What was found
DURING C-CHECK, FOUND LOWER AFT FUSELAGE C-4 DOOR CUT-OUT INNER SKIN CUT-OUT FRAME HAS HOLE AND CORROSION AROUND FRAME SKIN. REMOVED CORROSION IN AREA. FOUND WITHIN LIMITS, STOP DRILLED CRACK, FABRICATED DOUBLER. INSTALLED IAW DER NR MHA 3062. (X)