What was found
AT CRUSE MOMENTARLY DUEL FMC FAILURE. LAV/VNAV DISCONNECT. SYSTEM RECOVERED AFTER 10 SECONDS. QRM PROCEDURE PERFORMED. GROUNDED - YES. FOUND MAINTENACE FAULT MGS 34-69001 "MORE THAN 1 SYSTEM HAS NO INPUT FROM FMC 1" PERFORMED IFIM 34-61-00-810-836 THE FMC FAULT IS NO LONGER ACTIVE BUT DUE TO RECENT HISTORY ON LAST 2 LEGS REMOVED L FMC COMPUTER PER AMM 34-61-02-000-801. INSTALLED L FMC COMPUTER PER AMM 34-61-02-400-801. PERF ALL SOFTWARE LOADS AND VERIFICATION PER AMM 34-61-00-470-802. ACCOMPLISHEDFMC OPERATIONAL TEST PER AMM 34-61-00-710-801 OPS TEST PASSED. SEAMC PETER ADVISED. INSTALLED/REMOVED 2 MIG-51A TAGS.