As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R/H AILERON INBOARD PCU IS CORRODED WHERE IT CONNECTS TO FWD END OF PCU LINK. (C-CHECK RO 9/3/21) REMOVED CORRODED R/H INBOARD AILERON PCU AND INSTALLED NEW SERVICEABLE PCU IAW CRJ-200 AMM 27-14-01-000/400-801 AND COMPLIED WITH ATTACHED SKY CARD 27-900-1002-SKY. REF ATTACHED CONTINUATION FOR ALL WORK PERFORMED.