What was found
DURING C-CHECK IN CABIN, FOUND UPPER SURFACE OF THE LT CUSP EXTENSION AREA, FS 1500, LT, SERVICE DOOR AFT LOWER CORNER INSIDE SCUFF PLATE, HAS CORROSION BELOW. FILLER FOUND BEYOND LIMITS, FABRICATED NEW FILLER AND INSTALLED FILLER AND SCUFF PLATE IAW SRM'S 51-3-0, 51-1-8, 53-2-0, 51-1-0.