What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND CORROSION ON RIGHT HAND BEAM AT FRAME 87. MAINTENANCE REMOVED AND REPLACED THE RIGHT FLOORBEAM FROM FRAME 86 TO FRAME 89 IAW EMB 175 SRM 51-12-01, 51-40-02, 51-41-01, AND 51-43-01. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.