 1997 · N815EX · Dhav DHC8102SDR 97ZZZX41Peri Seals · wornPROBLEM: APU FIRE WARNING INFLIGHT. CORRECTIVE ACTION: REMOVED AND REPLACED 6 EACH PERI SEALS ON APU BLEED AIR DUCT.Nov 22, 1996 · N730TJ · Boeing 737291SDR MWEA96615Apu Bleed Air · smokingPILOT REPORTS ON GROUND WITH RT PACK ON AND APU AIR ON BOTH LT AND RT SIDE CABIN HAD SMALL AMOUNT OF SMOKE AND BOTH LAV SMOKE DETECTORS SOUNDED INTERMITTENTLY. REPLACED APU, OPS CHECK GOOD.Oct 15, 1996 · N700ME · Doug DC914SDR CALA9601471Apu · smokingAPU FILLS CABIN WITH SMOKE WITH AIR ON. PLACARD APU INOPERATIVE, REPLACE COALESCER BAGS, CLEAN APU COMPARTMENT AND PERFORMED BURN OUT OF DUCTING.Oct 15, 1996 · N16893 · Doug DC982SDR 96UAL900772Fan · damagedODOR IN CABIN. INBOUND CREW REPORTED OIL SMELL COMING FROM NR 1 OR NR 3 ENGINE. ISOLATED TO NR 3 BLEED. NO APU EXTERNAL LEAKS FOUND. REMOVED APU GENERATOR COOLING AIR DUCTS AND FOUND TO BE SOAKED WITH OIL. REPLACED APU COOLING FAN DUE TO LEAKING SEAL.Oct 4, 1996 · N1825U · Doug DC1010SDR 96UAL900742Bleed Syst · inoperativeAPU BLEED SYSTEM INOPERATIVE. WHEN APU BLEED SWITCH IS PLACED IN THE OFF POSITION, EGT RISES RAPIDLY AND PACKS TRIP.Sep 24, 1996 · N7453U · Boeing 727222SDR ASOA96037Bleed System · smokingSHORTLY AFTER TAKEOFF GPT-ATL, CREW SELECTED BLEED TO AUTO AND SHUT DOWN THE APU, THEN NOTICED A BUNRING SMELL IN THE COCKPIT. THE CREW SHUT OFF PACKS, BLEEDS, RECIRCULATION AND GASPER FANS. THE CAPTAIN DECLARED AN EMERGENCY AND RETURNED TO GPT WHERE LANDINGSep 8, 1996 · N214AS · Emb EMB120RTSDR USAAF96082Flex Duct · leakingGRR - FL 862 - UPON DESCENT INTO GRR, CREW RECEIVED APU FIRE WARNING. APU WAS AUTOMATICALLY SHUT DOWN AND THE FIRE BOTTLE DISCHARGED. FLIGHT CONTINUED TO GRR AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND NO EVIDENCE OF A FIRE. A BLEED AIR LEAK WAS Aug 1, 1996 · N887US · Fokker F28MK0100SDR 9615039945Bleed Air · leaking airDURING CLIMBOUT, PASSENGERS REPORTED A FUEL LIKE SMELL IN CABIN. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THAT APU WAS BLEEDING RESIDUAL OIL INTO AIR CONDITIONING SYSTEM, APU WAS CHANGED ON 10JUL96. REPLACED COALESCER BAGS, LEAKJul 11, 1996 · N8925E · Doug DC931SDR USAAF96029Multispeed Sw · failedCLT - FLT 729 - DURING CLIMB-OUT WITH ONE CSD ON MEL AND THE APU RUNNING, APU EXPERIENCED AN OVERSPEED AND SHUTDOWN. FLIGHT RETURNED TO CLT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE REPLACED THE MULTI-SPEED ELECTRONIC SWITCH. (X)Mar 18, 1996 · N494US · Fokker F28MK4000SDR CA960312021B-Nut · loose(CAN) APPROXIMATELY 1 MINUTE AFTER TAKEOFF, A POP WAS HEARD. AIRCRAFT LANDED BACK AT STAGING AREA. INVESTIGATION REVEALED GAS GENERATOR VENT LINE HAD COME UNDONE AT THE 'B' NUT. NUT WAS RE-INSTALLED AND TORQUED. GROUND RUN SUCCESSFULLY. AIRCRAFT RETURNED TO SEFeb 8, 1996 · Snias AS350BASDR CA960212002Apu · oil in air dist(CAN) AIRCRAFT RETURNED TO GATE DUE TO SMOKE IN CABIN AND FLIGHT DECK. CAUSE FOUND TO BE COMING FROM AIR CONDITIONING UNIT WHEN APU BLEED AIR USED. APU REPLACED.Feb 8, 1996 · Bag BAE146200ASDR CA961112012Valve · failed(CAN) CABIN PRESSURE STARTED TO CLIMB AFTER PASSING THROUGH 18,000 FEET. MAINTENANCE TROUBLESHOOTING REVEALED SWITCH ON APU BLEED VALVE (199H) FAILED IN THE OPEN POSITION. TEAR DOWN REPORT REQUESTED FROM FALCON JET FOR DEFECTIVE VALVE.Feb 7, 1996 · Amd FALCON200SDR AWXA96005Clamp · loosePHX-LAS - FLT 367 - CREW REPORTED, RATTLING NOISE UNDER SINK IN AFT LAV. MAINTENANCE FOUND APU BLEED DUCT CLAMP AND STANDOFF LOOSE. TIGHTENED CLAMP AND REPOSITIONED STANDOFF. (M)Jan 6, 1996 · N175AW · Boeing 73733ASDR P5CA9500062Duct · blownPRIOR TO TAKEOFF, APPLIED POWER AND WHEELWELL FIRE WARNING LIGHT CAME ON. LIGHT WENT OUT WHEN RETURNED TO IDLE, RETURNED TO BLOCKS. ON LEAK CHECK BY MAINTENANCE, APU SUPPLY DUCT BURST. INSTALLED BLOCKING PLATE AND PLACARDED APU INOPERATIVE.Jun 20, 1995 · N832FT · Boeing 747121SDR QXEA9500186Apu · smokingPDX - APU CAUSING SMOKE IN CABIN AND COCKPIT. APU REPLACED IAW MAINT MANUAL. APU OPS CHECKED GOOD ON GROUND. AIRCRAFT RETURNED TO SERVICE.Jun 19, 1995 · N450US · Fokker F28MK1000SDR WTAA950190Apu · smokingRNO - SMOKE ODOR REPORTED IN CABIN FROM LEFT PACK WITH AIRCRAFT ON GROUND. SMOKE ODOR NOT NOTED DURING FLIGHT OPERATION. MAINTENANCE DEFERRED APU BLEED AIR SYSTEM PER MEL 49-52-1. AIRCRAFT RETURNED TO SERVICE. (W)May 12, 1995 · N122AM · Emb EMB120RTSDR MWEA95177Thermostat · failedCREW REPORTS, ON GROUND WITH APU RUNNING AND RIGHT PACK ON, CABIN FILLED WITH SMOKE. MAINTENANCE REPLACED LOAD THERMOSTAT. ALSO, INSTALLED LOAD CONTROL VALVE. OPS CHECK GOOD, RETURNED AIRCRAFT TO SERVICE.Apr 21, 1995 · N202ME · Doug DC932SDR CAL950189Valve · inoperativeIAH - FLT 0126 - THE APU AUTO SHUT-DOWN DURING CLIMB-OUT AT 27,000 FEET. APU RESTART WAS UNSUCCESSFUL. THE AIRCRAFT WAS RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND APU LOAD CONTROL VALVE PARTIALLY OPEN DURING START AND UNDER NO LOAD.Mar 12, 1995 · N16893 · Doug DC982
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