▁the ▁first ▁b iod ies el ▁locomot ive ▁to ▁its ▁all - ste am ▁locomot ive ▁fleet . ▁The ▁fleet ▁has ▁clim bed ▁up ▁the ▁western ▁s lop es ▁of ▁Mount ▁Washington ▁in ▁New ▁Ham pshire ▁since ▁ 1 8 6 8 ▁with ▁a ▁peak ▁vertical ▁clim b ▁of ▁ 3 7 . 4 ▁degrees . ▁ ▁On ▁ 8 ▁July ▁ 2 0 1 4 , ▁the ▁then ▁Indian ▁Railway ▁Minister ▁D . V . ▁Sad an anda ▁G ow da ▁announced ▁in ▁Railway ▁Bud get ▁that ▁ 5 % ▁bio - d ies el ▁will ▁be ▁used ▁in ▁Indian ▁Rail ways ' ▁Dies el ▁Eng ines . ▁ ▁A ircraft ▁use ▁A ▁test ▁flight ▁has ▁been ▁performed ▁by ▁a ▁Czech ▁jet ▁aircraft ▁completely ▁power ed ▁on ▁b iod ies el . ▁Other ▁recent ▁jet ▁fl ights ▁using ▁bio f uel , ▁however , ▁have ▁been ▁using ▁other ▁types ▁of ▁renew able ▁fu els . ▁ ▁On ▁November ▁ 7 , ▁ 2 0 1 1 ▁United ▁Airlines ▁fle w ▁the ▁world ' s ▁first ▁commercial ▁av iation ▁flight ▁on ▁a ▁micro b ial ly ▁derived ▁bio f uel ▁using ▁Sol aj et ™ , ▁Sol az yme ' s ▁alg ae - der ived ▁renew able ▁jet ▁fuel . ▁The ▁E co - sk ies ▁Bo eing ▁ 7 3 7 - 8 0 0 ▁plane ▁was ▁fue led ▁with ▁ 4 0 ▁percent ▁Sol aj et ▁and ▁ 6 0 ▁percent ▁pet role um - der ived ▁jet ▁fuel .