What was found
NR 4 SLAT HAD LOCAL DELAMINATION AT THE OUTBOARD END LOWER SURFACE OF THE TRAILING EDGE WEDGE. *S/D* THE LOCAL DELAMINATION FOUND IN THE NR 4 SLAT IS SYSTEMIC ON THE TRAILING EDGE WEDGES ON THE 777 SLATS. BOEING IS CURRENTLY WORKING ON A MODIFIED DESIGN TO REPLACE THE CURRENT WEDGE DESIGN. THIS CURRENT SLAT HAD BEEN REPAIRED PER EVA E97-335A WITH AN INTERIM REPAIR THAT HAD REQUIREMENTS FOR INITIAL AND REPETITIVE INSPECTIONS UNTIL A PERMANENT REPAIR COULD BE INSTALLED AT THE NEXT HMV. THEREFORE, GSO INSTALLED A PERMANENT REPAIR DOUBLER PER TIMCO REO-G10847.