d ▁by ▁T DS . ▁In ▁ 1 9 2 8 , ▁the ▁n avy ▁ordered ▁four ▁J ▁ 4 ▁( He inkel ▁HD ▁ 1 9 ) ▁as ▁a ▁f ighter ▁with ▁p onto ons . ▁That ▁delivery ▁came ▁to ▁be ▁the ▁last ▁license ▁built ▁aircraft ▁by ▁Svens ka ▁A ero . ▁ ▁In ▁the ▁mid - 1 9 2 0 s , ▁Svens ka ▁A ero ▁created ▁their ▁own ▁design ▁department ▁to ▁be ▁able ▁to ▁make ▁their ▁own ▁aircraft ▁models . ▁S ven ▁Bl om berg , ▁earlier ▁employed ▁by ▁He inkel ▁Flug zeug werke , ▁was ▁h ired ▁as ▁head ▁of ▁design . ▁In ▁ 1 9 3 0 , ▁he ▁was ▁joined ▁by ▁Anders ▁Johan ▁Anders son ▁from ▁Mess ersch mitt . ▁Despite ▁that , ▁Svens ka ▁A ero ▁designed ▁and ▁made ▁six ▁different ▁models ▁on ▁their ▁own . ▁The ▁manufact uring ▁was ▁not ▁the ▁success ▁B ück er ▁counted ▁on , ▁as ▁the ▁air force ▁was ▁only ▁interested ▁in ▁bu ying ▁pro tot ypes ▁and ▁then ▁building ▁them ▁themselves ▁in ▁their ▁work sh ops ▁T DS ▁and ▁CF M . ▁This ▁led ▁to ▁financial ▁problems ▁for ▁the ▁company . ▁In ▁ 1 9 3 2 , ▁B ück er ▁decided ▁to ▁sell ▁the ▁company ▁with ▁staff ▁to ▁AS J A ▁for ▁ 2 5 0 , 0 0 0 ▁SE K . ▁After ▁the ▁company ▁had ▁been ▁sold , ▁B ück er ▁returned ▁to ▁Germany ▁and ▁started ▁B ück er ▁Flug zeug bau ; ▁A . ▁J .