▁registered ▁in ▁the ▁United ▁Kingdom . ▁ ▁Vari ants ▁S - 2 ▁Pro totype ▁first ▁flow n ▁in ▁March ▁ 1 9 8 3 ▁S - 3 ▁Im pro ved ▁prototype ▁flow n ▁in ▁September ▁ 1 9 8 3 , ▁entered ▁production ▁as ▁the ▁S - 4 ▁S - 4 ▁Con vent ional ▁landing ▁g ear ▁version ▁intended ▁as ▁a ▁F AR ▁ 1 0 3 ▁Ul tr al ight ▁Ve h icles ▁comp li ant ▁design ▁when ▁equ ipped ▁with ▁the ▁standard ▁▁ ▁Rot ax ▁ 2 7 7 ▁engine . ▁No ▁longer ▁in ▁production . ▁S - 5 ▁Tr icy cle ▁landing ▁g ear ▁version ▁for ▁the ▁US ▁Ex perimental ▁amateur - built ▁category ▁with ▁options ▁such ▁as ▁bra kes . ▁Eng ines ▁include ▁Rot ax ▁ 4 4 7 ▁of ▁ ▁and ▁the ▁Rot ax ▁ 5 0 3 ▁of ▁. ▁No ▁longer ▁in ▁production . ▁ ▁Spec ifications ▁( S - 5 ) ▁ ▁See ▁also ▁ ▁References ▁ ▁External ▁links ▁ ▁Ph oto ▁of ▁an ▁S - 4 ▁Co y ote ▁Ph oto ▁of ▁an ▁S - 5 ▁Co y ote ▁ ▁Category : 1 9 8 0 s ▁United ▁States ▁civil ▁utility ▁aircraft ▁Category : Home built ▁aircraft ▁S - 0 0 4 ▁Co y ote ▁Category : Single - eng ined ▁tra ctor ▁aircraft ▁Category : High - wing ▁aircraft ▁Category : A ircraft ▁first ▁flow n ▁in ▁ 1 9 8 3 <0x0A> </s> ▁Der am as ▁j as oda ▁is ▁a ▁but ter