Garmin C330 In An Airplane?

I have a Garmin c330. It is nice when I am on trips in the car but I am also a pilot. I find it annoying that it follows the roads even when I am in the air. Is there any way I can get it to follow a straight line in an airplane? Do I need to download software or something to accomplish this? I appreciate your help. Thanks!

Share and Enjoy:
  • Digg
  • del.icio.us
  • Facebook
  • Google Bookmarks
  • MySpace
  • StumbleUpon
  • Technorati
  • Twitter