What was found
DURING C4 C-CHECK, INSP NOTED THE AFT CARGO COMPARTMENT STRUCTURAL PROFILE AT FRAME 56 HAS CORROSION AT THE NUT PLATES. MX PERFORMED MAJOR REPAIR BY REMOVING CORRODED PROFILE, FABRICATING REPLACEMENT PROFILE AND INSTALLING REPLACEMENT PROFILE IAW SRM 51-42-11, 51-72-11, 51-75-12 AND DWG D53974972.