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 CA020620001Duct · loose(CAN) CLIMBING THROUGH 18000FT, CSM ADVISED OF SMELL OF SMOKE IN CABIN. EMERGENCY DECENT, A/C RETURNED TO HER(GREECE) PASSENGERS COMMENTED THAT SIDE WALL PANELS AROUND ROW 25 - 30 WERE HOT. T/S REVEALED THAT CLAMP HOLDING APU BLEED DUCT HAD COME LOOSE, ALLOWINJun 19, 2002 · Airbus A320231SDR DL76G020372Odor · detectedRAN APU FOR 10 HRS FROM MADRID. AFTER LANDING SELECTED APU BLEED TO OPERATE BOTH PACKS. CABIN FILLED WITH THIN HAZE AND FLT ATT REPORT ELECTRICAL ODOR. RAN APU PNEU SYS, RAN BOTH PACKS WITH AND WITHOUT RECIRC FAN AND NO HAZE OR ODORS FOUND. APU PNEU SYS, OMar 25, 2002 · N154DL · Boeing 7673P6SDR DL764020364Duct · crackedAPU PNEUMATIC T-DUCT FOUND CRACKED. FLEET PROBLEM. REMOVED AND REPLACED DUCT. LEAK CHECKS NORMAL.Mar 23, 2002 · N829MH · Boeing 767432ERSDR QXEA0200506Control Valve · malfunctionedTUS - AIRCRAFT RETURNED TO FIELD WHEN CREW COULD NOT PRESSURIZE AIRCRAFT. MAINTENANCE FOUND THE LOAD CONTROL VALVE OF THE APU WOULD NOT CLOSE. MAINTENANCE RECONNECTED APU LOAD CONTROL VALVE. STARTED APU AND PACKS WITH NO DISCREPANCIES NOTED ON LOAD CONTROL Mar 20, 2002 · N601QX · Cndair CL6002C10SDR C2XA02IA074Apu · overservicedSHV- APU BLEED CAUSES SMOKE WHEN BOTH PACKS TURNED OFF. SHV- MAINTENANCE INSPECTED THE AIRCRAFT, AND, THE AIRCRAFT WAS RELEASED IAW MEL. IAH- MAINTENANCE REMOVED EXCESS OIL FORM APU TO OBTAIN THE PROPER SERVICE LEVEL,PERFORMED A OPERATIONAL CHECK OF THE Mar 18, 2002 · N16718 · Emb EMB120ERSDR C2XA02CL055Bleed Valve · wornCLE FLIGHT 3040 THE CREW REPORTED A STRONG FUEL SMELL IN THE COCKPIT WITH APU RUNNING WITH BLEEDS ON. MAINTENANCE INSPECTED AND REPLACED THE APU BLEED VALVE. OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.Feb 19, 2002 · N16944 · Emb EMB145ERSDR MALA020165Apu · contaminatedWHILE IN CLT: AFTER SELECTING PACK 1 AND 2 ON WITH APU AIR THE CABIN STARTED TO FILL WITH SMOKE. MAINTENANCE PERFORMED PACK BURN PROCEDURE IAW SUNDSTRAND AMM 1.4.2.1. NO SMOKE NOTED AFTER PROCEDURE.Feb 14, 2002 · N503XJ · Bac AVRO146RJ85ASDR P2EA2002M006Clamp · looseAPU FIRE LIGHT CAME ON IN FLIGHT. FIRE HANDLE PULLED AND FIRE BOTTLE DISCHARGED. LIGHT WENT OUT AFTER 10 MINUTES. FOUND AN APU BLEED AIR DUCT WITH LOOSE CLAMP THAT WAS BLOWING ON THE FIRE DETECTION LOOP. TIGHTENED CLAMP, OPS CHECKS NORMAL.Feb 10, 2002 · N239TA · Boeing 73725ASDR ASOA02069SSeal · wornDURING THE INITIAL APPROACH, THE CAPTAIN RECEIVED A (SMOKE TOILET) INDICATION. THE FLIGHT ATTENDANT VERIFIED SMOKE IN THE CABIN. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT LANDED SAFELY. THE SMOKE HAD DISSIPATED AT TIME OF LANDING. THE TEAR DOWN REPORT OF Feb 4, 2002 · N857AS · Cndair CL6002B19SDR PCAA0112172Duct · contaminatedLGA-FLIGHT 3909 CREW REPORTED OIL SMELL AND SMOKE INTERMITTENTLY COMING FROM BOTH APU BLEEDS ON GROUND AND ENGINE BLEEDS IN FLIGHT. MAINTENANCE VERIFIED OIL SMELL AND SMOKE FROM APU BLEED. RAN ENGINE BLEEDS, CLEARED TUBING OF OIL AND SMELL SUBSIDED. MEL 49Dec 24, 2001 · Dhav DHC8102SDR COMA0160799ApuFLIGHT #5790 - L/H AC PACK EMITS OILY SMELL WHEN APU BLEED SOURCE USED.COULD NOT DUPLICATE OPERATED L/H AND R/H AC PACKS ON APU AND NO SMOKE OR ODOR WAS NOTED.Oct 10, 2001 · N940CA · Cndair CL6002B19SDR USAASB01291Seal · tornCLT - FLT 1108 - EN ROUTE, WITH MEL 26-13 APPLIED. AT FL250, CREW WAS UNABLE TO MAINTAIN CABIN ALTITUDE WITH ONLY THE LT PACK OPERATING. OUTFLOW VALVE WAS IN THE CLOSED POSITION AND STANDBY OR MANUAL PRESSURIZATION MODE WAS NO HELP, CREW COULD NOT MAINTAIN COct 9, 2001 · N432US · Boeing 7374B7SDR P2EA2001M0001Connector · dirtyAIR-CONDITION AND MASTER CAUTION ON PRE-TAKEOFF RECALL WITH NO ASSOCIATED PANEL INDICATION. RETURNED TO GATE. SUSPECTED APU BLEED VALVE. OP'S CHECKED, GOT DUAL BLEED LIGHTS WITH APU BLEED SHUT OFF, PSI HELD, DUAL BLEED LIGHTS STAYED ON. BLEED VALVE OP'S NORSep 23, 2001 · N239TA · Boeing 73725ASDR ASOA01060Control Valve · malfunctionedON SHORT FINAL APPROACH FROM TLH TO ATL, CAPTAIN RECEIVED APU OVERHEAT MESSAGE. CAPTAIN BLEW THE FIRE BOTTLE AND DECLARED AN EMERGENCY. AIRCRAFT LANDED SAFELY IN ATL. MAINTENANCE REMOVED AND REPLACED THE FIRE BOTTLE, SQUIB AND APU LOAD CONTROL VALVE. OPERAMay 24, 2001 · N862AS · Cndair CL6002B19SDR 20010530CW005Duct · misalignedTHE FLEX COUPLER COULD NOT BE INSTALLED DUE TO THE MISALIGNMENT OF THE DUCT FROM THE APU GENERATOR AND THE EXHAUST DUCT ON THE RIGHT SIDE OF THE FUSELAGE.Apr 27, 2001 · N414DH · Israel GALAXYSDR 20010529CW002Duct · misalignedTHE FLEX COUPLER COULD NOT BE INSTALLED DUE TO THE MISALIGNMENT OF THE DUCT FROM THE GENERATOR AND THE EXHAUST DUCT ON THE RIGHT SIDE OF THE FUSELAGE.Apr 27, 2001 · N414KD · Israel GALAXYSDR AALA016043Apu · contaminatedLAX - AFTER LANDING STARTING APU CABIN FILLED WITH SMOKE, LIGHT IN COLOER AND NOT HEAVY. REPLACED SOCKS. OLD SOCKS WERE DAMP, NOT WET. INSTALLED TES9220 AND TES9338. REQS BURN OUT OF LT PACKS AND REPLACEMENT OF SOCKS AFTER BURN OUT SEE MM 21-20-02. PERFORApr 10, 2001 · N882RA · Doug DC983SDR SWIA972500Control Valve · failedON THE GROUND W/APU RUNNING, CABIN SMOKE DETECTOR IS ACTIVATED. ISOLATED SOURCE TO BE LEFT PACK. APU LOAD CONTROL VALVE CLOSED LIGHT ILLUMINATES WITH SWITCH IN OPEN POSITION. UPON TROUBLESHOOTING, FOUND VENTURI TUBE ASSEMBLY CRACKED. REMOVED AND REPLACED WApr 10, 2001 · N561SW · Emb EMB120ERSDR C2XA01IA178Apu · leakingIAH- APU BLEED PUTTING SMOKE IN CABIN AND LAV. MAINTENANCE REMOVED AND REPLACED THE APU ASSEMBLY IAW EMB145 MAINTENANCE MANUAL 49-10-01, LEAK AND OPERATIONAL CHECK GOOD AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.Mar 23, 2001 · N13949 · Emb EMB145LRSDR SIMA0771Valve · inoperativeORF - FLT 4971 - CREW REPORTED DURING CLIMB-OUT OF BOS, AN EXHAUST SMELL WAS NOTED IN FLIGHT COMPARTMENT AND IN CABIN. AIRCRAFT WAS LANDED IN ORF WITH NO FURTHER INCIDENTS REPORTED. MAINTENANCE REMOVED AND REPLACED THE APU BLEED VAVLE. OPERATIONAL CHECK WASMar 18, 2001 · N716AE · Emb EMB135LRSDR F3LA200100010Apu · odorPRIOR TO DEPARTURE, FLIGHT CREW REPORTED APU PRODUCED ODOR AND SMOKE IN CABIN DURING BLEED AIR OPERATION. MAINTENANCE ADDED OIL TO APU, OPERATED BOTH PACKS AND NO ODOR OR SMOKE WAS NOTED.Jan 25, 2001 · N316FL · Boeing 73736ESDR AALA20010013Smoke · detectedLAS - FLT 1204 - EN ROUTE LAS-DFW, SHORTLY AFTER APU START, DETECTED SMOKE IN CABIN. RETURNED LAS GATE WITHOUT FURTHER INCIDENT. RAN BOTH ENGINES. ACCOMPLISHED APU AND PACK BURNOUT PER THE MM. NO SMELL OR SMOKE NOTED. SYSTEM GROUND CHECKED NORMAL OPERATIOJan 1, 2001 · N234AA · Doug DC982SDR 20010207SG007Duct · crackedWHILE SERVICING APU FOUND A HOLE ABOUT 2 INCHES IN DIAMETER AND A CRACK ABOUT 3 INCHES LONG IN THE BLEED AIR TEE DUCT. REPLACED THE TEE DUCT PER MM 49-53-01, OPERATIONAL CHECKED OK. (M)Dec 4, 2000 · N523AT · Boeing 75723NSDR VNAA0011026Bleed Valve · failedWHILE LINED UP FOR TAKE OFF THE CREW RECEIVED A RIGHT HAND AND LEFT HAND PACK FAIL CAS MESSAGE. THE CREW CLEARED THE RUNWAY AND CONTACTED MAINTENANCE CONTROL. MAINTENANCE CONTROL DEFFERRED THE APU BLEED VALVE. FLIGHT 4035 THEN DEPARTED 20 MINUTES LATE WITH Nov 25, 2000 · N457PS · Dorner DO328100SDR A6WA200000064Service difficultySTRONG OIL SMELL IN CABIN WHEN APU AIR INTRODUCED INTO SYSTEM OK ON ENGINE AIR. MAINTENANCE PERFORMED CONTAMINATED DUCT CLEANING PROCEDURE. APU VACUUM TEST GOOD.Nov 7, 2000 · N612AW · Bag BAE146300ASDR SWAA001831Bleed Valve · erraticAIR TURNBACK, DURING CLIMBOUT LT DUCT PRESSURE WENT FROM 51 PSI TO 5 PSI & IN CRUISE IDLE LEFT DUCT PRESSURE WENT FROM 26 PSI TO 3 - 5 PSI. REMOVED AND REPLACED APU BLEED AIR VALVE AND APU BLEED AIR PRESS REG (P/N 108032-8) PER MM.Sep 23, 2000 · N614SW · Boeing 7373H4SDR UIEA00035Blanket · burnedDURING THE INSPECTION OF STRUCTURE BETWEEN STATION 2220 THROUGH 2360, THE INSULATION BLANKETS ON THE APU PNEUMATIC SUPPLY DUCT WERE FOUND WITH BURNED HOLES. THE P/N OF THE DAMAGED BLANKETS WERE CHECKED FOR CORRECT APPLICATION. THE CORRECT P/N WAS INSTALLED. Aug 21, 2000 · N534MC · Boeing 7472F6BSDR CA000808013Filter · loose(CAN) ON JULY 25, 2000 CREW REPORTED UPON SELECTION OF APU BLEED AIR ASSOCIATED INDICATOR. OF LOAD CONTROL VALVE OPENING HAD FAILED. A/C MAINT ENGINEER OPENED EXTERNAL AIR SOURCE PANEL ONLY TO FIND APU FAULT INDICATOR PANEL HAD MELTED. FURTHER INVEST. FOUND Jul 26, 2000 · Cndair CL6012A12SDR RAIA0007023Seal · failed6264-PHL- NUMBER ONE ENGINE BLEED LEAK EICAS MESSAGE ILLUMINATED. SELECT APU BLEED OFF, MESSAGE WENT AWAY. MAINTENANCE DEFERRED APU BLEED PER MEL. MAINTENANCE REPLACED APU BLEED AIR DUCT SEALS.Jul 25, 2000 · N808HK · Emb EMB145ERSDR DLM88000929Chip Detector · leakingAFTER TAKEOFF AT ELP BOTH AFT LAV SMOKE DETECTORS WENT OFF. FLIGHT ATTENDANT REPORTED UNIDENTIFIABLE SMELL. OPENED LAV DOORS AND ALARM SILENCED AFTER 1 TO 2 MINUTES. FOUND APU CHIP DETECTOR O-RING LEAKING. REPLACED SAME AND PERFORMED DUCT BURNOUT.May 10, 2000 · N971DL · Doug MD88SDR 2000UALA00203Duct · separatedGROUND CREW REPORTED THAT APU MADE A LOUD BANG. APU SOUNDED DIFFERENT AFTER THAT. THE CABIN FLOOR VIBRATED THEN THERE WAS SMOKE IN THE COCKPIT. *S/D* NO CAUSE REPORTED. DENVER LINE PERSONNEL REPLACED CLAMP AFTER FLOW MULTIPLIER BYPASS VALVE. OPERATIONALLApr 24, 2000 · N7286U · Boeing 727222SDR 2000UALA00110Duct · defectiveRETURNED TO LAX DUE TO A FAILED APU. *S/D* THE APU FAILED DUE TO A BLOWN DUCT. THE MANUFACTURER HAS REVISED THE WELDING AND REPAIR PROCESS TO PREVENT ANY RUPTURES ALONG WELDED SEAMS. THE APU BLEED TEE DUCT AND PACKING WERE REPLACED. OPERATIONS CHECK NORMAMar 4, 2000 · N549UA · Boeing 757222SDR AU000062Duct · cracked(AUS) APU BLEED AIR SUPPLY DUCT HOLED IN THE AREA LOCATED AFT OF THEREAR CARGO HOLD BETWEEN FRAMES NR 68 AND NO70. THE HOLE WASAPPROXIMATELY 9.525MM (0.375IN) IN DIAMETER AND LOCATED AT THE 6O'CLOCK POSITION AND WAS ASSOCIATED WITH AN AREA OF SEVERECORROSION IJan 14, 2000 · Airbus A320211SDR AWXA0000006Bleed Valve · malfunctionedAT ALT 33000, APU WAS TURNED OFF, OVERSPEED LT CAME ON, PLACED SW IN OFF OVERSPEED LT WENT OUT, LOW OIL PRESS LT CAME ON, 15 SEC LATER APU FIRE BELL SOUNDED, FIRE BOTTLE FIRED. FIRE INSPECTION AND WARNING TEST C/W NO DEFECT. REPLACED BOTTLE AND DISCHARGE DISJan 11, 2000 · N189AW · Boeing 737277SDR DL73K992555Bleed Line · leakingSOLID WING BODY OVERHEAT LIGHT PASSING 1,500 FT, AFTER TAKEOFF. AFTER COMPLETING PROCEDURES, LIGHT REMAINED ON. RETURNED TO DEPARTURE AIRPORT AND LANDED. A/C GROSS WEIGHT UPON LANDING 112,000 LBS. FOUND BLEED LEAK FWD OF APU BLEED VALVE. REPLACED GASKETSNov 20, 1999 · N325DL · Boeing 737232SDR AWXA9900352Apu · malfunctionedFAINT BURNING SMELL IN COCKPIT. T/S AIR CONDITIONING SYSTEM, DETERMINED TO BE APU BLEED. PLACED ON MEL 49-01, CNTL NR 121373.Oct 11, 1999 · N509DC · Boeing 73733ASDR JBXA9900104Bleed Valve · failedON CLIMB-OUT FROM RDU ON FLT 859, CREW REPORTED BLEED NR 1 AND 2 AND APU BLEED FAULTS. REMOVED AND REPLACED NR 2 HIGH PRESS BLEED VALVE IAW 36-11-00, OPS CHECK GOOD. ALSO, PERFORMED FUNCTIONAL CHECK FLT, ALL OPS CHECKED GOOD.Sep 9, 1999 · N105ML · Fokker F28MK0100SDR C2XA99CL064Apu · smokingCLE - FLT 4233 - THE CREW REPORTED THAT AFTER THEY STARTED THE APU, THEY GOT THE LAV AND BAGGAGE SMOKE WARNING ALONG WITH SMOKE IN THE REAR OF THE AIRCRAFT. MAINTENANCE INSPECTED THE APU AND PLACED IT ON MEL 49-00-00 CONTROL NR 18372B CAT 'C'. THE AIRCRAFT WAug 1, 1999 · N15932 · Emb EMB145SDR USAASB99144Valve · failedBWI - FLT2693 - EN ROUTE FROM ROC TO MCO, THE NR 1 ENGINE CSD LOW OIL PRESSURE LIGHT ILLUMINATED. CAPT ACCOMPLISHED QUICK REF HANDBOOK PROCEDURES AND DISCONNECTED THE NR 1 ENGINE CSD. CAPT THEN ATTEMPTED TO PUT THE APU ON LINE BUT, THE APU FAILED TO START. Jun 14, 1999 · N254AU · Boeing 737201SDR UPS99629765Thermocoupler · inoperativeINSPECTION TYPE:ETOP APU AIR INOP. *S/D* PERFORMED ECU BITE, FOUND NR 2 EGT LRU FAULT. REMOVED AND REPLACED RT SIDE THERMOCOUPLERS PER B767 MM 49-71-01 PAGE 401. APU CHECKS NORMAL.Jun 5, 1999 · N324UP · Boeing 76734AFSDR 99ZZZX2323Duct · crackedDURING PRE-FLIGHT, FOUND THE APU TEE DUCT FORWARD OF SURGE VALVE CRACKED. REPLACED TEE DUCT, REPAIRED THREAD INSERTS, OPS CHECKED NORMAL, NO LEAKS NOTED.Apr 15, 1999 · N519AT · Boeing 75723NSDR DLM88990602Inlet · contaminatedON CLIMBOUT, OILY SMELL OBSERVED WHILE ENGINE ANTI ICE IN USE. DISSIPATED AT ALTITUDE WHEN ANTI ICE TURNED OFF. FOUND OIL IN APU AIR INLET. CLEANED INLET, PERFORMED DUCT BURNOUT. REPLACED WATER SEPARATORS.Mar 20, 1999 · N916DL · Doug MD88SDR 99UAL900092Actuator · failedAPU WOULD NOT START IN THE AIR. *S/D* APU INLET DOOR ACTUATOR (R5365-1) FAILED. ACTUATOR WAS REMOVED AND REPLACED FEB 9,1999 AT IAD. OPS CHK OK. VENDOR ANALYSIS OF REMOVED UNIT INDICATED UNIT WAS COMPLETELY SEIZED. WATER WAS FOUND IN UNIT WHICH RESULTED IFeb 7, 1999 · N771UA · Boeing 777222SDR RAIA990106Apu · contaminatedORD - FLT 5788 - SMOKE IN COCKPIT AND CABIN. SMOKE WENT AWAY WITH APU OFF. MAINTENANCE RAN APU AND PERFORMED OPS CHECK OF ECS SYSTEM, DETERMINED TO BE GLYCOL IN APU INLET. (X)Jan 8, 1999 · N803HK · Emb EMB145SDR COMA9960016Check Valve · looseDURING C-CHECK, FOUND APU AIR SUPPLY CHECK VALVE UPPER PIN EXTREMELY LOOSE. REPLACED VALVE.Jan 8, 1999 · N983CA · Cndair CL6002B19SDR P2EA99001Valve · failedMSP - FLT 404 - DURAL BLEED INDICATION DURING TAKEOFF. ABORTED TAKEOFF AT 70 KNOTS, RETURNED TO GATE. DEFERRED PER MEL 36-6, CI M219725 ASSIGNED. FEF CI M219725. DUAL BLEED INDICATION INOPERATIVE. REPLACED APU LOAD CONTROL VALVE PER MM 49-52-11A, CLEARED Jan 7, 1999 · N219US · Boeing 737281SDR CA990311079Duct · chafed(CAN) EVIDENCE OF FOWLING BETWEEN STATIC AND APU BLEED DUCT IN THE AFT CARGO COMPARTMENT CAUSING DAMAGE TO INSULATION BLANKET AROUND STRENGTHENER OF DUCTING. FOUND ON TWO AIRCRAFT. PIPING REPLACED.Dec 24, 1998 · Boeing 75728ASDR COMA9860388Check Valve · failedAPU AIR SUPPORT CHECK VALVE MISSING SPRING. REPLACED VALVE.Dec 13, 1998 · N986CA · Cndair CL6002B19SDR 98UAL900581Pneumatic Syst · smokingCREW REPORTED TWO AFT SMOKE DETECTORS SOUNDING INTERMITTENTLY. *S/D* MAINTENANCE DETERMINED THAT THE CAUSE OF SMOKE IN CABIN WAS A RESULT OF PNEUMATIC SYSTEM OIL CONTAMINATION FROM THE APU. THE SUSPECT APU WAS REPLACED IN ORD ON 12/3/98. PACK BURNOUT WAS ANov 29, 1998 · N529UA · Boeing 757222SDR COMA9860367Valve · wornAPU AIR SUPPLY CHECK VALVE WORN AND FALLING OUT. REPLACED VALVE.Nov 21, 1998 · N926CA · Cndair CL6002B19
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