As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR FLOOR SILL HAS EVIDENCE OF CORROSIO ON THE I/B FACE OF THE FWD CUP RECESS ATTACH POINT. (C-CHECK) RO:2/14/2020REMOVED CORROSION FROM PAX DOOR FLOOR SILL I/B FACE OF THE CUP RECCESS ATTACH POINT. ORIGINAL MATERIAL THICKNESS .063€?, MATERIAL REMOVED .019€?, REMAINING MATERIAL THICKNESS .044€?. FOUND OUT OF LIMITS PER CRJ 700 SRM. REPLACED PER CRJ 700 SRM.