▁the ▁Germ ans ▁inv aded ▁during ▁Operation ▁Bar bar ossa . ▁By ▁Spring ▁ 1 9 4 1 ▁the ▁S AM - 1 3 ▁was ▁under going ▁tests ▁at ▁L II , ▁pil oted ▁by ▁Mark ▁L ▁Gal la i , ▁even ▁being ▁entered ▁for ▁a ▁summer ▁air ▁race . ▁All ▁flying ▁ceased ▁after ▁the ▁German ▁invasion , ▁which ▁prompt ed ▁destruction ▁of ▁the ▁aircraft . ▁ ▁Spec ifications ▁( S AM - 1 3 ) ▁ ▁References ▁ ▁Further ▁reading ▁ ▁External ▁links ▁ ▁S AM - 1 3 ▁at ▁C trl - c . li u . se ▁S AM - 1 3 ▁at ▁Val ka . cz ▁( In ▁English ) ▁S AM - 1 3 ▁at ▁Air war . ru ▁( In ▁Russian ) ▁ ▁Category : M os kal ye v ▁aircraft ▁* ▁* ▁Category : L ow - wing ▁aircraft ▁Category : T win - eng ined ▁push - pull ▁aircraft ▁Category : A ircraft ▁first ▁flow n ▁in ▁ 1 9 4 0 ▁Category : Ab andon ed ▁military ▁aircraft ▁projects ▁of ▁the ▁Soviet ▁Union ▁* <0x0A> </s> ▁B lag oj ▁Stra ch kov ski ▁is ▁a ▁Mac ed onian ▁national ▁hero , ▁Y ug oslav ian ▁part isan ▁who ▁died ▁during ▁World ▁War ▁II . ▁ ▁Biography ▁B lag oj ▁Stra ch kov ski ▁was ▁born ▁in ▁V eles , ▁ 2 9 ▁February ▁ 1 9 2 0 ▁in ▁a ▁poor ▁Mac ed onian ▁family . ▁After ▁he ▁finished ▁his ▁primary ▁education ▁he ▁started