▁fus el age , ▁wing ▁and ▁tail ▁surfaces ▁all ▁covered ▁in ▁pre - se wn ▁D ac ron ▁en velop es , ▁which ▁short en ▁construction ▁time . ▁The ▁reported ▁construction ▁time ▁is ▁ 2 1 1 ▁man - h ours . ▁ ▁The ▁Co y ote ▁S - 4 ▁has ▁conventional ▁landing ▁g ear , ▁while ▁the ▁S - 5 ▁has ▁tr icy cle ▁g ear . ▁Both ▁can ▁be ▁equ ipped ▁with ▁flo ats ▁and ▁sk is . ▁The ▁original ▁basic ▁engine ▁was ▁the ▁Rot ax ▁ 2 7 7 ▁of ▁, ▁with ▁the ▁Rot ax ▁ 4 4 7 ▁of ▁ ▁and ▁the ▁Rot ax ▁ 5 0 3 ▁of ▁ ▁available ▁later ▁as ▁options . ▁ ▁The ▁Co y ote ▁II ▁two - se ater ▁was ▁later ▁developed ▁from ▁the ▁S - 5 . ▁ ▁Oper ational ▁history ▁There ▁were ▁ 2 4 6 ▁S - 4 s ▁and ▁S - 5 s ▁built ▁and ▁flow n ▁by ▁December ▁ 1 9 9 8 . ▁ ▁Many ▁S - 4 s ▁are ▁flow n ▁as ▁un register ed ▁ul tr al ights ▁in ▁the ▁US , ▁but ▁in ▁November ▁ 2 0 1 0 ▁there ▁were ▁four ▁registered ▁along ▁with ▁four ▁S - 5 s . ▁In ▁November ▁ 2 0 1 0 ▁there ▁were ▁four ▁S - 4 s ▁and ▁one ▁S - 5 ▁registered ▁in ▁Canada . ▁In ▁December ▁ 2 0 1 0 ▁there ▁were ▁nine ▁S - 4 s ▁and ▁three ▁S - 5 s