What was found
INSPECTION FOUND STRINGER/FRAME CORRODED AROUND FASTENERS AT KEEL BOX INTERIOR, STA 598, STRINGER 29R. THE KEEL BOX WEB WAS REMOVED. TWO REPAIR ANGLES WERE FABRICATED IAW SRM 53-01, FIGURE 2 AND 51-10-2A. THE ANGLES AND KEEL BOX PANEL WERE INSTALLED IAW SRM 51-10-4, 51-30-5, 53-01, FIGURE 2, AND 51-30-1.