I know, but there are always exceptions to the JARs, e.g. I believe airspace still significantly differs from one EU country to another.
Mhhhh, I don't know but I don't think so. Class a,b,c,d,e, etc is pretty much the same I thought. Just countries locate them differently.
You are right though, JAR OPS is standard for all countries, however, beside JAR's countries may have their own penal laws which may be more stringent than the JAR's.
You asked for a reference, I provided, however, being trained myself in the states, I admit, trying to make sense of the ever changing JAR, now being called EU OPS and the local regulations is a challenge.
Greetings
Reflecting on what I just wrote, I apologise, you are right! The rules don't always make sense. Your example of airspace is correct. The JAR's are clear but then every country comes with exceptions which you have to dig out from the jeppesen, same I guess when it comes to other regulations and nations having different penal codes. As far as dutch alcohol regulations, I guess they do follow the JAR's. At least my company manual states the same as the regs I posted.