What was found
DURING C-CHECK LAVATORY UNDER FLOOR OMEGA BEAM CAP IS CORRODED, LOCAL LEVEL 2, AS MARKED ON RT SIDE AROUND NUTPLATE. MAINTENANCE BLENDED CORROSION AROUND NUTPLATE 100 NR MATERIAL LOSS, R & R OMEGA BEAM CAP IAW SRM 51-40-02. THE ACFT WAS APPROVED FOR RETURN TO SERVICE.