Originally Posted by H2O_Goalie
I think you'd face 2 issues trying to use a standard XM radio on the plane...powering it could be difficult and placing the antenna (unless you had a window seat) would not be easy.
IMO, if you can get a GPS receiver to work on a plane you should be able to get XM to work on a plane. I don't know the relative frequencies but I suspect they're not much different.