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= 379 BETWEEN 41RBL TO 46RBL AT PAX CABIN FWD WET AREA. SILLS IN FS349 TO FS379 BTW 41RBL TO 46RBL AT PAX CABIN WAS REPLACED FOR NEW ONE (P/N: SH670-32174-11) PER CRJ-900 SRM 51-42-06-001-001-01, 51-42-10-001-001-A01 AND 51-42-21-001-001-A01.