The mohawk and hummingbird both have 'MacroTextures' or '_mc' files which are image files including parts of the texture that wouldn't normally be changed in a re-texture. E.g. Engine parts, gloves
http://i.imgur.com/lWdNtN2.png
A project of mine trying to make it easier for new people to the arma 3 modding scene. I've create preprocessed photoshop files.
I currently have been chopping the files up by hand. I couldn't complete them all and it's imperfect.
These kind of files would be great for helicopters with all the small markings & details.