West Coast, yes, the UK has filed differences. Not many, but one or two. All member states are quite entitled to file differences, that is the way the system works so that all users of it know what to expect, and what different phrases actually mean when heard depending on where they operate around the world.
The point I am making is simply this. In the US the phraseology is completely non standard to that agreed in the convention and bears no relationship to any differences filed. Whichever way you look at it, and as painful as it may feel, your system of not complying with agreed conventions increases the likelihood of confusion, especially when operators whose native language is not English have to disseminate slang. Confusion in a busy ATC environment is not what any of us want.
Put simply, if you sign up and agree to a convention, why not honour it?
Last edited by deefer dog; 11th Jul 2013 at 23:39.