As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CONTROL ISSUE, FLIGHT DIVERTED. ON TAKEOFF, EXCESSIVE RUDDER TRIM ON CLIMB. RT INBOARD AIL ON EICAS SHOWS IN UP POSITION. CONFIRMED BY FIRST OFFICER, RT INBOARD AIL NOT MOVING, STUCK IN UP POSITION. RUDDER SYS FOUND NORMAL AT CENTER WITH 0 TRIM. WITH CENTER SYS ONLY PRESSURIZED ABLE TO ACTUATE RT INBOARD AIL UP AND DOWN STOP TO STOP WITH HAND PRESSURE. REPLACED RT INBOARD CENTER SYS ACTUATOR. SYSTEM OPS NOW NORMAL.