What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND CORROSION ON FLOORBEAM AT FRAME 88. MAINTENANCE REMOVED LEFT SHEAR PLATE AT FRAME 88 IAW EMB 190 SRM 51-40-02, 51-40-04, 51-41-01, 51-41-02, AND 51-43-01. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.