What was found
DURING C-CHECK, CIRCUMFERENTIAL SPLICE STRAP FOUND CORRODED. LOCAL LEVEL 2, COCKPIT FLOOR FRAME 13-14, STR 20R-21R. MAINTENANCE PERFORMED REPAIR OF CIRCUMFERENTIAL SKIN SPLICE STRAP AT FRAME 13-14, STR 21R-20R IAW EC5310-01749. THE ACFT WAS APPROVED FOR RETURN TO SERVICE.