N537AS

Service difficulty reports · 285

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 = 'N537AS' 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 ASAA2023020841892Actuator · faultyDURING CRUISE FLIGHT JUST BEFORE DESCENT WHEN MASTER RECALL WAS PUSHED AIR COND AND LEFT PACK LIGHT ILLUMINATED AND REMAINED ILLUMINATED UNTIL MASTER CAUTION PUSHED AIR COND AND PACK LIGHT EXTINGUISH. GROUNDED - YES. REMOVED AND REPLACED RAM AIR ACTUATOR REF BFeb 8, 2023 · N537AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2023013071706Fmc · failedINTERMITTENT VTK ON FO'S SIDE AFTER LANDING. GROUNDED - YES. PULLED AND TAGGED 2 EA C/B'S FOR F/O'S FMC. REMOVED AND REPLACED F/O'S FMC PER B737-800 AMM 34-61-02. REMOVED TAGS AND RESET 2 EA C/B'S PERFORMED GOOD OPS TEST, SOFTWARE LOAD AND ADJUSTED PERFORMANCEJan 27, 2023 · N537AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2023013051680Warning Message · false activation'FAIL' INDICATION ON RADIO TUNING PANELS WHEN HF #2 IS SELECTED. GROUNDED - YES. ACCOMPLISHED HF 2 LRU BITE, CHECKS GOOD. NO FAIL MESSAGES DISPLAYED. HF 2 TUNING OPS NORMAL. GOOD FOR SERVICE. REF B737-800 FIM 23-11 TASK 801. SEAMC DARWIN.Jan 25, 2023 · N537AS · Boeing 737890 · HF Communications SystemSDR ASAA2023012141645Guide Vane · cracked#1 ENG, WHILE DOING HPT BLADE BORESCOPE INSPECTION, FOUND LPT STAGE 1 NOZZLE GUIDE VANE APPROX, AT 9 OCLOCK POSITION HAS 1 AXIAL CRACK BWTEEN 1/2 TO 3/4 CHORD LONG. GROUNDED - YES. ON DEFERRAL.Jan 21, 2023 · N537AS · Boeing 737890 · Turbine SectionSDR ASAA2023012301582Actuator · degradedLEFT "PACK" LIGHT ILLUMINATED ON PRESURIZATION PANEL PASSING FL180 DURING CLIMB. LIGHT EXTINGUSHED AFTER RUNNING QRH PROCEDURE WITH TRIP RESET APPROX 2 MIN LATER LEFT "PACK" LIGHT CAME ON AGAIN AND PACK WAS SHUT OFF PER QRH PROCEDURE - LIGHT REMAINED ILLUMIUATJan 20, 2023 · N537AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2023011441524Hf Comm · faultedUNABLE TO TRANSMIT ON HF #1. RECEIVING OK. ATTEMPTED MULTIPLE FREQUENCIES ON BOTH ACP'S, HF #2 OPS NORMAL. GROUNDED - YES. RESET SYSTEM AND PERFORMED OPS CHECK, GROUND FUNCTIONAL CHECK FOR THIS ETOPS SYSTEM GOOD IAW B737-800 AMM 23-11-00-730-801.Jan 14, 2023 · N537AS · Boeing 737890 · HF Communications SystemSDR ASAA2023011321501Circuit Breaker · trippedLEFT FORWARD WINDOW OVERHEAT LIGHT ILLUMINATED ON GROUND. GROUNDED - YES. INITIAL EVALUATION, FOUND 2 CB POPPED OPEN FOR WHCU(S) ON P18-3 E1/2. PERFORMED CB RESET INSPECTION IAW B737-800 AMM 20-60-01, NO DEFECTS NOTED. RESET 2 CB X2. RAN WHCU BITE IAW AMM 30-4Jan 12, 2023 · N537AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2023011321500Circuit Breaker · trippedRIGHT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED ON THE GROUND. GROUNDED - YES. INITIAL EVALUATION, FOUND 2 CB POPPED OPEN FOR WHCU(S) ON P18-3 E1/2. PERFORMED CB RESET INSPECTION IAW B737-800 AMM 20-60-01, NO DEFECTS NOTED. RESET 2 CB X2. RAN WHCU BITE IAW AJan 12, 2023 · N537AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2022112040846Knob · brokenHDG KNOB ON MCP IS BROKEN. GROUNDED - YES. REMOVED AND REPLACED MCP REF B737-800 AMM 22-11-34. LRU TESTS PASSED.Nov 20, 2022 · N537AS · Boeing 737890 · Autopilot SystemSDR ASAA2022102340484Button · damagedON THE FO'S MCDU THE 6R BUTTON IS INTERMITTENT THE RUBBER COVER HAS RIPPED AND HAS ALLOWED THE PLASTIC PUSH BUTTON (UNDER THE COVER) TO BE DISLODGED. GROUNDED - YES. REMOVED & REPLACED F/O MCDU REF AMM 34-61-01, OPS CK NORMAL.Oct 23, 2022 · N537AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2022092840102Fmc · failedVTK FLAG CAPTAINS SIDE FMC CAME BACK AFTER 30 SECONDS. GROUNDED - YES. PERFORMED B737-800 FIM TASK 34-61-836 FMC OPERATIONAL RESTORED.Sep 28, 2022 · N537AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2022081439507Spacer · debondedWHILE ACCOMPLISHING ASA TC #78472010, FAN BLADE LUBE #2 ENG, FOUND FAN BLADE SPACERS #1,5, & 18 W/ DISBONDED ELASTOMER OUT OF LIMITS. REQUIRES REPLACEMENT OF SPACERS. GROUNDED - YES. REMOVED AND REPLACED SPACERS #1, 5, 18. REF ASA T/C #78472010.Aug 14, 2022 · N537AS · Boeing 737890 · Turbine Engine Air Inlet SectionSDR ASAA2022061538670Gasket · torn# 2 ENG PYLON DRAIN LEAKING FUEL. GROUNDED - YES. LEAK FOUND TO COMING FROM MAIN TANK ACCESS PANEL 632 BB. REMOVED PANEL 632 BB PER B737-800 AMM 28-11-11 FOUND ALUMINUM MESH GASKET TORN. DISGARDED GASKET. NEW GASKET AND ACCESS PANEL INSTALLATION STILL REQUIREDJun 15, 2022 · N537AS · Boeing 737890 · Fuel StorageSDR ASAA2022052438442Coupler · faultyUNABLE TO TRANSMIT ON HF2. SELCAL WORKS, CAN HEAR ATC, BUT CANT TRANSMIT. TUNE TONE STAYS ON FOR A WHILE WHEN INITIALLY TUNING RADIO TO A FREQUENCY. GROUNDED - YES. VERIFIED HF#2 RADIO ONLY RECEIVES, DOESN'T TRANSMIT. REMOVED AND REPLACED HF2 ANTENNA COUPLER RMay 24, 2022 · N537AS · Boeing 737890 · HF Communications SystemSDR ASAA2022050538228Windshield · faultyRIGHT SIDE #1 FWD WINDOW HEAT OVHT ILLUMINATED. FOLLOWED QRH #1 FWD WINDOW OVHT ILLUMINATED AGAIN- SWITCH SELECTED OFF RIGHT SIDE. GROUNDED - YES. REMOVED AND REPLACED RIGHT SIDE R-1 WINDOW REF B737-800 AMM 56-11-21-400-802 OPS AND LEAK CHECK GOOD.May 5, 2022 · N537AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2022042238094Comms Unit · failedUNABLE TO MAKE VOICE CONTACT WITH HF#1. HF#1 APPEARS TO RECEIVE VOICE. GROUNDED - YES. PERFORMED HF COMM SYSTEM OPS TEST IAW B737-800 AMM TASK 23-11-00-710-801 NO DEFECTS NOTED OPS CK NORMAL.Apr 22, 2022 · N537AS · Boeing 737890 · HF Communications SystemSDR ASAA2022042238090Autopilot Sys · disconnectedAUTOLAND AND HGS AIII UNSATISFACTORY. IN FLARE NO AIII, APPROACH WARN AND AUTOPILOT DISCONNECTED. GROUNDED - YES. ACCOMPLISHED LAND VERIFY TEST B737-800 AMM TASK 22-11-00-700-801 & HGS SYSTEM TEST PER SMM 34-36-00 SECTION 500. ALL TESTS PASS.Apr 22, 2022 · N537AS · Boeing 737890 · Autopilot SystemSDR ASAA2022041638035Unknown · faultyHR#2 RADIO WILL NOT TRANSMIT FROM EITHER CAPT OR FO ACP. RECEIVES OK. GROUNDED - YES. REMOVED AND REPLACED TRANSCEIVER REF B737-800 AMM 23-11-21. ETOPS GROUND VERIFICATION SUCCESSFUL.Apr 16, 2022 · N537AS · Boeing 737 · HF Communications SystemSDR ASAA2022032037737Unknown · unknownRIGHT FMC SHOWS MAP FLAG. GROUNDED - YES. VERIFIED FAULT, CYCLED FMC TRANSFER SWITCH TO LEFT AND BACK TO NML. FMC RIGHT RECOVERED. CYCLED R FMC C/B. ACCOMP SENSOR TEST. ALL SHOW OK. REF B737-800 AMM 34-61-00-710-026.Mar 20, 2022 · N537AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2022030637662Shutoff Valve · faultyON TAXI -OUT NOTICED SPLIT ON N1 FOR TAKE-OFF POWER. LOOKED AT DUCT PRESSURE GAUGE AND LEFT DUCT INDICATED ZERO. CONFIGURED APU TO BLEED DUCT AND PRESSURE RETURNED TO NORMAL. WENT BACK TO #1 BLEED ON AND LEFT PRESSURE DROPPED TO ZERO AGAIN. GROUNDED - YES. NO Mar 6, 2022 · N537AS · Boeing 737890 · Pneumatic Distribution SystemSDR ASAA2022021737508Unknown · unknownCA WX RADAR SHOWS "WXR FAIL"FO WX RADAR SHOWS " WXR FAIL" COMT STAB. GROUNDED - YES. PULLED L RESET C/B OB PGI PANEL, PERFORMED WEATHER PROCEDURE IAW B737-800 FIM 34-43 TASK 801. NO FAULTS. OPS CK GOOD.Feb 17, 2022 · N537AS · Boeing 737890 · Independent Position Determining SystemSDR ASAA2021123037051Heater · inoperativeAFTER T/O NOTICED "L ELEV PITOT AMBER LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED FEEL SYSTEM PITOT PROBE REF B737-800 AMM 27-31-94/401. ACCOMPLISHED ELEVATOR PITOT SYSTEM LEAK TEST. GROUND VERIFICATION LEAK TEST PASSED REF B737-800 AMM 27-31-17-78Dec 30, 2021 · N537AS · Boeing 737890 · Pitot/Static Anti-Ice SystemSDR ASAA2021122436991Unknown · faultyLNAV AND VNAV WILL NOT ARM ON THE GROUND. GROUNDED - YES. DFCS BITE TEST SHOWS "LNAV ENG FMC DATA INV, CHAN-B MCP, MSG# 22-11822. ACCOMPLISHED B737-800 FIM 22-11 TASK 811 FMC FAULT ISOLATION. REMOVED & REPLACED FMC #2 REF B737-800 AMM 34-61-02. PULLED & RESET Dec 24, 2021 · N537AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2021081335719Fmc · failedTHE FIRST OFFICERS MULTI-FUNCTION CONTROL DISPLAY UNIT HAS A FAILED LINE SELECT KEY. THE LEFT HAND #2 LINE SELECT KEY IS INTERMITENT. WE TRIED A HARD PUSH AND A LONG PUSH. THE LINE SELECT KEY WOUL NOT WORK WHEN ATTEMPTING TO MAKE A CHANGE IN THE FMC NOR IN THEAug 13, 2021 · N537AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2021072335496Control Valve · failedRIGHT HAND PACK LIGHT ILLUMINATED ON RECALL. EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMPERATURE CONTROLLER BITE TEST REF B737-800 AMM 21-61-00-700-806-002. R/H PACK BITE TEST FAILED FOR TCV. FOUND TCV TO BE SEIZED UP. REJul 23, 2021 · N537AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2021070235219Transceiver · inoperativeSAT 1 TRANSMIT WEAK AND CUT OUT. NO SIDE TONE HEARD DURING TRANSMISIONS. GROUNDED - YES. REPLACED SATCOM RIT. OPS CHECK GOOD COMMUNICATION WITH DISPATCH 5X5. B737-800 AMM 23-15-00 ROTABLE PART VERIFIED BY QC . JOE FROM DISPATCH CONTACTED.3313235.Jun 30, 2021 · N537AS · Boeing 737890 · Communications SystemSDR ASAA2021061735136Battery Pack · inoperativeEMERGENCY LIGHTS COMMON TO POWER SUPPLY M1576 INOP. GROUNDED - YES. REPLACED BATTERY PACK ASSEMBLY M1676. OPS CHECK GOOD. AIR GRILL CLOSED. B737-800 AMM 33-51-06.Jun 17, 2021 · N537AS · Boeing 737890 · Emergency LightingSDR ASAA2021061735135Battery Pack · inoperativeR/H EMERGENCY OVERWING EXIT LIGHTS AND GROUND ILLUMINATION LIGHT INOP. GROUNDED - YES. REPLACED BATTERY PACK ASSEMBLY M1671. OPS CHECK GOOD. AIR GRILL CLOSED. B737-800 AMM 33-51-06.Jun 17, 2021 · N537AS · Boeing 737890 · Emergency LightingSDR ASAA2021061735132Power Supply · inoperativeEMERGENCY LIGHTS AT L1 DOOR INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY WITH BATTERY PACK, OPS CHECK 'GOOD' IAWB737-800 AMM 33-51-06-960-805.Jun 17, 2021 · N537AS · Boeing 737890 · Emergency LightingSDR ASAA2021052834961Warning Light · false activationUPON COMPLETION OF AFTER START CK LIST ON RECALL "ELEC" LIGHT ILLUMINATED - FOLLOWED QRH. GROUNDED - YES. P5-13 MODULE LOGGED AUX BATT CHARGER INOP I, STAT INV INOP I, SPCU INOP I. ACCOMP B737-800 FIM 24-31 #801, ALL FAULTS CLEARED AND TEST NML PER SAME. GND VMay 28, 2021 · N537AS · Boeing 737890 · Central WarningSDR ASAA2021052834957Warning Message · false activationUPON COMPLETION OF AFTER START CK LIST - RECALL "PACK" LIGHT ILLUMINATED FOR L PACK. COMPLETED QRH NOT ABLE TO RESET. GROUNDED - YES. FOUND LEFT PACK LIGHT ILLUMINATING ON RECALL AND EXTINGUISHING ON RESET. #1 ZONE CONT LOGGED RAM AIR ACT FAULT. FAULT CLEARED May 28, 2021 · N537AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2021052534932Indicator · intermittentCENTER TANK FUEL GAUGE AT REFUELING STATION DISPLAYS FAIL. INTERMITTENT. GROUNDED - YES. PER B737-800 FIM 28-21 TASK 805 AND TROUBLESHOT DOWN FOR CENTER QUANTITY INDICATOR TO BE REPLACED. REMOVED AND REPLACED CENTER QUANTITY INDICATOR. PERFORMED INSTALL TEST GMay 25, 2021 · N537AS · Boeing 737890 · Fuel Quantity IndicatorSDR ASAA2021050534764Control Valve · faultedREF T/C NG-21EA-23228-1, FOUND TCV FAULT #2 PZTC BITE CK REF 737NG FIM 21-62 TASK 801. GROUNDED - YES. PERFORMED BITE CHECK ON 1 AND 2 CONTROLLER. CONFIRMED L/H TCV INOP. REMOVED L/H TCV. REF B737-800 AMM 21-51-10-000-801, B737-800 FIM 21-62 TASK 874. INSTALLEMay 5, 2021 · N537AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2021050434751Heater · inoperativeAFTER START, R ELEV PITOT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED & REPLACED R/H FEEL SYSTEM PITOT PROBE REF B737-800 AMM 27-31-94. OPS CHECK & LEAK CHECK NORMAL.May 4, 2021 · N537AS · Boeing 737890 · Pitot/Static Anti-Ice SystemSDR ASAA2021040434510Fmc · malfunctionedINITIATED VNAV CLIMB FROM FL 360 TO FL 380 JUST WHILE PASSING 30N54. UPON LEVELING @ FL 380 RIGHT FMC FAILED INTERMITTENTLY TWICE. THEN LEFT FMC FAILED. QRH APPLIED AS BOTH FMC'S RESOLVED ON OWN. AFTER RESOLUTION, FMC,GPS, AND IRS POSITIONS ALL NORMAL. ANP-.03Apr 4, 2021 · N537AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2021031134276Smoke Detector · false activationDURING CRUISE FLIGHT ATTENDANT REPORT SMOKE ALARM IN AFT FWD LAV GOING OFF. GROUNDED - YES. DIVERSION TIME 23 MINUTES - INSPECTED LAV G NO EVIDENCE OF SMOKE OR FIRE PERFORMED SP2 PROCEDURE 2 DEACTIVATE SMOKE DETECTOR APPLIED REF B737-800 AMM 26-14-01-000-802 AMar 11, 2021 · N537AS · Boeing 737890 · Smoke DetectionSDR ASAA2021022534196Modulating Valve · faultedZONE TEMP LIGHT ILLUMINATES ON RECALL FOR CONT CAB EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. TROUBLESHOT PER B737-800 FIM 21-62 TASK 842. FOUND FLT DECK TRIM VALVE FAULT LIGHT ON #2 PACK/ZONE TEMPERATURE CONTROLLER ILLUMINATED. TROUBLESHOT PER FIFeb 25, 2021 · N537AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2021022334181Modulating Valve · faultedCONT CAB ZONE TEMP ANNUNCIATOR ILLUMINATED ON RECALL. EXTINGUISHES WHEN RESET. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE EST REF B737-800 AMM 21-61-00, SHOWS HARD FAIL "ZONE TRIM VALVE" ON NR 1 CONTROLLER. ACCOMPLISHED B737-800 FIM 21-62 Feb 23, 2021 · N537AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2021020934073Fmc · malfunctionedAT CRUISE ALT FL350, /O'S NAV DISPLAY SHOWED VTK MSG LIGHT ILLUMINATED AND INTERMITTENT SINGLE FMC OPERATION DISPLAYED ON MCDU. FOLLOWED QRH PROCEDURES AND HAD DUAL OPS RESTORED. GROUNDED - YES. VERIFIED FMC -R SHOWED A RE-SYNC IN FLT. OPS NORM R. FMC BITE CK Feb 9, 2021 · N537AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2021011533885Lamp · inoperativeLT FWD OVERWING EMERGENCY LIGHT INOPERABLE. GROUNDED-YES. REMOVED & REPLACED LT FWD OVERWING EMERGENCY LIGHT, REF B737-800 AMM 33-51-04. OPERATIONS CHECK GOOD, NO DEFECTS AT THIS TIME.Jan 15, 2021 · N537AS · Boeing 737890 · Emergency LightingSDR ASAA2020123133801Sensor · inoperativeRIGHT SIDE WINDOW OVERHEAT LIGHT REMAINS ILLUM AFTER 5 MINUTE COOL DOWN (AT 41,000 FEET) OAT 56C. GROUNDED-YES. PERFORMED B737-800 FIM 30-41 TASK 812, FOUND SENSOR FAULTS ON WHCU. R2 WINDOW ALREADY ON SPARE SENSOR. REMOVED AND INSTALLED NR 2 OPENABLE WINDODec 31, 2020 · N537AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2020122533775Wire Harness · shortedWHILE PERFORMING TC NR 78273000, NR 1 ENGINE HAS LONG TIME FAULT, NR 75-10591 TBV POSITION SIGNAL IS OUT OF RANGE. GROUNDED-YES. CONFIRMED FAULT ACTIVE ON FLIGHT LEGS 2 AND 5. PERFORMED B737-800 FIM 75-21 TASK 802. FOUND PINS C, V, AND (LOWERCASE) Q ON DP09Dec 25, 2020 · N537AS · Boeing 737890 · Turbine Engine System WiringSDR ASAA2020121933735Warning Light · false activationCONT CAB ZONE TEMP LIGHT ON RECALL. EXTINGUISHES WHEN MASTER CAUTION PRESSED. GROUNDED-YES. INITIAL EVALUATION, NO LIGHT ON MASTER RECALL. PERFORMED B737-800 FIM 21-62 TASK 801. BOTH PZTC'S SHOW GREEN ON ALL 3 STAGES ON BITE ON 1ST TRY. CLEANED CONT CAB Dec 19, 2020 · N537AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2020121333690Autothrottle Sys · malfunctionedIN BOTH VNAV AND LEVEL CHANGE, AUTO THROTTLES TRANSITION DIRECTLY TO THE ARM MODE AND DO NOT RETARD. GROUNDED-YES. ACCOMPLISHED B737-800 FIM 22-31 TASK 801, NO FAULTS FOUND.Dec 13, 2020 · N537AS · Boeing 737890 · Auto Throttle SystemSDR ASAA2020121233672Radio · inoperativeHF2 RADIO INDICATES "INOP" IN BOTH WINDOWS. GROUNDED-YES. ACCOMPLISHED RADIO TUNING INOPERABLE RESET, REF B737-800 AMM 23-12-41. OPERATIONS NORMAL HF2 INDICATES SELLECTED FREQUENCIES.Dec 12, 2020 · N537AS · Boeing 737890 · HF Communications SystemSDR ASAA2020120333632Actuator · inoperativeWITH RECALL, PACK LIGHT ILLUMINATED AND THEN EXTINGUISHED WITH MASTER CAUTION RESET, LEFT PACK. GROUNDED-YES. PERFORMED B737-800 FIM TASK 21-61-00, LEFT PACK SHOWS RAM AIR ACCT. REMOVED AND REPLACED LEFT PACK RAM AIR ACTUATOR, PER B737-800 AMM 21-51-51-000-Dec 3, 2020 · N537AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2020112833605Modulating Valve · faultyON RECALL ZONE TEMP CONT CAB ILLUMINATES CLEARS ON RECALL. GROUNDED-YES. REMOVED AND REPLACED TRIM MODULATING VALVE, REF B737-800 AMM 21-61-21. OPERATIONS CHECK GOOD.Nov 28, 2020 · N537AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2020111133542Warning Light · false activationLEFT PACK LIGHT ILLUMINATED ON MASTER RECALL EXTINGUISHED ON RESET. GROUNDED-YES. VERIFIED DISCREPANCY, PERFORMED LEFT PACK/ZONE TC BITE B737-800 AMM 21-61-00-700-806-002. FOUND LEFT RAM AIR ACT FAULT 1 TIME. ABLE TO CLEAR FAULT. ACCOMPLISHED B737-800 FIMNov 11, 2020 · N537AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2020110933538Hmu · leakingDURING LEAK CHECK OF NR 2 ENGINE HMU LINE, FOUND NR 2 ENGINE HMU PAD DRAIN LINE DRIPPING FUEL BEYOND LIMITS, REF B737-800 AMM 71-71-00-200-801. GROUNDED-YES. REMOVED AND REPLACED NR 2 ENGINE HMU, REF T/C N8473000 & N8473001. OPERATIONS/LEAK CHECKS NORMAL.Nov 9, 2020 · N537AS · Boeing 737890 · Fuel Controlling SystemSDR ASAA2020110433490Modulating Valve · faultedCONT CAB ZONE TEMP LIGHT COMES ON AT RECALL. GOES OUT WITH MASTER CAUTION RESET. GROUNDED-YES. PERFORMED BITE CHECK, REF B737-800 AMM 21-61-00 FOUND FLIGHT DECK TRIM AIR FAULT. REMOVED AND REPLACED CONTROL COMPT TRIM AIR MODULATING VALVE, REF AMM 21-61-21.Nov 4, 2020 · N537AS · Boeing 737890 · Cabin Temperature Control System
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