As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ALL PHASES OF FLIGHT, AIRCRAFT HAD EXTREME RIGHT ROLL REQUIRED ABNORMAL LEFT AILERON TRIM WITH AUTO PILOT ENGAGED RETRIM L WING DOWN CAS MESSAGE ILLUMINATED WHICH REQURED MORE LEFT AILERON TRIM TO EXTINGUISH MESSAGE. TESTED AND FOUND TRIM SYSTEM BINDING. GAINED ACCESS TO AILERON PCU AND FOUND TO BE BINDING. REMOVED AILERON PCU P/N 9914440-15 S/N 0038 AND INSTALLED EXCHANGE PCU P/N 9914440-15 S/N 0400. WORK DONE IAW CITATION 750 MM 27-11-05.