What was found
MAIN CABIN FLOOR STR STA 330, BL0 TO RBL25 HAS AREAS OF CORROSION AROUND NUT PLATES. (OUT OF LIMITS) REMOVED FLOOR SUPPORT IAW SRM 51-40-02. FABRICATED ON MAE TRAV NR T9/808384. INSTALLED NEW FLOOR SUPPORT AND T-CHORD STA 330, RBL 4-25, IAW SRM 51-40-02. CATEGORY "A". MAJOR REPAIR.