Chilli...
Sorry mate, not trying to teach you to suck eggs.......
I have never been told during my training, nor do any of my fellow instructors advocate setting 7700 as a first or early action...... Sorry, but from my perspective D&D (great fella's, sterling service) are not at the top of the list of 'Things to do when your lost' I teach.....
If you're 50 miles away from where you should be then, I'm afraid, it's refresher training for you when you land!
DD