from the illustrations, /Revolution__Helicopter__Corp/Mini-500

from the illustrations, /AviCopter/AC312-AC312

from the blog, /2017/01

from the illustrations, /Enstrom/Falcon-F28-F

from the illustrations, /Kawasaki/KH_4-KH_4

from the blog, /2016/04

from the blog, /2012/12

from the illustrations, /NHI/Caiman-NH90-TTH__RR_TM