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 UIEA2020061001272Ecu · failedAPU DUCT PRESSURE SURGING EXCESSIVELY. REMOVED AND REPLACED APU ECU, IAW AMM / 49-61-05, OPS CHECKED GOOD.Jun 9, 2020 · N1499A · Boeing 767328SDR UIEA2020060501212Valve · failedNO APU BLEED AIR. REMOVED AND REPLACED VALVE APU BLEED AIR IAW AMM 49-52-00. OPS AND LEAK CHECKED OK.Jun 4, 2020 · N1499A · Boeing 767328SDR UIEA2020060801239Duct · damagedAPU AIR SURGES WHILE TRYING TO OPERATE BOTH PACKS ON THE GROUND. VISUAL INSPECTION CARRIED OUT IN APU COMPARTMENT AREA. HOLE FOUND IN DUCT CONNECTED TO SURGE CONTROL VALVE. OLD BROKEN DUCT REMOVED AND NEW ONE FITTED. OPS CHECK GOOD. REF AMM 49-53-01-004-001.Jun 3, 2020 · N641GT · Boeing 76738ESDR UIEA2020060201194Module · faultyAPU LOSS OF BLEED AIR PRESSURE. REMOVED AND REPLACED APU FLOW SENSING MODULE IAW AMM 49-53-08. TEST OK. THIS CLEARS MDDR 129149.Jun 2, 2020 · N1499A · Boeing 767328SDR UIEA2020060401188Surge Valve · faultyAPU PNEUMATIC FUNCTION INOP ( AUXILIARY POWER UNIT, PNEUMATIC FUNCTION )TRANSFERRED TO MDDR 129107 PER MEL 49-11-01-0,1 CAT "C", DUE 11JUN20 0710Z. CL PLACARDS INSTALLED. REMOVED AND REPLACED APU SURGE VALVE IAW AMM 49-53-01. THIS CLEARS MDDR 129107.May 31, 2020 · N1499A · Boeing 767328SDR UIEA2020052901155Warning System · false activationWHEN SELECTING APU BLEED VALVE FROM OFF TO ON FOR START, A MOMENTARY APU BLEED VALVE MESSAGE DISPLAYED, LASTED APPROXIMATELY TWO SECONDS AND CLEARED. PERFORMED TEST OF APU PNEUMATICS IAW AMM 36-00-00-862. PRESSURE NORMAL NO FAULTS NOTED AT THIS TIME.May 28, 2020 · N1427A · Boeing 767306SDR UIEA2020052101101Boot · damagedDAMAGE FOUND ON FLEX DOOR FOR APU DISCHARGE DUCT(<P>REMOVED AND REPLACED FLEX BOOT ON APU DISCHARGED DUCT IAW AMM 49-51-01.<BR /></P>)May 20, 2020 · N1409A · Boeing 767306SDR UIEA2020052001083Pneumatic System · inoperativeDURING L ENG START WHEN STARTER MOVED TO "GND" DUCT PRESS DROPPED TO ALMOST NOTHING, N2 NEVER SPOOLED UP TO MORE THAN 15%. DUCT PRESS WAS 30 PSI PRIOR TO THIS.(<P>SWAPPED ECU WITH KNOWN GOOD PART, OPS CHECK BAD. RETURNED AIRCRAFT TO ORIGINAL CONFIG. TRANSFERREMay 19, 2020 · N1709A · Boeing 767375SDR UIEA2020052001092Unknown · malfunctionedAPU NO DUCT PRESS FOR START.(<P>RESTARTED APU, REGAINED APU DUCT PRESSURE, MOTORIZED ENG #2 AS PER AMM 49-11-00, OPS CHECK GOOD.<BR /></P>)May 18, 2020 · N1511A · Boeing 767383SDR UIEA2020050800938Bleed Valve · inoperativeAPU PNEUMATIC INOP.(<P>TRANSFERRED TO MDDR 127865 IAW DDG 49-11-01A, CAT 'C', DUE 13MAY20.</P><P>LOG PAGE 1150403: REMOVED AND REPLACED APU BLEED VALVE IAW 767 AMM 36-11-1 AND OPS CHECK IS GOOD AT THIS TIME. THIS CLEARS DMI #127865.</P>)May 3, 2020 · N1489A · Boeing 76731KSDR UIEA2020050400938Pneumatic System · inoperativeAPU PNEUMATIC INOP.(<P>TRANSFERRED TO MDDR 127865 IAW DDG 49-11-01A, CAT 'C', DUE 13MAY20.</P>)May 3, 2020 · N1489A · Boeing 76731KSDR AALA202004139001Cooling Fan · odorAIRCRAFT WAS GROUNDED: ODOR EVENT OIL MIST PRONOUNCED DURING DESCENT WITH ENG HP VALVES OPEN. REMOVED AND REPLACED APU COOLING FAN PER AMM 49-52-51. ALSO SEE AALA202004139005.Apr 11, 2020 · N754UW · Airbus A319112SDR UIEA2020040600703Module · faultyAPU BLEED AIR INOP ( AUXILIARY POWER UNIT, PNEUMATIC FUNCTION )(<P>TRANSFERRED TO MDDR 126636 IAW MEL 49-11-01-01, CAT 'C'.</P><P>12APR, LP 1149777, ITEM M3: TROUBLESHOOT APU PNEUMATIC PRESSURE IAW FIM 36-10 FAULT TREE 841 UP TO SHEET 2 BLOCK 35 & FIM 49-11 FAApr 3, 2020 · N1381A · Boeing 767316SDR UIEA2020040200678Modulating Valve · faultyWHEN ATTEMPTING TO START ENG, THERE WAS NOT ENOUGH PSI FROM APU. PSI WAS AT 15 AND EVEN IF YOU TURNED ON PACK PSI WOULD DROP TO 8 PSI OR LESS.(<P>APU WAS TRANSFERRED TO MDDR 126566 IAW MEL 49-11-01A, CAT C, DUE DATE 12APR20, DISPATCH ACL 0532Z.</P><P>LOG PAGE Apr 2, 2020 · N1381A · Boeing 767316SDR UIEA2020040300681Bleed Air Sys · malfunctionedDURING ENGINE START, APU WOULD ONLY MAKE 21 PSI DUCT PRESSURE. START WAS NORMAL.(<P>PERFORMED #1 AND #2 ENGINE RUNS (INDEPENDENT) WITH APU, BOTH ENGINE STARTS NORMAL. NO FAULTS, APU PRESSURE +30 PSI, REF AMM 71-00-00/501. OPS CHECK GOOD.</P>)Apr 2, 2020 · N1427A · Boeing 767306SDR UIEA2020040200679Bleed Air Sys · malfunctionedDUCT PRESSURE FOR BOTH ENGINE STARTS WAS 15 PSI, MAX MOTORING TO BOTH STARTS WAS 18% N2, BOTH ENGINE STARTS NORMAL BUT TOOK LONGER THAN USUAL.(<P>DEFERRED APU BLEED AIR SYSTEM IAW ATLAS DDG 49-11-01-01, MDDR 126571, CAT "C".</P>)Apr 2, 2020 · N1709A · Boeing 767375SDR P5CA2020033100137Control Valve · faultyAPU DOES NOT INCREASE PNEUMATIC PRESSURE ON ENGINE START.(<P>TRANSFERRED APU PNEUMATIC FUNCTION TO DMI 126477 PER B767 DDG 49-11-01-01, CAT "C" DUE 10APR2020.</P><P>REF LOG PAGE 1232005 ITEM M4: REMOVED AND REPLACED SURGE CONTROL VALVE IAW AMM 49-53-01. OPS TEMar 30, 2020 · N642GT · Boeing 7673Y0SDR HALA2020032400070Bleed Valve · malfunctionedETOPS SIGNIFICANT SYSTEM - AIR APU BLEED FAULT. // NO CURRENT FAULT SHOWING CYCLED APU BLEED WITH APU RUNNING WITH NO FAULT APU BLEED VLV HAS 4 PREV LAST LEG FAULTS RPLCD APU BLEED VLV AS PRECAUTION PER A330 AMM 49-51-51. A/C OK FOR SVC.Mar 23, 2020 · N391HA · Airbus A330243SDR UIEA2020031900496Unknown · malfunctionedNO DUCT PRESSURE WITH APU ON.(<P>PERFORMED APU EXRCRAL WAIT BITE TEST, NO FAULTS SHOWN. APU RESTARTED, APU BLEED OPERATES OK AS PER AMM 49-61-05-742-027.<BR /></P>)Mar 18, 2020 · N1373A · Boeing 76731KSDR UIEA2020031900489Module · faultyAPU AUTO SHUTDOWN (PRIOR TO DEPARTURE).(<P>APU PLACED ON DEFERRAL (DDG 49-11-01A), MDDR 125904, CAT 'C'.</P><P>LOG PAGE 1130021: REMOVED AND REPLACED FLOW CONTROL SENSOR MODULE IAW AMM REF 49-53-04, OPS CHECK GOOD. DMI 125904 CLEARED, PLACARDS REMOVED.</P>)Mar 17, 2020 · N1487A · Boeing 76731KSDR UIEA2020031700453Bleed Air Sys · malfunctionedPRIOR TO BLOCKOUT APU BLEED PRESSURE DROPPED TO 5 PSI. UNABLE TO CLEAR AFTER RE-STARTING APU (SAME ISSUE EXISTS).(<P>PERFORMED AUX POWER CONTROL UNIT BITE TEST IAW AMM 49-61-05. RESTART OF APU OPS NORMAL WITH 30PSI WITH PACKS RUNNING.</P>)Mar 14, 2020 · N1229A · Boeing 767306SDR UIEA2020031000398Surge Valve · faultyAPU FAULT REVERSE FLOW APU INOP.(<P>TRANSFERRED TO DMI 125491 PER MEL 49-11-01A, CAT 'C'.</P><P>LP 1208396 ITEM M9: REMOVED AND REPLACED APU SURGE CONTROL VALVE IAW AMM 49-53-01, OPS CHK AND LEAK CHK GOOD. THIS CLEARS DMI 125491.</P><P>LP 1208395: WHEN DOING TMar 7, 2020 · N1399A · Boeing 767306SDR A6WA2020022847207Solenoid Valve · failedPILOT REPORTS APU FAILED TO START ON DESCENT FAILED TO LIGHT. AFTER 2ND ATTEMPT THERE WAS A STRONG FUEL SMELL IN AIRCRAFT. FUEL SMELL WENT AWAY AFTER THEY SHUT IT DOWN. FOUND COALESCER TO BE CONTAMINATED DUE TO APU START FAILURE. C/W AWAC SUP 09-037C. APU OPFeb 27, 2020 · N470ZW · Cndair CL6002B19SDR UIEA2020020600198Sensor · inoperativeAPU PNEUMATICS INOP (AUXILIARY POWER UNIT, PNEUMATIC FUNCTION)(C/W DDG PROCEDURE 36-11-04)(<P>TRANSFERRED TO MDDR #124303 IAW DDG 49-11-01-01. MX ACTION C/W, CAT 'C', DUE 14FEB20. MCC GLEN NOTIFIED. PLACARDS INSTALLED.</P><P>LOG PAGE 1190476: REMOVED AND REPLFeb 4, 2020 · N1709A · Boeing 767375SDR UIEA2020020310162Warning Message · false activationON BOTH ENG STARTS, DUCT PRESS DROPPED TO AROUND 20 PSI AND N2 MAXED AT 19% BEFORE RUN SWITCHES ENGAGED.(<P>PERFORMED FAULT ISOLATION MANUAL 49-11 FAULT TREE 982 FOR LOW DUCT PRESSURE IN MAIN ENGINE START MODE ONLY. FOUND NO LOW PRESSURE OR SURGING. FOUND NO FFeb 1, 2020 · N1709A · Boeing 767375SDR UIEA2020011600073Air Duct · crackedNOTED EXTERIOR BLEED AIR NOISE COMING FROM LEFT MAIN GEAR DOOR AREA. FOUND CRACK AT FLANGE IN APU BLEED AIR DUCT. REMOVED AND REPLACED APU BLEED AIR DUCT ELBOW FWD OF APU SOV (CTR ISOL VLV), CHECKED FOR AIR LEAKS. NO AIR LEAK NOTED. REF AMM 20-11-00.Jan 14, 2020 · N1181A · Boeing 7673Y0SDR P5CA2020011300011Apu · failedDUCT PRESSURE WENT TO ZERO AND SHORTLY AFTER APU AUTO SHUTDOWN AT THE GATE. REMOVED AND REPLACED THE APU ASSEMBLY. PERFORMED OPS CHECK, NORMAL. NO FAULTS FOUND ON BITE PROCEDURE IAW AMM 49-11-01.Jan 11, 2020 · N647GT · Boeing 767306SDR HALA2020010870005Bleed Valve · malfunctionedETOPS SIGNIFICANT SYSTEM - FOUND MAINT MSG "APU BLEED FAULT" ON UPPER ECAM, WHEN APU BLEED SW TURNED "ON". // REPLACED APU BLEED VALVE REF A330 AMM 49-51-51. OPS CK NML.Jan 7, 2020 · N385HA · Airbus A330243SDR UIEA2019122306136Duct · damagedFWD APU AIR SURGE DUCT FOUND TO HAVE HOLE IN DUCT. REMOVED AND REPLACED FWD APU AIR SURGE DUCT IAW AMM 49-53-01. LEAK CHECK GOOD AT THIS TIME.Dec 21, 2019 · N1997A · Boeing 76733ASDR UIEA2019122306135Pneumatic System · malfunctionedAPU PNEUMATIC INOPERATIVE. PERFORMED PACK CONTROLLER BITE IAW AMM 21-51-14, NO FAULTS FOUND. PERFORMED APU BITE IAW FIM 49-11 FT 987, NO FAULTS FOUND. MONITORED APU WITH PACKS ON FOR TWO HOURS, NO ISSUES. OPS CHECK GOOD IAW AMM 49-11-00.Dec 20, 2019 · N1487A · Boeing 76731KSDR HALA2019121700517Warning Message · false activationETOPS SIGNIFICANT SYSTEM - AFTER LANDING ECAM - AIR APU BLEED FAULT. // BMC BITE TEST 1 AND 2 C/OUT IAW AMM 3611-00. SUBSEQUENT OPS CHECK NOW NORMAL, MSG SELF ERASED.Dec 15, 2019 · N379HA · Airbus A330243SDR UIEA2019121306066Duct · damagedFOUND SURGE VALVE DUCT DAMAGED.(<P>REMOVED AND REPLACED DUCT IAW B767 AMM 49-53-01, OPS CHECK GOOD. <BR /></P>)Dec 12, 2019 · N1427A · Boeing 767306SDR UIEA2019120535990Bleed Air Sys · surgesAPU AIR SURGING UP AND DOWN WITH PACKS RUNNING. PERFORMED APU WIRE PROCEDURE PER FIM 49-11 FT 987 AND NO FAULTS CODE FOUND.Dec 3, 2019 · N1487A · Boeing 76731KSDR ASAA2019112291404Warning Message · false activationAPU BLEED FAULT GROUNDED - YES. ACCOMPLISHED OPERATIONAL TEST OF APU BLEED PER AMM 36-12-00-710-001-A OPS CK GOOD, OK FOR SERVICE A&P 4238317Nov 19, 2019 · N930VA · Airbus A321253NSDR UIEA2019112095932Transducer · failedAPU INOP.(<P>TRANSFERRED TO MDDR #120796 PER MEL 49-11-01A, CAT 'C,' DUE DATE: 28NOV19. MCC NOTIFIED AND PLACARDS INSTALLED.</P><P>LP 1113302 - M4: STARTED APU AND PERFORMED BITE TEST, NO FAULTS NOTED. RAN L AND R PACKS, AND WITH LT PACK ONLY ON, THE DUCT PRESNov 18, 2019 · N1487A · Boeing 76731KSDR DALA2019111806740Apu · contaminatedCPT SIDE AFT LAV SMOKE DETECTOR ACTIVATED SHORTLY AFTER T.O. LASTED A FEW SECONDS THEN WENT OFF. NO OTHER INDICATIONS OR SIGNS OF SMOKE. FOUND APU INLET CONTAMINATED WITH OIL. SUSPECT ACCESSORY OIL DRAIN. REMOVED AND REPLACED APU REF AMDS W/C 4900-2121. OPS ANNov 17, 2019 · N975DL · Doug MD88SDR HALA2019111200480Bleed Valve · unknownETOPS SIGNIFICANT SYSTEM - ECAM: AIR APU BLEED FAULT --UPON TURNING ON APU BLEED WHEN PULLING IN TO GATE. // REMOVED AND REPLACED APU BLEED VALVE PER AMM 49-51-51. REPLACED BLEED VALVE FILTER PER AMM 49-51-51-960-801-A. CHK OK. NO DEFECTS NOTED. OK FOR SERVINov 11, 2019 · N390HA · Airbus A330243SDR UIEA2019111295873Bleed Air Sys · unknownAPU BLEED AIR LOW PRESSURE WITH BOTH PACKS ON.(<P>TRANSFERRED APU TO DMI 120377 IAW DDG 49-11-01A, CAT 'C', DUE: 19-NOV-19.</P><P>LP 1232397 - M5: ACCOMPLISHED B767 FIM 49-11 FAULT TREE A08, NO FAULTS NOTED. THIS CLEARS DMI 120377. PLACARDS REMOVED AND MCC NOTNov 9, 2019 · N1229A · Boeing 767306SDR UIEA2019110105832Bleed Air Sys · malfunctionedAPU DOES NOT MAKE ADEQUATE PRESSURE FOR ENGINE START. (<P>PERFORMED POWERPLANT NORMAL OPERATION PROCEDURE PER AMM 71-00-00-862 AND FOUND NORMAL APU BLEED PRESSURE (30PSI) UPON ENGINE START. APU OPS TEST GOOD PER AMM 49-00-00. </P>)Nov 1, 2019 · N1229A · Boeing 767306SDR UIEA2019103105822Apu · inadequateAPU WOULD NOT PRODUCE AIR PRESSURE FOR ENGINE START (USED PUFFER CART FOR START). (<P>TRANSFERRED TO MDDR #119929 IAW MEL 49-11-01-01, CAT 'C', DUE DATE: 10-NOV-19. MAINT PROCEDURES FOLLOWED. PLACARD INSTALLED AND MCC NOTIFIED.</P><P>LP 1231413 - M6: REMOVED Oct 31, 2019 · N1373A · Boeing 76731KSDR UIEA2019103005819Unknown · malfunctionedAPU INOP; LOW DUCT PRESSURE.(<P>TRANSFERRED TO MDDR 119894 IAW MEL 49-11-01A, CAT 'C', DUE DATE 09-NOV-19.</P><P>LP 1075747 - M9: PERFORMED APU BITE TEST IAW AMM 49-61-05. NO FAULTS DISPLAYED ON ANY OF THE LEGS. PERFORMED AIR SUPPLY BITE IAW 36-23-01, NO FAULTOct 30, 2019 · N1427A · Boeing 767306SDR UIEA201910315812Unknown · unknownAPU DUCT PRESSURE VERY LOW WITH AIR DRAW.(<P>PERFORMED BITE OF APU IAW FIM 49-11 F/T 987, NO FAULTS NOTED. STARTED APU AND PUT LOAD ON IT IAW AMM 49-11-00, OPS CHECK NORMAL AT THIS TIME.</P>)Oct 30, 2019 · N1229A · Boeing 767306SDR AALA201911029010O-Ring · defectiveAIRCRAFT WAS GROUNDED: STRANGE ODOR (LIKE BURNING PLASTIC) FOUND THROUGHOUT INTERIOR OFAIRCRAFT UPON CREW ARRIVAL. REMOVED APU COOLING FAN, REPLACED O-RINGS, REFERENCE IPC 49-52-09-1, ITEMS 80 & 100. REINSTALLED APU COOLING FAN. OPS CHECK GOOD, NO LEAKS NOTED.Oct 29, 2019 · N559UW · Airbus A321231SDR IPXA2019103048466Pneumatic System · inoperativeINSPECTION TYPE:N/AAFTER INITIAL APU START, APU WOULD NOT SUPPLY PNEUMATIC AIR, APU OPERATION NORMAL AFTER SHUTDOWN & RESTARTED IAW AOM PROCEDURE.ACCOMPLISHED APU BITE PER FRMFIM 49-11-00-815-803. NO FAULTS NOTED, OK FOR FLIGHT.Oct 29, 2019 · N309UP · Boeing 76734AFSDR UIEA2019102805801Gasket · failedAPU INOPERATIVE, NO DUCT PRESSURE. PERFORMED IGU PUSH PULL TEST OF APU IAW FIM 49-11 FAULT TREE 975 AND FOUND LESS THAN 2 PDS FORCE REQUIRED. ALSO, REMOVED AND REPLACED FLOW SENSE VALVE GASKET IAW AMM 49-53-08 AND SURGE CONTROL VALVE AFT RUBBER DUCT IAW AMMOct 26, 2019 · N1619A · Boeing 7673Y0SDR GTIA2019102424721Duct · contaminatedPLANE CABIN SMELLS OF DEAD FISH/SEWAGE-T/S IAW TSM 05-50-00-810-831-A. FOUND OIL PUDDLE(SMALL) BEHIND APU INLET. CLEANED AREA, INSPECTED APU BLEED DUCT, FOUND NO OIL RESIDUE. PERFORMED PACK BURNOUT FOR #1 AND #2 PACKS IAW AMM 21-00-00. BURNOUT WAS GOOD.LEAK CHOct 22, 2019 · N634NK · Airbus A320232SDR UIEA2019102215770Module · malfunctionedWITH APU ON, PAX AIR FLUCTUATION; WITH L/H, R/H OR BOTH PAX SELECTED (APU PNEUMATIC FUNCTION INOP).(<P>TRANSFERRED TO MDDR #119418 IAW DDG 49-11-01-01A, CAT 'C', DUE DATE 30-OCT-2019. MAINT ACTION C/W. </P><P>LP 1097264 - M5: T/S APU BLEED IAW FIM 49-11 FT 958Oct 20, 2019 · N1489A · Boeing 76731KSDR UIEA2019102285751Bleed Air Sys · fluctuatesAPU BLEED PRESSURE FLUCTUATED BETWEEN 15 AND 22 PSI PRIOR TO START WITH NO LOAD.(<P>PERFORMED BITE TEST OF PNEUMATIC SYSTEM IAW AMM 36-23-00, NO FAULTS FOUND. OPS CHECKED APU AIR IAW B767 AMM 36-00-00.</P>)Oct 18, 2019 · N645GT · Boeing 767324SDR UIEA2019101085676Shutoff Valve · inoperativeL ENG START EICAS; 2 ATTEMPTS, NO START. (APU PNEUMATIC INOPERATIVE. REMOVED AND REPLACED APU BLEED AIR SHUTOFF VALVE IAW AMM 36-11-10. OPS AND LEAK CHECKED GOOD.Oct 8, 2019 · N1381A · Boeing 767316SDR UIEA2019101195688Duct · damagedAPU FLEXIBLE DUCT BEHIND SURGE VALVE HAS HOLE IN IT.(<P>REMOVED AND REPLACED APU SURGE VALVE DUCT RUBBER SLEEVE REF AMM 49-52-00, LEAK CHECKS OK. <BR /></P>)Oct 8, 2019 · N662GT · Boeing 76731A
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