JASC 4990

Service difficulty reports · 2,656

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 ASAA2016083117877Bypass Switch · failedAFTER STARTING APU ON TAXI IN, APU FAULT LIGHT ILLUMINATED AND AUTO SHUTDOWN OCCURRED. RAN QRH,TURNED OFF APU SWITCH. ACFT GROUNDED. ACCOMPLISHED FIM TASK 49-90, TASK 809. PERFORMED MAGNETIC DRAIN PLUG INSPECTION REF AMM TASK 49-91-81. NO METAL PARTICLESAug 31, 2016 · N492AS · Boeing 737990ERSDR UIEA2016090100728O-Ring · leakingOIL COOLER BYPASS VALVE LEAKING, APU. REPLACED APU OIL COOLER BYPASS VALVE O-RINGS IAW AMM 49-27-10-404-006, STEP 1 A-F, ACCOMPLISHED LEAK CHECK IAW AMM 49-11-00-802-002.Aug 29, 2016 · N649GT · Boeing 767300SDR ASAA2016082717822Indicator · failedAPU DPI BUTTON FOUND EXTENDED DURING PDC. ACFT GROUNDED. ACCOMPLISHED OIL FILTER INDICATOR SERVICE AND CHECK, IAW AMM 49-91-13-600-801. FILTER CHECKED CLEAN AND REPLACED, IAW 49-91-12. OIL FILTER INDICATOR WOULD NOT RESET. REPLACED INDICATOR AND RESET, IAW AMAug 27, 2016 · N516AS · Boeing 737890SDR DXTA2016082106289Oil System · overservicedEARLY IN THE FLIGHT AIR SMELLS NORMAL. AFTER SOME TIME, ENROUTE AND AFTER ADJUSTING BLEED AIR TO A WARMER TEMPERATURE THERE IS AN ACRID OIL BURNING ODOR COMING FROM THE COCKPIT AND CABIN WARM AIR VENTS. COMPLIED WITH APU MEL MAINTENANCE PROCEDURES. RAN APU,Aug 25, 2016 · N615QS · Cessna 560XLSDR ASAA2016082317788Oil Cooler · leakingREF TSR908126: APU OIL MONITORING DATA SHOWS OIL CONSUMPTION TO BE TRENDING HIGHER THAN EXPECTED. ACCOMPLISHED FIM TASK 49-95-801 UP TO STEP E-1-B. WHILE ACCOMPLISHING TSR 908126 FOUND APU OIL COOLER LEAKING. ACFT GROUNDED. REPLACED APU OIL COOLER, REF AMMAug 23, 2016 · N423AS · Boeing 737990ERSDR ASAA2016081817763Sensor · failedAPU OIL AT CDU INDICATES LOW. ACFT GROUNDED. VERIFIED OIL LEVEL AT APU FULL, PERFORMED FIM 49-90, TASK 804. FOUND MESSAGE NR 49-91227. R & R OIL QTY SENSOR, REF AMM 49-94-11. NO FURTHER FAULTS OR DEFECTS NOTED, OPS CHECK NORMAL.Aug 18, 2016 · N483AS · Boeing 737990ERSDR AALA201608199005Oil Cooler · leakingAIRCRAFT WAS GROUNDED, FLIGHT CREW REPORTED A CABIN ODOR, DIRTY SOCK, WHEN SWITCHING FROM GROUND AIR TO APU BLEED AIR. MAINTENANCE REPLACED THE APU OIL COOLER ASSY IAW AMM 49-91-44 AND ACCOMPLISHED A SATISFACTORY LEAK AND OPS CHECK.Aug 17, 2016 · N832AW · Airbus A319132SDR AALA201608169004Seal · leakingDIRTY SOCK ODOR REPORTED IN COCKPIT, DECENDING THROUGH 11000 FT. AIRCRAFT GROUNDED. MAINTENANCE FOUND THE APU GENERATOR ACCESSORY GEARBOX MOUNTING PLATE AND GENERATOR SHAFT SEALS LEAKING OIL, DEFECTIVE SEALS REPLACED IAW AMM 24-23-51. A SATISFACTORY OPS & LAug 15, 2016 · N765US · Airbus A319112SDR AALA201608159004Apu · overservicedFLIGHT CREW REPORTED AN OIL ODOR IN AIRCAFT THAT WAS CAUSING HEADACHES WHILE THE AIRCRAFT WAS AT THE GATE. AIRCRAFT GROUNDED. MAINTENANCE FOUND THE APU OIL HAD BEEN OVERSERVICED, DRAINED OIL SYSTEM TO PROPER LEVEL AND ACCOMPLISHED A SATISFACTORY OPS CHECK WAug 13, 2016 · N655AW · Airbus A320232SDR HALA2016081000327Oil System · underservicedAPU FAULT WHEN STARTING IAW ECAM SHUTDOWN APU, SECOND START ATTEMPT, APU OK. G.V.I. OF APU COMPARTMENT, FOUND APU OIL QTY LOW AT ADD LINE. SERVICED APU OIL TO FULL. INSPECTED COMPARTMENT FOUND NO DISCREPANCIES AT THIS TIME. ALSO INSPECTED EXHAUST AREA. N.T.Aug 10, 2016 · N392HA · Airbus A330243SDR ASAA2016080517627Indicator · defectiveAPU FILTER DPI FOUND EXTENDED DURING PDC WALKAROUND. ACFT GROUNDED. REF AMM 49-91-13 INSPECTED APU LUBE FILTER ELEMENT AND FOUND DPI INDICATOR EXTENDED. REMOVED FILTER AND INSPECTED NO DEFECTS NOTED. MAGNETIC PLUG CLEAN. REPLACED FILTER. LEAK CHECK OF APUAug 5, 2016 · N469AS · Boeing 737990ERSDR AALA20160809004Switch · leakingAT GATE AN ACRID ODOR WAS REPORTED WITH APU SUPPLYING THE LEFT PACK. AIRCRAFT GROUNDED. MAINTENANCE FOUND THE APU OIL SEQUENCING SWITCH LEAKING. REMOVED AND REPLACED SWITCH. SYSTEM CHECKED NORMAL.Aug 3, 2016 · N964TW · Doug DC983SDR AALA20160804013Switch · leakingFLIGHT CREW REPORTED SMOKE IN THE CABIN AFTER APU START AT GATE. MAINTENANCE FOUND APU OIL COOLER LEAKING OIL. AIRCRAFT GROUNDED. R & R SWITCH IAW AMM 49-90-03.Aug 2, 2016 · N955U · Doug DC982SDR AALA201607319003O-Ring · missingAFTER LANDING, FUMES NOTED IN CABIN & FLIGHT DECK WITH APU SUPPLYING BLEED PRESSURE. SWITCHED TO ENGINE BLEED NO DIFFERENCE. STARTED GETTING THE ODOR INITIALLY WHILE STOPPED ON RAMP. MAINTENANCE HAS ISOLATED THE SOURCE OF THE ODOR TO THE APU AND HAS PLACED IJul 30, 2016 · N765US · Airbus A319112SDR HALA2016072400144Oil Cooler · malfunctionedAIR TURNBACK TO DEPARTURE DUE TO THE APU FAULT DURING APU VERIFICATION FLIGHT. REPLACED ECB AND APU OIL COOLER.Jul 23, 2016 · N388HA · Airbus A330243SDR AALA201607259004Apu · overservicedFUEL TYPE ODOR WAS REPORTED BY FLIGHT CREW UPON BOARDING THE AIRCRAFT PRIOR TO AND DURING THE BOARDING PROCESS. SOME MEMBERS OF THE FLIGHT CREW AND SEVERAL PASSENGERS REPORTED FEELING ILL DUE TO THE ODOR AND EVERYONE DEPLANED THE AIRCRAFT. AIRCRAFT GROUNDED.Jul 22, 2016 · N150UW · Airbus A321211SDR AALA201607199013Oil Cooler · leakingAIRCRAFT WAS GROUNDED. FLIGHT CREW REPORTED A DIRTY SOCK, MUSTY ODOR COMING FROM THE AC VENTS WHEN APU BLEED WAS TURNED ON WHILE BOARDING THE ACFT AT THE GATE. MAINTENANCE FOUND OIL IN THE APU PLENUM AND REPLACED THE APU OIL COOLER IAW 49-91-44, THE APU OILJul 18, 2016 · N105UW · Airbus A320214SDR AALA201607199012Cooling Fan · leakingAIRCRAFT WAS GROUNDED. FLIGHT CREW REPORTED A DIRTY SCOCK, MUSTY ODOR COMING FROM THE AC VENTS WHEN APU BLEED WAS TURNED ON WHILE BOARDING THE ACFT AT THE GATE. MAINTENANCE FOUND OIL IN THE APU PLENUM AND REPLACED THE APU OIL COOLER IAW 49-91-44, THE APU OIJul 18, 2016 · N105UW · Airbus A320214SDR ASAA2016071717409Warning Light · false activationDURING TAXI TO THE GATE, APU MAINTENANCE LIGHT ILLUMINATED. ACRT GROUNDED. APU BITE REPORTS LOW OIL QUANTITY. COMPLIED WITH FIM 49-90 TASK 804. VERIFIED OIL SIGHT GLASS ON APU SHOWS FULL. IAW FIM TASK 49-60 FAULT WAS A NUISANCE MESSAGE.Jul 17, 2016 · N495AS · Boeing 737990ERSDR ASAA2016071717408Oil Filter · damagedAPU OIL FILTER RED INDICATOR FOUND MISSING. ACFT GROUNDED. REMOVED AND REPLACED APU OIL FILTER INDICATOR AND FILTER ELEMENT IAW AMM 49-91-12. LEAK CHECKED GOOD, NO DEFECTS NOTED.Jul 17, 2016 · N413AS · Boeing 737990ERSDR DALA2016071805386Oil Cap · detachedRETURNED DUE TO SMOKE IN THE AFT CABIN. MAINTENANCE FOUND APU INLET CONTAMINATED WITH OIL. MAINTENANCE FOUND OIL CAP OFF. CLEANED APU INLET AND DUCTS AND COMPLIED WITH DUCT BURNOUT. AIRCRAFT WAS RETURNED TO SERVICE.Jul 16, 2016 · N933DL · Doug MD88SDR ASAA2016071517400Module · failedCOLD START TRIED AT FL 380. APU FAULT LIGHT ILLUMINATED. QRH FOLLOWED, APU SHUTDOWN NORMAL. ACFT GROUNDED. IAW TSR908082, REMOVED AND REPLACED APU LUBE MODULE, IAW AMM 49-91-11. OPS CHECKED GOOD, NO LEAKS NOTED.Jul 15, 2016 · N519AS · Boeing 737890SDR AALA201607159001Apu · overservicedAIRCRAFT HAS FOUL ODOR IN MAIN CABIN ON THE GROUND. AIRCRAFT GROUNDED. MAINTENACE FOUND THE APU OIL OVER SERVICED AND REMOVED 1 PINT OF OIL.Jul 14, 2016 · N184US · Airbus A321211SDR REXA2016071301292Oil Cooler · inoperativeAPU OIL PRESS CAUTION MESSAGE INFLIGHT. R&R APU FAN & OIL COOLER IAW 49-52-05 AND 49-91-07. OPS CHECKED GOOD.Jul 13, 2016 · N8986B · Cndair CL6002B19SDR AALA201607149002Seal · leakingFLIGHT ATTENDANT REPORTED A STRONG DIRTY SOCK ODOR FROM MID CABIN AFT, DURING DESCENT THRU TAXING TO GATE. AIRCRAFT WAS GROUNDED. MAINTENANCE FOUND OIL LEAK AT APU GENERATOR. REPLACED THE SEALS ON APU GENERATOR IAW AMM 24-23-51. A SATISFACTORY OPERATIONALJul 13, 2016 · N833AW · Airbus A319132SDR ASAA2016071217351Sensor · failedDURING CHECK, FOUND CDU APU OIL QUANTITY SAYS ADD OIL, APU SIGHT GLASS WAS FULL. ACFT GROUNDED. REMOVED AND REPLACED APU OIL LEVEL SENSOR, IAW AMM 49-94-11. OPS CHECKED GOOD. LEAK CHECKED GOOD.Jul 12, 2016 · N483AS · Boeing 737990ERSDR AALA201607119005Oil Cooler · leakingON ENTERING AIRCRAFT DURING THE BOARDING PROCESS A FLIGHT ATTENDANT AND THE FIRST OFFICER REPORTED DIRTY SOCK ODOR. AIRCRAFT GROUNDED. MAINTENANCE DETERMINED THAT THE CABIN ODOR WAS FROM THE APU BLEED AIR SYSTEM AND SUSPECT THE APU OIL COOLER IS THE SOURCE.Jul 10, 2016 · N122US · Airbus A320214SDR ASAA2016071017333Oil Filter · contaminatedDURING WALK AROUND, FOUND APU OIL FILTER DPI POPPED AND DAMAGED. ACFT GROUNDED. VERIFIED MAG DRAIN PLUG HAS NO CONTAMINATION, IAW AMM 49-91-81. REMOVED APU FILTER AND VERIFIED NO CONTAMINATION. REMOVED AND REPLACED OIL FILTER DPI INDICATOR AND INSTALLED NEWJul 10, 2016 · N532AS · Boeing 737890SDR AALA201607069011O-Ring · missingSMOKE COMING FROM APU TAILPIPE ON SHUTDOWN. MAINTENANCE FOUND APU OIL LEVEL LOW AND OIL IN TAIL PIPE. MAINTENANCE FOUND THE OIL LEAK FROM STARTER PAD DUE TO A MISSING O-RING ON THE STARTER WHICH RESULTED IN THE REPLACEMENT OF THE STARTER IAW AMM 49-42-51. AJul 5, 2016 · N732US · Airbus A319112SDR ASAA2016063017235Thermocouple · malfunctionedINTERMITTENT APU BLUE MAINT LIGHT. ACFT GROUNDED. REPLACED NR 1 AND 2 EGT THERMOCOUPLE IAW AMM 49-71-21. OPS CHECKED OK.Jun 30, 2016 · N431AS · Boeing 737990ERSDR ASAA2016062417156Filter · defectiveWHILE INSPECTING APU OIL QTY, FOUND APU OIL FILTER DPI EXTENDED. ACFT GROUNDED. ACCOMPLISHED APU OIL FILTER INDICATION INSPECTION IAW AMM 49-91-13. FOUND OIL FILTER DPI EXTENDED, INSPECTED APU MAGNETIC DRAIN PLUG IAW AMM 49-91-81, NO CONTAMINATION NOTED, REJun 24, 2016 · N570AS · Boeing 737890SDR G73R2016071600002Apu · odorOIL SMELL IN CABIN AFTER APU START.Jun 23, 2016 · N430W · Bombdr BD1001A10SDR AALA201606219004Fillercap · leakingAIRCRAFT WAS GROUNDED. WHEN EXTERNAL AIR WAS REMOVED AND APU BLEED AND PACK 1+2 COOLING A/C AT GATE, A STRONG DIRTY SOX ODOR WAS OVERWHELMING. MAINTENANCE DETERMINED THAT THE SOURCE OF THE ODOR WAS THE APU AND WAS PLACED ON MEL. MAINTENANCE FOUND EVIDENCE OJun 20, 2016 · N655AW · Airbus A320232SDR AALA201606199009Module · leakingAIRCRAFT WAS GROUNDED, CREW REPORTED A STRONG ODOR TROUGH ACFT CABIN THAT SMELLED LIKE PLASTIC OR CRAYONS DURING THE BOARDING PROCESS WITH APU BLEED AIR ON. THE ACFT WAS DEPLANED AND REMOVED FROM SERVICE. MAINTENANCE FOUND AN OIL LEAK AT THE APU LUBE MODULE Jun 17, 2016 · N184US · Airbus A321211SDR AALA201606169002O-Ring · damagedAIRCRAFT WAS GROUNDED: CREW REPORTED THAT DURING THE BOARDING PROCESS WITH THE APU BLEED AIR ON, THE PACKS WERE EMITTING A BAD ODOR CAUSING EYE IRRITATION. MAINTENANCE FOUND THE APU SCAVENGE FILTER LEAKING OIL AND REPLACED THE O-RING IAW AMM 49-91-41. THE SUJun 15, 2016 · N191UW · Airbus A321211SDR ASAA2016061317051Control Valve · failedAPU HAS HISTORY OF FAULT CODE 49-41005, HIGH OIL TEMP SHUTDOWN. ACFT GROUNDED. R & R TEMP CONTROL VALVE, REF AMM 49-91-21. OPS AND LEAK CHECK GOOD.Jun 13, 2016 · N568AS · Boeing 737890SDR ASAA2016061217019Oil Cooler · failedWHILE AT THE GATE ON APU POWER APU SHUTDOWN. FAULT LIGHT ILLUMINATED AFTER SEVERAL MINUTES THE FAULT LIGHT WENT OUT. THE APU SWITCH WAS IN THE OFF POSITION MOVED THERE AFTER THE APU SHUTDOWN. ACFT GROUNDED. R & R APU OIL COOLER, REF AMM 49-91-41-400--801 & Jun 12, 2016 · N568AS · Boeing 737890SDR ASAA2016060616960Oil Cooler · dirtyAFTER ENGINE SHUTDOWN, APU SHUT DOWN AUTOMATICALLY WITH FAULT LIGHT ILLUMINATED. FOLLOWED QRH. GROUND POWER ESTABLISHED. ACFT GROUNDED. APU BITE SHOWS FAULT 49-91005 HIGH OIL TEMP. ACCOMPLISHED FIM TASK 49-91-41-200-801. FOUND OIL COOLER DIRTY. CLEANED USIJun 6, 2016 · N568AS · Boeing 737890SDR VNAA2016053100034Apu · faultyAPU LOW OIL PRESSURE CAUTION MESSAGE. THE CREW DIVERTED TO NEAREST FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, PROPERLY SERVICED THE APU AND PERFORMED CHECKS IAW THE AMM. THE ACFT WAS RELEASED FOR SERVICE.May 31, 2016 · N247JS · Cndair CL6002B19SDR AALA20160527004Apu · contaminatedSMOKE & ODOR REPORTED IN THE CABIN. IDENTIFIED APU OIL INGESTION AS SOURCE. REMOVED AND REPLACED AUXILIARY POWER UNIT IAW MCM 49-96-83. OPERATIONAL CHECK GOOD. AIRCRAFT WAS GROUNDED.May 26, 2016 · N9622A · Doug DC983SDR UIEA2016050900277Oil System · lowSTATUS MSG APU OIL QTY. SERVICED APU OIL TO FULL IAW AMM 12-13-04 & LEAK CHECKS & OPERATIONS CHECKS OK ON GND. APU HOURS ARE 229.0.May 8, 2016 · N640GT · Boeing 7673S1SDR HNAA2016050900139Line · bentJET FUEL ODOR IN CABIN. AFTER MAINTENANCE INSPECTION, FOUND OIL RESIDUE ON RECIRC FAN AND ADJACENT DUCT WORK. AUXILIARY POWER UNIT. FOUND TEFLON CONNECTOR HOSE ON APU OIL DRAIN LINE ABOVE RECIRC FAN TO BE BENT IN A BLOCKED POSITION. REMOVED HOSE AND REPOSIMay 7, 2016 · N327EN · Dhav DHC8311SDR ASAA2016050416663Pressure Switch · failedAPU ON LINE, SUPPLYING POWER, APU DROPPED OFF LINE NO ELECTRICAL POWER, FAULT LIGHT ILLUMINATED. ACFT GROUNDED. INTERROGATED FMC AND FOUND APU FAULT CODE 49-94299 STARTER GENERATOR OIL FILTER CLOGGED". ACFT CHECKED AND RELEASED IAW MEL 49-1B, APU INOPERATIVMay 4, 2016 · N431AS · Boeing 737990ERSDR F3LA2016050600045Apu · overservicedREFERENCE LOG PAGE 843531, DURING CRUISE FORTY FIVE MINUTES INTO THE FLIGHT, THE FLIGHT CREW NOTICED AN INTENSE BURNING SMELL IN THE CABIN. THE FLIGHT CREW DECLARED AN EMER & THE ACFT DIVERTED. COMPLIED WITH FUMES IN THE CABIN OIL SMOKE AT THE AUXILIARY POWEMay 4, 2016 · N954FR · Airbus A319112SDR AALA201605069002O-Ring · missingSTRONG OIL MIST ODOR IN CABIN WITH APU BLEED ON. ODOR GRADUALLY DISSIPATES WHEN APU BLEED IS SWITCHED OFF. FOUND APU STARTER O RING MISSING. INSTALLED O RING & ACCOMPLISHED A SATISFACTORY LEAK & OPERATIONAL CHECK. NO ODORS NOTED.May 4, 2016 · N747UW · Airbus A319112SDR AALA20160510010B-Nut · looseAIRCRAFT WAS GNDED, FLIGHT ATTENDANTS REPORT VERY STRONG ODOR, MUSTY SOUR SMELL, FROM MID CABIN AFT THAT BEGAN DURING TAKEOFF ROLL DIMINISHED DURING CLIMB THEN INCREASED DURING DESCENT. ACCOMPLISHED CARD 21-96-01 & FOUND AN OIL LEAK AT THE APU LOW OIL PRESS May 2, 2016 · N9677W · Doug DC983SDR AALA201605029013Seal · leakingAIRCRAFT WAS GNDED. FLIGHT ATTENDANTS REPORT FOUL SMELL THROUGHOUT CABIN. ACCOMPLISHED TASK CARDS 26L00021001. TROUBLE SHOT CABIN AIR QUALITY, 26L00021002, APU SMELL IN CABIN & 26L0002004, DECONTAMINATION OF ECS, & DETERMINED THAT THERE WAS AN OIL LEAK COMIMay 1, 2016 · N723UW · Airbus A319112SDR ASAA2016042916591Module · failedINCOMPLETE APU COLD SOAK START ATTEMPT. 1ST ATTEMPT AT FL360 RESULTED IN A 1000 EGT SPIKE AND FAULT LIGHT W/AUTO SHUTDOWN. DID NOT REATTEMPT. ACFT GROUNDED. IAW ENGINEERING REQUEST, REPLACED APU LUBE MODULE, REF AMM 49-91-11. NO LEAKS NOTED. PERFORMED APApr 29, 2016 · N581AS · Boeing 737890SDR AALA201604309003O-Ring · leakingAIRCRAFT WAS GNDED. CABIN ODOR COMING FROM PACK SYS. ODOR WAS SEVERE & TOXIC NATURE. FOUND AN OIL LEAK AT THE APU STARTER & REPLACED THE O RINGS ON THE STARTER & STARTER ADAPTER IAW AMM 49-42-51. A SATISFACTORY LEAK & OPERATIONAL CHECK WAS ACCOMPLISHED. NApr 29, 2016 · N162UW · Airbus A321211SDR AALA20160428003Chip Detector · leakingAIRCRAFT WAS GNDED. AIR INTERRUPT, EMER DECLARED, LANDING UNEVENTFUL. & ACFT NOT OVERWEIGHT. DURING CLIMB, THE FLIGHT ATTENDANTS REPORTED SMOKE & FUMES IN THE CABIN. FUMES DISSIPATED DURING RETURN TO FIELD. ACCOMPLISHED CAR MCM 21-96-01 & FOUND APU OIL INGEApr 28, 2016 · N467AA · Doug DC982
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