I get this question all the time from newcomers, so I'll answer it here as we build a proper FAQ: Q: What's the difference between a RC plane and a UAV? And why doesn't the AMA allow UAVs on its fields? A: The generally-agreed distinction is that UAVs have the capacity for autonomous flight and navigation. A RC plane becomes a UAV with the addition of an autopilot. The AMA doesn't allow UAVs b…