What was found
DURING C4/S1 CHECK, INSPECTION REPORTED FLOORBEAM AT FR16, STA Y254, CORRODED ON THE TOP CAP. DETERMINED CORROSION TO BE OUT OF LIMITS IAW SRM 53-11-14. REMOVED AND REPLACED FLOORBEAM FROM FR12 THRU FR24, STA 254, IAW SRM 52-42-11 AND 51-72-11.