FSX Native? FSX certified? Exported as per SDK? Red Rag... I know, I know... 
Edited to save the innocent...
Now I don't know about this helicopter, and as a helicopter fan I place the huey high on my list of "like to haves" because it is a great looker. So to pose the "FSX Compatibility" question properly I simply ask: "Does this addon have the minimum content of FSX conform textures to allow painters full and free options to paint it, add dents where they want and to make specular changes?"
A yes here will increase my desire to own this.
A no simply means that it is not fully FSX.
If it don't do what ACES default planes do, it ain't conform!

Edited to save the innocent...
Now I don't know about this helicopter, and as a helicopter fan I place the huey high on my list of "like to haves" because it is a great looker. So to pose the "FSX Compatibility" question properly I simply ask: "Does this addon have the minimum content of FSX conform textures to allow painters full and free options to paint it, add dents where they want and to make specular changes?"
A yes here will increase my desire to own this.
A no simply means that it is not fully FSX.
If it don't do what ACES default planes do, it ain't conform!