JASC 4990

Service difficulty reports · 2,654

Reports filed under 4990 · APU Oil 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 = '4990'
  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 UIEA2020082851869Filter · warning messageAPU INOP DUE (AUXILIARY POWER UNIT (APU),ER OPERATIONS NOT ALLOWED. REMOVED AND REPLACED APU GENETATOR SCAVENGE FILTER ELEMENT IAW TASK 49-27-03-004-001. REMOVED AND REPLACED APU SURGE VALVE FILTER IAW TASK 49-53-06-402-009. CHECKED OPS GOOD.Aug 24, 2020 · N1181A · Boeing 7673Y0SDR ASAA2020082643080Filter · warning messageAPU WOULD NOT START ON TAXI IN, LOW OIL PRESSURE LIGHT ILLUMINATED. GROUNDED - YES. COULD NOT DUPLICATE ISSUE. APU STARTED UP EVERY TIME, DID THREE STARTS WITHOUT ENGINE AND JUST FOR PRECAUTION REMOVED AND REPLACED APU OIL FILTER OPS CHECK GOOD NO DEFECTS NAug 24, 2020 · N459AS · Boeing 737990ERSDR ASAA2020081873035Filter · cloggedAPU LUBE MODULE CLOG INDICATOR POPPED. GROUNDED - YES. REMOVED AND REPLACED LUBE FILTER ELEMENT, REF B737-900 AMM 49-91-12. NO DEFECTS NOTED.Aug 17, 2020 · N433AS · Boeing 737990ERSDR UIEA2020081971787Oil System · lowAPU FAULTS AFTER LANDING, 2 ATTEMPTS FAILS APPROX 85% RPM. APU ECU INDICATED LOW OIL LEVEL. ADD 2 QTS TO APU IAW AMM 12-13-04. CLEARED MSG, RAN APU WITH HEAVY LOAD. NO LEAKS NOTED. 3 SUCCESSFUL APU STARTS, OPS CHECK NORMAL. APU HRS @ 4985.3.Aug 16, 2020 · N1013A · Boeing 76736NSDR ASAA2020081753027Lubrication Unit · failedAPU FAILED TO START AT FL370; 1ST ATTEMPT EGT ROSE TO 600 FAULT LIGHT ILLUMINATED APU SHUT DOWN ON ITS OWN, 2ND ATTEMPT 10 MINUTES LATER NO EGT, FAULT LIGHT, NO START. GROUNDED - YES. REPLACED APU LUBE MODULE AND FUEL CONTROL UNIT, REF B737-900 AMM 49-91-11-0Aug 15, 2020 · N469AS · Boeing 737990ERSDR AALA202008199024Cooling Fan · leakingAIRCRAFT WAS GROUNDED: OIL SMELL IN CABIN WITH EVIDENCE OF OIL LEAK OR INGESTION ON APU; APU DISPATCHED ON 10-DAY MEL DEFERRAL. REPLACED APU OIL COOLER WITH NEW IAW TASK CARD 26L31049004 AND ACCOMPLISHED SATISFACTORY LEAK AND OPERATIONAL CHECKS. ALSO REPLACED Aug 13, 2020 · N747UW · Airbus A319112SDR AALA202008149014Oil Cooler · leakingAIRCRAFT WAS GROUNDED. OIL SMELL IN CABIN WITH EVIDENCE OF OIL LEAK OR INGESTION ON APU. APU DISPATCHED ON 10-DAY MEL DEFERRAL. SUPPLEMENTAL REPORT: REPLACED APU OIL COOLER (AALA202008149014), IAW TASK CARD 26L31049004 AND ACCOMPLISHED SATISFACTORY LEAK ANDAug 13, 2020 · N747UW · Airbus A319112SDR UIEA2020081401770Oil System · lowAPU FAULT ON START AFTER LANDING 2ND ATTEMPTS HUNG AT 20% RPM. SERVICED APU OIL. PERFORMED BITE TEST ON APU CONTROL. STARTED APU, START OK PER MM 49-41-00. OPS CHECK GOOD.<BR /></P>)Aug 13, 2020 · N1409A · Boeing 767306SDR SIMA202007287002Oil System · lowWHILE TAXING A/C TO THE GATE APU SHUT DOWN, WITH APU FAIL AND APU LOW OIL PRESS CAUTION EICAS MSG. SERVICE APU WITH OIL IAW E-175 AMM 12-13-05. OPS CHECK GOOD REF FIM 49-90-00.Jul 27, 2020 · N221NN · Emb ERJ170200LRSDR SCNA20200721049Pressure Switch · malfunctionedDURING CLIMB OUT FROM MSP APU LOW OIL PRESSURE LIGHT ILLUMINATED FOLLOWED BY #2 SOURCE OFF LIGHT ILLUMINATING. DECLARED AN EMERGENCY- AIR RETURN. REMOVED AND REPLACED APU LOW OIL PRESSURE SWITCH IAW AMM 49-94-22. DPI INDICATOR INSPECTED, OIL LEVEL FULL. OKJul 18, 2020 · N5693A · Boeing 7378SDR AALA2020072199002Fan · leakingAIRCRAFT WAS GROUNDED:ACRID, SOCK SMELL DURING DECENT AND TAXI IN. ACCOMPLISHED TROUBLESHOOTING OF S.O.F. PER JOB CARD 26L00021001, FOUND APU OIL COOLER FAN LEAKING. REPLACED APU OIL COOLER FAN PER AMM 49-52-51.ACCOMPLISHED APU TROUBLESHOOTING AND DECONTAMINATJul 17, 2020 · N778XF · Airbus A319112SDR UIEA2020071501557Oil System · lowAPU AUTO SHUT DOWN IN FLT. "LOW" OIL QTY INDICATED ON EICAS STATUS. SERVICED APU 1.0 QT. PERFORMED EXTERNAL LEAK CHECK. NO LEAKS NOTED. OPS CHECKED GOOD IAW 49-41-81.Jul 15, 2020 · N645GT · Boeing 767324SDR UIEA2020071321534Oil System · lowAPU FAULT LIGHT ILLUMINATED, 2 START ATTEMPTS, APU ECU INDICATION LOW OIL PRESSURE, OIL LEVEL. ADDED 3 QTS OF OIL TO APU IAW AMM 12-13-04, CLEARED FAULT AND RAN APU WITH PACKS FOR 5 MINUTES, NO FAULTS, OIL LEVEL GOOD. OPS CHECKED GOOD IAW AMM 49-00-00.Jul 12, 2020 · N1013A · Boeing 76736NSDR F3LA202007130030Oil System · overservicedONCOMING CREW REPORTED TO MX THERE WAS A SMELLY SOCK ODOR WHEN THEY TURNED ON APU BLEED. MX TROUBLESHOT AND FOUND THE APU TO BE OVERSERVICED. MX RAN BLEEDS TO BURN OUT PACKS AND BLEED LINES NO ODOR REMAINED. PERFORMED TSM FOR ODOR EVENT, FOUND APU OVER SERJul 11, 2020 · N216FR · Airbus A320214SDR AALA202007109012Fan · leakingAIRCRAFT WAS GROUNDED, DURING DESCENT AND APPROACH A LINGERING OIL / DIRTY MUSTY SMELL WAS REPORTED. FOUND APU OIL COOLER FAN LEAKING OIL, REPLACED OIL COOLER FAN AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 49-52-51.Jul 8, 2020 · N806AW · Airbus A319132SDR UIEA2020070601483Oil System · lowAPU FAULT LITE ON START ATTEMPT. SERVICED APU OIL IAW MM CH 12-13-04. APU POWER GENERATION CK'S GOOD IAW MM CH 24-21-00 ALSO RESET CB 2 AND C/W BITE TEST OF EPCU TEST PASS IAW MM 24-22-00.Jul 3, 2020 · N1487A · Boeing 76731KSDR UIEA2020062601407Oil System · lowCOLD SOAK APU START UNSUCCESSFUL AFTER 3 ATTEMPTS. PERFORMED BITE TEST FOR APU. MSG SHOWED LOW OIL. SERVICED AS REQUIRED. 2ND ATTEMPT AT APU START SUCCESSFUL IAW AMM 49-00-00. DMI 130249 REMAINS OPEN FOR APU COLD SOAK START.Jun 25, 2020 · N1373A · Boeing 76731KSDR UIEA2020052701125Oil System · lowAPU FAULT ON TAXI AFTER ATTEMPTED START, APU OIL QT ADD SHOWED ON STATUS. SERVICED APU OIL 2QTS IAW AMM 12-13-04. PERFORMED APU START; NO FAULTS, OK FOR SERVICES IAW 49-11-00.May 25, 2020 · N1409A · Boeing 767306SDR UIEA2020052101100Oil System · lowAPU FAULT AFTER LANDING. 2 ATTEMPTS MADE.(<P>PERFORMED SUCCESSFUL STARTS IAW AMM 49-11-00. SERVICED .5 QT OIL IAW AMM 12-13-04. BITE TEST ECU IAW AMM 49-61-05.</P>)May 21, 2020 · N1409A · Boeing 767306SDR UIEA2020051401036Oil System · lowAPU FAULT/ OIL Q "ADD"(<P>SERVICED APU OIL, 1 QT AT 2791.1 HRS IAW B767 AMM 12-13-04</P>)May 14, 2020 · N640GT · Boeing 7673S1SDR JJBA2020052010006O-Ring · damagedSMELL OF HYD OR FUEL DURING TAKE OFF. SMELL WENT AWAY AFTER APU SHUTDOWN AND BLEEDS TRANSFERRED TO ENGINES. PERFORMED T/O POWER RUNS IN THESE SCENARIOS - APU OFF, BOTH ENGINES AT T/O POWER, BLEED 2 OPEN, BLEED 1 CLOSED AND PACK 1 ON. ONLY SMELL FROM THIS SET May 10, 2020 · N16149 · Emb EMB145XRSDR UIEA2020051500993Control Valve · malfunctionedAPU AUTO SHUTDOWN / APU FAULT.(<P>APU DEFERRED IAW MEL 49-11-01A THIS IS A CAT "C" ITEM. APU ECU SHOWS "HIGH OIL TEMP" FAULT MDDR# 128079. TIME 22:49Z INT: JT DUE DATE 17MAY20.</P><P>LP 1140515: REMOVED AND REPLACED OIL TEMP CONTROL VALVE ASSY IAW AMM 49-27-10May 7, 2020 · N1619A · Boeing 7673Y0SDR 9JLA2020050520795Seal · failedTHE FLIGHT CREW REPORTED THAT SHORTLY AFTER TAKEOFF, LIGHT SMOKE ENTERED THE COCKPIT. AFTER SHUTTING DOWN THE AUXILIARY POWER UNIT (APU) THE SMOKE DISSIPATED. THE FLIGHT CREW RETURNED BACK TO THE AIRPORT AND COMPLETED A PRECAUTIONARY LANDING WITH INCIDENT. A May 3, 2020 · N44CD · Cessna 560XLSDR UIEA2020050600937O-Ring · missingAPU STATUS MESSAGE APU OIL QUANTITY (<P>FOUND APU OIL CAP MISSING O-RING, INSTALLED NEW O-RING IAW AMM 49-94-00 AND SERVICES IAW AMM 12-13-04, CHECK FOR LEAKS, GOOD. PERFORMED 3 STARTS WITH NO FAULTS.</P>)May 2, 2020 · N1409A · Boeing 767306SDR UIEA2020050400936Oil Cap · defectiveAPU OIL QTY LOW(<P>TRANSFERRED TO MDDR 127826 PER MEL 49-11-01A, CAT 'C', DUE DATE 12MAY20, DISPATCH ACL 0459Z.<BR /></P><P>LP 1150085: REMOVED AND REPLACED APU OIL FILLER CAP IAW AMM 12-13-04 AND OPS CHECK IAW AMM 49-11-00. OPS CHECK GOOD. NO LEAKS NOTED. DMIMay 2, 2020 · N1409A · Boeing 767306SDR UIEA2020042900911Oil System · lowAPU FAULT UPON LANDING(<P>INSPECTED APU SIGHT GLASS AND FOUND TO BE LOW. SERVICED APU WITH 02 QUARTS OF OIL IAW B767 AMM 12-13-04. OPS CHECK GOOD. APU STARTED FIRST ATTEMPT. NO DEFECTS NOTED.</P>)Apr 28, 2020 · N645GT · Boeing 767324SDR UIEA2020042200810Transmitter · malfunctionedAPU OIL QUANTITY INOP, FLUCTUATES FROM ADD TO FULL AND ALL POINTS IN BETWEEN. VERIFIED OIL QTY IS FULL BY VISUAL SIGHT GLASS. APU OIL QTY TRANSMITTER WAS REPLACED IAW AMM 49-94-04-404-004.Apr 22, 2020 · N641GT · Boeing 76738ESDR UIEA2020042100803Transmitter · failedAPU FAULT EICAS MSG. REMOVED AND REPLACED APU OIL QTY TRANSMITTER IAW MM 49-94-04/401.Apr 20, 2020 · N1427A · Boeing 767306SDR AALA202004139005Oil Cooler · leakingAIRCRAFT WAS GROUNDED: ODOR EVENT OIL MIST PRONOUNCED DURING DESCENT WITH ENG HP VALVES OPEN. FOUND APU OIL COOLER HAS INTERNAL LEAK; REPLACED APU OIL COOLER REF AMM 49-91-44. ALSO SEE AALA202004139001Apr 13, 2020 · N754UW · Airbus A319112SDR UIEA2020041400754Transmitter · faultyAPU OIL QUANTITY INDICATOR FLUCTUATES IN FLIGHT.(<P>REMOVED AND REPLACED OIL QUANTITY TRANSMITTER IAW AMM 49-94-04, OPS CHECKS GOOD.</P>)Apr 11, 2020 · N641GT · Boeing 76738ESDR CNMA2020050540001Warning System · false indicationSTATUS - APU OIL QTY. CORRECTIVE ACTION:UPON VISUAL INSPECTION FOUND APU OIL SIGHT GAUGE READING LOW OIL QUANTITY. RAN THE APU AND OIL QUANTITY RETURNED TO CORRECT LEVELS IAW B767 AMM 49-11. NO LEAKS NOTEDApr 9, 2020 · N207AX · Boeing 767200SDR RU3A202004098016Warning System · activatedAPU OIL PRESSURE LIGHT. APU AUTO SHUTDOWN ON ARRIVALApr 8, 2020 · N88 · Cndair CL6002B16SDR ASAA2020040332597Oil Cooler · leakingAPU OIL COOLER LEAKING FROM FINS. GROUNDED - YES. REMOVED AND REPLACED APU OIL COOLER REF B737-800 AMM 49-91-41 OPS CHECK LEAK CHECK GOOD.Apr 2, 2020 · N529AS · Boeing 737890SDR SWAA2020040335144Oil System · lowAPU ON; PER MEL; INFLIGHT APU GENERATOR DROPPED OFFLINE AND WOULD NOT RESET LEAVING ONLY 1 WORKING GENERATOR. / REFERENCE PREVIOUS LOG PAGE FOUND APU OIL LOW. SERVICED IAW M/M 12-18-31 APU OPS CHECK OK IAW M/M 49-11-00Mar 30, 2020 · N8501V · Boeing 7378H4SDR AALA202003309009Packing · damagedAIRCRAFT WAS GROUNDED: CABIN ODOR EVENT. FOR 60 PERSISTENT MINUTES THROUGHOUT THE CABIN,INCLUDING THE FLIGHT DECK. A DIRTY/NUSTY ODOR WITH A HAZE WAS EXPERIENCED. REMOVED AND REPLACED APU OIL SUPPLY LINE AND PACKINGS IAW AMM 49-91-44, OPS GOOD, NO LEAKS NOTED.Mar 27, 2020 · N774XF · Airbus A319112SDR AALA202003279007Cooling Fan · odorAIRCRAFT WAS GROUNDED: F/A'S REPORT FUMES IN AFT CABIN. DIZZINESS AND NAUSEA AND LIGHT HEADED ALL F/A'S WENT ON O2. SUSPECT COOLING FAN ASSEMPLY. REPLACED APU OIL COOLER FAN IAW AMM 49-52-51.Mar 26, 2020 · N551UW · Airbus A321231SDR AALA202003269008Garlock Seal · cutAIRCRAFT WAS GROUNDED: A DIRTY MUSTY ODOR PERSISTENT FOR 50 MINUTES, TRANSIENT 10 MINUTES. EVENT OCCURRED DURING TAXI-OUT, TAKEOFF, CLIMB, DESCENT, APPROACH AND LANDING. FOUND STARTER SEAL (APU) LEAKING/CUT. REMOVED AND REPLACED APU STARTER SEAL IAW AMM 49-42Mar 25, 2020 · N585UW · Airbus A321231SDR UIEA2020032600557Oil System · lowAPU OIL QUANTITY LOW, APU SHUT DOWN ON DESCENT.(<P>SERVICED APU OIL I/A/W AMM 12-13-04, APU OPS CHECK NORMAL.</P>)Mar 23, 2020 · N1709A · Boeing 767375SDR DALA2020032301989Oil System · unknownAFTER T/O, FLT ATTND CALLED AND NOTIFIED THE FLT DECK OF BURNING ELECTRICAL SMELL FROM REAR JUMP SEAT AREA. FLT DECK AREA HAD A SLIGHT ODOR OF BURNING OIL BUT DISSIPATED QUICKLY. A FEW MIN LATER, ODOR FROM CABIN REAR DISSAPTED AS WELL. NO OTHER ODOR EVENTS AS Mar 23, 2020 · N997DL · Doug MD88SDR DXTA2020032003600Oil System · overservicedCOCKPIT ODOR BURNING SMELL - AFTER TAKEOFF AND TRANSFERRING THE BLEEDS TO THE ENGINES AND THE APU WAS SHUT DOWN. WHILE CLIMBING THROUGH AROUND 8000 FEET WE NOTICED A DISTINCT ODOR THAT SMELLED LIKE SMOKE, WITH NO VISIBLE SMOKE IN THE COCKPIT OR CABIN. QRC ANDMar 19, 2020 · N738QS · Bombdr BD1001A10SDR GTIA2020032335112Apu · leakingDURING DESCENT THROUGH 18,000' DIRTY SOCK SMELL IN COCKPIT FOR BRIEF TIME, LESS THAN 1 MIN-REF LP #2583588-1 FOR CORRECTIVE ACTION FOR APU OIL LEAK. PERFORMED PACK BURN IAW AMM 21-00-00. NO ODORS AT THIS TIME. PACK 1 OK FOR SERVICEMar 19, 2020 · N522NK · Airbus A319132SDR CALA2020032100662Transmitter · faultyAUXILIARY POWER UNIT EICAS MESSAGE APU OIL QTY DISPLAYED AND OIL QTY READS ADD (ON AIRPLANES WITH OIL QUANTITY TRANSMITTER) INDICATION ON STATUS PAGE ON CLIMBOUT THEN 0.25 OIL QUANTY SHOWS AT CRUISE REQUEST MEL 4994B. APU OIL VERIFIED FULL AT SIGHT GLASS APU VMar 16, 2020 · N19117 · Boeing 757224SDR UIEA2020031900494Oil System · lowAPU FAULT ON GROUND.(<P>SERVICED APU OIL TO FULL, NO LEAKS NOTED. PERFORMED BITE TEST ON ECU, NO FAULT FOUND. APU STARTED. OPS CK GOOD. REF AMM 49-11-00. OK TO CONTINUE AT THIS TIME.<BR /></P>)Mar 16, 2020 · N1427A · Boeing 767306SDR HALA2020031600061Oil System · lowETOPS SIGNIFICANT SYSTEM - APU LOW OIL LEVEL. // SERVICED APU OIL PER AMM 12-13-49. OK FOR SVC.Mar 15, 2020 · N378HA · Airbus A330243SDR GTIA2020031635091Pressure Switch · looseAFT CABIN ENCOUNTERED DIRTY SOCK SMELL ON SHOT FINAL -PERFORMED TSM 05-50-00-810-831 FOUND APU LEAKING FROM PRESSURE SWITCH. RE- TIGHTED PRESSURESWITCH LINE IAW AMM 49-94-14. PERFORMED DECONTAMINATION OF THE ECS IAW AMM 21-00-00. NO SMELL NOTICED. PERFORMED #Mar 13, 2020 · N508NK · Airbus A319132SDR ASAA2020031232411Filter Element · cloggedWHILE PERFORMING APU GENERAL VISUAL INSPECTIONS, FOUND RED BUTTON EXTENDED ON OIL FILTER INDICATOR. GROUNDED - YES. REMOVED AND REPLACED LUBE FILTER ELEMENT FOR APU. OPS CHECK GOOD PER B737-800 AMM 49-91-12. NO LEAKS NOTED.Mar 11, 2020 · N597AS · Boeing 737890SDR UIEA2020031000423Oil System · lowAPU FAULT, 3 ATTEMPTS TO START.(<P>PERFORMED BITE OF APU IAW FIM 49-11-FT 987, FOUND LOW OIL PRESS FAULT LIGHT. APU OIL FOUND TO BE LOW, SERVICED APU TO FULL IAW AMM 12-13-14, APU HOURS @4144.8; PERFORMED 03 SUCCESSFUL APU STARTS. PLACED LOAD ON APU, NO FAULTSMar 9, 2020 · N1013A · Boeing 76736NSDR ASAA2020031232288Lubrication Unit · faultyAPU FAILED START AT FL 370, 370, 380 WITH FAULT LIGHT. FAULT EXTINGUISHED IMMEDIATELY AFTER FIRST ATTEMPT AND SWITCHED OFF. FAULT LIGHT EXTINGUISHED AFTER 5 MINUTES AFTER 2ND AND 3RD ATTEMPTS. EGT REACHED 950 EACH ATTEMPT. GROUNDED - YES. REPLACED APU LUBE MODFeb 25, 2020 · N402AS · Boeing 737990ERSDR AALA202002269014Cooling Fan · faultyAIRCRAFT WAS GROUNDED: SLIGHT DIRTY SOCK SMELL ON DESCENT. REMOVED AND REPLACED APU OIL COOLING FAN IAW MM 49-52-51 AND ACCOMPLISHED APU WASH IAW AMM 45-00-00-100-001-A.Feb 25, 2020 · N828AW · Airbus A319132SDR CNMA202002240001Oil System · leakingSMOKE DETECTOR FOWARD CREW REST TWICE. MIST IN AIR. BURNING EYES. CORRECTIVE ACTION: APU LEAKING OIL INTERNALLY. REMOVED AND REPLACED APU IAW B777 AMM 49-11 LEAK AND OPS CHECK GOOD AT THIS TIME. PERFROMED OPERATIONAL TEST OF AIR CONDITIONING SYSTEM AND OIL CONFeb 22, 2020 · N846AX · Boeing 7772U8
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