▁The ▁aircraft ▁was ▁a ▁par as ol ▁mon op lane ▁of ▁all - met al ▁construction , ▁the ▁first ▁all ▁metal ▁P ote z ▁aircraft , ▁with ▁a ▁tail w heel ▁under car riage . ▁It ▁was ▁power ed ▁by ▁a ▁His p ano - Su iza ▁ 1 2 H ▁engine ▁of ▁ 5 8 0   b hp ▁( 4 3 3   k W ) ▁as ▁required ▁by ▁the ▁specification . ▁The ▁crew ▁of ▁two ▁sat ▁in ▁open , ▁tan dem ▁co ck p its , ▁with ▁the ▁observer ▁being ▁armed ▁with ▁two ▁Lewis ▁guns ▁on ▁a ▁ring ▁mount ing , ▁and ▁the ▁pilot ▁being ▁armed ▁with ▁a ▁single ▁synchron ised ▁Dar ne ▁machine ▁gun , ▁while ▁light ▁bomb s ▁could ▁be ▁carried ▁in ▁a ▁small ▁internal ▁bomb - bay ▁and ▁on ▁external ▁ra cks . ▁A ▁fixed ▁camera ▁was ▁fitted , ▁operating ▁through ▁a ▁h atch ▁in ▁the ▁fus el age ▁floor . ▁ ▁The ▁prototype ▁fle w ▁in ▁January ▁ 1 9 3 0 . ▁Although ▁the ▁B reg uet ▁ 2 7 ▁was ▁selected ▁as ▁the ▁winner ▁of ▁the ▁competition , ▁both ▁it ▁and ▁the ▁P ote z , ▁which ▁was ▁runner - up , ▁were ▁chosen ▁for ▁production . ▁Comp ared ▁to ▁the ▁P ote z ▁ 2 5 , ▁of ▁which ▁over ▁ 2 0 0 0 ▁were ▁ordered , ▁production ▁of ▁the ▁P ote z ▁ 3 9 ▁series ▁was ▁on ▁a ▁small ▁scale , ▁ 1 0 0 ▁P ote z ▁ 3