As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER POSITION POTENTIOMETER LINKAGE HAS CORRODED HARDWARE AND THE LINKAGE IS HARD TO MOVE AT THE VERTICLE STABILIZER LOWER REAR SPAR. (C-CHECK) RO 4/9/2020 REMOVED AND REPLACED HARDWARE ON RUDDER POSITION POTENTIOMETER LINKAGE IAW CRJ200 AMM. TORQUE WRENCH S/N:0518902024 CAL. DATE APRIL 5 2019