Here's a summary with less tech talk.
http://www.privatewifi.com/flying-na...-is-so-unsafe/

And of course, you can always trust the TSA, Air Line Pilots Association and alike to overreact and probably find a way to eventually ban the whole thing [or demand access to the content of all communications]. Doesn't that just give you a warm fuzzy.
http://www.ajc.com/news/nation-world...ks-743309.html