Viper Pitts S2S Aerobatic Aircraft For FSX Only. Jason Newburg World Renound Aerobatic Pilot this is my rendition of his Viper Pitts S2S aerobatic aircraft Textures and other updates by. The FSLightman www. fslightman. com. Plane by Mikko Maliniemi. Sounds by Aaron R. Swindle. The Pitts S-2S has G-limits of +6 and -3 Gs so its fully aerobatic. S-2S was designed as follower for Pitts S-1S T biplanes. It has bigger Lycoming AEIO-540-D4A5 (260 hp) engine and Hartzell metal two or three-blade constant speed propeller which gives the plane 2, 700 fpm rate of climb at sea level and 164 kt max level speed. This gMax design features full moving parts, FSX type reflection mapping, Dynamic Virtual Cockpit, and instrument panel.