elles . ▁The ▁horizontal ▁tail ▁was ▁b rac ed . ▁It ▁was ▁power ed ▁by ▁two ▁ 1 4 0   hp ▁Sh vet so v ▁M - 1 1 F ▁radial ▁engines ▁driving ▁two - bl aded ▁wooden ▁prop ellers , ▁with ▁the ▁engine ▁installation ▁based ▁on ▁Y akov lev ' s ▁U T - 2 ▁primary ▁training ▁aircraft . ▁In ▁order ▁to ▁minim ise ▁the ▁use ▁of ▁scar ce ▁resources , ▁the ▁aircraft ' s ▁fuel ▁t anks ▁were ▁made ▁of ▁chemical - im pre gn ated ▁p lywood ▁rather ▁than ▁metal ▁or ▁rub ber . ▁Many ▁Y ak - 6 s ▁were ▁fitted ▁with ▁fixed ▁landing ▁g ear . ▁ ▁The ▁aircraft ▁appeared ▁in ▁two ▁versions , ▁one ▁as ▁a ▁transport ▁and ▁utility ▁aircraft ▁for ▁the ▁supply ▁of ▁part is ans , ▁transport ▁of ▁the ▁wounded , ▁and ▁for ▁l ia ison ▁and ▁cou rier ▁services . ▁ ▁It ▁could ▁accommod ate ▁two ▁crew ▁side - by - side ▁in ▁an ▁en closed ▁co ck pit ▁with ▁capacity ▁to ▁carry ▁four ▁passengers ▁or ▁ 5 0 0   kg ▁( 1 , 1 0 0   lb ) ▁or ▁cargo . ▁The ▁second ▁version ▁was ▁a ▁light ▁night ▁bom ber ▁( design ated ▁N BB ▁- ▁noch no y ▁bl iz h ni y ▁bomb ard iro v sh ch ik ▁- ▁Short ▁Range ▁Night ▁Bom ber ), ▁capable ▁of ▁carrying ▁up ▁to ▁ 5 0 0   kg ▁of ▁bomb s ▁on ▁ra cks ▁under ▁the ▁wing ▁centre ▁sections