What was found
WHILE AC WAS IN FOR HEAVY CHECK, LEVEL TWO CORROSION WAS FOUND, IN WHICH DUE TO THE EXTENT OF DAMAGE WAS ALSO CLASSIFIED AS A MAJOR REPAIR, ON RT FLOORBEAM AT FR 17. MAINTENANCE REMOVED AND REPLACED THE FLOORBEAM PER THE EMB SRM. AC STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.