What was found
LNAV, VNAV TEMPORALLY BUMPED OFF PRIOR TO TOP OF DESCENT. OBSERVED VTK & CWS ROLL MESSAGES ON FO SIDE. B AUTOPILOT WAS BEING USED. ACFT GROUNDED. ACCOMPLISHED FLT FAULT REVIEW DFCS IAW FIM 22-11, TASK 801, LAST LEG FAULTS ON B SIDE: 22-11006, 22-11822 AND 22-11071. A SIDE: 22-11822. ACCOMPLISHED FIM 22-11, TASK 811 FMC PROBLEM, ALL TESTS PASS. ACCOMPLISHED FIM 22-11, TASK 807 ADIRU PROBLEM, ALL TESTS PASSED. ACCOMPLISHED DFCS CURRENT STATUS FIM 22-11, TASK 801 CURRENT STATUS PASSED.