3 ms·How?by middleclick 13y agoHow?hemancuso 13y agohttp://en.wikipedia.org/wiki/Global_Positioning_System http://en.wikipedia.org/wiki/Global_Positioning_Systemceejayoz 13y agoGPS autopilot following a flight plan. Zoom in a little and you'll see the as-filed flight plan in a light blue dashed line.