WHY would UK's airport need to be certified by EU, by other countries to show to be safe? That is so ridiculous to begin with. Why is it UK cannot certify its own airports? What if UK never joined EU? What, its airports would never be certified as safe? What about USA, Canada, Japan who are never part of EU? Their airports are not safe? UK, when it's within EU, its airports are all "certified safe", all of sudden, 1 minute after it leaves EU, its airports are all unsafe? LOL This just shows how ludicrous this EU situation is. What if UK's airports are not "certified safe" after Brexit? What airplanes would never land in UK? For those people who need to go to UK would have to land in Ireland or France and then what take a train or bus or a ferry to cross the English channel to go to UK? LOL
If th is is really true, this just shows one more reason why leaving EU is such a good idea the way how draconian EU is that it tries to control every single aspect of your life and forces all of its members to depend on it just to operate something so basic as an airport.
Every single country that has air travel to the U.S. has signed an agreement with the U.S. to allow that and has a set of protocols, standards, and enforcement mechanisms that the U.S. agrees are adequate as well as bilateral obligations between the two entities. And vice versa for countries with flights from the U.S. Until now the EU has performed this function for the U.K. As of Brexit, they no longer fall under the EU's protocols, standards, and enforcement mechanisms. Until the U.S. and the U.K., and Japan and the U.K., and Canada and the U.K..... and every other country that previously set up an agreement with the EU, does so with the U.K. they are not covered by any agreement to operate in those countries.
It is silly, 30 seconds after Brexit. It's silly 5 minutes and maybe even 5 days after Brexit. But what about 30 days, when things may or may not have changed in the U.K., who the fuck knows because there are no protocols or standards or enforcement mechanisms, no obligations, no obligations, no nothing.
The world is highly interconnected and it is able to be highly interconnected because of a huge web of bilateral and multilateral agreements between nations. No matter if you like that or not, its reality. I run a subsidiary in Canada from the U.S., and even in that I rely on a whole slew of agreements between the U.S. and Canada that allow me to operate there without having to obtain Canadian specific licenses, certifications, training.... If all those were to go away tomorrow it would have a huge impact on my small little operation, as will happen on a much greater scale with the no deal Brexit you all seem to be headed for. Again, I'm not trying to convince you of anything, this is simply reality.
And yes, if Brexit happened tomorrow aircraft originating in the U.K. would not be able to land in the Europe, or almost anywhere else until bilateral agreements had been arranged (it looks like they've already done so for the U.S.). Ryanair has formally warned investors of a “distinct possibility” that flights between the UK and the EU could be grounded from the moment of Brexit “for an unknown period of time”. I'm not making this shit up, it's the reality of how the world works.