What was found
DURING HEAVY MAINTENANCE: CORROSION ON FLOOR STRUCTURE WEB (UPPER AND LOWER SURFACE) BTW FR 12-16 AND Y=-1090 TO Y=-1270 (LH SIDE); REF. TOMX WO: N354JB/2047 NR-00259 - CORROSION ON FLOOR STRUCTURE WEB (UPPER AND LOWER SURFACE) BTW FR 12-16 AND Y=-1090 TO Y=-1270 (LH SIDE) WAS REMOVED AND EVALUATED OUT OF LIMITS PER EMB-190 SRM 51-12-- 01, SRM 51-10-03 AND SRM 53-10-10/AD56. THEREFORE WAS REPLACED PER EMB 190 SRM 51-41-02 AND SRM 51-43-04.