As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R/H FLAP BPSU MOUNTING BOLTS ARE CORRODED (C-CHECK- RO 11/11/21) REPLACED AND INSTALLED NEW HARDWARE ON RH FLAP BPSU IAW CRJ 200 AMM 27-51-10-400-801 STEPS 3.B.(4), (6)-(7). REPLACED ONE AT A TIME AND NO ELECTRICAL CONNECTORS WERE DISCONNECTED.