As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PERFORMANCE OF BLEEDING OF HYD SYS NR 1 & 2. D FOUND THE CO-PILOTS SIDE AILERON CONTROL COLUMN TO BE CLICKING. COMPLIED WITH RE-TORQUE OF CONTROL COLUMN "QUADRANT-SHAFT" INTERFACE NUT IAW REO. NO DAMAGE TO LOCK TAB WASHER NOTED, CLICKING CEASED. FOUND TO BE WORKED PREVIOUSLY IAW STEP 4, NOTE 1. PERMANENT REPAIR ACCOMPLISHED.