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 UIEA2019031403532Module · faultyAPU RELIABILITY COLD SOAK START ATTEMPTED LEG CVG - ONT SAT -33C FL 360 , UNSUCCESSFUL AFTER 3 ATTEMPTS (<P>NOTED BY MX , REF LOG PAGE 1069052 ITEM 3 TRANSFERRED TO MDDR # 108569 AS PER MEL 49-11-01A CAT C </P><P>LOG PAGE 1069053 PERFORMED APU BITE TEST IAW FIMar 13, 2019 · N1229A · Boeing 767306SDR UIEA2019031103514Control Valve · faultyAPU AIR INOP(<P>TRANSFER TO MDDR 108395 IAW DDG 49-11-01-01 CAT C DUE DATE 18-MAR-19</P><P>LP 1068880: R&R FLOW SENSING MODULE P/N 3885081-1, S/N 6524 PER AMM 49-53-08. OPS CHECK GOOD, DUCT PRESSURE RESENT TO EXPECTED LIMITS. APU STILL GOES INTO AUTO SHUT DOWNMar 8, 2019 · N1381A · Boeing 767316SDR GTIA2019030303205Bleed Air Sys · contaminatedSTRONG MUSTY DE ICE ODOR WHEN APU BLEED TURNED ON-PERFORMED ENG. 1 & 2 RUNS IAW AMM 71-00-00. T/S IAW TSM 05-50-00-810-831 IDENTIFICATION OF CABIN ODOR, FOUND GLYCOL FLUID SMELL TO BE COMING FROM APU BLEED.Mar 3, 2019 · N621NK · Airbus A320232SDR UIEA2019030203427Boot · damagedAPU DID NOT START AFTER LANDING THREE ATTEMPTS. (<P>FOUND SURGE VALVE BOOT DAMAGED, REPLACED BOOT IAW AMM 49-53-01. OPS CHECK GOOD AND APU STARTED ON FIRST ATTEMPT. </P>)Mar 1, 2019 · N1499A · Boeing 767328SDR UIEA2019022763392Module · failedAPU INOP. NO DUCT PRESSURE.(<P>TRANSFERED TO MDDR 107846. LP 1015204, WO 48189 COMPLIED WITH T/S PER B767 AMM 24-21-00 OPS TEST APU GENERATOR OK. AMM 36-23-00 AIR SUPPLY CONTROL SYSTEM BITE TEST OK,AMM AIR SUPPLY PRESSURE IND SYSTEM OPS TEST. LEFT DUCT PSI 31 Feb 25, 2019 · N1321A · Boeing 767306SDR UIEA2019022753374Gasket · failedAPU INOP.(<P>TRANSFER TO MDDR # 107814 IAW DDG 49-11-01A CAT C.REPLACED FLOW SENSING MODULE GASKET IAW B767 AMM 49-53-08/401. OPS CHECK NORMAL. NO MORE / LEAKS FOUND. </P>)Feb 24, 2019 · N662GT · Boeing 76731ASDR UIEA2019021903279Module · loosePNEUMATIC DUCT PRESSURE DROPS TO 5 PSI DURING ENGINE START.(<P>FOUND FLOW SENSING MODULE LOOSE: RE-SECURED FLOW SENSING MODULE IAW B767 AMM 49-53-08. PERFORMED OPS CHECK IAW B767 AMM 71-00-00-862. OPS CHECK GOOD.<BR /></P>)Feb 19, 2019 · N662GT · Boeing 76731ASDR ANCF2019021801Transducer · faultyFEB 18. DURING DESC TO SKPS THE APU BLEED ON ECAM APPEARS AIR APU BLEED FAULT. CORRECTIVE ACTIONS: FEB 18. IN ACCORDANCE WITH MEL 36-12-01 CAT "C" THIS REPORT IS DEFERRED TO DMI W/O:2130037 CNMCC-2019-AV0925 FEB 21. IN ACCORDANCE WITH TSM 36-12-00-810-801-A FAFeb 18, 2019 · N592EL · Airbus A318111SDR QXEA2019021900071Apu · odorDURING BOARDING APU SELECTED BL AIR, SMELT SMOKE, FLT COMP TEMP INCREASING, FLT COMPT PACK HOT MASTER CAUTION RAN EA CHECKLIST ( APU BLEED AIR SYSTEM INOP ). PLACED ON MEL. RETURNED TO SERVICE.Feb 18, 2019 · N445QX · Bombdr DHC8402SDR AALA201902209009Duct Seal · leakingDURING SHUT DOWN, FLIGHT ATTENDANT REPORTED A STRONG, DIRTY SOCK ODOR IN THE AFT CABIN. THE ODOR WAS ALSO NOTICED DURING FLIGHT AT CRUISE NEAR AFT LAVATORY. THE AIRCRAFT WAS GROUNDED. MAINTENANCE REPLACED THE APU BLEED DUCT SEAL BELOW SEAT ROW 24 IAW AMM Feb 17, 2019 · N185UW · Airbus A321211SDR UIEA201902253225Shutoff Valve · inoperativeAPU PNEUMATIC FUNCTION INOPERATIVE. REMOVED AND REPLACED THE APU SHUTOFF VALVE IAW AMM 36-11-10. OPS CHECKED IAW AMM 36-11-10.Feb 15, 2019 · N1321A · Boeing 767306SDR UIEA2019021903273Warning Message · false activationAPU BLEED VALVE ADVISORY MSG. COMPLIED WITH QRH.(<P>OPERATED APU SEVERAL TIMES AND APU BLEED AIR SYSTEM. OPS CHECKS GOOD PER AMM 49-11-00. NO MSG.<BR /></P>)Feb 15, 2019 · N1499A · Boeing 767328SDR UIEA2019021853231Filter · not reportedAPU AIR INOP.(<P>TRANSFERRED TO MDDR #107318 PER 49-11-1-1<BR /></P><P>REMOVED AND REPLACED APU SURGE VALVE FILTER IAW B767 AMM 49-53-06 OPS CHECKED NORMAL, NO LEAKS FOUND. APU AIR PARAMETERS NORMAL DURING ENGINE START/RUN. THIS CLEARS MDDR 107318, PLACARD REMFeb 14, 2019 · N662GT · Boeing 76731ASDR UIEA2019020803150Valve · inoperativeAPU DOES NOT PUT OUT PNEUMATIC AIR (<P>TRANSFERRED TO MDDR # 107059 AS PER MEL 49-11-01A CAT C </P><P>LOG PAGE 0966419, ITEM M4: REPLACED FAULTY DUCT AFT OF SURGE VALVE IAW B767 AMM 49-55-01. OPS CHECK GOOD. THIS CLEARS DMI# 107059, MCC NOTIFIED. PLACARD REMOVFeb 7, 2019 · N1511A · Boeing 767383SDR UIEA2019020653106Unknown · unknownAFTER PUSH BACK APU DUCT 0 PSI(<P>TRANSFERRED TO MDDR 106938 MEL 49-11-01A CAT C DUE DATE 15FEB1</P><P>LP 1054241-M10 PERFORMED OPS CHECK OF APU IAW AMM 49-41-01 DUCT PRESSURE OVER 25 PSI </P><P>CLEARED MDDR PLACARD REMOVED </P>)Feb 5, 2019 · N1373A · Boeing 76731KSDR UIEA2019020403101Unknown · fault messageON START APU DUCT PRESSURE 21PSI DOES NOT REACH MAX MOTORING N2 AT 30 SECONDS NEEDS 50 SECONDS TO REACH MAX MOTERING.(<P>PERFORMED DRY MOTOR OF ENG #1 AND ENG #2 FOUND ALL VALUES TO BE WITHIN LIMITS PER B767 AMM 71-00-01-862-053-H03, NO FURTHER DEFECTS NOTED.<Feb 3, 2019 · N1321A · Boeing 767306SDR YENA201902020053Bleed Air Sys · odorFLT 177, BOS-LAS. FUMES SMELL OF MAGIC MARKER/DRY LATEX PAINT OCCURRED AFTER ENGINE START, T/O POWER TIL 6200', DESCENT 24000' TIL AND END. SORE THROAT, METALLIC TASTE IN MOUTH, HEADACHE, BURNING EYES. ENGINE RUN ACCOMPLISHED IAW MCC DIRECTION-NO ISSUES WITH Feb 2, 2019 · N929JB · Airbus A321231SDR IPXA2019012438257Bleed Air Sys · malfunctionedINSPECTION TYPE:ETOP AFTER LDG, STARTED APU NO BLEED PRESSURE. DEFERRED PER MEL 49-11-1-1, DMP 49-11-1-1 C/W. **ETOPS FILED OPEN**Jan 24, 2019 · N305UP · Boeing 76734AFSDR IPXA2019012438253Unknown · malfunctionedINSPECTION TYPE:ETOP APU AIR INOP ON PUSHBACK. ISSUED DEFERRAL MEL 49-11-1-1 DMP ACCOMPLISHED BY CAPT. **ETOPS FILED OPEN**Jan 23, 2019 · N302UP · Boeing 76734AFSDR UIEA2019012503025Filter Element · dirtyINTERMITTENT LOW \APU BLEED PRESSURE 21 PSI IS REQUIRED. OCCURED ON THE SECOND ENGINE START.(<P>REMOVED AND INSPECTED CLEANED SURGE VALVE FILTER ELEMENT IAW AMM 49-53-06, 26PSI. NO PACKS MINIMUM ENGINE START 25 PSI OK FOR SERVICE.<BR /></P>)Jan 23, 2019 · N1321A · Boeing 767306SDR UIEA2019012303010Bleed Valve · malfunctionedAPU AIR INOP.(<P>REPLACED APU BLEED VALVE PER AMM 36-11-10 DISPATCHER LC 1925Z.<BR /></P>)Jan 19, 2019 · N1381A · Boeing 767316SDR UIEA2019010700038Valve · faultyAPU INOP(<P>TRANSFERRED TO MDDR 105583 IAW MEL 49-11-01A CAT "C" DUE DATE 17JAN19. </P><P>LP 1023816 - M3: REMOVED AND REPLACED SURGE VALVE IAW AMM 49-53-01. OPS CHECK GOOD AT THIS TIME. THIS ACTION CLEARS DMI #105583. MCC NOTIFIED AND PLACARDS REMOVED. <BR />Jan 7, 2019 · N1321A · Boeing 767306SDR HALA2019010700006Warning System · false activationETOPS SIGNIFICANT SYSTEM - APU BLEED FAULT AFTER LANDING. RESET 3X SAME EFFECT. PER TSM 49-62-00-810-846 PERFORMED APU FUNCTION CHECK & APU BITE TEST. ALL TESTS PASS & NO CURRENT FAULTS. OK TO CONTINUE.Jan 6, 2019 · N384HA · Airbus A330243SDR HALA2019010400006Warning System · false activationETOPS SIGNIFICANT SYSTEM - APU BLEED FAULT AFTER LANDING. RESET 3X SAME EFFECT. PER TSM 49-62-00-810-846 PERFORMED APU FUNCTION CHECK & APU BITE TEST. ALL TESTS PASS & NO CURRENT FAULTS. OK TO CONTINUE.Jan 6, 2019 · N384HA · Airbus A330243SDR UIEA2018123102964Ecu · malfunctionedAPU INOP - (NOTE: PNEUMATIC PRESSURE OSCILATING WITH OR WITHOUT PACKS ON)(<P>APU DEFERRED IAW MEL 49-11-01A . R&R APU ECU OPS CHECK OK.</P>)Dec 31, 2018 · N1439A · Boeing 76733ASDR CALA2018123102689Duct · crackedF/A REPORTED BURNING SMELL BACK OF A/C AFTER BITING DUCT OVERHEAT SYSTEM, FAULT CODE 54, AFT BULKHEAD SECTION 48, FOUND DUCK CRACKED 5 INCHES AT ABOVE AFT BODY ACCESS PANEL.DUCT IS MARKED.INOPING APU. NEED DUCT. APPLIED MEL TOMC UPDATE: SEE LP 8582814 FOR CORRDec 31, 2018 · N56859 · Boeing 757324SDR UIEA2018122802956Gasket · defectiveAPU SHUT DOWN 3 TIMES , FAULTS ( REVERSE FLOW )(<P>TRANSFERRED TO MDDR 105196 AS PER MEL 49-11-01B CAT B. REPLACED TOTAL PRESSURE FLOW SENSING GASKET IAW REF AMM 49-53-03. APU OPS CHECK NORMAL. DMI CLEARED. PLACARDS REMOVED. </P>)Dec 29, 2018 · N640GT · Boeing 7673S1SDR AALA201901029026Apu · odorAS SOON AS APU BLEED WAS TURNED ON A STRONG MUSTY ODOR WAS EVIDENT THROUGHOUT THE AIRCRAFT. THE AIRCRAFT WAS GROUNDED. REPLACED THE APU IAW JC 26L31049003.Dec 28, 2018 · N712US · Airbus A319112SDR UIEA2018122802955Sensor · shortedAPU FAILED TO START NO APU FAULT EICAS (<P>TRANSFERRED TO MDDR 105126 AS PER MEL 49-11-01A CAT C.</P><P>PERFORMED APU WIRE BUNDLE ALL WIRING CHECK FOUND OK. FOUND MONOPOLE SENSOR SHORTED. REMOVED AND REPLACED SENSOR TS9 IAW AMM 49-51-02</P>)Dec 27, 2018 · N1709A · Boeing 767375SDR YENA201812264882Bleed Air Sys · odorFT # 483, BOS-MEX. DIVERTED TO JFK. DIRTY SOCK SMELL AT 7000'. SMELL DISSIPATED ON CLIMB OUT. CAME BACK CLIMBING THROUGH 20000 VERY STRONG ON DECENT; PERFORMED TROUBLESHOOTING OF CABIN ODOR AND EVIDENCE OF LEVEL 1 ODOR ( DIRTY SOCKS SMELL) PER INFO NOTICE 20ADec 24, 2018 · N784JB · Airbus A320232SDR ASAA2018122677563Wire Harness · malfunctionedAPU AIR PRESSURE DOES NOT MAINTAIN PRESSURE THAT WOULD BE NEEDED TO START. GROUNDED - YES. REMOVED AND REPLACED APU WIRE HARNESS IAW B737-900 AMM 49-11-01-400-802. GROUND VERIFICATION TEST IS GOOD. NO FAULTS. DRY MOTOR MAINTAINED STEADY PRESSURE AT AROUND 29% Dec 17, 2018 · N403AS · Boeing 737990ERSDR UIEA2018120602788Unknown · malfunctionedAPU HAS INSUFFICIENT DUCT PRESSURE FOR ENGINE START. PERFORMED OPS CKS PER APU AMM 49-11-02, OPS CKD GOOD.Dec 6, 2018 · N1321A · Boeing 767306SDR UIEA2018120702796Actuator · faultyAPU INOP. PERFORMED BITE PROCEDURE OF APU ECU IAW AMM 49-61-05. ECU WAS FOUND TO HAVE FLAGS 38,42, & 66. FLAGGING LRU INDICATE IGV ACTUATOR FAULTING. R&R APU IGV ACTUATOR IAW AMM 49-52-02. OPS CHECK GOOD.Dec 6, 2018 · N1487A · Boeing 76731KSDR 9JLA2019021316330Control Valve · intermittentTHE FLIGHT CREW REPORTED THAT DURING PREFLIGHT CHECKS IT WAS NOTED THAT THE APU LOAD CONTROL VALVE (LCV) OPERATIONS WERE INTERMITTENT. TROUBLESHOOTING DETERMINED THAT THE APU BLEED-AIR LCV. THE VALVE WAS REMOVED AND REPLACED WITH A REPAIRED CONTROL VALVE. OPS Dec 4, 2018 · N359V · Cndair CL6002B16SDR DALA2018120507049Duct · misinstalledDIV - DURING FLIGHT CREW WAS UNABLE TO MAINTAIN CABIN PRESSURIZATION. DIVERTED TO PIT. MAINTENANCE PRESSURIZED AIRCRAFT AND FOUND APU PNEUMATIC DUCT LEAK. APU BLEED DUCT AT AFT P-DOME INSTALLED BACKWARDS NOT ALLOWING DUCT FLANGE IN LOCATION FOR SEAL CLAMP. REMDec 4, 2018 · N3733Z · Boeing 737832SDR ASAA2018120227218Bleed Air Sys · malfunctionedAFTER 30 MINUTES OF APU RUNNING WE HAD APU BLEED AIR CYCLE HIGH AIR PRESSURE TO LOW AIR PRESSURE THEN AIR SHUT OFF. WHILE AIR PRESS WENT TO LOW EGT INCREASED ABOUT 20 EGT. GROUNDED - YES. PERFORMED B737-800 FIM 49-60 TASK 801, FOUND FAULT CODE 49-31171 (FUEL Dec 2, 2018 · N594AS · Boeing 737890SDR ASAA2018111927028Bleed Valve · inoperativeDURING START #1 ENG GOT TO 12% N2 AND STAGNATED. WE STOPPED THE START. TRIED AGAIN AND GOT NO ROTATION. GROUNDED - YES. VERIFIED BLEED AIR INOP. REMOVED AND REPLACED THE INLET PRESSURE SENSOR (P2) REF B737-800 AMM 49-52-31 AND INSPECTED PER TSR. REMOVED AND RENov 19, 2018 · N531AS · Boeing 737890SDR UIEA201811212658Warning Message · false activationPRIOR TO ENGINE START BOTH DUCT PRESSURES FLUCTUATE BETWEEN 15 AND 20 PSI (<P>PERFORMED OPS CHECK OF PNEUMATIC SYS IAW AMM 49-52-00 OPS CHECKED GOOD 35 PSI STEADY WITH NO PACKS RUNNING OPS CK GOOD </P>)Nov 19, 2018 · N1427A · Boeing 767306SDR HALA2018111900597Bleed Air Sys · faultedETOPS SIGNIFICANT SYSTEM - AIR APU BLEED FAULT.// PERFORMED BITE TEST OF BMC 1&2 PER A330 AMM 36-11-00. NO FAULT NOTED. PERFORMED ECS BITE, TEST OK. OK FOR SVC.Nov 17, 2018 · N391HA · Airbus A330243SDR UIEA2018111302590Ecu · malfunctionedAPU HAD NO BLEED AIR. REMOVED AND REPLACED THE APU ECU IAW AMM 49-61-05. APU OPS CHECKED GOOD.Nov 13, 2018 · N1487A · Boeing 76731KSDR DALA2018111206602Cooling Fan · leakingCREW REPORTS ON TAXI IN WITH SINGLE ENGINE RUNNING FLIGHT ATTENDANTS SAW HAZE THROUGHOUT THE CABIN WITH AN ODOR. FOUND APU LEAKING OIL FROM COOLING FAN AREA. PERFORMED DECONTAMINATION OF ECS WITH APU INOP. AFTER COOLING FAN AND TRANSFER TUBE REPLACEMENT, APU SNov 11, 2018 · N374NW · Airbus A320212SDR DALA2018110506448Cooling Fan · leakingFOUND AIR COMING OUT OF VENTS VERY MUST AND SOUR SMELLING. FOUND OIL IN APU INLET. FOUND APU COOLING FAN LEAKING OIL INTERNALLY. REMOVED AND REPLACED APU COOLING FAN. OPERATION CHECKS GOOD.Nov 3, 2018 · N344NW · Airbus A320212SDR UIEA2018110502521Valve · malfunctionedAPU INOPERATIVE. REMOVED AND REPLACED THE SURGE VALVE IAW AMM 49-53-01, OPS CHECKED OK.Nov 3, 2018 · N1499A · Boeing 767328SDR DALA2018110506449Apu · leakingPASSENGER REPORTED DIRTY SOCKS SMELL IN AIRCRAFT UPON ARRIVAL. INCOMING FLIGHT CREW REPORTED THE SAME. NO GO ODI PREVENTION COMPLIED WITH. CONTAMINATION SOURCE WAS SUSPECTED BY APU INLET DUE TO INTERNAL APU LEAKAGE.Nov 2, 2018 · N328NW · Airbus A320211SDR UIEA2018110102491Bleed Valve · malfunctionedNO DUCT PRESSURE WITH APU RUNNING. REPLACED THE APU BLEED VALVE IAW AMM 36-11-10. OPS CHECKED OK.Nov 1, 2018 · N1361A · Boeing 76731BSDR UIEA2018102902420Clamp · brokenFOUND APU SURGE VALVE CLAMP WAS BROKEN ON THE DUCT. REMOVED AND REPLACED THE CLAMP, LEAK CHECKED GOOD IAW AMM 49-53-01.Oct 27, 2018 · N649GT · Boeing 767375SDR UIEA2018102102296Valve · malfunctionedAPU INOP REVERSE FLOW. REMOVED AND REPLACED APU SURGE CONTROL VALVE IAW AMM 49-53-01. OPS TEST GOOD.Oct 21, 2018 · N1709A · Boeing 767375SDR UIEA2018102102303A/C Pack · faultyAPU SHUTDOWN ON PUSH BACK. PERFORMED FIM 49-11FT 994. REMOVED AND REPLACED SURGE VALVE IAW AMM 49-53-01.Oct 21, 2018 · N1049A · Boeing 76736NSDR UIEA2018102102308Bleed Air Sys · low pressureLOW APU BLEED PRESSURE DURING LEFT ENGINE START DISCONTINED START AND PERFORM A X BLEED START. UNABLE TO DUPLICATE CONDITION PERFORMED APU OPS TEST IAW AMM 49-11-00 OPS CHECK OK.Oct 20, 2018 · N1181A · Boeing 7673Y0SDR UIEA2018102202315Bleed Air Sys · fluctuatesLT ENG START DUCT PRESS FLUCTUATED 10-20 PSI MAX N2 OF 14, DISCONTINUED. START CROSSBLEED START ACCOMPLISHED NORMALLY. PERFORMED APU OPS TEST IAW AMM-49-11-00, NO FAULTS NOTED. OPS CHECK GOOD. UNABLE TO DUPLICATED CONDITION.Oct 20, 2018 · N1181A · Boeing 7673Y0
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