You seem to forget that, since mode S, big brother is watching us. Not a big job to check the logs and verify the status of each plane that has been inside one's airspace.

BEagle referred to a jet display team being refused entry to Dutch airspace, so maybe not such a good idea.

Just to avoid confusion - when you say Annex 2 - I presume you really mean aircraft without an Certificate of Airworthiness? You can be Annex 2 and have a CofA. If you have a CofA you can fly pretty much everywhere without express permission (by ICAO convention).

At least - that's what I was taught!

(eg - SA Bulldogs are Annex 2 but can be CofA or Permit, the Permit ones aren't covered by ICAO therefore they need special permission)

My personal problem is with UK registered Annex II gliders which have CofA's issued by the BGA. There are also lot of (mainly Slingsby-built) BGA reg gliders in the Netherlands which look as if they are to be grounded under this Dutch decree as the Dutch refuse to accept them onto their registers