The ANO isn't an Act of Parliament, its an Order in Council - administrative law defining the means of complying with the terms of the Civil Aviation Act; the enabling act ratifying the UK's signature to the Chicago Convention.
As a sovereign state, a EU directive or regulation that required a change to the Civil Aviation Act itself would need to be enacted by an Act of Parliament.
A EU Regulation from the European Parliament - a democratic body to which we elect European Members of Parliament - overrules mere administrative law.
Last edited by Blacksheep; 7th Jan 2005 at 15:54.