What was found
SUPPORT TASK: MAIN CABIN STA 980 RBL-60 CREASE BEAM INNER CHORD CORRODED. CREASE BEAM FOUND TO BE OUT OF LIMITS PER SRM 53-70-51- IAW BAC DWG 147A8501 REV A AND B737-700 SRM 51-40-05. INSTALLED 1A-1. REMOVED CREASE BEAM AND CREASE BEAM STRAP IAW B737-700 SRM NEW INNER CHORD AND CREASE BEAM STRAP IAW BAC DWG 147A8501 REV A 51-40-02. RECEIVED NEW INNER CHORD (CREASE BEAM) PN# 147A8540U8 . IAW BAC DWG 147A8501 REV A. LOCATED AND DRILLED NEW INNER CHORD