As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON MOUNTING ANGLE OF LOWER SILL AREA AT SERVICE DOOR CUTOUT DUE TO EXCESSIVE CORROSION ON MOUNTING ANGLE OF LOWER SILL AREA AT SERVICE DOOR CUTOUT WAS REPLACED PER CRJ900 SRM 53-21-23-101-001-A02,CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01 , CRJ900 SRM 51-41-02-001-001-A01 AND CRJ900 AMM 53-21-27 (CONFIG A02)