Unfortunately some of the stuff in hobby shops could be used in a malicious way. Imagine a FPV rigged up to a 120" wingspan rc plane strapped with explosives. You'd have a home made missile.
So I can see an unusual interest being zero interest and then all of a sudden showing up at a hobby store and asking random questions: "how far can this fly? How much could it carry? Is it easy to take off?" Etc.
Just playing some devils advocate here. It's always concerned me that there isn't more regulation around the rc planes. Really more the larger stuff. I like the level certification system in rocketry. I think something like that in planes could go a long way.
A long way to what? Fixing a "problem" that isn't? That's the sort of thinking that gets ridiculous levels of regulation for no real benefit for a non-problem. You can "imagine" all kinds of problems for
all kinds of things that can be turned deadly. Then, some rare event will occur that gets the attention of a mass media always looking for out-of-the-ordinary sensational events and there'll be a call to regulate, gladly accepted by huge bureaucracies trying to prove their "value," ending up with something that won't even fix a statistically irrelevant non-problem because their isn't a
practical fix for the "problem" in the first place.
Yes, very large rocket motors in an unguided ballistic-flight vehicle have a significant potential to cause fires or move too quickly for people to get out of their way if they are unstable. However, how many terrorist events or fatalities occurred with them prior to the current certification requirements? How many fatalities are there every year due to RC aircraft in the US? I know of one stat related to the use of very popular and
powerful RC helicopters used for "3D" stunt flying turning large, deadly blades at typically low altitudes - TWO deaths
worldwide in 2013.
Now, I can agree that UAV/FPV ("drone") RC aircraft operation
beyond visual range should have
safety standards imposed upon them primarily because of their potential interactions with
manned aircraft. The FAA will be working on that in the near term.