As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LEVEL OFF FROM CLIMB, FMC SYSTEMS SWITCHED CPU PAGE TO IAS LEGS PAGE. VNAV DISCONNECTED TO CWS PITCH AND LNAV DISCONNECTED TO CWS ROLL. ROUTE DISAPPEARED FROM HSI. DURING APPROACH AP ENGAGED IN GS AND LOC, AUTOPILOT PITCHED UP RADICALLY AND SPEEDS DECREASED. AT DID NOT CONNECT.