FS2004 Piasecki X-49 Speedhawk helicopter. The X-49A “Speedhawk” is an experimental helicopter under development by Piasecki Aircraft using the airframe of a Sikorsky YSH-60F Seahawk. Original aircraft design by Jordan Moore. Pilot model by Dave Eckert. Additional virtual cockpit modeling and texturing by Deane Baunton. Transparent rotor textures by Brian McIntyre. Package by Shawn Lund.