As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT ABOVE 20,000 FT, WHEN AUTOPILOT ENGAGED PITCH TRIM MOVES FULL NOSE DOWN AND AC LEAVES ASSIGNED TRIM MOVES FULL NOSE DOWN AND AC LEAVES ASSIGNED ALTITUDE. AP LIMIT FLAG DISPLAYS. RIGGED MECHANICAL PITCH FEEL IAW MM 27-41-17. OPS CHECK NORMAL. (K)