What was found
FWD CABIN FLOOR BEAM HAS CORROSION STA 328, RBL11.5, WL 207. CORROSION ON FLOOR BEAM AT BS 328 RBL 11.5 WL 207 FOUND TO BE OUT OF LIMITS, IAW B737-800 SRM 53-10-51-1A-1. REMOVED AND REPLACED UPPER CHORD AND FASTENER, PER 737-800 SRM 51-40-02 AND 737-800 SR, 53-10-51-2R-7 REF CUSTOMER CARD 00323 FOR REPAIR ACCOMPLISHMENTS.