What was found
DURING HEAVY CHECK INSPECTIONS OF THE INTERNAL FLOOR STRUCTURE CORROSION FOUND ON CF ILL, FR 89 TO FR 90, RBL 12, INTERCOSTAL FLOOR SUPPORT, FLOOR SUPPORT INTERCOSTAL REPLACED ON FR 89 TO FR 90, RBL 12 IAW ERJ 175 SRM 51-41-02, SRM 51-43-03, AND SRM 51-41 01.REV 45.