As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND CORROSION ON THE LH AILERON OTBD PCU AT LINK ATTACHMENT POINT (C-CHECK RO 10/4/2021) REMOVED AND REPLACED LH OUTBOARD AILERON PCU WITH SERVICABLE PART AS PER CRJ 200 AMM 27-14-01-000-801 AND CRJ 200 AMM 27-14-01-400-801 CALIBRATED TOOL USED TUC4822 NEXT CAL DUE 30 JUN22. COMPLIED WITH ATTACHED TASK CARD 27-900-1002-SKY.