N431AS

Service difficulty reports · 360

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 = 'N431AS' 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 ASAA2019050329353Transition Panel · corrodedFWD CARGO COMPT. RT STA 500I-500G SIDEWALL TRANSITION PANEL HAS SPOTS OF CORROSION. GROUNDED - YES. FABRICATED TRANSITION PANEL IAW SRM 53-00-53, 51-40-05 AND INSTALLED IAW SRM 51-40-02 AND BAC DWG 143A7500.May 3, 2019 · N431AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2019050329352Transition Panel · corrodedFWD CARGO COMPT. LT STA 500H-500L SIDEWALL TRANSITION PANEL HAS SPOTS OF CORROSION. GROUNDED - YES. FABRICATED TRANSITION PANEL IAW SRM 53-00-53, 51-40-05, AND INSTALLED IAW SRM 51-40-02 AND BAC DWG 143A7500.May 3, 2019 · N431AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2019050329344Channel · corrodedAFT CARGO COMPARTMENT FLOOR CHANNEL AT STATION 787, AND APPROX RBL33 HAS CORROSION. **CIRCLED IN RED**. GROUNDED - YES. REMOVED DAMGED SECTION AND INSTALLED REPAIR SPLICE PER ER SRM 53-00-53 AFTER BEING FOUND OUT OF LIMITS PER ER SRM 53-00-53-1A-2.May 3, 2019 · N431AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2019042829342Power Supply · failedEMERGENCY LIGHT BATTERY AND CHARGER M1673 FAILED BATTERY CAPACITANCE CHECK. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY POWER SUPPLY M1673 S/N 303007 AND PERFORMED SUCCESSFUL SYSTEM OP CHECK IAW AMM 33-51-06-960-806.Apr 28, 2019 · N431AS · Boeing 737990ER · Emergency LightingSDR ASAA2019042649130Unknown · unknownAUTOTHROTTLE DID NOT ENGAGE THE #2 POWER LEVER AFTER TOGA WAS PUSHED FOR DEPARTURE. GROUNDED - YES. ACCOMPLISHED AUTOTHROTTLE BITE REF B737-900 FIM 22-31 TASK 801. TEST PASSED WITH NO FAULTS FOUND. ACCOMPLISHED AUTHTHROTTLE SYSTEM- OPERATIONAL TEST REF B737-90Apr 24, 2019 · N431AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2019042289072Fmc · malfunctionedON DEPARTURE OUT OF ATL ON A RNAV DEPARTURE & LNAV/VNAV ENGAGED ON TAKEOFF ROTATION LNAV & VNAV BOTH DISAPPEARED & WE LOST F/D GUIDANCE. WE TURNED BOTH F/D OFF, THEN ON & REENGAGED LNAV & VNAV WHICH WORKED. THEN CLIMBING OUT OF 15,000 FT VNAV DISENGAGED & FMA Apr 18, 2019 · N431AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019042289071Fmc · malfunctionedON CLIMBOUT, ABOUT 1000 ' MSL, VNAV DISCONNECTED AND WOULD NOT RE- ENGAGE. FMC CLIMB AND CRZ PAGE SPEEDS BLANKED OUT. AFTER 60-90 SECONDS, SPEEDS RE- POPULATED ON CLB & CRZ PAGES AND VNAV WAS ENGAGEABLE. VNAV WORKED NORMALLY FOR THE REST OF FLIGHT, INCLUDINGApr 18, 2019 · N431AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019041548978Regulator · failedWHILE PERFORMING T/C NG-36WC-00001 (#1 ENG BLEED AIR HEALTH CHECK) FOUND THAT THE HIGH STAGE VALVE REGULATOR FAILED OPS CHECK. GROUNDED - YES. REPLACED THE HIGH STAGE REGULATOR REF B737-900 AMM 36-11-07-400-801 OPS CHECK GOOD.Apr 14, 2019 · N431AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2019041548977Shutoff Valve · failedDURING CROSSOVER TEST OF THE #1 ENGINE DUCT PRESSURE AT 30% AT 40# N1, LOW BY 10%. GROUNDED - YES. REMOVED AND REPLACED PRSOV REF B737-900 AMM 36-11-04, LEAK AND OPS CHECK GOOD.Apr 14, 2019 · N431AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2019041538979Valve · failedDURING ENGINE RUN NOTICED DUCT SPLIT UP TO APPROXIMATELY 40% BEFORE PRESSURES EVENED UP. GROUNDED - YES. REMOVED AND REPLACED #1 ENG HIGH STAGE VALVE REF B737-900 AMM 36-11-06 REQUIRES BLEED AIR CROSSOVER TEST AND HIGH STAGE VALVE OPS CHECK. LEAK CHECK OF HIGHApr 13, 2019 · N431AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2019032828807Unknown · malfunctionedAUTOLAND TOUCHDOWN ABOUT 40' LEFT OF CENTERLINE. STARTED DEVIATION FROM CENTERLINE AT ABOUT 50' AGL. GROUNDED - YES. ACCOMPLISHED LLM MX PRACTICES FOR INBOUND CONDITION RELATED TO AUTOLAND AMM 22-00-01-730-807 NO CURRENT FAULTS AND ALL TESTS PASS. ACCOMPLISHEDMar 28, 2019 · N431AS · Boeing 737990ER · Autopilot SystemSDR ASAA2019032628789Warning System · false activationFAULT LIGHT ON CONT CAB ZONE TEMP ON RECALL, RESETS WHEN MASTER CAUTION RESET PRESSED. GROUNDED - YES. ACCOMPLISHED INITIAL EVALUATION FOR FIM 21-62 TASK 842- CONTROL CABIN ZONE TEMP LIGHT ON AND STAYS OFF AFTER RESET. SYSTEM OPERATED NORMAL- NO ZONE TEMP LIGHMar 26, 2019 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2019031528638Sensor · failedLEFT FWD WINDOW HEAT OVERHEAT LIGHT CAME ON DURING DESCENT AROUND FL190. RAN QRH. LIGHT CAME BACK ON. GROUNDED - YES. PERFORMED L1 WINDOW HEAT BITE CHECK PER FIM 30-41 TASK 801. CONTROLLER SHOWS WINDOW SENSOR FAULT. SWITCHED TO OTHER SENSOR AND PERFORMED BITMar 15, 2019 · N431AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2019031428636Warning System · false activationLEFT FWD WINDOW HEAT OVERHEAT CAUTION LIGHT ILLUMINATED ON FINAL APPROACH. PERFORMED QRH AND LIGHT REMAINED ILLUMINATED. GROUNDED - YES. PERF WINDOW WHCU BITE PER FIM 30-41 TASK 801 WINDOW HEAT RESET. OPS CK GOOD.Mar 14, 2019 · N431AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2019030628497Control Module · intermittentFLT ALTITUDE SELECTOR KNOB ON PRESSURIZATION SYSTEM CONTROL HAS TROUBLE SELECTING DESIRED ALTITUDE. SOMETIMES THE DIGITAL ALTITUDE SELECTED INDICATOR WILL NOT MOVE WITH THE KNOB MOVEMENT. GROUNDED - YES. DUPLICATED PROBLEM - INTERMITTENT. REPLACED CABIN PRESSUMar 6, 2019 · N431AS · Boeing 737990ER · Cabin Pressure ControllerSDR ASAA201902228276Knob · inoperativePRESSURIZATION SYSTEM -FLT ALT KNOB INOP. GROUNDED - YES. CYCLED PRESSURIZATION PANEL C/B PRESSURIZATION PANEL -OPS CHECK GOOD IAW B737-900 AMM 21-31-00.Feb 21, 2019 · N431AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA201902228274Warning Light · false activationCONT CABIN "ZONE TEMP" LIGHT ILLUMINATED WITH MASTER CAUTION RECALL - GOES OUT WITH RESET. GROUNDED - YES. ACCOMPLISHED PZTC BITE REF B737-900 FIM 21-62 TASK 801 NO FAULTS #1, #2 PZTC ON BIT AND PREV FLT LOGGED FLT DECK TRIM VALVE WITH A GREEN ON GO, RAN PACKSFeb 21, 2019 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2019021628188Selector · malfunctionedFLT ALT WINDOW ON PRESSURIZATION CONTROLLER ONLY SCROLLS BETWEEN 34000 AND 34500. GROUNDED - YES. TAPPED ON PRESSURIZATION CONTROLLER SELECTOR, ALT WINDOW SELECTS NORMAL. OPS NORMAL REF AMM 21-31-00.Feb 16, 2019 · N431AS · Boeing 737990ER · Cabin Pressure ControllerSDR ASAA2019012127896Warning System · false activationVTK ILLUMINATED ON FO'S NAV DISPLAY. GROUNDED - YES. REF FIM 34-61 TASK 801 PERFORMED FMC BITE TEST NO CURRENT FAULTS NO HISTORY 30 DAYS.Jan 21, 2019 · N431AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018111976884Control Valve · inoperativeAFTER PUSHBACK AND STARTING ENGINES UPON PRESSING SYSTEM ANNUNCIATOR PANEL FOR RECALL, THE AFT ZONE TEMP LIGHT ILLUMINATED, UPON RESET LIGHT EXTINGUISHED. WE WERE UNABLE TO CONTROL THE AFT CABIN TEMP CONTROL, WITH AFT SELECTOR IN THE AFT DUCT SUPPLY POSITION. Nov 17, 2018 · N431AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018111966883Control Valve · faultedON RECALL AFT CAB ZONE TEMP LIGHT ILLUMINATES. GROUNDED - YES. PERFORMED BITE OF #1 PACK TEMP CONTROLLER FOUND AFT ZONE TRIM VALVE FAULTING REF B737-900 FIM 21-62 TASK 801. REMOVED AND REPLACED AFT ZONE TEMP CONTROL VALVE REF B737-900 AMM 21-61-21 OPS CHECK ANNov 16, 2018 · N431AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018111326801Valve · faultedAFT ZONE TEMP FAULT LIGHT ON. GROUNDED - YES. FOUND AFT ZONE VALVE FAULT ON LH CONTROLLER PERFORMED BITE PER B737-900 FIM 21-61 TASK 801 NO HISTORY 90 DAYS NO FAULTS NOTED.Nov 11, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018102926641Spacer · debondedWHILE ACCOMPLISHING TC 78472002 NO 2 ENGINE SN 658290 FOUND NR 8 SPACER DISBONDED. GROUNDED - YES. REPLACED NR 8 SPACER ON NR 2 ENGINE SN 658290. REF TC 78472002 FOR WORK PERFORMED AND VIB SURVEY.Oct 26, 2018 · N431AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2018101926529Control Valve · faultyUPON PUSH BACK LH PACK LIGHT ILLUMINATED W/ MASTER CAUTION RECALL. GROUNDED - YES. LT ZONE TEMP CONTROL SHOWS "THIS SIDE TCV" FAIL. VERIFIED VALVE MOVING VERY SLOW, REPLACED TCV REF AMM TASK 21-51-10-000-801 AND 21-51-10-400-801. RAN APU BLEED AND LT PACK NO LOct 17, 2018 · N431AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018081305736Module · failedSTARTING THE NR 1 ENGINE, ISOLATION VALVE CLOSED POSITION NOTICED A SLOW RISE IN ACCELERATION. SMELLED BLEED THROUGH AFTER START WITH DUCT PRESSURE EQUAL. RECONFIGURED AND ISOLATION VALVE, WORKED NORMALLY. ACFT GROUNDED. FOUND THE ISOLATION SWITCH ON THE Aug 10, 2018 · N431AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018073025566Start Valve · failedNO N2 ROTATION ON NR 2 ENGNIE. GROUNDED - YES. REMOVED AND INSTALLED A NEW START VALVE ON NR 2 ENG REF AMM 80-11-03-000-801 AND AMM 80-11-03-400-801. OPS AND LEAK CK OK.Jul 27, 2018 · N431AS · Boeing 737990ER · Engine Start Valves/ControlsSDR ASAA2018071625466Control Panel · failedWITH APU RUNNING PLACED BLEEDS AND PACKS ON AND FWD CAB ZONE TEMP LIGHT ILLUMINATED. INTERMITTENTLY, MASTER CAUTION EXTINGUISHED LIGHTS. ZONE TEMP ILLUMINATES ON RECALL. GROUNDED - YES. REPLACED P5-10 PANEL REF AMM 21-51-65 OP CHECK NORMAL. FWD CABIN ZONE TEMPJul 16, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018071625464Wire · damagedAFTER ENGINE START AND BOTH PACKS WERE TURNED ON, FWD CAB ZONE TEMP LIGHT ILLUMINATED ON RECALL. SOON AFTER, BOTH MASTER CAUTION LIGHTS ILLUMINATED ALONG WITH "AIR COND" ON RECALL. CANNOT RESET MASTER CAUTION OR ZONE TEMP LIGHTS. GROUNDED - YES. PERFORMED WIRIJul 16, 2018 · N431AS · Boeing 737990ER · Air Conditioning System WiringSDR ASAA2018071525467Modulating Valve · failedAFTER ENGINE START AND PACKS WERE PLACED ON, "ZONE TEMP" LIGHT ILLUMINATED ON FORWARD CAB. BOTH MASTER CAUTION LIGHTS ILLUMINATED ALONG WITH AIR CONDITIONING LIGHT. LIGHTS WOULD NOT RESET WHEN MASTER CAUTION PRESSED. FWD CAB TEMP CONTROLLER KNOB HAD NO EFFECT Jul 15, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018071425469Controller · failedZONE TEMP LIGHT ILLUMINATED ON FWD CABIN TEMP CONTROL. EXTINGUISHED ON MASTER RESET. CANNOT CONTROL SUPPLY DUCT TEMP WITH TEMP SELECTOR KNOB. GROUNDED - YES. NR 2 P/Z CONTROLLER LOGGED FWD ZONE CABIN SENSOR FAULT. REF AMM 21-61-10 CLEANED SENSOR, NO HELP. UNABJul 14, 2018 · N431AS · Boeing 737990ER · Cabin Temperature ControllerSDR ASAA2018070925336Display · malfunctionedAFTER LANDING BOTH CDU'S WENT MOMENTARILY BLANK (APPROX 2 SEC) THEN RETURNED TO NORMAL. GROUNDED - YES. NO HISTORY OF SAME 60 DAYS. LT & RT FMC FFR SHOWS A LOGGED GND FAULT OF LT FMC. CURRENT OPS CHECK OF BOTH FMC'S GOOD. REF AMM 34-61-00.Jul 9, 2018 · N431AS · Boeing 737990ER · Central DisplaySDR ASAA2018070325277Fmc · malfunctionedRIGHT FMC BLANKED AND REBOOTED AFTER LANDING. GROUNDED - YES. VERIFIED R-FMC IN FLIGHT FAULT. REF FIM 34-61 TASK 804 REBOOTED FMC R & L OPENED & CLOSED 4 C/B'S NORM OPS RESTORED.Jul 3, 2018 · N431AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018061845078Transceiver · failedWEATHER RADAR DEPICTED SIGNIFICANT WEATHER COVERING THE ENTIRE NAV DISPLAY FOR THE FIRST OFFICER DURING THE WHOLE FLIGHT, REGARDLESS OF SETTINGS USED. WEATHER TEST APPEARED NORMAL AND WEATHER DISPLAYED ON CAPTAIN`S SIDE APPEARED NORMAL. ACFT GROUNDED. REMJun 14, 2018 · N431AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2018052224765Controller · faultyFWD CAB ZONE TEMP ILLUMINATED ON RECALL, LIGHT EXTINGUISHED ON MASTER CAUTION SYSTEM RESET. GROUNDED - YES. NR 2 PACK ZONE TEMP CONT SHOWS "FWD CABIN ZONE" SENSOR FAULT DURING BITE TEST. SAME AS "HISTORY" FAULT CLEARS ON VERIFY. NR 1 D2TC - NO FAULTS. ON BITE May 22, 2018 · N431AS · Boeing 737990ER · Cabin Temperature ControllerSDR ASAA2018052224744Warning System · false activationWHEN RECALL FOR MASTER CAUTION SYSTEM IS PRESSED, AIR COND IS ILLUMINATED WITH A ZONE TEMP LIGHT FOR THE FWD CAB. LIGHTS EXTINGUISH WHEN MASTER CAUTION SYSTEM IS RESET. GROUNDED - YES. FWD CAB ZONE TEMP OPS CHECK GOOD IAW FIM 21-62 TASK 843.May 22, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA201805224724Shutoff Valve · faultedDURING DESCENT, PRESSING MASTER CAUTION RECALL, FWD CABIN ZONE TEMP ILLUMINATED. PRESSING MASTER CAUTION RESET, THE LIGHT EXTINGUISHED. ACFT GROUNDED. THIS TIME THE OPS PROCEDURE TO DISPATCH. #2 PZTC BITE SHOWS CABIN SENSOR - ZONE FAULT AND NR 1 PZTC SHOWS May 20, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018052194694Accessory Unit · malfunctionedFWD ZONE CABIN TEMP LIGHT ILLUMINATED, TEMP NORMAL. ACFT GROUNDED. PERFORMED TROUBLESHOOTING IAW FIM 21-62 TASK 840, AND 21-62 TASK 839. AGAIN ZONE TEMP CONTROLLER 2 FAILED ZONE CABIN SENSOR DURING BITE CHECK. THIS SENSOR HAS BEEN REPLACED. FAULT CLEARED OMay 19, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA201805214674Sensor · dirtyDURING THE DESCENT CHECKLIST, WHEN RECALL WAS PUSHED, RECEIVED A FWD CABIN ZONE TEMP LIGHT, EXTINGUISHED ON RESET. ACFT GROUNDED. PERFORMED A BITE CHECK OF THE ZONE TEMP CONTROLLER NR 2, M1143. BITE AND PREVIOUS FLT FAULTED ZONE CABIN SENSOR FAULT, TROUBLMay 16, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018051624662Filter · cloggedFWD CABIN ZONE TEMP LIGHT ILLUMINATED WITH RECALL, EXTINGUISHED WHEN MASTER CAUTION RESET. ACFT GROUNDED. RESET WITH MASTER CAUTION. ACCOMPLISHED CABIN TEMP CONTROLLER BITE IAW FIM 21-62 TASK 801. FOUND THE FWD SENSOR FAULT LOGGED. FOUND ALL CABIN AND FLIMay 16, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA201805164640Unknown · unknownPASSENGER CABIN EXCESSIVELY HOT WITH CABIN CONTROL KNOBS TURNED TO FULL COLD. ACFT GROUNDED. PERFORMED CABIN TEMPERATURE CONTROL AND INDICATION OPERATIONAL TEST WITH LT, RT, AND BOTH PACKS WITH NO DEFECTES NOTED IAW AMM 21-61-00-700-807-002. ETOPS GROUND VMay 14, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA201805164639Warning Light · false activationPASSENGER CABIN TEMP EXCESSIVELY HOT. AIR TEMP CONTROL PANEL HAD FOLLOWING INDICATIONS DURING CRUISE FLIGHT. SUPPLY CONT CAB 5 FWD 4 AFT 4PASS CAB FWD 30, AFT 32 PACK : R 30 L 25. ACFT GROUNDED. COMPLIED WITH A LT PACK ZONE TEMP CONTROLLER BITE TEST IAW AMM May 14, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018051324618Warning System · false activationFWD CABIN ZONE TEMP ILLUMINATES WITH MASTER CAUTION RECALL. EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. REVERSED CONFIGURATION CHANGES OF MEL 21-1G OF THE RT PACK REF AMM 21-00-00-040-804. PERFORMED PZTC BITE ON BOTH CONTROLLERS, MULTIPLE TIMES WITMay 13, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018050124415Warning Light · false activationON RECALL, CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED. CLEARED WITH MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED A PACK TEMP CONTROL BITE IAW FIM 21-62 TASK 801, NO DISCREPANCIES NOTED WITH ALL FAULTS CLEARED.Apr 28, 2018 · N431AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2018040924193Satcom · malfunctionedSATCOM MENU OPTION MISSING. SATCOM LOCKED ON GROUND. ACFT GROUNDED. RAN QRH. SATCOM CORRECTED AND AVAILABLE.Apr 9, 2018 · N431AS · Boeing 737990ER · Communications SystemSDR ASAA2018040324134Anti-Ice Valve · failedNR 1 ENGINE ANTI-ICE FAILED TO OPEN WHEN COMMANDED. CYCLED SWITCH AND VALVE OPENED ON SECOND ATTEMPT. ACFT GROUNDED. IAW WDM 30-21-11-1, 28 VDC PRESENT AT DP103 PIN 1 WITH NR 1 ENGINE ANTI-ICE ON. REPLACED THE NR 1 ENGINE COWL TAI VALVE IAW AMM 30-21-11. LEAApr 3, 2018 · N431AS · Boeing 737990ER · Engine Anti-Icing SystemSDR ASAA2018040124084Anti-Ice Valve · malfunctionedDURING DESCENT, THE NR 1 ENGINE ANTI-ICE VALVE DID NOT OPEN. COWL ANTI-ICE VALVES WERE SECURED. A SECOND ATTEMPT WITH ENGINE ANTI-ICE, OPS CHECKED NORMAL. ACFT GROUNDED. RAN THE NR 1 ENGINE, CYCLED THE NR 1 ENGINE ANTI-ICE SWITCH A NUMBER OF TIMES. OPS CHEApr 1, 2018 · N431AS · Boeing 737990ER · Air Intake Anti/De-Ice SystemSDR ASAA2018030823783Oil Cooler · leakingAPU MX BLUE LIGHT ON AND OIL LEVEL FOUND LOW. ACFT GROUNDED. COMPLETED ALL STEPS OF TSR IAW FIM 49-95-801, AND FIM 49-90 / 813, PARA (B) (F). FOUND EVIDENCE OF AN OIL COOLER LEAK. REMOVED AND REPLACED THE OIL COOLER IAW AMM 49-91-41. LEAK CHECKED GOOD.Mar 8, 2018 · N431AS · Boeing 737990ER · APU Oil SystemSDR ASAA2018020823480Sensor · failedRIGHT SIDE WINDOW OVERHEAT ILLUMINATED ON DESCENT. ACFT GROUNDED. CONTROL MODULE HAD WINDOW SENSOR FAILURE WHEN CHECKING FAULT HISTORY FOR THE RIGHT WINDOW. SWAPPED SENSOR TERMINAL TO SPARE SENSOR. OPS CHECK GOOD IAW AMM 30-41-00-710-801.Feb 8, 2018 · N431AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2018012723313Keyboard · damagedFIRST OFFICER`S FMC 5R BUTTON IS INTERMITTENT AND HARD TO SELECT. ACFT GROUNDED. R & R THE FMC CDU KEYBOARD IAW AMM 34-61-01-400-801. ACCOMPLISHED CDU KEYBOARD TEST STEP D IAW AMM 34-61-01. SYS CHECKED NORMAL.Jan 27, 2018 · N431AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017122823040Warning Light · false activationCLIMBING THROUGH 14,000 FT, A MASTER CAUTION FOR THE LT PACK ILLUMINATED. TRIP RESET EXTINGUISHED THE LIGHT. ACFT GROUNDED. PERFORMED A NR 1 PACK ZONE TEMPERATURE CONTROLLER BITE TEST IAW AMM 21-61-00-700-806-002. NO FAULTS NOTED. NO HISTORY WITHIN 120 DAYS.Dec 28, 2017 · N431AS · Boeing 737990ER · Cabin Cooling System
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