KnAAZ builds Checkmate fighter prototype for static tests

https://aviation21-ru.translate.goog/knaaz-stroit-prototip-istrebitelya-checkmate-dlya-staticheskix-ispytanij/?_x_tr_sl=ru&_x_tr_tl=en&_x_tr_hl=es&_x_tr_pto=ajax,nv,elem