As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SILLS IN STA. FS= 349 TO FS= 409 BETWEEN 41RBL TO 46RBL AT PAX CABIN FWD WET AREA. ON SILLS IN STA. FS= 349 TO FS= 409 BETWEEN 41RBL TO 46RBL AT PAX CABIN FWD WET AREA WAS REPLACED PER CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-20-001-001-A01,CRJ900 SRM 51-42-13-001-001-A01