I'm on the FAA site and am reviewing the FAQ: Unmanned Aircraft Systems (UAS) Frequently Asked Questions Look at the Q&A below Do I need approval from the FAA to fly a model aircraft for recreation or hobby? No, but your aircraft must be registered if it weighs more than 0.55 lbs. FAA guidance also says that model aircraft should be flown a sufficient distance from populated areas and full scale aircraft, should be kept within visual line of sight of the operator, should weigh under 55 lbs. unless certified by an aeromodeling community-based organization, and cannot be used for business purposes.1, 2 I note that in the one paragraph, they use the modifiers must, cannot, and should. I would think, then, that the only reasonable interpretation would be the plain meaning of these words, that is Must - you have to do that, and if you don't you could suffer penalties Cannot - you are not allowed to do that, and if you do you could suffer penalties Should - it is recommended that you do that, but if you don't there are no penalties. Why else would they use this language? Why don't they say that you must fly within visual line of site, etc.? I can only conclude that you don't have to, it's not against the law, but it is a good idea and is recommended. Can anyone confirm this? I know I and many others enjoy piloting their drones beyond visual line of site. Thanks.