What was found
MAIN CABIN, FLOOR SUPPORT AT STA 1640 TO 1660, LBL 55 HAS CORROSION AROUND NUT PLATES. BLENDED CORRODED AREAS IAW B757 SRM 51-10-02-0G. ORIGINAL MATERIAL THICKNESS OF .071" IAW B757 SRM 53-60-13-0I, FIG. 1, DETAIL VII. REMOVED .003" FOR REMAINING THICKNESS OF .068". FOUND TO BE WITHIN LIMITS IAW B757 SRM 53-60-13-1A, FIG. 101, DETAIL III. REMOVED AND REINSTALLED 2EA. NUTPLATES IAW BAC DWG 146N8722, REV. A AND B757 SRM 51-40-02-0G. ALODINED AND PRIMED AREA IAW B757 SRM 51-20-01-0G.