I wonder if there's a solution similar to experimental aeroplanes, e.g. a massive sticker which essentially says "THIS IS NOT A CERTIFIED PLANE, IT COULD BE DANGEROUS"
Yeah totally! That’s a path that regulators often take rather than banning something. It’s all part of the same root as I see it. Removing non-obvious dangers or turning them into obvious ones.
You’d still need to satisfy the requirement that they don’t pose a threat to non-occupants though. Pedestrian and bystander safety is a thing. Might be taken care of by limiting the max speed.
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Those planes are allowed to be flown for specific testing purposes only. You cannot fly passengers nor even cargo with them. And each flight crew member must have a very specific, essential role. You can't fly e.g. a tourist and call him "mission specialist" to get around the rules.
You’d still need to satisfy the requirement that they don’t pose a threat to non-occupants though. Pedestrian and bystander safety is a thing. Might be taken care of by limiting the max speed.
This post is known by the state of California to contain cancer causing elements.