Well, as I'm sure you're aware, to get the MRT5 at all you'll need a license.
And one reason the MRT5 was added into LFS in the first place was that McGill could get some simulation testing performed with LFS, this was one such creation, a potential prototype of the MRT6 IIRC.
In the end McGill decided an undertray was enough and wings weren't needed, so they neither exist in real life or any public version of the game (hence the wings aren't connected).
Since this isn't a mod I'll move this to general for those have haven't seen the screeny.