As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT COMMAND A DISCONNECTED AFTER APPROXIMATELY 20 MINUTES AT CRUISE FL 360. WAS ABLE TO REENGAGE. ACFT GROUNDED. FOUND THAT THE MCP WAS FAULTING CODE 22-11606 FOR CHANNEL A. PERFORMED THE RING OUTS THAT ARE CALLED OUT ON FIM 22-11/817 WITH NO NOTED DISCREPANCIES. DUE TO THE MCP BEING RECENTLY CHANGED, REPLACED THE FCC A COMPUTER IAW AMM 22-11-33/401. OPS CHECKED GOOD.