As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO PILOT DISENGAGED TWICE ON FLIGHT. FIRST TIME AS WE LEVELED AT FL 370 AT CRUISE. SECOND TIME ON THE DESCENT AS POWER WAS COMING UP TO CORRECT SPEED A/P DISENGAGED AND AIRCRAFT PITCH DOWN AS IT SEEMED OUT OF TRIM. GROUNDED - YES. ACCOMPLISHED DFCS BITE FAULT REVIEW FOUND 5 CHANNEL A FAULTS RELATED TO MCP. REMOVED AND REPLACED DFCS MCP ACCOMPLISHED INSTALLATION AND LLM TESTS WITH NO FAULTS NOTED REF B737-800 AMM 22-11-34-400-801.