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.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR UIEA2016081000677Module · inoperativeINTERMITTENT , NO DUCT PRESSURE FROM APU. REPLACED FLOW SENSING MODULE IAW AMM 49-53-08. OPS CHECKED NORMAL.SDR HALA2016072300297Valve · malfunctionedAPU BLEED AIR INOPERATIVE. REMOVED AND REPLACED APU SURGE VALVE IAW AMM 49-53-01 LEAK AND SECURITY CHECKED GOOD. OK FOR SERVICE.SDR ZLWA20160926001Bleed Air Sys · lowDURING MAINTENANCE INVESTIGATION OF REPORTED LOW APU BLEED AIR PRESSURE DURING ENGINE START CYCLE, A DISCREPANCY BETWEEN AFM REV 49 DATED 10 DEC 2012 AND AMM REV 26 DATED SEPT 2015 FOR APU BLEED AIR PRESSURES REQUIRED FOR ENGINE START WAS DISCOVERED. AMM ENGISDR UIEA2016063000547Valve · looseAPU BLEED PRESSURE DROPPED FOLLOWED BY PACK SURGE ON GROUND AFTER ENGINES SHUTDOWN. PERFORMED PNEUMATIC LEAK TEST ON APU SENSOR LINES FOUND SURGE VALVE LOOSE. RE-TIGHTENED IAW MM 49-53-02.SDR UIEA2016062700478Plug · unsecureAT APU COMPARTMENT FOUND P-17 PLUG WAS NOT INSTALLED. AT APU COMPARTMENT LT SIDE P-17 PLUG RECONNECTED TO SURGE VALVE TORQUE MOTOR, M5, AND CHECKED IAW AMM 49-53-01.SDR UIEA2016062700511Housing · corrodedAPU SURGE VALVE HOUSING CORRODED. REPLACED HOUSING IAW AMM 49-53-06.SDR HALA2016061400238Valve · slowDURING TAXI IN WHEN APU BLEED SELECTED ON OBSERVED ECAM FOR AIR APU BLEED FAULT, RESET APU BLEED AND NO HELP. VALVE OPENED AFTER 4 MINUTES, FAULT CLEARED. PERFORMED BITE TEST OF BMC 1 AND 2 IAW AMM 36-11-00-740-802-A. TEST OK. CYCLED APU BLEED P/B SEVERAL TSDR IPXA2016052503854Gasket · leakingAPU- FLOW SENSING MODULE PRESSURE SENSOR GASKET SHOWS SIGNS OF LEAKAGE. REF TC 49-100-00 REPLACED GASKET IAW AMM 49-53-08-4.SDR UIEA2016051600309Duct · damagedAPU RUBBER DUCT FROM ENG, OUT TO SURGE VLV, HAS A HOLE. REMOVED & INSTALLED AIR SURGE DUCT, PN 3884292-2, IAW AMM 49-53-01-404-010. OPERATED APU NO LEAKS NOTED IAW AMM 49-00-00.SDR UIEA2016031500162Duct · damagedVENTILATION DUCT OF APU DAMAGED. R & R VENTILATION DUCT COOLING AT APU COMPARTMENT LT SIDE IAW & MM 49-51-01.SDR UIEA2016020800080Ecu · malfunctionedNO APU DUCT PRESS AFTER ENG START. R & R APU CONTROL UNIT. PERFORMED OPERATIONAL CHECK OK IAW MM 49-61-05.SDR UIEA2016020200036Shutoff Valve · faultyAPU PNEUMATIC FUNCTION ONLY PRODUCING 2 PSI AIR PRESS. WILL RISE AT ENG START SIGNAL. RECEIVED APU BITE P2 SENSOR FLAG 16. R & R VARIABLE VOLUME CHAMBER ON APU. R & R INLET TEMPERATURE SENSOR ON APU. R & R SOLENOID VLV ASSEMBLY ON APU. IAW AMM 49-53-07, SDR UIEA2016012700031Shutoff Valve · inoperativeAPU PNEUMATIC FUNCTION INOPERATIVE. OPENED MEL 49-11-01-01, REQUIRES TROUBLESHOOTING. R&R VARIABLE VOLUME CHAMBER ON APU. R&R INLET TEMPERATURE SENSOR ON APU. R&R SOLENOID VLV ASSEMBLY ON APU IAW AMM 49-53-07, 49-61-04 & 49-27-08. OPERATIONAL CHECK ON APUSDR UIEA2016012400028Bleed Air Sys · malfunctionedAPU AIR INOPERATIVE. PERFORMED FIM TK 49-11FT987, FLAG 16 & LRU P2 SENSOR LATCHED, CLEARED & BITE SELF-TESTED NORMAL. APU AIR ON LAST 2 LEGS, NO FAULTS, IAW FIM 49-11 FT 987. OPERATIONS CHECKED NORMAL.SDR QXEA2016011500034Bleed Air Sys · malfunctionedAFTER APU START UP AND THE SELECTION OF THE BLEED AIR TO "ON", THE F/A'S REPORTED SMOKE IN THE CABIN. C/W AIR CONTAMINATION CHECKLIST. CREW REPORTED SMOKE DISAPATED AFTER SEVERSL MINUTES. APU BLEED AIR WAS NEVER SELECTED OFF. INSPECTED APU COMPARTMENT, AND TSDR QXEA2016011500012Apu · contaminatedAFTER APU START UP AND BLEED AIR SELECTED ON, FA'S REPORTED SMOKE IN CABIN. C/W AIR CONTAMINATION CHECKLIST. CREW REPORTED SMOKE DISAPATED AFTER SEVERAL MINUTES. APU BLEED AIR WAS NEVER SELECTED OFF. INSPECTED APU COMPARTMENT, AND TAIL OF ACFT. NO LEAKS OR SDR DALA2015122807741Inlet · crackedDURING SEVERE TURBULANCE INSPECTION, FOUND APPROXIMATELY 6" CRACK AT AIR INLET LT SIDE AT BASE OF VERTICAL. WELDED APU AIR INLET IAW ERA 382101-14MA. ACCOMPLISHED FPI OF WELDED AERA IAW PS 900-6-3, NR 2.SDR P5CA2015122800218Bleed Valve · malfunctionedAPU AUTOSHUTDOWN, FAULT LIGHT ILLUMINATED. ECU BITE SHOWED REVERSE FLOW MSG. APU BLEED SURGE VALVE REPLACED IAW AMM 49-53-01 OPS CHECK OK NEW ECU BITE NO FAULTS.SDR COZA20151209069Control Valve · looseFOUND PROPORTIONAL CONTROL VALVE BODY LOOSE. VALVE IS LOCATED ON LOWER SIDE OF THE APU. REPLACED VALVE AND OPERATIONAL CHECK NORMAL.SDR DALA2015121407591Shutoff Valve · corrodedAPU BLEED AIR SHUTOFF VALVE HAS SURFACE CORROSION VIEWED THRU ACCESS DOOR 313AL RLO14. R & R APU BLEED SHUTOFF VALVE IAW AMM 36-11 -10-401. LEAK AND OPS CHECK DUE. PERFORMED OPS AND LEAK CHECK OF APU BLEED SHUT OFF VALVE, OPS AND LEAK CHECK GOOD IN REF TO ASDR HALA2015070500129Valve · unknownAPU BLEED FAULT ON ECAM. PERFORMED APU BITE IAW AMM 49-00-00-740-802. FAULTS APU BLEED VALVE. LRU T/S DATA SHOWS BLEED POSITION SW SHOWS NOT OPEN. T/S IAW TSM 49-62-00-810-841. PERFORMED RESISTANCE CHECK FROM ECB TO APU BLEED VALVE. NO FAULTS NOTED. FOUNDSDR WX0A2015062672697Clamp · defectiveTAIL COMPARTMENT HIGH ON CLIMB OUT. FOLLOWED QRH PROCEDURE 21.4 RETURNED TO FIELD. REF LOG PAGE 553713 FOR TROUBLESHOOTING & WORK ORDER 260063. FOUND LEAK FROM AFT APU LOAD CONTROL VLV. R & R CLAMP IAW AMM 20-10-11. OPERATIONS & LEAK CHECKED GOOD.SDR QXEA2015060600304Seal · leakingSULFUR ODOR IN FLIGHT DECK AND CABIN. VERIFIED ODOR COMING FROM THE APU BLEED AIR. TURNED OFF APU BLEED AIR AND ODOR DISSIPATED. GROUND RAN BOTH ENGINES WITH BOTH BLEED SOURCES ON. NO ODOR FOUND. VISUALLY INSPECTED & FOUND EVIDENCE OF OIL LEAK AROUND APU GSDR RAIA201505270001Bleed Valve · failedAPU BLEED VALVE FAILED MESSAGE FOLLOWED BY APU FAILED MESSAGE ON EICAS, APU INDICATED 28V ON BUSS, ACFT RETURNED TO BLOCKS. REPLACED THE BLEED VALVE, OPS CHECKED GOOD.SDR USAA2015031700005Packing · leakingSTRONG OIL MIST ODOR AFTER APU START. FLIGHT SWAPPED TO ANOTHER ACFT FOUND APU THE SOURCE OF CABIN ODOR. REPLACED NR 4 TURBINE CAVITY VENT TUBES PACKINGS IAW JC 26L00021001, 26L00021002 & 26L00021004. ACFT OK FOR SERVICE.SDR 9JLA201504038128Control Unit · failedDURING FLIGHT AT FLT LEVEL 360 THEY RECEIVED AN APU BLEED AIR LEAK WARNING. NOTE, APU WAS NOT OPERATING. TROUBLESHOOTING DISCOVERED THAT THE APU BLEED AIR LEAK DETECTION CONTROL UNIT PN 35009-20 WAS DEFECTIVE. A NEW UNIT WAS INSTALLED. OPERATIONS CHECKED OSDR RU3A20150302010Tube · damagedLEFT BLEED AIR FAIL ILLUMINATED. REPAIRED HOLE IN EVA TUBING.SDR UIEA2015020400079Duct · damagedAPU AIR SUPPLY DUCT HAS A HOLE IN IT. R & R APU SUPPLY DUCT. LEAK CHECK OK IAW AMM 49-53-01.SDR USAA2014111900001Cooling Fan · contaminatedEXTREMELY STRONG ODOR IN FLIGHT DECK & CABIN. COMPLAINTS OF STINGING EYES & NAUSEA FROM BOTH PAXS & CREW. REPLACED FAN ASSEMBLY FOR APU. OPERATIONS & LEAK CHECKED OK IAW AMM 49-52-51-000-001A.SDR UIEA2014110600559Duct · damagedAPU COOLING FAN OUTLET DUCT IS TORN & SEPARATED FROM FAN OUTLET. PROCURED SERVICEABLE APU COOLING FAN OUTLET DUCT & INSTALLED ON TCA-49-064-01.SDR UIEA2014101800496Clamp · looseAPU BLEED AIR LOW 15 PSI. TIGHTENED CLAMP ON SURGE VLV.SDR CWQR20141013007Tube · crackedDURING SCHEDULED INSPECTION WE FOUND THAT BLEED AIR TUBE PN 6955300-9 CRACKED AT THE APU FIREWALL BULKHEAD TO BLEED AIR TUBE ASSEMBLY ATTACH FLANGE. THE CRACK WAS TWO TO THREE INCHES LONG LOCATED AT THE WELD BETWEEN FLANGE & TUBE ASSEMBLY. A NEW TUBE ASSEMBLSDR USAA2014092900007Bleed Air Sys · odorAFTER PULLING & RESETTING CB L15, L16, C6 & T18, CREW REPORTED A PRONOUNCED BURNING PLASTIC SMELL WAS EVIDENT ON THE FLIGHT DECK. THE SMELL CONTINUES TO LINGER 15 PLUS MINUTES AFTER FIRST NOTICED. ACCOMPLISHED TSM 05-50-00-810-831-A & FOUND SOURCE OF ODOR COSDR HALA2014092100142Warning Message · false activationDURING CRUISE FLT, RECEIVED ECAS ELEC CIRCUIT BREAKER TRIPPED. BITE TEST APU, NO FAULTS. RESET OIL/SERVICE CIRCUIT BREAKER. FUCTIONAL CHECKED OF APU OK. LEAK TEST OF APU OIL HEATER OK. NO LEAKS. OK FOR SERVICE.SDR HALA2014091100136Warning Message · false activationNO APU DUCT PRESSURE. IAW APU ECU BITE, FAULTING PT2 INLET PRESSURE SENSOR. RESET APU ECB. BITE TEST COMPLETED AND ALL PASSED. OPERATED APU BLEED VALVE SEVEARL TIMES. ALL OPS NORMAL. PRESSURE 32PSI. OPERATED PACKS. ALL INDICATIONS NORMAL. OK FOR FURTHESDR UIEA2014081200396Ecu · malfunctionedAPU BLEED AIR INOPERATIVE. TRY APU SHUTDOWN & ON BUT SAME CONDITION, SO PNEUMATIC SYS IS DEFERRED IAW MEL 49-11-01-01 CAT C. APU ECU REPLACED IAW AMM 49-61-05, BITE CHECK CARRIED OUT OK. APU PNEUMATICS FUNCTIONALLY CHECKED SERVICEABLE, DUCT PRESS 38 PSI DURSDR SWIA201438862Oil Cooler · malfunctionedFOLLOWING A GEN 2 FAILURE, CREW COMPLIED WITH QRH AND DESCENDED TO 300FT AND STARTED APU. RECEIVED AN APU HIGH OIL TEMP. REPLACED APU OIL COOLER IAW AMM.SDR UIEA2014063000293Ecu · malfunctionedAPU COLD START, OAT - 44C, FL350, START UNSUCCESSFUL. R & R ECU OPS CHECKED GOOD IAW AMM 49-11-00.SDR CALA2014063091373Bleed Air Sys · malfunctionedCREW REPORT APU BLEED AIR INOPERATIVE ON GATE. APU ELEC OK. CYCLED BLEED SWITCH WITH NORMAL PRESS EACH TIME. RAN PACK MAINTAINED 28 PSI. TAXI CREW INDICATING NORMAL ENG STARTS IAW JRH 2-5-00SDR UIEA2014062900252Ecu · failedAPU BLEED INOPERATIVE. R & R APU ECU IAW MM 49-61-05. OPS CHECKED NORMAL.SDR CA140703004Clamp · broken(CAN) APU DC STARTER GENERATOR V-BAND CLAMP, T-BOLT FOUND BROKEN OFF AT THE TEE. QUAD ADAPTER INSPECTED AND FOUND DAMAGED FROM THE STARTER GENERATOR UNSECURED MOVEMENTS DURING OPERATION. PARTS REPLACED AND RETURNED TO SERVICE. AFH 7924.21, AFC 5760, SG TSN 1SDR USAA2014051400003Seal · out of positionCREW REPORTED A BURNT SYRUP SMELL IN COCKPIT & CABIN IN DESCENT. SELECTED APU ON & AIR BLEED ON, SMELL DISSIPATED. FOUND APU PLENUM SEAL OUT OF RETAINER, RESEATED SEAL. CHECKED BOTH ENGS FOR OIL LEAK AT LPT SHAFT SEALS, NO LEAKS NOTED. ACCOMPLISHED JOB CARDSDR UIEA2014051700197Relay · defectiveAPU BLEED INOPERATIVE. TRANSFERRED TO MDDR 48227, DEFERRED IAW DDPG 49-11-01-01 CAT C PLACARD. R & R RELAY K23 AT PANEL P49 IAW SWPM 20-81-22. OPERATIONS CHECKED OF APU SOV GOOD IAW AMM 36-11-10. THIS CLEARS MDDR 48227, MCC NOTIFIED & PLACARD REMOVED.SDR UIEA2014051200176Bleed Air Sys · inoperativeAPU BLEED INOPERATIVE.SDR UIEA2014051300180Spring · missingAPU SURGE VLV FILTER ELEMENT SPRING IS MISSING FROM BETWEEN THE FILTER ELEMENT & THE REDUCER. INSTALLED SPRING PN 663466 FOR APU SURGE VLV FILTER ELEMENT & THE REDUCER IAW AMM 49-53-06. LEAK CHECK ACCOMPLISHED WITH NO LEAKS NOTED.SDR HALA2014043000057Warning Message · false activationAPU ISOLATION VALVE STATUS MESSAGE DISPLAYED. RESET MESSAGE & CLEARED GROUND, OPS CHECK NORMAL. OK FOR SERVICE, FIM 28-25, FIG 104.SDR CALA2014032090655Bleed Air Sys · malfunctionedNOT ENOUGH AIR TO GET FUEL ON COMMAND TO START LT ENG. NR 2 ENG WAS STARTED USING APU, NORMAL START OPERATION. ATTEMPT TO START NR 1 ENG, APU DUCT PRESS WAS LOW. USED CROSS BLEED TO START NR 1 ENG, NORMAL START. RECHECK OF THE APU BLEED AIR PSI, PRESS RETUSDR DXTA2014021205648Shutoff Valve · failedDURING PREFLIGHT WITH THE APU RUNNING & BLEED AIR ON THERE WAS NO COLD AIR BEING PRODUCED. AFTER SELECTING A COLDER TEMP & AIR SOURCE TO HIGH WITHIN A MINUTE THERE WAS A POOF SOUND & THE CABIN FILLED WITH A STRONG SMOKE & ELECT SMELL. ACM OVERHEAT ANNUNCIATOSDR UIEA2014011500011Control Unit · malfunctionedAPU BLEED FUNCTION INOPERATIVE, AFT APU START. R&R APU CONTROL UNIT & IGV ACTUATOR IAW AMM 49-61-05 & 49-52-02. PERFORMED PNEUMATICS FUNCTIONAL CHECK IAW AMM 49-11-00, OPERATIONS CHECKED NORMAL. APU CONTROL UNIT OFF PN 2117342, SN 82-C0082, EGV ACTUATOR PN SDR UIEA2014010700003Bleed Air Sys · malfunctionedNO BLEED AIR FOR ENG START, RETURNED TO GATE FOR APU RE-START. AFTER APU RE-START, BLEED AIR PRESS OK IAW MM 36-11-00.
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