I live in London <a href=" http://cardenoftucson.org/buy-propecia-1mg-uk.pptx ">purchase propecia uk </a> "One of the principles of the Chicago Convention system is that commercial carriers have the right of overflight, or the right to do things like stop for fuel, without seeking permission from the country over which they are flying," said aviation lawyer Simon Phippard of UK-based law firm Bird & Bird.