What was found
DURING C-CHECK INSPECTION, DISCOVERED CORROSION ON THE FUSELAGE SKIN LAP SEAM AT BS 908, LONGERON 26R. REPAIRED BY TRIMMING OUT THE CORRODED OVERLAPPING SKIN, HFEC INSPECTING, FABRICATING AND INSTALLING REPAIR SKIN FILLER, INTERNAL FINGER DOUBLER AND EXTERNAL DOUBLER WET WITH SEALANT. ACCOMPLISHED IAW EVERGREEN AIR CENTER, ENGINEERING CHANGE REPAIR AUTHORIZATION NR N420EA-53-003-EAC. (M)