An aircraft that has a structural skin panel. The structural skin panel has: at least one metal sheet having a cutout portion and a perimeter portion, the perimeter portion having a plurality of spaced apart perforations formed therein; and first and second fiber reinforced performs that are generally transparent and that sandwich the at least one metal sheet therebetween and overlay the perimeter portion. An optically transparent resin saturates the first and second fiber reinforced performs and fills the perforations in the at least one metal sheet. Portions of the fiber reinforced preforms that overlay the cutout form a window portion in the structural skin panel.