What was found
MCN - MAJOR REPAIR - C-12 CHECK - CORROSION ON FORWARD CARGO COMPARTMENT DOOR CUTOUT LOWER SILL PANEL, BS 560 - BS 620, S26R. REPLACED FORWARD CARGO COMPARTMENT DOOR CUTOUT LOWER SILL PANEL, BS 560 - BS 620, S26R IAW B757-200 SRM 51-40-02.