I agree with the point that "regulations" is meaningless by itself but I'm not sure what the alternative is. I tried to find other Stack sites that might have similar issues with regions and countries:
In aviation terms, that suggests the following ideas (hopefully there are more):
- Use country tags
- Use regulatory authority tags (FAA, EASA)
- Consider US/FAA a default that requires no tag
I find country tags quite attractive, because they can apply to more than just regulatory questions and would be useful for questions about common practices too: if the tag "US" is present, it would imply FAA/FAR/AIM etc. It also allows for the case where local rules take precedence (if such cases exist), e.g. if the UK has local aviation regulations that apply only in the UK, independent of EASA. If someone really wants to ask about EASA and not about one specific country then they can still tag it "EASA" instead of "UK", of course.
Authority tags seem more specific, but it's early days and although all the questions so far seem to fall into US (FAA) or Europe (EASA), the rest of the world exists too and there are numerous "CAA" authorities out there. Would we have "CAA-Singapore", "CAA-SouthAfrica" etc.?
I don't like the idea of treating the US as a default at all, simply because it promotes a US focus that might drive other decisions to the detriment of making this a globally useful site.