Can you point me to that "Edge" plane?
I believe this is the one Zlin is talking about. Maybe he will confirm.
http://www.youtube.com/watch?v=JZD3LkBX-bM
Sorry Guys, I really can't remember where I found it.I think the author was a german guy... But as far as I remember, this little stuff works together only with that Edge-540. But I'm not sure in that.
Zlin, is this the one you're referring to?
http://www.sim-outhouse.com/sohforums/showthread.php?29037-HU-Edge-540-Download-at-simviation

The use of a custom fresnel ramp and envmap seem to be giving a quite outstanding lighting effect on the plane.