What was found
***WHILE A/C WAS OUT OF SERVICE FOR HEAVY CHECK*** AT FWD WET AREA FLOOR STRUCTURE, CORROSION LOCATED ON FLOOR DOUBLER BTW 13-14 AT RBL 42. AT FWD WET AREA FLOOR STRUCTURE, FLOOR DOUBLER REPLACED BTW 13-14 AT RBL 42 IAW SRM 51-41-02 & 51-43-04. PSE 53-10-027. A/C REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.