As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT "A" WILL NOT STAY ENGAGED AT CRUISE ALTITUDE. ACFT GROUNDED. DFCS FLT FAULT REVIEW SHOWS FLTS W/ NUMEROUS MCP DATA INV 22-11607 FAULT W/MCP SUSPECTED LRU. ALSO REF FIM 22-11, TASK 817. R & R MCP REF MM 22-11-34. OPS NORMAL REF SAME.