It has all of the US on it but you need to have a connection to download what you need and it has to be downloaded before you loose the signal. So you will need whatever you are going to use before you go flying. I plan to just download everything along the route so that I have it. Then I can delete it when I am done if I need the space. I also plan to tether it to my droid so that I can use it when I don't have a wifi spot available.