What was found
DURING C-04 CHECK 2 EACH .5000 INCH CRACKS WERE FOUND ON AFT CARGO COMPARTMENT FORWARD BULKHEAD, LT UPPER CORNER FRAME PLATE. MAINTENANCE STOP DRILLED CRACK AND PERFORMED A HFEC INSPECTION TO VERIFY CRACK WAS CONTAINED, FABRICATED A REPAIR DOUBLER AND SHIMS; INSTALLED REPAIR PARTS IAW AWA E.R. 26-5314-00011-JS4.