What was found
DURING C-18 CHECK, A 1/16 INCH CRACK WAS FOUND IN FUSELAGE SKIN AT BS 500C+5, STR 10 LEFT. MAINTENANCE CUTOUT DAMAGE IN FUSELAGE SKIN AT BS 500C+5, STR 10 LT AND PERFORMED A HFEC INSPECTION TO VERIFY NO CRACKS EXIST; FABRICATED 2 EACH FILLERS, A DOUBLER AND TRIPLER; INSTALLED REPAIR PARTS IAW ER 03-5300-04301-ES2.