This is a large list, I don't know if I should post them all in this thread.
The standard M60 uses 86 textures
The standard CH47 uses 109 textures
The standard Apache uses 67 textures.
There is a complete list of textures used for every standard model in OFP.
It is called the complete P3D Project, which was submitted to the Editors Depot some time ago, but I think it is still in the pending list at the moment.
The reason I said 'I think', is because it has fallen off the bottom of the list and I can't see it any more.
Alternatively, post your email address and I can send the relevant list, or complete project to you, whichever you wish.
Planck