Viper SD 4 light sport aircraft at the 2011 U.S. Sport Aviation Expo in Sebring Florida, Light Sport and Ultralight Flyer web video magazine.

Viper SD 4 light sport aircraft

Viper SD 4 - Dan Johnson and the Lightsport & Ultralight Flyer take a look at a new entry into the lightsport aircraft category the Viper SD 4 from Tomark Aero, at the U.S. Sport Aviation Expo 2011.

Viper SD 4 light sport aircraft

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