What was found
DURING ROUTINE C-CHECK FOUND EXTERNAL FUSELAGE SKIN FROM STATION 620 TO 630 AT LONGERONS 29 LEFT AND 30 LEFT. REMOVED DAMAGED SKIN AREA. FABRICATED REPAIR PARTS, LOCATED, DRILLED, TRIMMED, TREATED, PRIMED, AND INSTALLED REPAIR PARTS AND NEW FASTENERS IAW COOPESA EO COO-8-53-407-4.