N419AS

Service difficulty reports · 294

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 = 'N419AS' 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 ASAA2023081144563Unknown · unknownWHILE AT CRUISE, LEFT MCDU WENT BLANK AND APPEARED TO PERFORM REPEATED REBOOTS / BIT TESTS. AFTER SEVERAL MINUTES IT RETURNED TO NORMAL OPERATION. GROUNDED - YES. PERFORMED FIM TEST 34-61 TASK 836. BOTH FMC'S AND MCDU'S WORK NORMALLY NOTIFIED SEAMC JEFF.NON ASAug 11, 2023 · N419AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2023080544426Unknown · unknownFAULT ON ENG #1 (ECONOMIC) 77-20861 THE BOTTOM LEFT EGT SIGNAL OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Aug 5, 2023 · N419AS · Boeing 737990ER · Engine Temperature Indicating SystemSDR ASAA2023072944291Unknown · unknownAUTO THROTTLES WONT STAY ENGAGED. GROUNDED - YES. ACCOMPLISHED T/S FOR FAULT 22-31688 PERB737-900 FIM 22-32 TASK 819 - INITIAL EVALUATION DID NOT CONFIRM FAULT. PERFORMED AUTOTHROTTLE OPERATIONAL TEST PER B737-900 AMM 22-31-00-710-801 - ALL TESTS PASS.Jul 29, 2023 · N419AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2023072844315Unknown · unknownWHILE PERFORMING T/C 78273000 FOUND SHORT TIME FAULT 75-30602 THE TBV POSITIONS SIGNALS DISAGREE ON #2 ENG. GROUNDED - YES. (RESOLVED ON W/O: 1963318 TASKCARD: N/R-00003 ) REFERENCE DEFECT 60520579, CLEARS PLT SEAMC ASHRAF NOTIFIED. LP 60520579: PERFORMED FIJul 28, 2023 · N419AS · Boeing 737990ER · Engine Cooling SystemSDR ASAA2023072544233Unknown · unknownREFERENCE TASK CARD 78273000, #2 ENGINE HAS LONG TIME FAULT NUMBER 75-10592, THE TBV POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Jul 25, 2023 · N419AS · Boeing 737990ER · Engine Cooling SystemSDR ASAA2023072144157Unknown · unknown#2 ENGINE EGT SYSTEM FAILS ACCURACY CHECK REF AMM 77-21-00/201. INITIAL READINGS #2 ENGINE EGT S1 77.90 S2 37.78 S3 52.97 S4 92.29. GROUNDED - YES. ACCOMPLISHED #2 ENGINE EGT CLEANING AMM 77-21-00-140-801 REF LP 60520567 FOR PLT DEFERRAL RECHECK. NUMBERS BEFORJul 21, 2023 · N419AS · Boeing 737990ER · Engine Temperature Indicating SystemSDR ASAA2023071744111Unknown · unknown#2 ENG EGT HAS A RED BOX INDICATION. GROUNDED - YES. PERFORMED FIM 71-06 TASK 805. FIRST PART OF FIM CHECKS EGT SYSTEM FOR ACCURACY PER AMM 77-21-00 PAGE 201 AND THIS CHECK FAILS. S1-S4 AND S2-S3 ARE NOT WITHIN THE REQUIRED TOLERANCE OF 25%. REFERENCE LOG PAGEJul 17, 2023 · N419AS · Boeing 737990ER · Engine Temperature Indicating SystemSDR ASAA2023071744112Eec · faultyWHILE PERFORMING TASK CARD 7827300 INTERROGATE THE FMC CDU FOR ENGINE FAULTS. GROUNDED - YES. ENG #2 BITE TEST SHORT TIME MSG NBR 73-31732 CHANNEL IN CONTINOUS REST ENG #2 BITE TEST FAULT HISTORY FOR CH. B ONLY. CH. A EEC DATA NOT AVAILABLE CAN NOT ACCESS CHANJul 17, 2023 · N419AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2023070743926Unknown · unknownFA REPORTS EXIT SIGN NEAR L1 FELL OFF. GROUNDED - YES. RE INSTALLED EXIT SIGN COVER AS NEEDED.Jul 7, 2023 · N419AS · Boeing 737990ER · Emergency LightingSDR ASAA2023060443470Starter · damagedDURING START OF #1 ENG THE N2 GOT TO 24% THEN WENT BACK DOWN TO 7% START VALVE LIGHT WAS ON. WE TRIED A CROSSBLEED START, N2 ONLY GOT TO 7%. START VALVE WAS ON. GROUNDED - YES. FOUND DAMAGE ON STARTER BLADES, REMOVED AND REPLACED ENG #1 STARTER IAW B737-900 AMJun 4, 2023 · N419AS · Boeing 737990ER · Engine StarterSDR ASAA2023051243639Probe · faultyWHILE PERFORMING ASA T/C 78273000 FOUND MAINT MSG NBR 77-20861 (THE BOTTOM LEFT EGT SIGNAL T495 S3 IS OUT OF RANGE FOR NO#1 ENGINE). GROUNDED - YES. REF B737-900 FIM TASK 77-21 TASK 803, EEC BITE TEST GOOD W/O FAULTS. WIRING CHECKED GOOD PER B737-900 AMM TASK May 12, 2023 · N419AS · Boeing 737990ER · Engine Indicating SystemSDR ASAA2023050743173Unknown · unknownMOMENTARY FMC FAIL WITH ASSOCIATED VTK BUG/FLAG LATED LESS THAN 30 SECONDS. DID NOT REOCCUR. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 836 ON BOTH FMCS' :OK: NO FLAGS.May 7, 2023 · N419AS · Boeing 737990ER · Navigation SystemSDR ASAA2023041142808Unknown · unknownDUAL FMC FAILURE OCCURED AT CRUISE, LASTED ABOUT ONE MINUTE BEFORE RESTORING THEMSELVES. BOTH MAP DISPLAYS WERE TEMPORARILY LOST WITH VTK FLAG SHOWING ONLY ON LEFT SIDE. GROUNDED - YES. ACCOMPLISHED FMCS BITE PROCEDURE ON BOTH LEFT AND RIGHT FMC. NO INFLIGHT FApr 11, 2023 · N419AS · Boeing 737990ER · Navigation SystemSDR ASAA2023032442562Module · faultyDURING FINE EXTINGUISHER TEST. ENG #2 FIRE HANDLE WILL NOT ILLUMINATE. GROUNDED - YES. PERFORMED ENGINE/APU FIRE DETECTION CONTROL MODULE BITE. SHOWS #2 ENG LOOP A FAULT. PER B737-900 FIM 26-10 TASK 810, EXAMINED TERMINAL LUGS, HARNESSES AND ENG FIRE DETECTORSMar 24, 2023 · N419AS · Boeing 737990ER · Detection SystemSDR ASAA2023031842441Fire Detector · faultedENGINE # 2 ENGINE FIRE / OVERHEAT DETECTION LOOP A INOP. GROUNDED - YES. REMOVED AND REPLACED #2 ENG LOWER OVERHEAT DETECTION LOOP A. REF B737-900 AMM 26-11-01/401.Mar 18, 2023 · N419AS · Boeing 737990ER · Detection SystemSDR ASAA2023031842439Modulating Valve · faultedCONTROL CABIN AMBER ZONE TEMP LIGHT ILLUMINATES ON MASTER CAUTION RECALL. LIGHT RESETS ON MASTER CAUTION RESET. GROUNDED - YES. RAN BITE TEST B737-900 AMM 21-61-00-700-806-002 FOUND FAULT TRIM AIR VALVE FLIGHT DECK. PERFORMED PACK/ZONE TEMP CONTROL BITE CK REFMar 18, 2023 · N419AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2023013081709Wire Harness · damagedAFTER OPENING #1 T/R'S AND COWLS, FOUND CONNECTOR FOR GROUND WING THERMAL ANTI-ICE SOLENOID VALVE MISSING. GROUNDED - YES. AFTER SEARCH, FOUND CANNON PLUG WEDGED BEHIND NEARBY ACTUATOR. IT HAS DAMAGE ON CONNECTOR AND CABLE SHIELDING IS FRAYED. VERIFIED CONNECTJan 28, 2023 · N419AS · Boeing 737990ER · Ice/Rain Protection System WiringSDR ASAA2022121641187Warning Message · false activationON MASTER CAUTION RECALL CONT CAB ZONE TEMP LIGHT ILLUMINATED. RAN QRH PROCEDURE LIGHT WENT AWAY ON MASTER CAUTION RESET. GROUNDED - YES. INITIAL EVALUATION, CONT CAB ZONE TEMP LT PRESENT ON MASTER RECALL AT OVERHEAD. PERFORMED PZTC BITE IAW B737-900 FIM 21-62Dec 16, 2022 · N419AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2022121541162Fmc · faultedFMC FAIL LEFT SIDE. GROUNDED - YES. PERFORMED B737-900 FIM TASK 34-61/836. BOTH FMC'S OPERATE NORMALLY.Dec 15, 2022 · N419AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022112440924Modulating Valve · faultedMASTER CAUTION ZONE TEMP CONT CAB. GROUNDED - YES. R/R LEFT PACK TEMPERATURE CONTROL VALVE IAW B737-900 AMM 21-51-10, OPS TEST OK.Nov 24, 2022 · N419AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2022100540164Battery Pack · inoperativeWHILE PERFORMING ASA T/C 78233008 FOUND R1 EMERGENCY EXTERIOR LIGHT & R1 INTERIOR OVER HEAD EMERGENCY EXIT LIGHT INOP. GROUNDED - YES. REMOVED AND REPLACED FWD CEILING BATTERY PACK REF B737-900 AMM 33-51-06-960-805. OPS CHECK GOOD.Oct 5, 2022 · N419AS · Boeing 737990ER · Emergency LightingSDR ASAA2022091539971Autothrottle Sys · false activationA/T KICKED OFF WHEN TOGA WAS PUSHED ON T OFF. GROUNDED - YES. BOTH DFCS & A/T FAULT HISTORY SHOWS NO FAULTS. ACCOMPLISHED TOGA SW TEST REF B737-900 FIM 22-11 TASK 801, A/T SERVO MOTOR TEST & A/T SYSTEM TEST REF B737-900 AMM 22-31-91-400-801 & AMM 22-31-00-710-Sep 15, 2022 · N419AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2022080639397Fmc · failedAT 0100Z, DUAL FMC FAILURE. BOTH NAVE DISPLAYS SHOWED "VTK", FOLLOWED BY MAP DISPLAY BLANKING. MCDU'S BLANKED AND BOTH LNAV AND VNAV DISENGAGEDRESTORED AND WITHIN 90 SECONDS FULL FMC FUNCTIONS RESTORED. GROUNDED - YES. ACCOMPLISHED FMC L/H AND R/H BITE AND HADAug 6, 2022 · N419AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022080439380A/C Pack · warning lightRH PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL: EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. TROUBLESHOT PER FIM 21-53 TASK 821. FOUND THIS PACK TCV FAULT ON R/H TEMPERATURE CONTROLLER, TROUBLESHOT PER B737-900 FIM 21-62 TASK 831. PERFORMED PACKAug 4, 2022 · N419AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022062738850Fmc · false indicationFMC FAIL WITH VTK ON CAPTAINS DISPLAY. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 34-61 TASK 801, NO FAULTS FOUND, UNABLE TO DUPLICATE DEFECT.Jun 27, 2022 · N419AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022062138745Battery Pack · inoperativeLH ROW 27-30 AREA EMERGENCY LIGHTS INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK S/N 217434 AT LH AFT GALLEY CEILING, AND BATTERY PACK AND POWER SUPPLY ABOVE CEILING PANEL AT FS 727H+16. OPS CHECKS GOOD IAW B737-900ER AMM 33-51-06-960Jun 21, 2022 · N419AS · Boeing 737990ER · Emergency LightingSDR ASAA2022062138744Battery Pack · inoperativeLH ROW 27-30 AREA EMERGENCY LIGHTS INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK S/N 102355 ABOVE CEILING PANEL AT FS 727H+16. OPS CHECKS GOOD IAW B737-900ER AMM 33-51-06-960-805 AND 33-51-06-960-806.Jun 21, 2022 · N419AS · Boeing 737990ER · Emergency LightingSDR ASAA2022062138743Battery Pack · inoperativeLH ROW 27-30 AREA EMERGENCY LIGHTS INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK S/N 217546 AT LH AFT GALLEY CEILING, AND BATTERY PACK AND POWER SUPPLY ABOVE CEILING PANEL AT FS 727H+16. OPS CHECKS GOOD IAW B737-900ER AMM 33-51-06-960Jun 21, 2022 · N419AS · Boeing 737990ER · Emergency LightingSDR ASAA2022061038737Web · corrodedAFT PIT DOOR CUTOUT LWOER SILL WEB HAS CORROSION. (FOUND UPON REMOVAL OF CENTER SCUFFPLATE FOR REPAIR). GROUNDED - YES. REMOVED AND REPLACED OUT OF LIMITS SILL WEB IN AFT CARGO IAW B737-900 SRM 51-40-02-0G-0W 1.25" O .050" R .041" L 42" D .009".Jun 10, 2022 · N419AS · Boeing 737990ER · Fuselage Main, Plate/SkinSDR ASAA2022051738403Harness · failedENGINE # 1 FIRE DETECTOR LOOP A TESTS BAD. GROUNDED - YES. STILL SHOWS LOOP A LH CORE DETECTOR ON BITE. RESISTANCE CK AT LEFT CORE WITHIN LIMITS. CONTINUITY SHOWS OPEN FROM LH CORE TO DP1501. REPLACED MW0325 CORE HARNESS REF B737-900 AMM 26-11-02 & B737-900 WDMay 17, 2022 · N419AS · Boeing 737990ER · Detection SystemSDR ASAA2022050538210Start Valve · failedNO N1 OR N2 ROTATION DURING THE START SEQUENCE- NUMBER 1 ENGINE. GROUNDED - YES. REMOVED AND REPLACED #1 ENG START VALVE REF B737-900 AMM 80-11-03. PERFORMED PNEUMATIC LEAK CHECK REF AMM 71-00-00, NO LEAKS DETECTED, OPS CHECK GOOD, ETOPS SIGNIFICANT SYSTEM GROMay 5, 2022 · N419AS · Boeing 737990ER · Engine CrankingSDR ASAA2022041838064Unknown · unknownHF/SAT XFER #2 SWITCH CAME OUT AND WILL NOT SEAT BACK INTO SLOT. GROUNDED - YES. RESEATED HF/SAT TRANSFER SWITCH. OPS CHECK GOOD.OK FOR SVC.Apr 18, 2022 · N419AS · Boeing 737 · HF Communications SystemSDR ASAA2022041638062Unknown · faultyAUTO THRUST DISENGAGED AND WOULD NOT REENGAGE. GROUNDED - YES. CONFIRMED FAULT, A/T FAULT REVIEW SHOWS NUMEROUS ASM-1 FAULT MSG# 22-31687 "RATE MONITOR". REMOVED & REPLACED ASM-1 REF B737-900 AMM 22-31-91, OPS CK NML REF AMM 22-31-00-710-801. PULLED & RESET 1 Apr 16, 2022 · N419AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2022032037716Unknown · unknownVTK OBSERVED ON FIRST OFFICER'S NAV DISPLAY WITH CORRESPONDING LOSS OF VNAV LNAV. SYSTEM SELF CORRECTED AFTER A COUPLE OF MINUTES. GROUNDED - YES. VERIFIED R FMC HAD AN INTERMITTENT FAULT (PRES POS LAT RATE FAULT) CYCLED BOTH FMC C/B'S. ACCOMP FMC SENSOR TEST,Mar 20, 2022 · N419AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2022022037528Lens · missingLENS COVER MISSING ON OVERHEAD EMERGENCY LIGHT ROW 21A. GROUNDED - YES. INSTALLED NEW LENS COVER AS REQUIRED. THIS CLEARS MEL 33-15D C/N 20035419 AND PLACARD REMOVED SEAMC ANDY NOTIFIED.Feb 20, 2022 · N419AS · Boeing 737990ER · Emergency LightingSDR ASAA2022020237326Transceiver · inoperativeHF#1 TRANSMITTER INOP (BOTH SEATS). WE CAN HEAR HF #1 AND GET SELCAL ON HF #1, BUT NO TRANSMIT CAPABILITY. GROUNDED - YES. VERIFIED DISCREP. REF B737-900 AMM 23-11-21, REMOVED/REPLACED HF-1 TRANSCEIVER, FOUND TO BE INOP - BAD FROM STOCK. REINSTALLED ORIGINAL HFeb 2, 2022 · N419AS · Boeing 737990ER · HF Communications SystemSDR ASAA2022012837283Modulating Valve · faultyUPON PUSHBACK ON THE AFTER START, CHECKLIST WE DISCOVERED LEFT PACK LIGHT ON , LIGHT EXTINGUISHED UPON RESET. GROUNDED - YES. REMOVED AND REPLACED LH TEMPERATURE CONTROL VALVE IAW B737-900 AMM 21-51-10-000-801 AND 21-51-10-400-801, ETOPS GROUND FUNCTIONAL CHECJan 28, 2022 · N419AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2021122537008None · faultyDURING ACCOMPLISHMENT OF " DESCENT C/L" RH PACK ILLUMINATED ON M/C RECALL, EXTINGUISHED ON M/C RESET. GROUNDED - YES. PERFORMED BITE CK B737-900 FIM 21-62 TASK 801 FOUND RH RAM AIR ACTUATOR FAULT. REMOVED AND REPLACED RH RAM AIR ACTUATOR AS REQUIRED OPS CKD GODec 25, 2021 · N419AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA2021121636928None · faultyAFTER PUSH, ON RECALL, MASTER CAUTION AND RT PACK ILLUMINATED. RESET W/ MASTER CAUTION. GROUNDED - YES. RAM AIR INLET ACTUATOR #2 REMOVED/REPLACED IAW B737-900 AMM 21-51-21 OPS CHECK OK.Dec 16, 2021 · N419AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2021112936756Unknown · unknownHF1 FAIL LIGHT ON COM PANEL. GROUNDED - YES. PERFORMED RESET & OPS OF HF1 IAW PER FIN 23-11-21, OPS CHK GOOD, OK FOR SERVICE.Nov 29, 2021 · N419AS · Boeing 737990ER · HF Communications SystemSDR ASAA2021111636675Actuator · leakingFOUND ON PREFLIGHT - JET FUEL DRIP (1 DRIP PER 4-5 SECONDS) UNDER #2 ENGINE NACELLE. REPORTED AT 1852 Z. GROUNDED - YES. #2 ENG FUEL LEAKS FROM LEFT VSV DRAIN: 2 DROPS P/M, RIGHT VSV DRAIN: 9 DROPS P/M, AND OIL / FUEL HEAT EXCHANGER PAD DRAIN: 2 DROPS P/M WITHNov 16, 2021 · N419AS · Boeing 737990ER · Compressor Bleed ControlSDR ASAA2021111036569Regulator · failedPERFORM HEALTH CHECK ON NO. 2 ENG BLEED AIR SYS PER FOLLOW UP REPORT OF RIGHT BLEED PRESSURE FLUCTUATING. GROUNDED - YES. FOUND NO. 2 ENG HIGH STAGE REGULATOR AT FAULT PER T/C NG-36WC-00002-2 STEP 04(L). REMOVED AND REPLACED HIGH STAGE REGULATOR PER B737-900 ANov 10, 2021 · N419AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2021110836548Regulator · inoperativeWHILE PERFORMING TASK CARD NG-36WC-00002-2, FOUND BLEED AIR REGULATOR'S SOLENOID NOT WORKING, ENGINE #2. GROUNDED - YES. REMOVED & REPLACED BLEED AIR REGULATOR IAW B737-900 AMM 36-11-03. OPS CHECK GOOD. NO LEAKS NOTED.Nov 8, 2021 · N419AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2021110536526Unknown · unknownON MASTER CAUTION RECALL, CONT CAB ZONE TEMP LIGHT ILLUMINATES. EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. REF B737-900 FIM 21-62 TASK 848, #2 PZTC FREV FLT LOGGED FLT DECK TRIM VLV FAULT, FAULT RESETTABLE. BOTH PZTC'S BITE VERIFY TESTED GOOD W/O CUNov 5, 2021 · N419AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2021103136460Precooler · inoperative#2 ENGINE FAN AIR VALVE SEAL DISLODGED AND SITTING ON TOP OF ENGINE CORE. REF B737-900 IPC 36-12-02-01A ITEM 30. (ATTACHED TO PRE-COOLER). GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE PRECOOLER VALVE REF. 36-12-02. GROUND OPS CHECKS GOOD. PERFORMED A FOD INSOct 31, 2021 · N419AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2021100336208None · dischargedEMERGENCY EXIT BULLNOSE LIGHTS INOP @ 25 DEF & 29 DEF. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY BATTERY PACK REF B737-900 AMM 33-51-06-960-805. OPS CHECK GOOD.Oct 3, 2021 · N419AS · Boeing 737990ER · Emergency LightingSDR ASAA2021091535958Control Panel · inoperativeDURING CURISE AT FL 370 WITH AUTOPILOT "B" ENGAGED AUTOPILOT DISENGAGED, F/O'S FLT DIRECTOR DISAPPEARED AND F/O'S HEADING BUG WOULD NOT RESPOND TO MCP INPUTS.. CAPT'S SIDE AND "A" AUTOPILOT FUNCTIONED NORMALLY. GROUNDED - YES. REMOVED & REPLACED DFCS MODE CONTSep 15, 2021 · N419AS · Boeing 737990ER · Autopilot SystemSDR ASAA2021091335949Unknown · faultedFIRST OFFICER'S HEADING BUG DOES NOT RESPOND TO MCP HDG, FIRST OFFICER'S FLIGHT DIRECTOR DISAPPERAED ON APPROACH. GROUNDED - YES. POWER DOWN THE A/C FOR 10 MIN, POWER UP THE A/C REALIGNING IRS. PERFORMED MODE CONTROL PANEL INSTALLATION TEST IAW B737-900 AMM 22Sep 13, 2021 · N419AS · Boeing 737990ER · Indicating/Recording SystemSDR ASAA2021090935926Switch · inoperativeLNAV SWITCH INOP. GROUNDED - YES. REMOVED & REPLACED DFCS MCP REF B737-900 AMM 22-11-34. ACCOMPLISHED MCP LRU REPLACEMENT TEST (GP 32) REF AMM 22-11-34, DFCS LAND VERIFY TEST (GP 49) REF AMM 22-11-00, & HGS SYSTEM TEST REF SMM 34-36-00, OPS CK NML.Sep 9, 2021 · N419AS · Boeing 737990ER · Autopilot SystemSDR ASAA2021082035767Switch · faultyUPON LANDING. MASTER CAUTION OVERHEAD PSEU LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED FIM TASK 32-09 TASK 801 FOUND FAULT CODE 31-52002 MP80017 INIT MIG-2C # 40-0003313. MP80017 REF L/P 60222388 FOR "BP" DEFERRAL. 77899. R&R ENG1 SWITCH PACK ASSEMBLY (M1766)Aug 20, 2021 · N419AS · Boeing 737990ER · Engine Controls
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