N471AS

Service difficulty reports · 245

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 = 'N471AS' 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 ASAA2023062943830Unknown · unknown#2 HF RADIO FAIL-FAIL. GROUNDED - YES. CYCLED PWR TO HF #2 FAIL MESSAGE CLEARED. HF #2 OPS CHECK GOOD. REF B737-900 AMM 2311-00.Jun 29, 2023 · N471AS · Boeing 737990ER · HF Communications SystemSDR ASAA2023062543672Unknown · unknownNEITHER AUTOPILOT WILL NOT ENGAGE(DISCOVERED AUTOPILOT STAB TRIM SWITCH OFF! - OPERATED NORMALLY AFTER SWITCHED ON). GROUNDED - YES. BOTH AUTOPILOT WORK NORMAL, NO FAULT FOUND DURING BITE TESTBOTH CHANNEL A AND CHANNEL B LRU TEST PASSED. REF B737-900 FIM 22-11Jun 25, 2023 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2023061843615Lamp · inoperativeL1 AND R1 EMERGENCY SLIDE LIGHTS INOP. GROUNDED - YES. RELAMPED L1 AND R1 EMERGENCY SLIDE LIGHTS REF. AMM 33-51-04-960-801.Jun 18, 2023 · N471AS · Boeing 737990ER · Emergency LightingSDR ASAA2023061533574Unknown · unknownUNABLE TO TRANSMIT VOICE OVER SATCOM. SIDETONE WAS HEARD BY BOTH PILOTS. RECEIVE AND DATA OK. GROUNDED - YES. COULD NOT DUPLICATE ISSUE. PERFORMED GOOD RADIO CHECK CALLS W/ DISPATCH UTILIZING SAT 1&2. OPS NML REF B737-900 AMM 23-15-00. ETOPS GND VERIFICATION TJun 13, 2023 · N471AS · Boeing 737990ER · Communications SystemSDR ASAA2023042843045Unknown · unknownHF #2 FAIL LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED HF COMMUNICATION SYSTEM BITE PROCEDURE ON HF #2. TEST PASSED. OPS CHECKED GOOD. REF B737-900 FIM 23-11 TASK 801.Apr 28, 2023 · N471AS · Boeing 737990ER · HF Communications SystemSDR ASAA2023041142811Spinner · damagedPER ASA T/C 78472010 #1 ENG. FAN BLADE LUBE FRONT SPINNER CONE WHITE ANTI EROSION PAINT MISSING BEYOND LIMIT. GROUNDED - YES. REMOVED AND REPLACED #1 ENG FRONT SPINNER CONE REF AMM 72-21-01.Apr 11, 2023 · N471AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2023040442758Acm · faultedLEFT PACK LIGHT ILLUMINTES. RESET. COMES BACK ON. GROUNDED - YES. REMOVED AND REPLACED LH PACK ACM REF B737-900 AMM 21-51-04.Apr 4, 2023 · N471AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2023031942413Display · wornON LEFT CDU, COATING OF L2 AND L6 BUTTONS HAS WORN OFF. GROUNDED - YES. REMOVED AND REPLACED LEFT CDU PER B737-900 AMM 34-61-01/401. OPS CHECK GOOD.Mar 19, 2023 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2023022142093Exchanger · leakingDURING WALKAROUND, FOUND #2 ENG FUEL LEAK. ACCOMPLISHED ENGINE VENTS & DRAINS INSPECTION REF B737-900 AMM 71-11-00 FOUND FUEL LEAK AT MAIN OIL/FUEL HEAT EXCHANGER PAD DRAIN APPROX 60 DPM. GROUNDED - YES. REMOVED AND REPLACED MAIN OIL/FUEL HEAT EXCHANGER AND SFeb 21, 2023 · N471AS · Boeing 737990ER · Engine Oil Distribution (Airframe Furnished)SDR ASAA2023021741967Pump · unknownFOLLOW UP TO MOMENTARY ILLUMINATION OF ELEVATOR FEEL DIFF PRESSURE LIGHT DURING HIGH A SYSTEM HYDRAULIC DEMAND. GROUNDED - YES. FOUND ELECTRIC RECEPTOR ON #1 EDP HAS STRIPPED THREADS,AND LOOSE. EDP REMOVED AND REPLACED OPS AND LEAK CHECK GOOD REF B737-900 AMM Feb 17, 2023 · N471AS · Boeing 737990ER · Hydraulic System, MainSDR ASAA2023021041901Power Supply · inoperativeROW 25FED, 27ABC, 29FED AND AFT LEFT EXTERIOR EMERGENCY LIGHTS INOP. GROUNDED - YES. RELAMPED L2 DOOR EXTERIOR EMERGENCY LIGHT TWICE. REF B737-900 AMM 33-51-02 NO HELP, REMOVED AND REPLACED AFT LEFT AND AFT RIGHT EMERGENCY LIGHT BATTERIES, NO HELP REF AMM 33-5Feb 10, 2023 · N471AS · Boeing 737990ER · Emergency LightingSDR ASAA2023020641866Valve · inoperativeENGINE #2 STARTER INOP. ENGINE #2 STARTER WILL NOT OPEN. GROUNDED - YES. PERFORMED TROUBLESHOOTING REF B737-900 FIM TASK 80-07 TASK 804. FOUND #2 ENG START VALVE FAULTY. REMOVED AND REPLACED START VALVE REF B737-900 AMM 80-11-03.Feb 6, 2023 · N471AS · Boeing 737990ER · Engine CrankingSDR ASAA2023012441639Fire Loop · inoperative#2 ENG B LOOP FIRE DETECTION INOPERRATIVE. GROUNDED - YES. VERIFIED DISCREP. HARD FAIL. B737-900 FIM TASK 26-10 TASK 801. SHOWS A "WIRING OPEN/DETECTOR" FAULT. REF. FIM 26-10 TASK 805, RMVD M279 MODULE REF. MM 26-10-01, RMVD B LOOP WIRING FROM B DETECTORS. REJan 24, 2023 · N471AS · Boeing 737990ER · Fire DetectionSDR ASAA2023010341387Window · overtempRIGHT SIDE WINDOW OVERHEAT GROUNDED - YES. ASA QRH RESET OKAY. RIGHT SIDE WINDOW HEAT NORMAL AT THIS TIME.Jan 3, 2023 · N471AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2022121941197Harness · damagedON ENG #1 WHILE ACCOMPLISHING ASA TASK CARD # N8420000 CONNECTOR DP1102 FOUND NOT CONNECTED TO M1180 (BLEED AIR REGULATOR). AND CONECTOR DP1102 IS DAMAGED. GROUNDED - YES. INSPECTED BLEED AIR REGULATOR (M1180) NO DISCREPANCIES NOTED. REPLACED MW0311 HARNESS. ADec 19, 2022 · N471AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2022120741040Autoland Sys · faultyATTEMPTED AUTOLAND TO 16R SEA AIRCRAFT WAS 6O' LEFT OF CENTERLINE AND DRIFTING FARTHER OFF WITH A MINIMAL CROSSWIND. AUTOPILOT HAD TO BE DISCONNECTED TO CORRECT ONTO CENTERLINE. GROUNDED - YES. REF B737-900 FIM 22-11 TASK 825 PERFORMED LAND VERIFY TEST. ALL TEDec 7, 2022 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2022111140757Actuator · leaking#2 ENGINE L & R VSV LEAKING FUEL. GROUNDED - YES. REMOVED AND REPLACED #2 ENG LH & RH VSV ACTUATOR REF B737-900 AMM 75-31-01. LEAK & OPS CHECKED GOOD.Nov 11, 2022 · N471AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2022111140758Fuel Heater · leakingPERFORMED IDLE RUN LEAK CHECK ON #2 ENGINE PER B737-900 AMM 71-00-00, SHUT DOWN ENGINE AND OPENED FAN COWLS PER AMM 71-11-02. PERFORMED ENGINE VENTS AND DRAINS INSPECTION PER AMM 71-71-00, FOUND FUEL HEATER-SERVO LEAKING ON TOP CAP. V. BALABAT # 44360. GROUNDNov 11, 2022 · N471AS · Boeing 737990ER · Fuel HeaterSDR ASAA2022100640181Fmc · failedFMC 2 BLANKED AND RESTARTED DURING THE ARRIVAL. NO FURTHER ISSUES. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 34-61 TASK 807. OPS TEST NORMAL.Oct 6, 2022 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022080939435Sensor · dirtyWHILE PERFORMING ASA T.C.# 78249000, APU CDU HAS MTX MSG 49-61259 SPEED SENSOR 1 SHOWS OPEN CIRCUIT ON EVERY LEG FOR 15+ LEGS IN MTX HISTORY. GROUNDED - YES. REMOVED APU SPEED SENSOR IAW B737-900 AMM 49-61-21 CLEANED AS REQUIRED. REINSTALLED APU SPEED SENSOR IAug 9, 2022 · N471AS · Boeing 737990ER · APU ControlsSDR ASAA2022072339165Lru · deflectionAT 10K FEET B AUTO PILOT WAS ENGAGED. AFTER A FEW SECONDS A FULL LEFT DEFFLECTION OF THE YOKE OCCURED WITH THE B AUTO PILOT DISENGAGING AND THE A/P P/RST RED LIGHTS FLASHING AND AURAL WARNING TONE SOUNDING. GROUNDED - YES. VERIFIED LAST LEG CHAN "B" VNAV SPD LJul 23, 2022 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2022071539094Fmc · failedCA FMC FAIL FOR 1 MIN THEN CAME BACK. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 34-61 TASK 801 BITE OF BOTH FMC'S, ALL SENSORS GOOD, NO INFLIGHT FAULTS ON LEFT FMC, RIGHT LEG 1 FAULTED PRESS POS RATE. ACCOMPLISHED FIM 34-61, TASK 824, NO FAULTS NOTED.Jul 15, 2022 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022070738968Hf Comm · fault messageHF 2 INDICATES "FAIL". GROUNDED - YES. RESET #2 HF PER B737-900 AMM 23-11-00. NO DEFECTS NOTED AT THIS TIME.Jul 7, 2022 · N471AS · Boeing 737990ER · HF Communications SystemSDR ASAA2022062938881Fmc · intermittentAT CRUISE LEFT FMC FAIL FOR : 02 MINUTES SELF CORRECTED OPS NORMAL. GROUNDED - YES. PERFORMED B737-900 FIM TASK 34-61 TASK 801. FMC 1 OPS CHECK GOOD. NO FAULTS.Jun 29, 2022 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022061338648Fmc · intermittentFMC LOCKED ON BITE PG FOR SEVERAL MINUTES. STARTED WORKING NORMALLY. GROUNDED - YES. PERFORMED FMC SYSTEM OPS TEST IAW B737-900 AMM 34-61-00-710-801 NO FAULTS AND MAINT HISTORY.Jun 13, 2022 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022060838610Totalizer · false indicationDURING CLIMB AND CRUISE. FUEL TOTALIZER ON THE FMC PROGRESS PAGE BECAME ERATIC WITH FUEL TOTALS DROPPING UP TO 600 POUNDS AND THEN CLIMBING UP 500-600 POUNDS ON THE LANDING TOTAL. GROUNDED - YES. ACCOMPLISHEDB737-900 FIM 28-41 TASK 814 SUMP FUEL TANKS, NO WATEJun 8, 2022 · N471AS · Boeing 737990ER · Fuel Indicating SystemSDR ASAA2022053038510Clamp · looseWATER DRIPPING FROM RIGHT PACK BAY. GROUNDED - YES. FOUND CLAMP LOOSE ON RIGHT PACK WATER EXTRACTOR. TIGHTENED CLAMP. OPERATED PACK WITH NO LEAKS NOTED. B737-900 AMM REF 21-51-14. ETOPS GROUND VERIFICATION SUCCESSFUL.May 30, 2022 · N471AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022052238401Fcu · warning messageMOMENTARY MASTER CAUTION ON TAKEOFF WITH THE FLT CONT LIGHT. EXTINGUISHED BEFORE WE COULD SEE WHAT FAULT LIGHT HAD ILLUMINATED ON THE OVHD PANEL. ON SHUTDOWN THE SPEED TRIM FAIL LIGHT ILLUMINATED. NO LIGHTS ON RECALL DURING FLIGHT AND THE TRIM SEEMED TO WORK NMay 22, 2022 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2022042738132Unknown · unknownSATCOM 1 AND 2 XMIT INOP WON'T TRANSMIT VOICE. SATCOM CALL CAN BE MADE, CONNECTS, BUT VOICE TRANSMISSIONS WON'T GO THROUGH TRIED SAT 1 AND SAT 2 TO DISPATCH AND MEDLINK FOR BOTH CAP AND FO ACP PANELS ALL WITH SAME RESULTS. GROUNDED - YES. PERFORMED SATCOM COMMApr 27, 2022 · N471AS · Boeing 737 · HF Communications SystemSDR ASAA2022042638136Fmc · failed3 HOURS IN CRUISE FLIGHT AIRCRAFT EXPERIENCED LEFT FMC FAILURE IT RESETS ON IT'S OWN BEFORE RUNNING QRH CHECKLIST. GROUNDED - YES. INFO NOTED.Apr 26, 2022 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022041237978Unknown · unknownIN FLIGHT BOTH FMC'S WENT BLANK. THEY WERE OFF APROX 30 SEC AND RETURNED ON TO THE MENU PAGE WITH FMC MISSING ON BOTH SIDES. APROX 30 SECONDS AFTER THAT THE FMC PROMPT RETURNED ON BOTH SIDES. AUTOPILOT, AUTOTHROTTLES NEVER DIS-ENGAGED. GROUNDED - YES. FFR SHOWApr 12, 2022 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022031037664Spacer · debondedPER T/C 78472010 #2 ENGINE FAN BLADE LUBE SPACERS #1/2/6/9/12/13 AND 19-23 ARE DISBONDED. GROUNDED - YES. REMOVED AND REPLACED #1,2,6,9,12,13,19 AND 19-23 SPACERS PER TASKCARD 78472010.Mar 10, 2022 · N471AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2022031037663Blade · damagedPER T/C 78472010 #2 ENGINE FAN BLADE LUBE #14 FAN BLADE CU-NI-IN COATING MISSING BEYOND LIMITS ON CV SIDE. GROUNDED - YES. REMOVED AND REPLACED #14 AND #2 FAN BLADES ON #2 ENG PER TASKCARD 78472010.Mar 10, 2022 · N471AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2022021437445Panel · inoperativeBOTH HF LIGHTS ON HF/SAT SELECT XFER ARE NOT ILLUMINATED IN AIR OR ON GROUND. LIGHTS TEST SHOWS LIGHTS ARE NOT BURNED OUT. GROUNDED - YES. REMOVED AND REPLACED HF/SAT PANEL IAW B737-900 AMM 23-15-00-400-804, OPS CHECK GOOD. ETOPS GROUND FUNCTIONAL CHECK FOR HFFeb 14, 2022 · N471AS · Boeing 737990ER · Audio Integrating SystemSDR ASAA2022011337158Pressure Switch · inoperative#2 AFT MAIN TANK FUEL LOW PRESSURE LIGHT ILLUMINATED IN DESCENT. #2 AFT PUMP SWITCHED OFF FOLLOWING QRH. GROUNDED - YES. REMOVED & REPLACED RIGHT AFT FUEL PRESSURE SWITCH PER B737-900 AMM 28-42-11 PULLED RESET ASSOCIATED (2)CB . OPS CHECK NORMAL.Jan 13, 2022 · N471AS · Boeing 737990ER · Fuel Indicating SystemSDR ASAA2021121536903Unknown · unknownAPPROACH WARN JUST BEFORE FLARE 30' DURING HGS AIII AUTOLAND. DISCONNECTED AUTOPILOT AND LANDED MANUALLY. AIRCRAFT WAS DRIFITING LEFT OF CENTERLINE DURING THE LAST 50' VERY LIGHT 5KTS CROSSWIND FROM THE LEFT. GROUNDED - YES. USING OBSERVED FAULT LIST. ACCOMPLIDec 15, 2021 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2021112036673Modulating Valve · failedLEFT PACK LIGHT ILLUMINATED ON DESCENT LIGHT EXTINGUISHED W MASTER CAUTION RESET. GROUNDED - YES. PERFORMED BITE CHECK ON #1 ZONE TEMP CONT, CONFIRMED HARD FAULT ON TCV. REPLACED LH PACK TCV PER B737-900 AMM 21-51-10, GREEN "GO" LIGHT ILLUMINATED.Nov 20, 2021 · N471AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2021101236318Fire Detector · inoperativeDURING CARGO FIRE TEST DETECTOR FAULT LIGHT ILLUMINATED AND FWD CARGO, FIRE LIGHT DOES NOT LIGHT UP. GROUNDED - YES. REPLACED THE FWD CARGO SMOKE DETECTOR B1, OPS NORMAL. REF B737-900 AMM TASK 26-16-01-400-801.Oct 12, 2021 · N471AS · Boeing 737990ER · Fire DetectionSDR ASAA2021101136257Actuator · inoperative"B" AUTOPILOT WILL NOT ENGAGE A CRUISE. GROUNDED - YES. DFCS FAULT REVIEW SHOWED FAULT 22-11149 "AIL PRESS SW-2" AND DFCS LIBRARY TEST #31 SHOWED CONSISTENT FAIL WITH FAULT 22-11144 "AIL DETENT SOLENOID-2". REMOVED AND REPLACED AUTOPILOT B AILERON ACTUATOR PEROct 11, 2021 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2021101136256Unknown · unknownLOST VNAV ON ARRIVAL ARRIVED TRACK AND FIXES DISAPPEARED AT 8000 MSL. GROUNDED - YES. DFCS FAULT REVIEW SHOWED PITCH MODE REVERSION FROM VNAV PATH DUE TO FMC DATA INVALID WITH FAULT CODE 22-11822. ACCOMPLISHED T/S FOR FAULT 22-11822 PER B737-900 FIM 22-11 TASKOct 11, 2021 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2021070135238Pitot Tube · blockedRIGHT AFTER ROTATION SOMETHING IMPACTED THE FRONT OF THE A/C. CAPT'S SIDE AIRSPEED WENT UNRELIABLE/ ENG CAUTION LIGHT ILLUMINATED. GROUNDED - YES. DIVERSION TIME 36 MINUTES - CW BITE CK OF #1 AND #2 ENGINE, AUTO THROTTLE AND FMC 1&2 NO CURRENT FAULTS. CAPTAIN Jul 1, 2021 · N471AS · Boeing 737990ER · Pitot/Static SystemSDR ASAA2021040334495Keyboard · defectiveFO FMC "2" BUTTON TEARING OFF. GROUNDED - YES. VERIFIED - REF B737-900 AMM 34-61-01, REMOVED/REPLACED F/O FMCS CDU KEYBOARD. OPS NML REF SAME.Apr 3, 2021 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2021020534047Modulating Valve · inoperativePRESS MSTR RECALL GET ZONE TEMP ON CONT CAB AFTER START USED QRD AND CONTACTED MTC. GROUNDED - YES. PERFORMED BITE PROCEDURE FOR PACK/ZONE TEMP CONTROLLER PER B737-900 FIM 21-62 TASK 801. BIT AND PREV FLT ANNUNCIATORS SHOWED FLIGHT DECK TCV INOP. PER TECH SERVFeb 5, 2021 · N471AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2021020133988Fmc · failedHAD SHORT PERIOD (APPROX 1 MIN) FMC FAIL (VTK) ON CAPTAIN SIDE. IT CORRECTED ITSELF BEFORE ANY CHECKLIST WAS RUN. GROUNDED - YES. PERFORMED LEFT FMC RESET PER B737-900 FIM 34-61-00-810-836. BITE SHOWS "PRES LAT" FAULT. NO OTHER FAULTS LOGGED. SYS OPS NML.Feb 1, 2021 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2021013033981Fuel Sys · out of balanceMAIN TANKS FUEL QUANTIY IMBALANCE LIMIT EXCEEDED @ FL 380 DURING FUEL BALANCE. GROUNDED - YES. PER ACARS REPORT, FUEL IMBALANCE EXCEEDED 1000LBS. NO TURBULENCE, SIGNIFICANT LOAD OR RAPID/LARGE CONTROL INPUT WAS REPORTED. CONDITIONAL INSP NOT REQUIRED PER B737-Jan 30, 2021 · N471AS · Boeing 737990ER · Aircraft Fuel SystemSDR ASAA2021012833956Modulating Valve · inoperativeAFTER ENGINE START DURING MASTER CAUTION RECALL CONT CAB ZONE TEMP LIGHT ILLUMINATED, PER QRH LIGHT EXTINGUISHED WITH MASTER CAUTION RESET. GROUNDED-YES. REMOVED AND REPLACED FLIGHT DECK ZONE MODULATING VALVE, REF B737-900 AMM 21-61-21. OPERATIONS AND LEAK Jan 28, 2021 · N471AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2021010733830Spinner · wornWHILE ACCOMPLISHING FAN BLADE LUBE ON NR 2 ENGINE, FOUND NOSE CONE WHITE SPIRAL WORN MORE THAN 50%. GROUNDED-YES. REMOVED AND REPLACED ENGINE NR 2 NOSE CONE, REF TC 78472010 FOR WORK ACCOMPLISHED.Jan 7, 2021 · N471AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2020113033620Modulating Valve · faultedAFT CAB ZONE TEMP LIGHT ON MASTER CAUTION RECALL. GROUNDED-YES. PERFORMED B737-900 FIM 21-62 TSK 801, FOUND AFT ZONE TRIM FAULT. PERFORMED FIM 21-62 TSK 835. REPLACED TRIM AIR MODULATING VALVE (AFT PAX COMPARTMENT), PER B737-900 AMM 21-61-21. LEAK AND OPENov 30, 2020 · N471AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020113033618Sensor · faultedLEFT SIDE WINDOW HEAT OVERHEAT LIGHT REMAINS ON. GROUNDED-YES. CONFIRMED LT SIDE WINDOW OVERHEAT LIGHT ILLUMINATES AND REMAINS ON. PERFORMED WHCU BITE AND FOUND LT SIDE WINDOW SENSOR FAULT, REF B737-900 FIM 30-41 TASK 801. PERFORMED FIM 30-41 TASK 811, BOTNov 30, 2020 · N471AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2020112933607Valve · faultedAFT CABIN ZONE TEMP ON RECALL. GROUNDED-YES. PERFORMED B737-900 FIM 21-62 TASK 801. FOUND AFT ZONE TRIM VALVE FAULT. PERFORMED FIM 21-62 TASK 835 AND AFT CABIN TRIM AIR VALVE FAULT RESET. NO FURTHER ACTION NECESSARY.Nov 29, 2020 · N471AS · Boeing 737990ER · Cabin Temperature Control System
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