This is probably my first helicopter i ever modelled, don't know why i didn't post this a while ago but here it is.
You can use it for the main subject of your animation to it just being in the back of animations it is really up to you.
This is just a low poly model with rough UV material editing.
You are going to have to add your own glass shader to the windows because for some reason, it does not export that correctly. But hope you enjoy this model.
Let me know if there are any problems with this.
Will provide the fbx.