737 MAX
Incident Reports

U.S. based airlines are required to submit safety reports called Service Difficulty Reports (SDRs) for malfunctions involving aircraft systems in accordance with U.S. law. The Federal Aviation Administration (FAA) is required by Department of Transportation policy to investigate these incidents to determine root causes and to ensure corrective action is taken by aircraft manufacturers and airlines to fix the problem(s). These reports are crucial for maintaining and improving aviation safety, as they help to identify potential hazards, evaluate risks, and implement corrective measures to prevent future tragedies.

The foundation believes it is important to highlight select reports involving 737 MAX airplanes. We find the reports listed below concerning because of the history of the MAX and the repetitive and/or serious nature of the reports.

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ASAA2023080844500

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AFTER LANDING, DURING ROLLOUT, BEFORE FLAPS RETRACTED UP, MAINTENANCE LIGHT ILLUMINATED. GROUNDED - YES. COMPLIED BOTH FAULT INTERROGATION FOR MX MSG, FOUND NON ACTIVE FAULT MSG 77-43023. RESET LATCHED FAULT PER AMM 31-65-00. MX LIGHT EXTINGUISHED. SEAMC MARK NOTIFIED. (TSAR174M).

ASAA2023080844498

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USING HF#1, THE HF ANTENNA WAS UNABLE TO TUNE ON MULTIPLE HF FREQUENCIES. (HF #2 WORKS NORMAL). A STEADY TONE LASTING APPROXIMATELY 10 SECONDS WOULD PRECEED OUR INABILITY TO TRANSMIT.(NO SIDE TONE) AT 3 HOURS INTO FLIGHT. WE ATTEMPTED HF#1 AGAIN AND IT WORKED NORMALLY. GROUNDED - YES. PERFORMED OP CHECK ON HF#1 IAW AMM 23-11-00. OP CHECK GOOD.

ASAA2023080744475

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AUTO FAIL AND ALTN LIGHTS ILLUMINATED DURING FLIGHT AT FL400 APPROX 40 MIN INTO FLIGHT - NON ETOPS VERIFICATION NOT SUCCESSFUL. GROUNDED - YES. REMOVED AND REPLACED AFT OUTFLOW VALVE ASSEMBLY IAW B737-9MAX-AMM 21-31-03-000-801 & 21-31-03-400-801 OPS CHECKS GOOD.

ASAA2023080744484

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WITH APU PRESSURIZING PACKS, DUCT PRESSURE FLUCTUATES FROM 10 TO 35 PSI. GROUNDED - YES. ACCOMPLISHED ENG NORMAL START REF AMM 71-00-00 WITH APU BLEED AIR WITH NO FLUCTUATION NOTED APU OPS NORMAL THIS CLEAR MEL 49-52-01B SEA MOC NOTIFIED PLACARDS REMOVED.

ASAA2023080744469

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WHILE ACCOMPLISHING T/C 05-020-01 DISCOVERED SMT MESSAGE ENG 2 EEC C2. GROUNDED - YES. ON DEFERRAL.

ASAA2023080744468

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WHILE ACCOMPLISHING T/C 05-020-01 DISCOVERED SMT MESSAGE ENG 2 EEC C1. GROUNDED - YES. ON DEFERRAL.

ASAA2023080744464

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MAINT LIGHT LANDING ROLL OUT. GROUNDED - YES. PERFORMED IFIM TASK 36-12-00-810-801, BLEED FAMVL FAUL ON OMFS. FLIGHT CREW PERFORMED ENGINE ON PNEUMATIC SYSTEM TEST ASSOCIATED MX MESSAGE CLEARED. OPS CHECK GOOD. MAINT LIGHT EXTINGUISHED. NO FURTHER DEFECTS NOTED. IAW AMM 36-00-00-730-801 SEAMC ARNIE NOTIFIED.

ASAA2023080744455

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WHEN COMPLETING T/C 05-020-01, FOUND PRESENT LEG FAULT "ENG 2 EE C1". GROUNDED - YES. FOUND MAINT MSG 73-43855. PERFORMED IFIM TASK G73-22-00-810-830. OMF SHOWS FAULT NOT ACTIVE AT THIS TIME, FAULT CORRECTED.

ASAA2023080644446

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R VALVE WING ANTI ICE DOES NOT ACTIVATE TO COMMANDED POSITION. GROUNDED - YES. ACCOMPLISHED WING THERMAL ANTI ICE VALVE OPS TEST W / APU BLEED AIR, ACCOMPLISHED TEST THREE TIMES AND "R" VALVE WING ANTI ICE OPERATED NORMALLY ALL THREE TIMES, NO DEFFECTS NOTED, A/C CHECKS GOOD FOR SERVICE, NO HISTORY 30 DAYS, REF 30-11-11-710-801.

CALA2023080902466

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T/O CONFIG LITE ON T/O ROLL IN LOW SPEED REGIME. TRAILING EDGE FLAP ASYMMETRIC. BITE CHECKED FSEU, FAULT MESSAGE: 27-53254,FLAP 5 SKEW SENSOR. FOUND VALUES OUT OF LIMIT FLAPS UP READ -88.0 CKD WIRING REF WDM 27-53-21 PWR AT PIN 2 AND GOOD GRD PIN 1. NEEDS #5 SKEW SENSOR T529. NSU CLE. REMOVED AND REPLACED # 5 SKEW SENSOR.AS PER AMM 27-59-01-730-801. SKEW SENSOR OPS CHECK GOOD. NO FAULTS NOTED, OK TO CONTINUE.. ADD FAULT:27-53254 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1153261 SN OFF 0432 IPC REFERENCE # SENSOR, FLAP S OFF 29-2759-9-0003 6412 ON 29-2759-9-0003 0432

ASAA2023080644462

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AFTER CROSSING EEP CAPT FMC FAILED. GROUNDED - YES. ACCOMPISHED FMC RESET PROCEDURE PER AMM. REF 34-61-00-710-801.BOTH FMC'S OPS CHECK NORMAL A/C OKAY FOR SERVICESEAMC: MARK NOTIFIED.

ASAA2023080644463

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TECH SERVICES REQUEST FOR FOLLOW-UP TO MTX LIGHT & FAULT (#1 LEFT FAMV FAULT 36-12020 #1(LH) FAMV IS NOT IN COMMANDED POSITION)----(#PRI1)----ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. (RESOLVED ON W/O: 1964234 TASKCARD: N/R-00001 ) REMOVE AND REPLACED FAN AIR MODULATING VALVE REF AMM 36-12-03. PNEUMATIC ENGINE ON SYSTEM TEST REF AMM 36-00-00. ACCOMPLISHED ENGINE RUN IN REF AMM 71-00-00. NO FAULTS NOTED OP'S CHECK GOOD. DBAXTER201723. THIS CLEARS TSR714788. SEAMC SCOTT NOTIFIED. TECH SERVICES DWAYNE NOTIFIED BECAUSE S/N OF REMOVED PART DIDNT MATCH. GOT OK TO CHANGE THE PART.

ASAA2023080644432

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WHILE PERFORMING TASKCARD 72-ASA-04 FOUND LARGE AMOUNTS OF HPT1 SHROUD COATING MISSING. BASE MATERIAL IS PRESENT. GROUNDED - YES. ON DEFERRAL.

ASAA2023080644433

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DURING T/C 31-005-00 FOUND SCHEDULED MAINT TASK BLEED FAMV RVDT R. GROUNDED - YES. (RESOLVED ON W/O: 1964519 TASKCARD: N/R-00003 ) FOUND MX MSG: 36-12031 ENGINE-2 FAMV RVDT SIGNAL IS OUT OF RANGE. ACCOMPLISHED IFIM TASK 36-12-00-810-804 B. (1). ELECTRICAL LRU - REPLACEMENT TESTE REF AMM 36-00-00-710-810. TEST PASS. SMT BLEED FAMV RVDT R NO LONGER ACTIVE. PLT CLEARED. SEAMC TODD NOTIFIED.

ASAA2023080544410

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WINDOW OVERHEAT RIGHT SIDE GROUNDED - YES. FOLLOWED QRH DID NOT REMAIN ILLUMINATED.

ASAA2023080544436

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RT ENG BLEED CAUTION LT ILLUMINATED SOON AFTER TOP OF DESCENT @ APPROX FL290 AT THRUST IDLE. COMPLETED QRH PROCEDURES AND LIGHT REMAINED ON. GROUNDED - YES. STATUS MSG "BLEED PRSOV R" WITH MTX MSGS 36-00171 AND 36-11041. BLEED TRIP RESET. ELECTRICAL LRU - GROUND TEST PER AMM 36-00-00-710-801 "FAILED" ON MULTIPLE ATTEMPTS. REMOVED AND REPLACED RIGHT ENGINE PRSOV REF AMM 36-11-04. OPS + LEAK CHECK GOOD. BLEED LIGHT AND STATUS MESSAGE CLEARED. FAN COWLS AND T/RS OPENED AND CLOSED REF AMM TASK 71-11-04 AND 78-31-00. ETOPS GROUND VERIFICATION SUCCESSFUL.

ASAA2023080544523

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TECHNICAL SERVICES REQUEST APU FAULT REVIEW----(#PRI2/ETOPS)----. GROUNDED - YES. 49 FAULT HISTORY: FAULT 49-41255, START POWER UNIT SHOWS HIGH TEMP DETECTED BY APU CONTROLLER. ON LEGS 1 THROUGH 12. PER B737-9 FIM 49-40-00-810-819. REMOVED AND REPLACED APU START POWER UNIT REF B737-9 AMM 49-41-71/401. ALL OP TESTS PASS. FAULT CODE 49-41255 DOES NOT SHOW IN EXISTING FAULTS. ETOPS GROUND VERIFICATION SUCCESSFUL.

ASAA2023080544444

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TEMP PROBE LIGHT ILLUMINATED. GROUNDED - YES. REPLACED TAT PROBE IAW AMM 34-21-06. OPS TEST GOOD. ALL PROBES HEAT AND LIGHT IS NO LONGER ILLUMINATED.

ASAA2023080544482

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PWS & WXR FAILED DURING FLIGHT. GROUNDED - YES. PERFORMED WEATHER RADAR OPERATIONAL TEST AND WEATHER RADAR SYSTEM TEST ALL SYSTEMS CHECKED GOOD IAW B737-9 AMM 34-41-00-710-801, 34-41-00-730-801.

ASAA2023080544417

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SPEED TRIM FAIL LIGHT ON RECALL. GROUNDED - YES. REF. IFIM 22-11-810-D73 PERFORMED AUTOTEST. PASSED SPEED TRIM FAIL LIGHT EXTINGUISHED OPS TEST GOOD.

ASAA2023080544424

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DURING WORK ON T/C 31-005-00 FOUND SMT ENG 1 C1 MAINTENANCE MSG 73-438501 ENGINE FAN INLET (T12) TEMPERATURE SENSOR AND CALCULATED ADIRU TEMPERATURE SIGNALS DO NOT AGREE. GROUNDED - YES. TROUBLESHOT IAW FIM TASK G73-21-00-810-937. PERFORMED INITIAL EVALUATION, OMF SHOWED NO MESSAGE IN EXISTING FAULTS. STEP B, (7) STATES THERE WAS AN INTERMITTENT FAULT. NO DEFECTS NOTED.

ASAA2023080444447

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CA PITOT LT ILLUMINATED ON TAXI. GROUNDED - YES. SELECTED PITOT HEAT A+B TO ON FOR 30 MINUTES, "CAPT PITOT" LIGHT DID NOT COME ON. ALL PROBES HEATED NORMALLY. REF IFIM TASK 30-31-00-810-801, THIS WAS AN INTERMITTENT FAULT. AS A PRECAUTIONARY MEASURE, CYCLED CB C1 ON P18-3 AND INSPECTED BEHIND BREAKER REF AMM 20-60-01, NO DEFECTS NOTED.

ASAA2023080444425

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ENG 2 EEC C1 FAULT. GROUNDED - YES. ON DEFERRAL.

ASAA2023080444466

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APU ON START AFTER LANDING RAN QRH-OFF FOR MINUTES RESTART SUCCESSFULL. GROUNDED - YES. ON DEFERRAL.

ASAA2023080444422

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AMBER MAINT LIGHT ON OVERHEAD PANEL DOING PREFLIGHT. GROUNDED - YES. FOUND BOTH EEC FOR ENGINE 1 AND 2 IN TEST MODE FOLLOWED IFIM G77-00-00810-941, AND TASK G73-20-00-810-936. SET BOTH EECS TO NORM, CLEARED LATCHED FAULS, OPS CHECK GOOD.

ASAA2023080444434

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APU LOW PRESSURE LIGHT ILLUMINATED. SUCCESSFUL START ON SECOND ATTEMPT AT GATE. GROUNDED - YES. PER LP 60721533, MEL 49-99A (ETOPS) APU ON DEMAND PROGRAM, APU CONTINUOUS OPERATION (ETOPS) AND C/N 31035942. CSS SUCCESSFUL PER MCC. MX NOTED.

ASAA2023080444439

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FMC DISAGREE ON BOTH NAV DISPLAY. GROUNDED - YES. RECYCLED C/B'S FOR FMC'S PER IFIM 34-61-00-810-924; RESETED TO NORMAL. PERFORMED FMC OPERATIONAL TEST NORMAL. REF AMM 34-61-00-710-801.

ASAA2023080444443

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CAPT LEFT FMC FAILURE, ACCOMPLISHED FMC FAIL CHECKLIST, NO VTK ONLY MAP. GROUNDED - YES. PERFORMED IFIM TASK 34-61-00-810-846, INTERMITANT FAULT, OPS CHECK NORMAL.

CALA2023080702445

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BURNING PLASTIC SMELL WITHOUT SMOKE IN FIRST CLASS CABIN AFTER ENGINE START AND DURING TAXI MILLER, JABRIL (V939519) FOUND THE IN SEAT POWER BOX UNDER SEAT 3EF TO BE THE SOURCE OF THE SMELL. DISCONNECTED AND ISOLATED IAW NEF 2300B REMOVED AND STOWED CONNECTORS. PLACING SEATS 3EF AND 4EF IN SEAT POWER OUTLETS ON DEFERRAL. NOC DESK: MAX NAME: KG DATE: 03-AUG-23- DEFERRED DIRECTLY BY TOMC UPDATED MAA CODE FIX USING VENDOR MAA SCREEN MAC METER INITIATED FOR WITH VENDOR ID V939519 MARKED ITEM AS AN SDR ITEM PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. MAC RELATED WORK ORDER 000000003082278 AND PRTR MILLER, JABRIL (V939519) FOUND THE IN SEAT POWER BOX UNDER SEAT 3EF TO BE THE SOURCE OF THE SMELL. DISCONNECTED AND ISOLATED IAW NEF 2300B REMOVED AND STOWED CONNECTORS. PLACING SEATS 3EF AND 4EF IN SEAT POWER OUTLETS ON DEFERRAL. INSPECTED CONNECTORS NO DEFECTS NOTED. R/R HPSEB IAW B737MAX 44-21-00. SDU OPERATIONAL, PLAYS MOVIES AND SAFETY DEMO. PN: RD-FA3871-01 SN OFF: J241442 SN ON : J811900

ASAA2023080344397

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DURING "OVHT/FIRE" WARNING TEST NO. 1 LIGHT DOES NOT ILLUMINATE. GROUNDED - YES. ON DEFERRAL.

ASAA2023080344400

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PILOT REPORTS APU WONT START. GROUNDED - YES. (RESOLVED ON W/O: 1960966 TASKCARD: N/R-00004 ) FOLLOWING THE IFIM GVI OF START / GEN UNIT = OK, CONTINUITY CHECK OF WIRING BETWEEN SCU AND START / GEN = NFF, REPLACED SCU WITH SERVICABLE UNIT, OPS CHECKS FAIL = ORIGINAL FC 49-41254 STILL ACTIVE. REF IFIM 49-40-00-810-818 & AMM 49-41-61. NEXT ITEM TO REPLACE IS START / GENERATOR UNIT. JASHBECK, 23714, 08/04/2023.REMOVED AND REPLACED STARTER - GENERATOR REF. AMM 49-41-21. OPS & LEAK CK GOO. ETOPS PN VERIFICATION BY SEAMC JOE. MEL 49-11-01 CLEARED. SEAMC DARREN NOTIFIED.

ASAA2023080344398

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FMC DISAGREE LT ON BOTH PFD'S. GROUNDED - YES. FMC DISAGREE NO LONGER PRESENT, FMC OPS NORMAL REF IFIM 34-61-00-810-918, NO HISTORY PAST 30 DAYS.

ASAA2023080344440

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RADAR DOES NOT DISPLAY WX IN AUTO OR MANUAL MODE. GROUNDED - YES. WEATHER RADAR OPERATIONAL TEST PASSES, SYSTEM TEST FAILS - NO WEATHER OR GROUND RETURN. REFERENCE W/D 34-41-11-2, SHEET 1 - CONNECTORS D16712, D39977, AND D1409 REMOVED, INSPECTED AND RE-SEATED. WX RADAR OPS NORMAL INCLUDING SYSTEM TEST PER AMM TASK 34-41-00-730-801. RADOME OPED AND CLOSED REF AMM 53-52-00-101-410-801. WEATHER RADAR R/T CIRCUIT BREAKER PULLED AND RESET - MIG 51A TAG S/N 105261.

ASAA2023080344570

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VERIFICATION OF APU LEAK. GROUNDED - YES. REMOVED AND REPLACED APU PER ASA T/C 49-ASA-02 AND T/C 49-ASA-03. THIS CLOSES TSR 714736 SEA MC JEREMY NOTIFIED.

ASAA2023080244376

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WHILE ACCOMPLISHING T/C 31-005-00, FOUND SMT MSG "BLEED FAMV RVDT L". GROUNDED - YES. ON DEFERRAL.

ASAA2023080244375

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WARN LIGHT (BAT) CIRCUIT BREAKER ON PANEL 18-1 FOUND POPPED DURING PREFLIGHT. GROUNDED - YES. RESET C/B PER AMM 20-60-01-860-802 C/B REMAINS SET. PERFORMED OPS TEST OF DPCS PER AMM 22-11-33-400-801 TEST PASSED. C/B REMAINS SET. REF L/P 60015433 FOR CAT DOWNGRADE

ASAA2023080244368

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DURING T/C 31-005-00FOUND BLEED FAMV RVDT R FAULT. GROUNDED - YES. COMPLETED T/C 31-005-00, NO FAULTS PRESENT REFER TO LP 60842612 FOR RESOLUTION.

ASAA2023080244370

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PRIMARY PRESSURIZATION CONTROLLER FAILED(USED ALTN TO PHX). GROUNDED - YES. RESET 1 CPC CB REF 20-60-01, PERFORMEDBITE OF #1 & 2 CPC, NO FAULTS,SYS OKAY REF AMM 21-31-00-740-801OKAY FOR SVC, NO HISTORY 90 DAYS.

ASAA2023080144377

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WHILE PERFORMING T/C 31-005-00 AND T/C 05-020-01 FOUND LATCHED MESSAGE BLEED FAMV RVDT L ON ENG. 1. GROUNDED - YES. ON DEFERRAL.

ASAA2023080144348

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FMC DISAGREE MESSAGE DISPLAYED ON POWER-UP. GROUNDED - YES. PERFORMED IFIM 34-61-00-810-918, FMC'S RETURNED TO NORMAL, OK FOR SERVICE, SEAMC JOEY CONSULTED.

ASAA2023080144420

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FOLLOW-UP TO #2 IDG FREQUENT SERVICING. (#PRI2/ETOPS). GROUNDED - YES. (RESOLVED ON W/O: 1964100 TASKCARD: N/R-00001 ) PER AMM 24-11-00-700-801 ENG#2 IDG STATIC LEAK CHECK ACCOMPLISHED. AIR/OIL COOLER CHECKED, NO SYSTEM LEAKS OBSERVED. R/R IDG VENT VALVE AND SERVICE COUPLING PER REF 24-11-00. ENG#2 IDLE RUN ACCOMPLISHED SUCCESSFULLY. NO FAULTS FOUND. A/C OK FOR SERVICE. SEAMC ASHRAF NOTIFIED.

ASAA2023080144345

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UNABLE TO ESTABLISH COMMUNICATION ON HF2 RADIO. COULD NOT TRANSMITA NOR RECEIVE AUDIO. GROUNDED - YES. ON DEFERRAL.

ASAA2023080144352

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WHILE ACCOMPLISHING T/C 05-020-01, FOUND "ENG 1 EEC C2" FAULT ON SCHEDULED MAINTENANCE TASK MESSAGES PAGE. GROUNDED - YES. PERFORMED IFIM TASK G73-10-00-810-803. ERASED FAULT MESSAGE. PERFORMED ENG IDLE SYSTEM TEST REF AMM G71-00-00-700-808-G00. FAULT DID NOT RETURN.

ASAA2023080144367

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AFT GALLEY HAS A PIZZA OVEN OR MAYBE A CAMP FIRE SMELL STARTED ON THE GROUND W/ APU ON ALL OVENS AND COFFEE MAKERS ARE OFF. TURNED CAB/UTIL AND IFE/PASS SEAT SWITCHES OFF AS WELL AS EQUIP COOLING TO ALTN. SMELL STILL PERSIST. PULLED CBS ON BACK FA PANEL AND STILL HAD SMELL OF FIRE. TURNED A/C COMPLETELY OFF TO BLUE LIGHT NO BATT OR EXT POWER SMELL DISSIPATED/WENT AWAY. GROUNDED - YES. ON DEFERRAL.

ASAA2023073144351

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APU FAULT LT ILLUMINATED AFTER 2 START ATTEMPTS. APU WOULD NOT START. GROUNDED - YES. ON DEFERRAL.

ASAA2023073144349

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NO.1 FMC FAILED IN FLIGHT FOLLOWED BY FMC RESTART. GROUNDED - YES. FAULT MESSAGE 34-69001 IN FAULT HISTORY. NOT LATCHED. CYCLED CB'S FOR FMC #1 & #2 REF FIM 34-61-00. OK FOR SERVICE.

ASAA2023073144403

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WHILE PERFORMING T/C 31-005-00, FOUND ENG 2 EEC C1 MESSAGE WITH ASSOCIATED MAINTENANCE MESSAGE 73-43303 AND 73-43293. " COMPRESSOR DISCHARGE PRESSURE (PS3) SENSOR CHANNEL-A CHANNEL-B SIGNALS DO NOT AGREE. GROUNDED - YES. ON DEFERRAL.

ASAA2023073144331

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#2 ENGINE NO LIGHT OFF, NO FUEL FLOW OBSERVED. GROUNDED - YES. (RESOLVED ON W/O: 1960968 TASKCARD: N/R-00001 ) REMOVED AND REPLACED LH IGN PLUG REF AMM 74-21-02, REMOVED AND REPLACED LH IGN LEAD REF AMM 74-21-01, REMOVED AND REPLACED LH IGN EXCITER REF AMM 74-11-01. OPS CHK GOOD. ENG RUN GOOD REF AMM 71-00-00. THIS CLEARS MEL 74-00-01A. ALL PLACARDS REMOVED SEAMC LAMONT NOTIFIED.

ASAA2023073144329

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APU FAILED TO START AFTER 3 ATTEMPTS. GROUNDED - YES. APU BITE REVIEW RESULTED IN FIVE HITS OF FAULT 49-41012, NO ROTATION SHUTDOWN DURING THIS LEG. DUE TO SIMILAR HISTORY SUGGEST REPLACING THE APU STARTER/ GENERATOR. 53815. REMOVED AND REPLACED STARTER GENERATOR REF AMM 49-41-21. OPS CHECK GOOD.

ASAA2023073144350

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WHILE ACCOMPLISHING T/C 31-005-00, FOUND "BLEED FAVM RVDT L" ON SCHEDULED MAINTENANCE TASK MESSAGE PAGE. GROUNDED - YES. ON DEFERRAL.

ASAA2023073044304

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AFTER LANDING WINDOW HEAT OVERHEAT: LEFT SIDE AND RIGHT FRONT. GROUNDED - YES. PERFORMED BITE TEST ON WHCU BITE TEST GOOD. NO FAULT NOTED THIS TIME. REF B737-9 AMM 30-41-11. A/C GOOD FOR SVS.

ASAA2023073044309

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BLEED FAMV RVDT (L) FOUND DURING T/C 31-005-00. GROUNDED - YES. ON DEFERRAL.

ASAA2023073044313

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APU FAILS TO ROTATE / TURN ON MULTIPLE ATTEMPTS MADE AMBER LIGHT TURN ON. GROUNDED - YES. RAN FIM 49-41012, CONSEQUENTLY RUNNING BITE PROCEDURE TASK/AMM 49-61-00. MAIN. MSG CLEARED. FAULT PROVES TO BE INTERMITTENT. SEAMC LANCE NOTIFIED. THIS CLEARS MEL 49-11-01. APU PLACED ON DEMAND MEL 49-99A ON LP 60721533.

ASAA2023073044330

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GE CNR 20230730051 ENG 1 S/N 60A529 IS GENERATING ALERTS FOR PS3 OUT OF RANGE, PS3 DISAGREE FAULTS OR P3B PRESSURE DISAGREE FAULTS . ICE/WATER BLOCAGE IS SUSPECT AND PSS BLOWOUT REQUIRED. (#PRI1/ETOPS). GROUNDED - YES. (RESOLVED ON W/O: 1963326 TASKCARD: N/R-00002 ) CW T/C TSR. T/C 73-ASA-01 COMPLETE. ENG 1 FAULT HISTORY: MSG 77-09002 ENG 1 EEC CH B HAS INTERNAL FAULTMSG 73-43302 COMPRESSOR DISCHARGE PRESSURE (PS3) SENSOR IS OUT OF RANGEMSG 78-44341 TR LEFT SLEEVE POSITION SENSOR SIGNAL IS OUT OF RANGEMSG 78-44461 TR RIGHT SLEEVE POSITION SENSOR SIGNAL IS OUT OF RANGEAMM TEST NO. 35 AND 36 COMPLETE.SEAMC MITCH NOTIFIED.

ASAA2023073044325

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CAPTAIN SIDE LEFT FWD WINDOW HEAT SHOWS OVERHEAT. GROUNDED - YES. C/W WHCU BITE TEST REF. AMM 30-41-11, FOUND P5-9 FAULT LIGHT ILLUMINATEDSEAMC DOUG NOTIFIED NON ASA # 6PMR677B R&R WINDOW/PITOT HEAT MODULE P5-9 IAW AMM 30-00-02 OP CHECK GOOD PERFORMED PITOT PROBE, AOA SENSOR & TAT PROBE HEATER SYS TEST IAW 30-31-00. SYS TEST PASSED. SEAMC PETERS NOTIFIED NON ASA # 6PMR677B.

ASAA2023073044324

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ON CLIMB OUT #1 ENGINE SPAR VALVE CLOSED LIGHT ILLUMINATED BRIGHT BLUE FOR ABOUT 10 MINUTES, THEN THE LIGHT WENT OUT ON IT'S OWN. GROUNDED - YES. #1 ENG SPAR VALVE INDICATION TEST OK. REF. MM 28-22-00-710-801 OPENED & CLOSED 3 C/B'S. VERIFIED VALVE OPERATES SMOOTH & LT'S COME ON & OFF QUICKLY. NO HISTORY 90 DAYS. ETOPS GND VERIFICATION COMPLETE SEAMC ETOPS AUSTIN NOTIFIED.

ASAA2023072944314

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ON TAXI TO GATE APU FAULT LIGHT ILLUMINATED WHEN ATTEMPTING TO START APU. GROUNDED - YES. UPON ARRIVING, PERFORMED APU BITE CHECK REF B737-9 AMM 49-61-00. FOUND FAULT CODE 49-41181. PERFORMED B737-9 IFIM TASK 49-40-00-810-808 UP TO STEP C.4(A)(5). FAULT 49-41181 NOT ACTIVE. STARTED APU 3 TIMES WITH NO ISSUES.

ASAA2023072944310

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WHILE PERFORMING TC 31-005-00 FOUND SMT "BLEED FAMV RVDT R" ACTIVE. MAINTENANCE MESSAGE 36-12031 ENGINE 2 FAMV RVDT SIGNAL IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.

ASAA2023072944308

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USING RSV FUEL MESSAGE. GROUNDED - YES. NO WIND SPD ON FLT PLAN. REBOOTED 1 & 2 FMC COMPUTERS. WIND SPD LOADED AND USING RSV FUEL MESSAGE CLEARED.

ASAA2023072944300

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CROSSFEED VALVE CHECK FAILED. CROSSFEED VALVE OPEN REMAINS BRIGHT BLUE. GROUNDED - YES. TROUBLE SHOT PER B737-9 IFIM 28-22-00 VALVE OPEN LIGHT OPERATES CORRECTLY INTERMITTENT FAULT.

CALA2023073102386

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AT 340HARD VIBRATION AND STRANGE SOUNDS. ON RETUR AT 4000SMELLED BURNING RUBBER MINOR VIBRATION ONLY WHEN AIR COMPRESSOR TURNED ON TO PRESSURIZE POTABLE WATER SYSTEM. COMPARED THAT SITUATION TO ANOTHER 737MAX 7257 AND DID NOT FIND IT UNUSUAL. FOUND BAGGAGE SHIFTED IN AFT CARGO. ALL VERY LARGE BAGS. OPERATED LT/RT RECIRC FANS, LT/RT PACKS AND LT/RT HYDRAULIC PRECAUTIONARY R/R L/H RECIRCULATION FAN REF AMM SYSTEMS. CYCLED ALL FLIGHT CONTROL SURFACES THROUGH FULL MOTION. 21-25-02-000-801. OPS CHECK GOOD NO LEAKS NOTED AT THIS TIME. DID NOT FEEL OR HEAR ANY OBVIOUS VIBRATIONS OR SMELL ANYTHING PARTS USED: 29-2125-9-0001,QTY :1 1660426,QTY :1 BURNING. CYCLED THE CHILLER ON/OFF IN AFT GALLEY AND DID NOTICE ADD EMP:U355299. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1660426 SN OFF 6743 IPC REFERENCE # 21-25-02-08 UNABLE TO DUPLICATE - FAN REPLACEMENT LEFT SIDE AFTER CREW REPORTED BURNING RUBBER SMELL OUT GASPER THIS LOG CLOSED FOR FURTHER EVALUATION

ASAA2023072844293

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CPDLC SLOW TO SEND RECEIVE MESSAGE. CHECKED SATCOM AND FOUND BITE FAIL ON SAT-PHONE PAGE 2/2. PULLED CIRCUIT BREAKER PER QRH CHECKLIST. GROUNDED - YES. RESET SATCOM SDU CIRCUIT BREAKER AND PERFORMED SATCOM BITE PER B737-9 AMM 23-15-00 BITE SHOWS PASS AC OK FOR SERVICE.

ASAA2023072844316

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WHILE ACCOMPLISHING TC 05-020-01 DISCOVERED MESSAGE ENG. 2 EEC C2 ON SMT MESSAGES. GROUNDED - YES. ON DEFERRAL.

ASAA2023072844306

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WHILE ACCOMPLISHING T/C 31-005-00 FOUND SMT FAULT "PACK CONTROL CHANNEL R". GROUNDED - YES. ON DEFERRAL.

ASAA2023072744302

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L FWD WINDOW OVERHEAT LT ILLUMINATED ON TAXI OUT IN SEA QRH ACCOMPLISHED. GROUNDED - YES. ACCOMPLISHED WINDOW HEAT SYSTEM OPERATIONAL TEST PER B737-9 AMM 30-41-00-710-801. NO DEFECTS NOTED.

ASAA2023072744282

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ON PDC FOUND MAINT. LIGHT ILLUMINATED AND BLEED FAMV R FAULT MSG ON STATUS PAGE. GROUNDED - YES. REMOVED AND REPLACED FAN AIR MODULATION VALVE REF AMM 36-12-03/401. ELECTRICAL LRU - REPLACEMENT TEST PASS, PNEUMATIC ENGINE ON -SYSTEM TEST PASS. CLEARED MAIN LIGHT AND LATCHED MESSAGE. OPS CK GOOD. SEAMC PETER NOTIFIED. (REF TSR714700)

ASAA2023072744312

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AFTER LANDING APU FAILED TO START AND APU FAULT LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED APU BITE PROCEDURES, FOUND MAINT MSG 49-41011 "NO FLAME SHUTDOWN" LOGGED ON LEG 0, PERFORMED B737-9 IFIM TASK 49-40-00-810-804 STEP B(2)B, NO ACTIVE FAULTS NOTED. STARTED APU X3 LOADED IT, NO PROBLEM NOTED.

ASAA2023072744281

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AFTER LANDING MAINT LIGHT ILLUMINATED. GROUNDED - YES. (RESOLVED ON W/O: 1961265 TASKCARD: N/R-00004 ) REVERSED MAINTENANCE PROCEDURES. FOUND FAULT CODE 74-42543. TROUBLESHOT PER IFIM G74-00-00-810-841. PERFORMED ENGINE 2 EEC IGNITION SYSTEM TEST REF AMM 71-00-00. TEST GOOD SEAMC JOE NOTIFIED. PER IFIM THIS WAS AN INTERMITTENT FAULT. THIS CLEARS MEL 74-00-01C. SEAMC JOE NOTIFIED. PLACARDS REMOVED.

CALA2023072802365

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AFT RH LAV OVERFLOW C/W WITH ECRA #2011-01000 ST EPS B.(1,3-21) FOR ALL OTHER FLEETS: "WITHIN 36 MONTHS, ACCOMPLI SH EC/RA 2011-01000, LAVATORY SPILL, SECTION 2.C., SUPPLEMENTAL INSPECTION, IN THE AREA FROM BODY STATION__926___ TO BODY STATIO N__986___, BETWEEN STRINGER_17L____ AND STRINGER_17R____, AND/OR FLOOR BEAMS__926___, AND/OR __986___ (OTHER)." SECTION 2.C., SUPPLEMENTAL INSPECTION, IN THE AREA FROM BODY STRINGER_17L____ AND STRINGER_17R____, AND/OR FLOOR STATION__926___ TO BODY STATION__986___, BETWEEN BEAMS__926___, AND/OR __986___ (OTHER)." C/W WITH ECRA #2011-01000 STEPS B.(1,3-21) FOR ALL OTHER FLEETS: "WITHIN 36 MONTHS, ACCOMPLISH EC/RA 2011-01000, LAVATORY SPILL, TOMC APPROVED DIP FOR LAVATORY INDEPTH CLEANUP ACCOMPLISHED. TOMC-APPROVAL FROM SC1ELBYC COMMENT WITHIN 36 MONTHS, ACCOMPLISH EC/RA 2011-01000,LAVATORY SPILL, SECTION 2.C., SUPPLEMENTAL INSPECTION, IN THE AREA FROM BODY STATION 926 TO BODY STATION 986, BETWEEN STRINGER 17L AND STRINGER17R REF EC/RA 2011-01000 REV AC PART 2, B STEP 21 QC RECORDS UPDATE.....CM QC REVIEWED T/A; 36 MONTHS.....CM U37298

CALA2023072802366

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PDA 3 PILOT REPORT OF SOUND HEARD RIGHT FORWARD FUSELAGE DURING FLIGHT. AIRCRAFT ON T0209 HEADED BACK TO IAH. DURING INSPECTION FOUND JACK AND WIRE HANGING OUT OF EXTERNAL POWER DOOR. HEADSET CONNECTED TO JACK ON EXTERNAL POWER DOOR ATTACHED TO AIRCRAFT. AIRCRAFT AIR RETURNED TO IAH GOING TO BOG. WHEN AIRCRAFT ARRIVED JACK WAS ATTACHED BUT HEADSET WAS MISSING. PDA CATEGORY 3 PER GMM 02-30-95. {COMPLETE LP NBRS ADDED TO ENABLE HYPERLINK BENEFIT} THE DENTS/ABNORMALITIES WERE ANNOTATED. INFO UPDATE"GRND HANDLING EQUIP DEPARTS ACFT" CONDITIONAL INSP PERFORMED BY EMPL U219918 PER AMM 05-51-59 AFTER THE AIR RTN OF T209/25JUL. ADD EMP:U219918. FOUND DENT STA 245.5 R APPROX STR 20.53-00-01-1A -1. APPLIED DENT DOT. FOUND DENT AT STA 245.5 AND INBTWEEN STR 19 AND 20. DENT IS 2.5X 2.5 X .020 DEEP AND W/ Y 125 IS ALLOWABLE LIMITS REF SRM. FOUND MULTIPLE SMALL DENTS APPROX STA 309 R BETWEEN STR 20 AND 22 R. FOUND SMALL DENTS WITHIN SRM ALLOWABLE DAMAGE REF SRM 53-00-01-1A-1, APPLIED DENT DOT. AIRCRAFT RELEASED FROM REPAIR STATION WAS MAINTAINED IAW FAA REGS. AND UNITED SPECIFICATIONS AND PROCEDURES AND IS AIRWORTHY WITH RESPECT TO WORK PERFORMED. PERTINENT DETAILS ARE ON FILE AT THE REPAIR STA. IN THE SIGNOFF, LIST THE VISIT TYPE,CERTIFICATE #, AND DESCRIPTION OF WORK PERFORMED. PAC MAINT ACCOMPLISHED UA PMC ON LINE MAINT CHECKS REF IFC2459X.

ASAA2023072644277

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DURING CRUISE, VTK AND MAP FAILURE FLAGS NOTED ON FIRST OFFICERS DISPLAY. ADDITIONALLY, "SINGLE FMC OPERATION" WAS DISPLAYED ON FIRST OFFICER MCDU. QRH FOR FMC FAIL WAS CONSULTED AND PER CHECKLIST FMC SOURCE SELECT SWITCH WAS PLACED TO "BOTH ON L" NO RIGHT SIDE (FMC-R) BEARING / DISTANCE ON "POS" PAGE 3. GROUNDED - YES. OMF LAST LEGF INBD FLT DECK EFFECTS FAULTED FMC-R, L/H FMC FAULTED R/H FMC LAST LEG AS WELL. PERF IFIM 34-61-00-810-837. 1 EA C/B ON P6-1 OPENED, TAGGED, UNTAGGED, RESET. R/H FMC OPS RESTORED. ETOPS GND VERIFICATION TEST SUCCESSFUL. SEAMC ETOPS PAT NOTIFIED. FMC XFER SWITCH RETURNED TO NORMAL POSITION.

ASAA2023072644272

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SPEED TRIM FAIL ON RECALLRESET ON PUSH. GROUNDED - YES. PER IFIM 22-11-00-810-D71, NO MESSAGES, ACCOMPLISHED DFCS TEST SYSTEMSPEED TRIM / STAB TRIM BITE, REF. AMM 22-11-00 / 501. TEST PASSED, INTERMITTIN FAULT. OK. FOR SERVICE. NO HISTORY FOR PAST 90 DAYS.

ASAA2023072644251

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SPEED TRIM FAIL LIGHT ILLUMINATED, SINGLE CHANNEL. GROUNDED - YES. DFCS TEST FOUND FAULT MSG 22-11186 ON LAST FLT LEG AMM 22-11-00, PERFORMED IFIM 22-11-00-810-C61 ALL TEST PASSED, NO MX HISTORY 60 DAYS.

ASAA2023072644275

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"WX FAIL" MESSAGE ON PFD. OCCASIONAL OK, BUT MOSTLY WX FAIL WHEN ATTEMPTING TO USE IN VARIOUS MODES. GROUNDED - YES. ACCOMPLISHED WEATHER RADAR OPS CHECKPER AMM 34-41-00. OPS CHECK NORMALNO HISTORY FOR 30 DAYS.SEAMC PAT NOTIFIED.

ASAA2023072544431

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GE DIAGNOSTICS REPORTS #1 ENGINE (SN 60A323) TREND DATA SHOWS EXCESS COKING OF THE FUEL NOZZLE MAIN ORIFICES. -----#PRI3/ETOPS----- (FULL SET FUEL NOZZLE REPLACEMENT 737MAX T/C 73-ASA-02)NO EXTENSION ALLOWED (150 CYCLES).CNR 20230725055. GROUNDED - YES. (RESOLVED ON W/O: 1963219 TASKCARD: N/R-00001 ) REPLACED FULL FUEL NOZZLE SET ON #2 ENGINE S/N 60A323. SEAMC AUSTIN NOTIFIED.

ASAA2023072544230

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FOUND ENG 2 EEC C1 FAULT WHILE PREFORMING T/C 05-020-01. GROUNDED - YES. (RESOLVED ON W/O: 1963301 TASKCARD: N/R-00001 ) INTERROGATED SMT WITH NO FAULTS FOUND. FAULT NO LONGER PRESENT REF IFIM G73-20-00-810-856. THIS CLEARS PLT C/N:25013973 SEAMC NOTIFIED.

SWAA2023072582021

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STAB OUT OF TRIM LIGHT ILLUMINATED AT LEVEL OFF; ELECTRIC TRIM UNAVAILABLE. R&R STAB TRIM MOTOR PER AMM 27-41-71. OPS CHECK GOOD.

ASAA2023072444228

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FO'S COURSE WINDOW IS BLANK. GROUNDED - YES. (RESOLVED ON W/O: 1962508 TASKCARD: N/R-00003 ) REMOVED AND INSTALLED SERVICEABLE DFCS MODE CONTROL PANEL, OPS CHECK GOOD, IAW B737-9 AMM 22-11-34-000-801 AND 22-11-34-400-801 SEE LOGBOOK PAGE 60495272 FOR DOWNGRADE AND APPLICATION OF MEL 22-99D SEAMC DARWIN NOTIFIED.

ASAA2023072444213

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FMC DISAGREE. GROUNDED - YES. PERFORMED GOOD OPERATIONAL TEST OF FMC REF AMM 34-61-00-710-801.

ASAA2023072444201

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#2 ENG 'DRIVE' LIGHT NOT ILLUMINATED WITH #2 ENG SHUT DOWN. GROUNDED - YES. (RESOLVED ON W/O: 1963130 TASKCARD: N/R-00002 ) REPLACED #2 ENGINE IDG. REF AMM 24-11-11. GROUND VERIFICATION SUCCESFUL. CLEAR MEL 24-11-02. REF LP 60716303 FOR IDG OIL AND FILTER CHANGE DEFERRAL. SEAMC SCOTT NOTIFIED. PLACARDS REMOVED.

ASAA2023072444202

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FOUND AMBER MAINT LIGHT ON. GROUNDED - YES. STATUS PAGE SHOWING: ENG 1 FAN COMP OVHT SENSOR, ENG 1 CONTROL, ENG 1 REVERSER. FOUND P91 MAINT S/W ENABLE, AND EEC 1 IN TEST MODE. ACCOMPLISHED IFIM TASK G73-20-00-810-869. NO FAULT HISTORY OR CORRELATED MSG. EEC1 MAINT ENG 1 POWER TEST, NO FAULTS. NOTE: HANGAR TOW-UP.

ASAA2023072344199

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AUTOPILOT REVERTED TO CWS IN PITCH /ROLLWITH VNAV/LNAV DISENGAGING TWO TIMES UNCOMANDED. BOTH TIMES RESET TO NOM OPS. GROUNDED - YES. PERFORMED IFIM 22-11-00-810-D20 ND IFIM 22-11-00-810-D21. NO ACTIE FAULTS. ONLY DFCS SHOWED RT FMC INTERMITTENT NO INFO FOM ADIRU. DUE TO FAULT IN FLT, ACCOMPLISHED A LAND VERIFY REF 22-11-00/201. ALL TESTS PASSED. NO PREVIOUS HISTORY.

ASAA2023072344206

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APU LOW OIL PRESSURE LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED IFIM TASK 49-10-00-810-801 STEP B. INITAL EVALUATION. NO FAULTS FOUND. APU OPS NML. SEAMC ROBERT NOTIFIED. A/C OK FOR SERVICE.

ASAA2023072344200

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DURING THE DESCENT CHECK LIST- ON "RECALL" MASTER CAUTION AND "SPEED TRIM LIGHT" ILLUMINATED, RAN QRH- BOTH LIGHTS EXTINGUISHED THEN MASTER CAUTION SYSTEM WAS RESET. GROUNDED - YES. CW IFIM 22-11-00-810-D71 MAINTANCE MESSAGES 22-11Q16 AND 22-11822 BITE TEST PASSED RESULT FAULT CORRECTIVE SEAMC AUSTIN NOTIFIED.

ASAA2023072344167

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WHILE PERFORMING , T/C 31-005-00 W/O 1962050. FOUND "ENG 1 EEC C2" MSG ON SCHEDULE MAINTENANCE TASK DISPLAY SYSTEM. GROUNDED - YES. ON DEFERRAL.

ASAA2023072344158

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WHILE PERFORMING T/C 31-005-00 FOUND LONG TIME FAULT "ENG 2 EEC C2" ON SCHEDULED MAINTENANCE TASK DISPLAY SYSTEM. GROUNDED - YES. ON DEFERRAL.

ASAA2023072344148

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PER T/C 31-005-00 FOUND LATCHED MESSAGE PACK CONTROL CHANNEL R. GROUNDED - YES. ON DEFERRAL.

ASAA2023072244211

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TECH SERVICES REQUEST FOR FOLLOW-UP TO MTX LIGHT & FAULT(#1 LEFT FAMV FAULT 36-12020 #1(LH) FAMV IS NOT IN COMMANDED POSITION)----(#PRI1)----ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. (RESOLVED ON W/O: 1962416 TASKCARD: N/R-00002 ) REMOVED AND REPLACED #1 LH FAMV PER AMM 36-12-03. OPS CK GOOD. OK FOR SVC. THIS CLEARS TSR , SEAMC MITCH NOTIFIED.

ASAA2023072244173

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WHILE PERFORMING T/C 31-005-00 FOUND "BLEED FAMV RVDT R" FAULT SHOWING ON SCHEDULED MAINTENANCE TASK DISPLAY SYSTEM. GROUNDED - YES. ACCOMPLISHED R/H PNEUMATIC ELECTRICAL LRU- REPLACEMENT TEST REF AMM 36-00-00. TEST PASS. "BLEED FAMV RVDT R" FAULT NO LONGER ACTIVE ON SMT.

ASAA2023072244151

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FOUND LATCH FAULT PACK CONTROL CHANNEL R. GROUNDED - YES. FOUND FAULT CODE 21-55341 PERFORMED IFIM TASK 21-51-00 SEC B INITIAL EVALUATION TO STEP 3. THIS CLEARED LATCH MESSAGE PACK CONTROL CHANNEL R. NO FURTHER ACTIONS NEEDED.

ASAA2023072244175

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WHILE PERFORMING NO1 ENG WASH T/C FOUND HPSOV OPEN/CLOSE LOCK BOLT HELICOIL CAME OFF. GROUNDED - YES. REMOVED AND REPLACED HPSOV WITH REF AMM 36-11-07. OPS CHECK GOOD.

ASAA2023072144172

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FOUND LATCH FAULT BLEED FAMV RVDT L. GROUNDED - YES. C/W FIM FAULT ISOLATIONREF FIM 36-12-00-810-803, STEP A, B FAULT CLEAREDNO OTHER DEFECT NOTED.

ASAA2023072144176

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AFTER LANDING GROUND 80 KNOTS "MAINT" LIGHT ILLUMINATED ON OVER HEAD PANEL. GROUNDED - YES. FOUND MAINTEANCE MESSAGE 36-12020 FOR FAMV ENGINE 1 PERFORMED PNEUMATICS ENGINE ON SYSTEM TEST PER REF AMM36-00-00-730-801. TEST PASSEDMAINT LIGHT OFF.

ASAA2023072144162

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DURING DESCENT, WITH MASTER CAUTION RECALL, SPEED TRIM FAIL ILLUMINATED. GROUNDED - YES. FCC "A" LOGGED 22-11186 FAULT. "B" SHOWS NO FAULTS LOGGED. PERFORMED IFIM 22-11-00-810-C61 & DETERMINED FAULT WAS A SOFTWARE NUISANCE FAULT. PERFORMED LRU TESTS SPEED TRIM/STAB TRIM 60.32 & ALL TESTS PASSED.

ASAA2023072144160

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CAPTAIN'S F/D MA GREEN LIGHT FLICKERS. GROUNDED - YES. (RESOLVED ON W/O: 1962645 TASKCARD: N/R-00001 ) PERFORMED LLM TEST AMM 22-11-00-700-801, ALL TEST PASSED, CLEARS MEL 22-11-12A & MEL 22-99B, PLACARD REMOVED, SEAMC PETER NOTIFIED.

ASAA2023072144159

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REF TC 05-020-01 - ENG #2 SMT ENG 2 EEC C1 SHORT TERM FAULT. GROUNDED - YES. NOTED NO CORRELATED FAULTS, ERASED LATCHED SMT MESSAGE. C/W TEST #32 - ENG IDLE SYSTEM TEST. ENG #2 SMT ENG 2 EEC C1 NO LONGER EXISTS. REF IFIM TASK G73-20-00-810-856.

ASAA2023072144163

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ENG 2 DRIVE LIGHT NOT ILLUMINATED. GROUNDED - YES. PERFORMED #2 IDG OPS CHECK IAW AMM 24-11-00 OPS CK GOOD SEAMC DAVE NOTIFIED. NON ASA EMP KYLE WALEN A&P N9VR0841.

ASAA2023072144168

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SMT MSG ENG 1 EEC C2 FAULT. GROUNDED - YES. ON DEFERRAL.

ASAA2023072044139

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REF. TC. 31-005-00 ENGINE NUMBER 1 SHOWS ACTIVE LATCHED FAULT CODE. 361-452-41. THE BLEED FAMV RVDT L. THIS SIGNAL IS OUT OF RANGE #36-12030. GROUNDED - YES. ON DEFERRAL.

ASAA2023072044141

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REF T/C 31-005-00SMT "BLEED FAMV RVDT L" MESSAGE SHOWS WITH CORROLATED MAINTENANCE MESSAGE 36-12030 "ENG 1 FAMV RVDT SIGNAL IS OUT OF RANGE". GROUNDED - YES. (RESOLVED ON W/O: 1961274 TASKCARD: N/R-00001 ) REMOVED AND REPLACED FAMV ON #1 ENG. PERFORMED ELECTRICAL LRU REPLACEMENT TEST AND PNEUMATIC ENGINE ON-SYSTEM TEST. BOTH TESTS PASSED. OPS CHECK GOOD. REF AMM 36-12-03. SEAMC ANDY NOTIFIED.