Interesting question. Here is what I found from looking on the FAA and AMA websites. "Option #1. Fly in accordance with the Special Rule for Model Aircraft (Public Law 112-95 Section 336). Under this rule, operators must: Fly for hobby or recreational purposes only Follow a community-based set of safety guidelines Fly the UAS within visual line-of-sight Give way to manned aircraft Provide prior notification to the airport and air traffic control tower, if o