As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/P DISENGAGED TWICE DURING FLT WITH CMD B ENGAGED. ACFT GROUNDED. DFCS BITE SHOWED DISCONNECTS CAUSED BY FAULT 22-11607 MCP DATA INV. ACCOMPLISHED T/S FOR FAULT 22-11607 IAW FIM 22-11, TASK 817 - MCP FAILED INITIAL EVALUATION TEST (FIM 22-11 TASK 803). REPLACED MODE CONTROL PANEL IAW MM 22-11-34-000-801/ MM 22-11-34-400-801. PERFORMED DFCS GROUP 32 (MCP LRU) TEST IAW MM 22-11-34-740-801, DFCS GROUP NR 49 (LAND VERIFY) TEST IAW MM 22-11-00, AND HGS SENSOR TEST FOR FCC/AT IAW HGS SMM 34-36-00. ALL TESTS PASS.