"Yakovlev-55" control line aerobatic F2B demountable model of Yuriy Yatsenko

Model: "Yakovlev-55" (Yak 55)
Сreator/Manufacturer: Yuriy Yatsenko
Weight: 1620±20 g 
Engine: "Discovery Retro 60" 10 cc, or "Discovery Retro 76" 12.5 cc