What was found
DURNG C-CHECK INSPECTION, DISCOVERED CORROSION ON THE LEFT CANTED BULKHEAD FUSELAGE SKIN LAP SEAM AT STATION 1291 AND 1326 ALONG LONGERON 16L. REPAIRED BY TRIMMING OUT THE CORRODED OVERLAPPING SKIN, HFEC INSPECTING, FABRICATING AND INSTALLING REPAIR SKIN FILLER, EXTERNAL REPAIR DOUBLER AND TITANIUM INTERNAL REPAIR DOUBLER WET WITH SEALANT. ACCOMPLISHED IAW EVERGREEN AIR CENTER, ENGINEERING CHANGE/REPAIR AUTHORIZATION NR N660HA-53-018-EAC. (M)