What was found
SHIP 673 MAIN CABIN BETWEEN STA 1681.8 - 1720 BL0 - RBL50 APPROS WEB HAS CORROSION. DOT 39-013. CORRECTIVE ACTION: REMOVED CORROSION AT AFT DECK PLATE AREAS A,B,C AND D. MAIN CABIN BETWEEN STA 1681.8 - 1720 BLO - RBL50 IAW B757 SRM 53-60- 51. EVALUATED AREA AFT DECK PLATE AREA A,B,C AND D. AREA A IS .059 AND ORIGINAL THICKNESS IS .071 MATERIAL LOSS IS MORE THAN 10% A FOUND TO BE OUT OF LIMITS, B, C AND D AREA READING .061 .067 AND .065 ORIGINAL THICKNESS IS .071 MATERIAL LOSS IS LESS THAN 10% AREAS B, C AND D ARE FOUNT TO BE WITHIN LIMITS IAW B757 SRM 53-60-51. ACCOMPLISHED REPAIR AT AREA A IAW B757 SRM 53-60-51-2R REPAIR 11.