What was found
INSPECTION TYPE: C, LT W L/E RIB AT OLES 1277.15 FOUND CORROSION AT ROTARY ACTUATOR MOUNT BOLT HOLES BORE AND CUTOUT SURFACE. CORROSION BLEND OUT 0.022 INCH X 0.5 INCH X 0.5 INCH EXCEED SRM LIMIT. WING LEADING EDGE RIB INTERMIN CORROSION REPAIR CUTOUT AS PER EO B747-5740-17207 APPENDIX -A-. COMPLETED REPAIRS TO BE DETAIL VISUALLY INSPECTED AT EVERY C-CHECK NOT TO EXCEED 18 MONTHS AS PER EO B747-5740-17207 APPENDIX -B-.