What was found
DURING C-18 CHECK, A 2 INCH CRACK WAS FOUND IN FUSELAGE SKIN JUST ABOVE LAP SEAM AT BS 500D+10, STR 10 RT. MAINTENANCE CUTOUT CRACK IN FUSELAGE SKIN AT BS 500D+10, STR 10 RT; PERFORMED A HFEC INSPECTION OF CUTOUT TO VERIFY NO CRACKS EXIST. FABRICATED 2 EACH FILLERS AND A DOUBLER; INSTALLED REPAIR PARTS IAW T/C M1A53108.