N531AS

Service difficulty reports · 380

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 = 'N531AS' 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 ASAA2023031142356Indicator · faultedFUELER REPORTS REFUEL PANEL CENTER TANK QTY INDICATOR NOT TESTING WHEN SELECTED. GROUNDED - YES. REMOVED AND REPLACED CENTER FUEL QUANTITY INDICATOR. PERFORMED GOOD INSTALLATION TEST REF B737-800 AMM 28-41-61/401.Mar 11, 2023 · N531AS · Boeing 737890 · Fuel Indicating SystemSDR ASAA2023022242053Power Supply · inoperativeR1 DOOR EMERGENCY LIGHTS BOTH EXTERIOR AND INTERIOR INOP. GROUNDED - YES. REMOVED REPLACED AND OPS CHECKED R1 DOOR EMERGENCY LIGHT POWER SUPPLY S/N 131987 IAW B737-800 AMM 33-51-06-960-806.Feb 22, 2023 · N531AS · Boeing 737890 · Emergency LightingSDR ASAA2023020642032Battery Pack · unknownAFT EXTERIOR OVERWING EMERGENCY LIGHT FAILS TO STAY ILLUMINATED FOR 15 MINUTES. GROUNDED - YES. REPLACED AFT EXTERIOR OVERWING EMERGENCY LIGHT BATTERY PACK S/N 474070 WITH SERVICEABLE BATTERY PACK, OPS CHECK GOOD, IAW B737-800 AMM 33-51-06-960-805.Feb 6, 2023 · N531AS · Boeing 737890 · Emergency LightingSDR ASAA2023020141756Stator · coked#2 ENG EEC ALTERNATOR SHOWS EVIDENCE OF COKING. GROUNDED - YES. REMOVED AND REPLACED #2 ENG EEC ALTERNATOR REF B737-800 AMM 73-21-08-400-801-F00.Feb 1, 2023 · N531AS · Boeing 737890 · Fuel Controlling SystemSDR ASAA2022121441134Modulating Valve · failedAFTER ENGINE START AND PRESSING RECALL ZONE TEMP LIGHT ILLUMINATED, EXTINGUISHED AFTER PRESSING MASTER CAUTION. GROUNDED - YES. CONFIRMED FAULT, R/H PACK/ZONE TEMP CONTROLLER SHOWS HARD FAIL "FLIGHT DECK TCV" (V143). REMOVED & REPLACED SAME PER B737-800 AMM 21Dec 14, 2022 · N531AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2022092640064Battery Pack · inoperativeEMERGENCY AREA AISLE LIGHT INOP AT 18, 20 AND 23DEF. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK M1670 REF B737-800 WDM 33-51-13-8 AND B737-800 AMM 33-51-06.Sep 26, 2022 · N531AS · Boeing 737890 · Emergency LightingSDR ASAA2022091840001Actuator · leakingFUEL LEAKING UNDER ENGINE 1. GROUNDED - YES. REMOVED AND REPLACED #1 ENG L/H VSV ACTUATOR REF B737-800 AMM 75-31-01.Sep 18, 2022 · N531AS · Boeing 737890 · Compressor Bleed GovernorSDR ASAA2022091539960Spacer · debondedPER ASA T/C 78472010 #2 ENG FAN BLADE LUBE SPACERS #1, 10, AND 21 ARE DEBONDED. GROUNDED - YES. PER ASA T/C 78472010 #2 ENG FAN BLADE LUBE, REMOVED AND REPLACED SPACERS #1, 10 AND 21.Sep 15, 2022 · N531AS · Boeing 737890 · Turbine Engine Air Inlet SectionSDR ASAA2022091439983Bearing · wornL1 DOOR HANDLE STIFF. GROUNDED - YES. REPLACED CAMPLATE DUE TO ROTATING BEARING OUTER RACE REF CMM 52-16-12. REMOVED/REINSTALLED L1 DOOR REF B737-800 AMM 52-11-00. REMOVED/REINSTALLED L1 DOOR UPPER AND LOWER HINGE ARMS REF AMM 52-11-11. ADJUSTMENTS AND OPS CKSSep 14, 2022 · N531AS · Boeing 737890 · Passenger/Crew DoorsSDR ASAA2022091439952Satcom · inoperativeSAT RADIO DIALED AND RECEIVED CALLS, BUT NO AUDIO. GROUNDED - YES. ON DEFERRAL.Sep 14, 2022 · N531AS · Boeing 737890 · HF Communications SystemSDR ASAA2022091439959Bolt · wornPER ASA T/C 78472010 #2 ENG FAN BLADE LUBE FRONT SPINNER CONE SIX BOLTS ARE WORN ON THE THREADS. GROUNDED - YES. REMOVED AND REPLACED THE SIX BOLTS FOR THE FRONT SPINNER CONE ON THE #2 ENG PER ASA T/C 78472010.Sep 14, 2022 · N531AS · Boeing 737890 · Turbine Engine Air Inlet SectionSDR ASAA2022090239792None · wornF/O'S MCDU R5 AND R6 BUTTONS WORN-LIGHT SHAVER THROUGH. GROUNDED - YES. REMOVED AND REPLACED F/O'S MCDU KEYBOARD; INSTALLATION TEST IS GOOD. REF B737-800 AMM 34-61-01-000-801 AND 34-61-01-400-801.Sep 2, 2022 · N531AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2022082039562Door · out of adjustL1 DOOR WAS VERY DIFFICULT TO CLOSE. GROUNDED - YES. SERVICED L1 ENTRY DOOR REF B737-800 AMM 12-25-11.Aug 20, 2022 · N531AS · Boeing 737890 · Passenger/Crew DoorsSDR ASAA2022081739566Actuator · failedRT PACK LT ILLUMINATED ON CLIMB OUT. EXTINGUISHED UPON RECALL RESET. GROUNDED - YES. REMOVED AND REPLACED RH INLET ACTUATOR IAW B737-800 AMM 21-51-21/401. REMOVED AND REPLACED BONDING JUMPER AS REQUIRED WITH NEW FROM STOCK, CHECKS GOOD.Aug 17, 2022 · N531AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2022081639537Probe · faultedVNAV MODES ON FMC NOT POPULATING PERF DATA. GROUNDED - YES. PLACED PROBE HEAT IN AUTO VNAV INFO LOADED FMC SYSTEM BACK TO NORMAL. IAW B737-800 AMM 34-61-00-710-801.Aug 16, 2022 · N531AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2022080939431Fmc · faultedON SHORT FINAL DURING FLARE NO AIII, APCH WARN & DUAL FMC RESET AFTER TOUCHDOWN. GROUNDED - YES. PER B737-900 FIM 34-61 TASK 807 FMC CURRENT PROMPT CHECK GOOD. FMC BITE HAD FMC-L PGM FAULT. INTERMITTENT. OK FOR SERVICE.Aug 9, 2022 · N531AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2022080639387Satcom · unresponsiveSATCOM 1 + 2 NOT TRANSMITTING. CALL CONNECTS WHEN PLACED HOWEVER NO ONE CAN HEAR US. GROUNDED - YES. RELEASED PER MEL 23-18 SATCOM INOP. AUTHORIZED BY SEAMC JARED @ 0230Z. ACCOMPLISHED SATCOM SYSTEM TESTS PARA. 1. A. - F. OF B737-800 AMM 23-15-00-730-801. VERIAug 6, 2022 · N531AS · Boeing 737890 · HF Communications SystemSDR ASAA2022073139320Panel · inoperative#1 HF/SAT SWITCH WILL NOT SELECT SAT. GROUNDED - YES. REMOVED AND REPLACED HF/SAT PANEL REF B737-800 AMM TASK 23-15-00-400-804, SATCOM COMMUNICATION SYSTEM TEST, AMM TASK 23-15-00-730-801. SATCOM VOICE TEST OF HF1 AND HF2 SYSTEM TEST REF AMM 23-11-00 IS GOOD.Jul 31, 2022 · N531AS · Boeing 737890 · HF Communications SystemSDR ASAA2022070638964Spacer · debondedWHILE ACCOMPLISHING T/C 78472010 FOR NO.1 ENG FAN LUBE, FOUR SPACERS, 2,5,12,23, FOUND TO BE DEBONDED. GROUNDED - YES. REMOVED AND REPLACED 4 SPACERS ON NO.1 ENG REF T/C 78472010.Jul 6, 2022 · N531AS · Boeing 737890 · Turbine Engine Air Inlet SectionSDR ASAA2022070638963Platform · debondedWHILE ACCOMPLISHING T/C 78472010 FOR NO. 1 ENG FAN LUBE, PLATFORMS 1,4,6,8,9,10,12,13,14,16,17,18,20,22,23,24 FOUND TO BE DEBONDED (16 TOTAL). REF TSR 712592 FOR WANT OF REPLACEMENT OF PLATFORMS W/ ANY ELASTOMER DAMAGE. GROUNDED - YES. REMOVED AND REPLACED 16 Jul 6, 2022 · N531AS · Boeing 737890 · Turbine Engine Air Inlet SectionSDR ASAA2022070539078Detector · failed#2 FIRE TEST LIGHT DOES NOT ILLUMINATE ON THE "B" LOOP. GROUNDED - YES. REMOVED AND REPLACED #2 ENG UPPER FAN DETECTOR ASSY AND OPS CKS NML IAW B737-800 AMM 26-11-01.Jul 5, 2022 · N531AS · Boeing 737890 · Detection SystemSDR ASAA2022070338911Connector · dirtyON ENGINE FIRE TEST, FAULT LIGHT ILLUMINATED #2 ENGINE LOOP B INOP. GROUNDED - YES. PERFORMED B737-800 FIM 26-10 TASK 801 FAULTED ENGINE 2 LOOP B. CLEANED CONNECTOR PER FIM 26-10-810 AND RERACKED FIRE CONTROL MODULE. PERFORMED ENGINE FIRE OPS TEST PER B737-800Jul 3, 2022 · N531AS · Boeing 737890 · Detection SystemSDR ASAA2022062938909Connector · dirty#2 ENGINE FIRE HANDLE WILL NOT ILLUMINATE DURING FIRE TEST. GROUNDED - YES. PERFORMED BITE REF B737-800 FIM 26-10 TASK 801. FAULTED FOR LOOP B ON #2 ENG FOR "LOW RESISTANCE CLEAN CONNECTORS" FOLLOWED FIM 26-10 TASK 810. RE-RACKED FIRE DETECTION CONTROL MODULE Jun 29, 2022 · N531AS · Boeing 737890 · Detection SystemSDR ASAA2022061338646Modulating Valve · intermittentZONE TEMP LIGHT ILLUMINATES ON RECALL GOES OUT ON RESET TEMP CONTROL IS NORMAL. GROUNDED - YES. ACCOMPLISHED PACK/ZONE BITE TEST. FLIGHT DECK TRIM VALVE LOGGED FAULT. RESET FAULT, RAN BITE TEST TWICE. OPS CHECK NORMAL PER B737-800 AMM 21-61-00-700-806-002.Jun 13, 2022 · N531AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2022051238270Control Valve · not closedREF ASA TASKCARD NG-36WC-00001, #1 ENG PRECOOLER CONTROL VALVE WILL NOT CLOSE WITH PRESSURE APPLIED. GROUNDED - YES. REMOVED AND REPLACED #1 ENG PRECOOLER CONTROL VALVE REF B737-800 AMM 36-12-02. OPS CHECK, LEAK CHECK GOOD.May 12, 2022 · N531AS · Boeing 737890 · Pneumatic Distribution SystemSDR ASAA2022051238269Regulator · failedREF ASA TASKCARD NG-36C-00001. #1 ENG HIGH STAGE VALVE FAILED REVERSE FLOW DIAGRAGHING SHEET. GROUNDED - YES. REMOVED #1 ENG HIGH STAGE REGULATOR REF B737-800 AMM 36-11-07. INSTALLED #1 ENG HIGH STAGE REG REF AMM 36-11-07. LK AND OPS CHECK GOOD.May 12, 2022 · N531AS · Boeing 737890 · Pneumatic Distribution SystemSDR ASAA2022050738260Pneumatic System · malfunctionedDUCT PRESSURE SPLIT BETWEEN 15-20 PSI AT HIGH POWER SETTING PRESSURE SPLIT DROPS TO 5 PSI AT LOW POWER SETTING. GROUNDED - YES. RAN BOTH ENGINES AT IDLE. DUCT PRESSURE LOW ON #1 ENG. PERFORMED BLEED AIR HEALTH CHECK ON #1 ENG PER T/C NG-36WC-00001. FOUND CONTRMay 7, 2022 · N531AS · Boeing 737890 · Pneumatic Distribution SystemSDR ASAA2022050538215Filter · dirtyAFTER TAXI, CONT CABIN ZONE TEMP LIGHT CAME ON, RESET WITH RECALL. GROUNDED - YES. PERFORMED B737-800 FIM 21-62 TASK 801 ON BOTH #1 AND #2 PACK ZONE/TEMP CONTROLLERS ON #2 PACK CONTROLLER FOUND FLIGHT DECK TRIM VALVE FAULT. RESET FAULT, FAULT CLEARED, REF FIM May 5, 2022 · N531AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2022050438226Manifold · leakingAPU FAILED TO START FUEL LEAKING FROM APU DRAIN. GROUNDED - YES. REMOVED AND REPLACED PRIMARY FUEL MANIFOLD PER B737-800 AMM 49-31-16. APU OPERATIONAL CHECK GOOD PER AMM 49-11-00. NO LEAKS NOTED.May 4, 2022 · N531AS · Boeing 737890 · APU Engine Fuel and ControlSDR ASAA2022043038172Unknown · failedWHILE PERFORMING EMERGENCY BATTERY PACK CAPACITY PACK CHECK BEFORE 15 MIN MARK, FOUND MID AND AFT MAIN CABIN WALKWAY OVERHEAD EXIT SIGNS OFF, LH/RH AREA LIGHTS FROM ROW 16 AFT, LH/RH OVERWING DOOR EMERGENCY EXIT LIGHTS OFF, AND BOTH L2 AND R2 PAX DOORS EMERGENApr 30, 2022 · N531AS · Boeing 737 · Emergency LightingSDR ASAA2022043038170Unknown · brokenWHILE ACCOMPLISHING ASA TASK CARD N8420001 FOUND CORE FIRE DETECTION HARNESS MW0326 BROKEN TERMINALS. GROUNDED - YES. REMOVED AND REPLACED CORE FIRE DETECTION HARNESS MW0326 REF B737-800 AMM 26-11-02/400 OPS CHECK GOOD. NO FURTHER DAMAGE FOUND.Apr 30, 2022 · N531AS · Boeing 737 · Detection SystemSDR ASAA2022040137870Pressure Switch · faultyDURING PREFLIGHT - WITH MAIN TANK FUEL PUMP "OFF" - TANK #2 "LOW PRESSURE" LIGHT WAS OUT. GROUNDED - YES. R/R AFT BOOST PUMP PRESSURE SWITCH IAW B737-800 AMM 28-42-11 OP/LEAK CHECK GOOD.Apr 1, 2022 · N531AS · Boeing 737890 · Fuel Indicating SystemSDR ASAA2022032637784None · none#1 HF FAIL. GROUNDED - YES. ACCOMPLISHED BITE OF #1 HF REF B737-800 FIM 23-11 TASK 801 NO FAULTS OBSERVED NO FAIL DISPLAYED ON #1 HF ON RTP'S. REF FIM 23-11 TASK 802. OPS NML.Mar 26, 2022 · N531AS · Boeing 737890 · HF Communications SystemSDR ASAA2022030737645Control Panel · faultyAUTO PILOT DISENGAGED TWICE ON FLIGHT. FIRST TIME AS WE LEVELED AT FL 370 AT CRUISE. SECOND TIME ON THE DESCENT AS POWER WAS COMING UP TO CORRECT SPEED A/P DISENGAGED AND AIRCRAFT PITCH DOWN AS IT SEEMED OUT OF TRIM. GROUNDED - YES. ACCOMPLISHED DFCS BITE FAULMar 7, 2022 · N531AS · Boeing 737890 · Autopilot SystemSDR ASAA2022022737597Unknown · unknownCONT CABIN ZONE TEMP LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. BITE TESTED BOTH ZONE TEMP CONTROLLERS. ZTC 1 GOOD. ZTC 2 SHOWED FLT DECK TRIM VALVE ON BIT AND PREV FLT. SHOWED GOOD ON VERIFY. CONT CABIN ZONE TEMP LT DID NOT ILLUMINATE ON RECALL.Feb 27, 2022 · N531AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2022010237041Computer · inoperativeAUTOPILOT "B" KICKED-OFF TWO TIMES AT CRUISE FLIGHT. SWITCHED TO AUTOPILOT A AND IT WORKED FINE. GROUNDED - YES. REMOVED AND REPLACED FCC B IAW B737-800 AMM 22-11-33-000/400-801. VERIFIED CORRECT SW WAS PREVIOUSLY LOADED. BOTH FCC A+B MATCH OPS. PERFORMED DFCSJan 2, 2022 · N531AS · Boeing 737890 · Autopilot SystemSDR ASAA2021111836658Indicator · failedFUELER REPORTS CTR FUEL QTY IND FLASHES ID FAIL. GROUNDED - YES. REMOVED AND REPLACED CENTER REFUEL QUANTITY INDICATOR REF B737-800 AMM 28-41-61. 4 CB'S OPENED TAGGED TAGS REMOVED AND 4 CB'S RESET. TESTED GOOD PER REF ABOVE REF. THIS CLEARS MEL 28-12B PLACARDSNov 18, 2021 · N531AS · Boeing 737890 · Fuel Indicating SystemSDR ASAA2021111336581Unknown · unknownATTEMPTED AUTOLAND WAS UNSUCCESSFUL WITH APP ARMED AND AUTOPILOT A ENGAGED, AUTOPILOT B WOULD NOT ENGAGE. GROUNDED - YES. FOUND C/B FCC B ENGAGE INTERLOCK C/B OUT ON P6-2. RESET REF B737-800 AMM 20-60-01 AND WD 22-11-12 PG 3. C/B REMAINED SET. FCC B OPS NML RENov 13, 2021 · N531AS · Boeing 737890 · Autopilot SystemSDR ASAA2021102836453Unknown · unknownFWD GALLEY R1 EMERGENCY EXIT LIGHT COVER PLATE NEEDS TO BE REATTACHED. GROUNDED - YES. REATTACHED R1 EMERGENCY EXIT LIGHT COVER PER B737-800 AMM 33-51-01-960-802. NO DEFECTS NOTED MC SEA DAVE NOTIFIED.Oct 28, 2021 · N531AS · Boeing 737890 · Emergency LightingSDR ASAA2021102836447Unknown · unknownAUTO PILOT 'A' DISCONNECTED 3 TIMES AT CRUISE, SELECTED AUTO PILOT 'B' WITH NO ISSUES. GROUNDED - YES. (RESOLVED ON W/O: 1889138 TASKCARD: N/R-00001 ) RESET SYSTEM AND RAN RTS TEST PER B737-800 AMM 22-11-00/201, OPS CHECK GOOD. NO TRAX HISTORY LAST 30 DAYS. AIOct 28, 2021 · N531AS · Boeing 737890 · Autopilot SystemSDR ASAA2021101836347Unknown · unknownCAPT FMC FAIL LT ILLUMINATED WITH SCREEN BLANK. " BIT PASS" WAS OBSCURED ON SCREEN- IN ABOUT 20-30 SEC. FMC CAME BACK ON WITH NO LOSS OF DATA. GROUNDED - YES. PERFORMED B737-800 FIM 34-61 TASK 836, CYCLED FMCS C/B NO DEFECTS NOTED.Oct 18, 2021 · N531AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2021092936114Magnetic Plug · unknownREF TASK CARD N2480000 # 1 ENG STARTER MAGNETIC CHIP DETECTOR STUCK WONT SEPARATE FROM HOUSING. GROUNDED - YES. REMOVED AND REPLACED MAGNETIC PLUG REF B737-800 AMM 80-11-01-360-801-F00 LEAK CK GOOD.Sep 29, 2021 · N531AS · Boeing 737890 · Engine CrankingSDR ASAA2021092936113Unknown · unknownPWS FAIL ON BOTH ND'S. GROUNDED - YES. RESET WEATHER RADAR PWR. PERFORMED WEATHER RADAR BITE. REF B737-800 FIM 34-43 TASK 815/FIM 34-43 TASK 801. BITE TEST PASSED, ALL FAIL MESSAGES CLEARED.Sep 29, 2021 · N531AS · Boeing 737890 · Independent Position Determining SystemSDR ASAA2021092336077Computer · faultyRT FMC FAIL IN CRUISE @ 2HRS. INTO FLIGHT. FL380 VTK/MAP SINGLE FMC OP. FMC SOURCE SELECT SWITCH BOTH ON L. FMC- R BEARING INFO ON POS SHFT PAGE NOT DISPLAYED. SINGLE FMC OPERATION. GROUNDED - YES. REVERSED MEL PROCEDURE AND PLACED FMC TO NORMAL. PERFORMED B73Sep 23, 2021 · N531AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2021092336076Unknown · unknownRIGHT FMC FAILED IN CRUISE. GROUNDED - YES. RESET FMC IAW B737-800 FIM 34-61 TASK 836. OPS CHECK OK.Sep 23, 2021 · N531AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2021092236078Unknown · unknownF/A REPORTS THAT L1 DOOR VERY HARD TO OPEN. GROUNDED - YES. ACCOMPLISHED OPS CHECK L1 DOOR IAW B737-800 AMM 52-11-00 OPS CHECK GOOD.Sep 22, 2021 · N531AS · Boeing 737890 · Passenger/Crew DoorsSDR ASAA2021091936010Computer · noneSINGLE FMC OPERATION APPEARED IN FMC SCRATCH PAD AND VTK AND MAP SHOWN ON FO ND. RAN QRH - DID NOT RESTORE RIGHT FO'S FMC OCCURRED ABOUT 2 HOURS INTO FLIGHT. GROUNDED - YES. RT FMC FLT HISTORY SHOWS HARDWARE FAILURE CODES ARINC & ASIC, BOTH FAULT CODES OCCUREDSep 19, 2021 · N531AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2021082435775Spacer · peelingWHILE PERFORMING T/C 78472010 CFM 56-7 FAN BLADE LUBE, FOUND RUBBER DAMPENERS ON SPACER 1, 3 & 4 PEELING OFF. GROUNDED - YES. REPLACED SPACERS 1, 3 & 4, #1 ENGINE PER T/C 78472010.Aug 24, 2021 · N531AS · Boeing 737890 · Turbine Engine Air Inlet SectionSDR ASAA2021082435774Platform · peelingWHILE PERFORMING T/C 78472010 CFM56-7 FAN BLADE LUBE, FOUND RUBBER SEALS ON PLATFORMS 3,7 & 21 PEELING OFF. GROUNDED - YES. REPLACED PLATFORMS 3, 7 & 21 , #1 ENGINE PER T/C 78472010.Aug 24, 2021 · N531AS · Boeing 737890 · Turbine Engine Air Inlet SectionSDR ASAA2021082235768Autopilot Sys · disconnectedDURING CRUISE AT FL350. AUTOPILOT B DISENGAGED FOR NO APPARENT REASON. CONDITIONS=SMOOTH WIND 292/16 SAT =42. GROUNDED - YES. REL PER MEL 22-1F B SYSTEM AUTOPILOT INOP. MEL 22-99B CAT 111 AUTOLAND N/A SEAMC NOTIFIED DARREN. DFCS BITE CK SHOWS 22-11607 MCP DATAug 22, 2021 · N531AS · Boeing 737890 · Autopilot System
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