As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN F/O SIDE IS THE MASTER ON THE AFDS WITH A/P ON OR OFF SELECTED SPEED IN MCP WINDOW DOES NOT CHANGE W/SPEED SELECTOR KNOB MOVEMENT. ALL MODES TOGA, LVL CHANGE, SPEED, VNAV SPEED INTV, INOP WHEN CAPTS SIDE IS AFDS MASTER EVERYTHING APPEARS TO OPERATE NORMALLY. REPLACED FCC B IAW MM 22-11-33 OPS CKS NORMAL. DFCS FCC B LRU INTERFACE GRP 35 BITE CKS NORMAL. DFCS LAND VERIFY GRP 49 BITE CKS NORMAL. GROUND VERIFICATION TEST SUCCESSFUL.