As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FT 1091, AIR RETURN BACK. DURING CLIMBOUT AND CRUISE ACFT REQUIRED 2.7 DEGREES LEFT RUDDER TRIM IN ORDER TO FLY STRAIGHT. CREW REPORTED THIS GETTING WORSE WITH THE CLIMB WITH OR WITHOUT A/P ON OR OFF. PERFORMED RIGGING AND TESTS OF THE RUDDER TRIM ACTUATOR. ALL TESTED NORMAL. NO DEFECTS NOTED. ACFT OK FOR SERVICE.