N448AS

Service difficulty reports · 156

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. 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 n_number = 'N448AS' AND registry_match = 'registration'
  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 ASAA2019051329339Line · damagedNR 1 ENGINE IDG OIL COOLER FUEL OUT LINE DAMAGE. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENGINE IDG OIL COOLER FUEL OUT LINE PER AMM 73-11-06 REQUIRES TEST 3A LEAK CHECK. LEAK CHECK GOOD.May 13, 2019 · N448AS · Boeing 737990ER · Engine Fuel/Oil CoolerSDR ASAA2019051229338Pump · leakingWHILE SERVICING NR 1 ENGINE OIL NOTED HEAVY FUEL SMELL IN COWLING. GROUNDED - YES. FOUND FUEL LEAKING FROM NR 1 ENGINE GEAR STAGE PRESSURE RELIEF VALVE DURING IDLE RUN. REQUIRES FUEL FUMP CHANGE. REMOVED & REPLACED NR 1 FUEL PUMP REF AMM 73-11-01-400-801-F00 May 12, 2019 · N448AS · Boeing 737990ER · Engine Fuel PumpSDR ASAA2019041979042Control Valve · failedLEVEL AT CRUISE AT 34000 THE CABIN CLIMB GUAGE SHOWED +/- 500 FPM. LEFT DUCT PRESSURE FLUCTUATED FROM 45/40 PSI. R DUC WAS STEADY AT 45 PSI. LEVEL AT 24000 CABIN CLIMB SHOWED +/- 300 FPM. GROUNDED - YES. DURING CHECK FOUND #1 TCV FLUCTUATING (OPEN/CLOSE) CAUSIApr 17, 2019 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2019032128716Warning System · false activationFO'S ND HAD VTK AND MAP FLAG WITH SINGLE FMC OPERATION IN SCRATCH PAD THEN RESTORED ITSELF. GROUNDED - YES. ACCOMPLISHED FMC BITE REF FIM 34-61 TASK 801, FMC BITE & OPERATION NORMAL.Mar 21, 2019 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019021528203Warning System · false activationHF 2 FAIL MESSAGE ILLUMINATED. GROUNDED - YES. OPENED, THEN RESET HF 2 C/B ON P6-1 D2. FAIL MESSAGE RMVD. NR 2 HF OPS NML REF AMM 23-11-00. ETOPS GND VERIFICATION TEST SUCCESSFUL.Feb 15, 2019 · N448AS · Boeing 737990ER · HF Communications SystemSDR ASAA2019012327900Filter · dirtyON TAXI OUT CONT CAB ZONE TEMP LIGHT ILLUMINATED. GROUNDED - YES. REF FIM 21-61-00, BOTH CONTROLLERS SHOW NO FAULTS. REF AMM 21-61-00, CLEANED CONTROL CABIN TEMP SENSOR FILTER. OPS TEST NORMAL. THIS CLEARS MEL 21-21G.Jan 23, 2019 · N448AS · Boeing 737990ER · Cabin Temperature SensorSDR ASAA2019011027770Wire Harness · defectiveWHILE ACCOMPLISHING T/C 78273000 FAULT CODE APPEARED ON NR 1 ENGINE #76-31361, THE START LEVER SIGNALS DISAGREE, LONG TIME. MUST BE CORRECTED IN 450 FLT HRS. GROUNDED - YES. HIGH RESISTANCE D10920 Y2 TO GROUND WITH START LEVER AT IDLE REF FIM 76-11 TASK 801 & Jan 10, 2019 · N448AS · Boeing 737990ER · Engine Control System WiringSDR ASAA2018120127173Valve · failedLEFT PACK LIGHT ILLUMINATES DURING RECALL. GROUNDED - YES. REMOVED & REPLACED LEFT PACK TCV, V139, REF AMM 21-51-10-400-801. LEAK CK GOOD PER THE SAME. ACCOMPLISHED PFTC BITE TEST REF AMM 21-61-00-740-801-002. GROUND TEST PASSED WITH NO FAULTS.Dec 1, 2018 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018120327172Control Valve · faultedLEFT PACK LIGHT ON RECALL DURING AFTER START CHECK. EXTINGUISHED WHEN MC PRESSED (PRIMARY OR SECONDARY CONTROLLER FAILURE). GROUNDED - YES. BITE OF LPFTC SHOWS TEMP CTR VALVE FAULT WITH CODES 21-51264 AND 21-51267. ACCOMPLISHED B737-900 FIM 21-53 TASK 803. FAUNov 30, 2018 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018112627158Warning System · false activationWHILE ACCOMPLISHING T/C 78273000 ON NR 1 ENGINE FOUND CODE 76-31361 THE START LEVER SIGNALS DISAGREE, LONG TIME FAULT. GROUNDED - YES. ON DEFERRAL. PERFORMED FIM 76-11 TASK 801. EEC TEST PASSES, NO FAULTS FOUND IN RECENT FAULTS OR FAULT HISTORY MENU. PERFORMEDNov 26, 2018 · N448AS · Boeing 737990ER · Engine ControlsSDR ASAA2018102926665Warning System · false activationLT PACK LIGHT ON WITH M/C RECALL. RESETS WITH M/C RESET. GROUNDED - YES. PERFORMED PFTC BITE, NO FAULTS, PAC LIGHT REMAINS EXTINGUISHED ON RECALL. HAS NO HISTORY.Oct 29, 2018 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018102326574Warning System · false activationWHILE PERFORMING T/C 78273000 FOUND LONG TIME FAULT ON ENGINE NR 1 MSG NBR 76-31361. THE START LEVER SIGNALS DISAGREE. GROUNDED - YES. ACCOMPLISHED FIM 76-11 TASK 801 NR 1 ENGINE "START LEVER SIGNAL DISAGREE" FAULT ISOLATION (MSG 76-31361) & T/C 78273000, BOTHOct 19, 2018 · N448AS · Boeing 737990ER · Power LeverSDR ASAA2018080625663Radar · malfunctionedWEATHER RADAR AN ERROR MESAGE IAMLEIN AVTS APPEARS ACCURATE WHEN TILT MODE IS IN MANUAL. ACFT GROUNDED. RESET THE SYSTEM, OPS CHECKED GOOD IAW AMM 34-43-00-730-802-001 PARAGRAPH G, ANTENNA TILT TEST, NO AIRCRAFT CONFIGURATION CHANGE.Aug 2, 2018 · N448AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2018061855097Start Valve · intermittentNR 2 START VALVE OPEN REMAINED ILLUMINATED AFTER ENGINE START. ACFT GROUNDED. PERFORMED AN OPS CHECK OF THE START VALVE, VISUALLY WATCHED THE VALVE`S OPERATION, NO DEFECTS NOTED, START VALVE LIGHT OPERATED NORMALLY, CAN NOT DUPLICATE. REMOVED AND REPLACJun 15, 2018 · N448AS · Boeing 737990ER · Engine Start Valves/ControlsSDR ASAA2018061125034Connector · dirtyNR 2 ENGINE START VALVE OPEN. GROUNDED - YES. CLEANED CONNECTOR DP1202 ON NR 2 ENGINE STARTER VALVE, RECONNECTED CONNECTOR DP1202, PERFORMED ENGINE RUN WITH CREW, OPS CK GOOD. REF FIM 80-07 TASK 809. START VALVE OPS CK GOOD.Jun 11, 2018 · N448AS · Boeing 737990ER · Engine Start Valves/ControlsSDR ASAA2018053194861Starter · failedLEFT ENGINE WILL NOT OBTAIN MORE THAN 65% N2 DURING START. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 ENGINE STARTER IAW AMM 80-11-01/401. PERFORMED IDLE POWER LEAK CHECK. LEAK CHECK GOOD. NO LEAK DETECTED IAW AMM 71-00-00-700-801.May 29, 2018 · N448AS · Boeing 737990ER · Engine StarterSDR ASAA201805224725Ecs · malfunctionedFA REPORTED WERE UNABLE TO COOL ROWS 6 - 16 INFLIGHT, UNTIL THE LAST HOUR OF FLIGHT. ACFT GROUNDED. NO HISTORY LAST 60 DAYS. PFTC FAULT HISTORY LAST LEG SHOW R: 21-51123, L: 21-51123 & 21-51117. ALL FAULTS SHOW AS INTERMITTENT, COUNT 1 & FAULT STATE. RECMay 20, 2018 · N448AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018021223523Warning Light · false activationCONTROL CABIN ZONE TEMP ILLUMINATED ON RECALL. ACFT GROUNDED. INTERROGATED THE LEFT PTFC, FOUND FAULT 21-51123. PERFORMED FIM 21-62, TASK 893, BITE CHECK PASSED. FOUND TO BE INTERMITTENT FAULT.Feb 12, 2018 · N448AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018020823475A/C Pack · unknownMIDWAY THRU FLIGHT, THE F/A COMPLAINED OF EXCESSIVE CABIN HEAT, HAD TO POSITION THE FWD & AFT CABIN TEMP CONTROLS TO THE FULL COLD STOP, ANYTHING ABOVE THAT WOULD CAUSE EXCESSIVE HEAT. OPS WORKING NORMAL. ACFT GROUNDED. PERFORMED A CABIN TEMP CONTROLLER BFeb 8, 2018 · N448AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018011923216Warning System · false activationAUTO FAIL LIGHT ILLUMINATED IN CRUISE ALTN CONTROLLER WORKED NORMALLY. GROUNDED - YES. COMPLIED WITH FIM 21-31 TASK 827, NO FAULTS NOTED, FAULTS CLEARED. COMPLIED WITH DCPC BITE IAW FIM 21-31 TASK 801, NO CURRENT FAULTS OPS CHECK GOOD. OK TO CONTINUE.Jan 19, 2018 · N448AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA2018011923215Outflow Valve · failedAUTO FAIL LIGHT ILLUMINATED IN CRUISE ALTN CONTROLLER OPERATED NORMALLY. GROUNDED - YES. NR 2 DPCP SHOWS "OFV LRU FAIL" AS AN EXISTING FAULT AND PREVIOUS FLIGHT LEG, REF FIM 21-31 TASK 801. AC CHECKED AND RELEASED PER MEL 21-14C, NR 2 AUTOMATIC CABIN PRESSURIZJan 19, 2018 · N448AS · Boeing 737990ER · Pressure Regulator/Outflow ValveSDR ASAA2018011823217Warning System · false activationAUTO FAIL LIGHT ILLUMINATED @FL410. FOLLOWED QRH PROCEDURE. GROUNDED - YES. CYCLED CONTROLLER FAULT CLEARED - TESTS GOOD. NO HISTORY.Jan 18, 2018 · N448AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA2017122823024Lens · brokenAFT GALLEY EMERGENCY EXIT SIGN OVER R2 DOOR IS BROKEN. ACFT GROUNDED. REPLACED THE LENS. OK FOR SERVICE.Dec 28, 2017 · N448AS · Boeing 737990ER · Emergency LightingSDR ASAA2017121322903Heater · failedLEFT ELEVATOR PITOT HEAT INOP. GROUNDED - YES. REMOVED LH FEEL SYSTEM PITOT PROBE PER B737-900 AMM 27-31-94-000-801. INSTALLED SERVICEABLE PITOT PROBE REF AMM TASK 27-31-94-400-801. OP'S CHECKED NORMAL. LEAK CHECKED NORMAL.Dec 13, 2017 · N448AS · Boeing 737990ER · Pitot/Static Anti-Ice SystemSDR ASAA2017072921490Transceiver · failedNR 2 HF WILL NOT TRANSMIT. EARLIER SELCAL CHECK WAS SUCCESSFUL. ACFT GROUNDED. PERFORMED FIM 23-11 TASK 801, NO FAULTS FOUND. REPLACED THE NR 2 HF TRANSCIEVER IAW AMM 23-11-21-000-801, AND 23-11-21-400-801. OPS CHECKED GOOD. PERFORMED TEST OF HF COMM SYS IAJul 29, 2017 · N448AS · Boeing 737990ER · HF Communications SystemSDR ASAA2017071721405Shim · wornALL 24 FAN BLADE SHIMS ON THE NR 1 ENGINE WERE WORN. ACFT GROUNDED. REMOVED AND REPLACED THE FAN BLADE SHIMS.Jul 17, 2017 · N448AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2017070421308Fmc · malfunctionedRIGHT FMC FAILED DURING CRUISE. ACFT GROUNDED. PERFORMED FMC BITE. NO FAULTS FOUND. RESET THE CIRCUIT BREAKER FOR THE NR 2 FMC. OPS NORMAL IAW AMM 34-61-00.Jul 4, 2017 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017030720075Satcom · malfunctionedSATCOM NR 2 TRANSMISSION WEAK & UNREADABLE, SATCOM NR 1 OPS CHECKED GOOD. ACFT GROUNDED. SUCCESSFULLY ESTABLISHED COMMUNICATIONS WITH DISPATCH ON NR 2 SATCOM. ETOPS GROUND VERIFICATION TEST NORMAL IAW AMM 23-15-00.Mar 7, 2017 · N448AS · Boeing 737990ER · Communications SystemSDR ASAA2017011219379Fmc · failedLEFT FMC FAILURE. GROUNDED - YES. REMOVED AND INSTALLED NEW NR 1 FMC COMPUTER. REF AMM 34-61-02. XLOADED COMPLETED AND PERFORMANCE FACTOR SET. SYS CKS NORMAL.Jan 12, 2017 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017011119325Fmc · malfunctionedNO FMC PROMPT ON EITHER CDU. ACFT GROUNDED. CYCLED BOTH FMC COMPUTERS IAW FIM 34-61 TASK 807. FMC 1 & 2 RETURNED TO NORMAL. OPS NORMAL.Jan 11, 2017 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016123019215Fmc · malfunctionedNO FMC PROMPT ON BOTH CDU'S, UNABLE TO INITIALIZE IRU'S. GROUNDED - YES. REINITIATED FMC COMPUTERS. REENTERED IRU POSITIONS. IRU POSITION VERIFIED AND FMC PROMPTS OPERATE NORMALLY, REF AMM 34-21-00.Dec 30, 2016 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016120918986Controller · faultedL-1 WINDOW HEAT CONTROLLER FAULTED. ACFT GROUNDED. REMOVED, REPLACED AND OPS TESTED WINDOW HEAT CONTROLLER IAW AMM 30-41-11.Dec 9, 2016 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2016112618820Indicator · malfunctionedDURING ELECTRICAL POWER UP, NO FMC PROMPT ON CAPTAIN'S AND FIRST OFFICER`S CDU WITH FMC TRANSFER SWITCH IN BOTH, PLACED FMC TRANSFER SWITCH TO RIGHT, FMC PROMPT APPEARS. ACFT GROUNDED. ACCOMPLISHED FMCS BITE, IAW FIM 34-61-00-810-801 OF LEFT FMC. NO DEFECTS Nov 26, 2016 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016112618817Controller · faultedLEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED ON THE GROUND. REFERRED TO QRH AND SHUT OFF WINDOW HEAT. GROUNDED - YES. WINDOW HEAT CONTROLLER FFR LOGGED WCHU FAULT. COMPLETED FIM TASK 30-41 TASK 807 AND 801. OK FOR SERVICE.Nov 26, 2016 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2016111318657Fmc · failedFL 350 .76 MACH `A` ENGAGED, LNAV/VNAV, FMC SOURCE SWITCH BOTH ON R DUE TO MEL 34-36J. RIGHT FMC SUBSEQUENTLY MOMENTARILY FAILED. VTK FLAGS ON BOTH MAP DISPLAY AND FMC, P/RST LIGHT ILLUMINATED, A/C REVERTED TO EWS AND ALT HOLD. A/P `A` REMAINED ENGAGED. MALFUNNov 13, 2016 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016111218633Fmc · failedCAPTAIN'S FMC FAIL. ACFT GROUNDED. FLIGHT FAULT LOGGED PRESSURE POS LAT FAULT. LEFT FMC TESTED IAW AMM 34-61-00 AND OPS CHECKED GOOD, NO CURRENT FAULT. GROUND VERIFICATION TEST OPS CHECK NORMAL.Nov 12, 2016 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016101818391Warning Light · false activationCONTROL CABIN ZONE TEMP ILLUMINATED ON RECALL, EXTINGUISHES WITH M/C RESET. ACFT GROUNDED. PERFORMED LEFT PACK TEMPERATURE CONTROL BITE PROCEDURE IAW FIM TASK 21-62 TASK 801, NO FAULTS NOTED, BITE CHECKS GOOD.Oct 18, 2016 · N448AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2016101118274Warning Light · false activationRIGHT SIDE WINDOW OVERHEAT M/C ON RECALL. RAN QRH & PROBLEM RESOLVED. ACFT GROUNDED. COMPLIED WITH FIM 30-41 TASK 801, NO FAULTS NOTED, CHECK GOOD.Oct 11, 2016 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2016092618134Warning Light · false activationELEC LIGHT ILLUMINATED. ACFT GROUNDED. ACCOMPLISHED FIM 24-34 TASK 802 FOR SPCU INOP FAULT, FAULT CLEARED.Sep 26, 2016 · N448AS · Boeing 737990ER · Central WarningSDR ASAA2016090217900Light · inoperativeMCP PANEL HAS NO LIGHTS. ACFT GROUNDED. CYCLED POWER TO MCP & ALL LIGHTS RETURNED TO NORMAL. PERFORMED FIM 22-11 TASK 803 ALL TESTS PASSED. PERFORMED DFCS LRU INTERFACE TEST FOR MCP IAW AMM 22-11-34 ALL TESTS PASSED & HGS SYSTEM TEST PASSED IAW AMM 34-36-00.Sep 2, 2016 · N448AS · Boeing 737990ER · Autopilot SystemSDR ASAA2016081317675Control Valve · failedRT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED. ACCOMPLISHED PACK FLOW TEMP CONTROLLER BITE PROCEDURE. LEFT CONTROLLER GROUND TEST PASS, NO FAULTS NOTED. RIGHT CONTROLLER SHOWED FAULT CODES 21-51510 TEMP CONTROL VALVE, 21-51260 MOTOR OPEN AND 21-51267 TAug 13, 2016 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2016072217470Display · malfunctionedDURING DESCENT, FIRST OFFICER`S CDU WENT BLANK AND EVERY LIGHT ON THE KEY PAD ILLUMINATED. THERE WAS NO VTK AND THE MAPS WERE OTHERWISE NORMAL. AFTER A WHILE THE CDU DISPLAYED A "BIT: PASS" AND THE CDU RETURNED TO NORMAL. ACFT GROUNDED. COULD NOT DUPLICATEJul 22, 2016 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016071917426Autopilot Sys · malfunctionedIN LNAV/VNAV MODE, AUTOPILOT ENGAGED, FAILED TO CAPTURE WAYPOINT ALTITUDE AND AIRSPEED ON ARRIVAL. ON APPROACH, APPROACH MODE WOULD NOT ARM. AUTOPILOT A USED FOR ALL. ACFT GROUNDED. AFTER ARRIVAL FOUND NR 2 NAV HAD VOR FREQ PREVENTING APPROACH MODE. NO FAJul 19, 2016 · N448AS · Boeing 737990ER · Autopilot SystemSDR ASAA2016071017331Computer · failedAFTER LANDING ROLLOUT FMC P/RST AND GROUND PROXIMITY INOPERATIVE LIGHT ILLUMINATED WITH VTK MESSAGE ON CAPTAINS INBD DU. NO FMC OPTION AT L1 ON EITHER CDU'S. ANOMALIES CONTINUED INTERMITTENTLY AT THE GATE AFTER SHUTDOWN. BOTH MAP MODES DISPLAYED DATA. ACFTJul 10, 2016 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016071017329Fmc · malfunctionedON LEVEL OFF THE CAPTAIN SIDE ND DISPLAYED VTK AND CAPTAIN SIDE MCDU SHOWED THE MENU PAGE WITH NO FMC OPTION. THE LEFT FMC RESTORED ITSELF WITHIN 1 MINUTE ON ITS OWN. LATER TRIED TO SELECT DIRECT , ERROR MESSAGE "INVALID MOD PLAN". SELECTED BOTH ON R FOR FJul 10, 2016 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016062317149Unknown · malfunctionedAT CRUISE, CAPT HSI HAD VTK AND LOST BOTH MCDU'S. PULLED OUT QRH AND BY THE TIME IT WAS LOOKED UP, VTK, DISAPPEARED AND BOTH MCDU'S CAME BACK ONLINE. SUSPECT FAILURE, TEMPORARY, OF LT FMC. ACFT GROUNDED. PERFORMED BITE CHECK OF FMC'S, LT & RT AND OF INPUTSJun 23, 2016 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016062217121Warning System · false activationON RECALL GOT CONTROLLER CABIN ZONE TEMP LIGHT. IT EXTINGUISHED WHEN MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED BITE PROCEDURE ON PFTC IAW FIM 21-62-00-810-801. NO CURRENT FAULTS FOUND AT THIS TIME. PERFORMED BITE PROCEDURE ON FAULT HISTORY FOUND ON LJun 22, 2016 · N448AS · Boeing 737990ER · Cabin Temperature IndicatorSDR ASAA2016051816767Warning Light · false activationCONTROLLER CAB ZONE TEMP LIGHT ON RECALL. RESETS ON MASTER CAUTION RESET. ACFT GROUNDED. F/D SELECTOR FAULT, 21-51311 CODE. RESET IAW FIM 21-62 TASK 805. PTC BITE OPS NORMAL IAW FIM 21-62, TASK 801.May 18, 2016 · N448AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2016050116582Valve · faultedM/C RECALL, CONT CABIN ZONE TEMP LIGHT ILLUMINATES ON CRUISE. EXTINGUISHES ON RESET. ACFT GROUNDED. FOUND MASTER CAUTION RECALL WILL NOT WILL NOT RECALL ZONE TEMP. FAULT NO LONGER PRESENT. CLEANED ALL 3 CABIN TEMP SENSORS FILTERS IAW MM 21-61-06-100-801. ACMay 1, 2016 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2016041816447Transmitter · failedAFTER LANDING, APPROXIMATELY 30 SECONDS ENGINE NR 1 OIL FILTER BYPASS LIGHT ILLUMINATED. LIGHT EXTINGUISHED AFTER ENGINE NR 1 SHUTDOWN. ACFT GROUNDED. ACCOMPLISHED STEPS A-E, 2, C OF FIM TASK 79-05, TASK 817. REPLACED NR 1 ENGINE SCAVENGE OIL FILTER CLOGGINApr 18, 2016 · N448AS · Boeing 737990ER · Engine Oil Distribution (Airframe Furnished)
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