As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBOUT, AC ELEV BUMPED IN LEFT TURN. AUTO PILOT SERVO IN AB. AFT LEVEL OF FLT LEVEL 310 ELEV TRIM RAN AWAY. AUTO PILOT DISCONN AND CRUISE CONT TO RUN. COULD NOT DUP PROBLEM. REMOVED AND REPLACED AUTO PILOT ACCY BOX PER MM 22-11-141 AND RELAY R102 AUTO PILOT AND STAB TRIM SYS. REPLACED RELAY. AC DOWNGRADED TO NOT CATEGORY 2 CHECK A AND B.