As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT FLAP HINGE BOX AT WS 220.00 NUT CORRODED ON AFT OUTBOARD SIDE OF BRACKET. C-CHECK RO 11/11/2020. REMOVE AND REPLACED NUT P/N MS17825-7 ON LT HINGE BOX AT WS 220.00 OUTBOARD SIDE, IAW CRJ 200 AMM. REMOVED AND REPLACED NUT P/N MS17828-7 ON LT HINGE BOX AT WS 220.00 OUTBOARD SIDE, IAW CRJ 200 AMM. TORQUE WRECH WVACT 10147, CAL DATE 30 SEPT 21.