Originally Posted by
beached az
"Rather than having different regulations for each region, can't they all merge and have a common system for licensing and requirements?"
I thought there was, it's called ICAO
ICAO only makes recommendations (SARPS). It’s up to individual states to implement them. Few states (if any) simply adopt the SARPS “as is”. Hence the ICAO differences section in Jepps. Australia is one of the most non-compliant ICAO states. Just check out the size of Australia’s differences section. One big difference between ICAO and Australia is the ICAO recommendation for a mandatory retirement age of 65.
I doubt that that there will ever be a uniform set of rules to cover aviation law just as there will never be common international laws to cover motor vehicle driving. Some countries will choose to drive on the right and others will drive on the left. That’s just how it is.