What was found
TYS - DURING A SCHEDULED INSPECTION CORROSION WAS FOUND ON THE LEFT HAND FLOORBEAM AT FRAME 19. MAINTENANCE REMOVED AND REPLACED THE FLOORBEAM IAW EMB SRM 51-40-02, 53-21-10,51-40-06, 51-20-03, AND CPM 51-21-04,05,06. THE AIRCRAFT WILL BE RELEASED UPON COMPLETION OF INSPECTION.