What was found
DURING M-CHECK, FOUND MAIN CABIN FLOOR PANEL 26 RIBS PREVIOUS REPAIR CORRODED. REMOVED OLD FILLER AND MADE NEW FILLER IAW SRM 51-70-4, FIG1 NEW FILLER MATERIAL IAW SRM 53-23-0, FIG 4 TREATED AND PRIMED IAW SRM 51-10-3, INSTALLED NEW FILLER IAW SRM 51-70-4, FIG 1.