▁won ▁the ▁£ 5 0 0 ▁prize , ▁only ▁for ▁Harry ▁Haw ker ▁to ▁set ▁a ▁longer ▁time ▁just ▁an ▁hour ▁later . ▁This ▁was ▁the ▁first ▁of ▁a ▁series ▁of ▁compet itive ▁near ▁miss es . ▁ ▁Ray n ham ▁did ▁much ▁of ▁the ▁test ▁and ▁development ▁flying ▁on ▁the ▁Av ro ▁ 5 0 4 . ▁He ▁fle w ▁it ▁for ▁the ▁first ▁time ▁on ▁ 1 8 ▁September ▁ 1 9 1 3 ▁then , ▁two ▁days ▁later ▁gained ▁fourth ▁place ▁in ▁the ▁second ▁Aer ial ▁Derby ▁at ▁Hend on , ▁aver aging ▁ 6 6 . 5   m ph ▁( 1 0 7   km h ). ▁On ▁ 2 9 ▁September ▁Av ro ▁respond ed ▁to ▁Black burn ▁A ircraft ' s ▁challenge ▁to ▁a ▁ 1 0 0 - mile ▁race ▁around ▁Le eds , ▁York ▁and ▁other ▁northern ▁towns , ▁p itting ▁the ▁ 5 0 4 ▁prototype ▁against ▁the ▁Black burn ▁Type ▁I ▁pil oted ▁by ▁Harold ▁Black burn . ▁ ▁This ▁race , ▁known ▁as ▁the ▁Wars ▁of ▁the ▁Ros es , ▁took ▁place ▁on ▁ 2 ▁October ▁and ▁was ▁won ▁by ▁the ▁York ist ▁Black burn , ▁after ▁the ▁Lan cast rian ▁Av ro ▁had ▁to ▁put ▁down ▁in ▁bad ▁weather . ▁In ▁a ▁new sw orth y ▁flight ▁on ▁ 1 4 ▁February ▁ 1 9 1 4 , ▁Ray n ham ▁fle w ▁the ▁prototype ▁ 5 0 4 ▁to ▁a ▁height ▁of ▁ 1 5 , 0 0 0