▁use ▁as ▁advanced ▁train ers , ▁while ▁a ▁further ▁two ▁aircraft , ▁to ▁be ▁designated ▁I - 1 5 bis ▁and ▁power ed ▁by ▁His p ano - Su iza ▁ 6 ▁M b ▁engines ▁were ▁ordered ▁by ▁the ▁Air ▁Force , ▁but ▁on ▁ 1 7 ▁June ▁ 1 9 4 0 , ▁the ▁Soviet ▁Union ▁occupied ▁Lat via , ▁ordering ▁all ▁av iation ▁related ▁work ▁to ▁be ▁stopped . ▁ ▁Spec ifications ▁( I - 1 5 b ) ▁ ▁Notes ▁ ▁References ▁▁ ▁Davis , ▁Ch uck . ▁" Lat via ' s ▁Little ▁Haw k ". ▁Air ▁En th us iast , ▁Fort y - e ight , ▁December ▁ 1 9 9 2 ▁to ▁February ▁ 1 9 9 3 . ▁. ▁pp .   5 8 – 6 4 . ▁" Pl ane ▁Fact s : Lat v ian ▁light weight ". ▁Air ▁International , ▁January ▁ 1 9 7 9 , ▁Vol . ▁ 1 6 ▁No . ▁ 1 . ▁pp .   4 5 – 4 6 . ▁ ▁External ▁links ▁ ▁V EF ▁I – 1 5 ▁Lat v ian ▁aircraft ▁( In ▁Lat v ian ) ▁ ▁Category : 1 9 3 0 s ▁Lat v ian ▁military ▁tra iner ▁aircraft ▁Category : L ow - wing ▁aircraft ▁Category : Single - eng ined ▁tra ctor ▁aircraft <0x0A> </s> ▁Thomas ▁Lund ▁Hel veg ▁( ; ▁born ▁ 2 4 ▁June ▁ 1 9 7 1 ) ▁is ▁a ▁former ▁Dan ish ▁professional