What was found
DURING HEAVY MAINTENANCE, CORROSION ON FLOORBEAM AT PASSENGER CABIN FLOOR STRUCTURE FRAME 87 Y=-300; ALL WORK ACCOMPLISHED ON TOMEX NRC 00383, CORROSION ON FLOORBEAM AT PASSENGER CABIN FLOOR STRUCTURE FRAME 87 Y=-300 WAS REMOVED AND EVALUATED, THEREFORE IT IS OUT LIMITS. THE FLOOR BEAM WAS REPLACED PER EMB190 SRM 51-41-01 AND SRM 51-43-01. (CONSIDERED AS A MAJOR REPAIR) (SUPPLEMENTAL INFORMATION ADDED TO DESCRIPTION)