Sorry Tribekey I don't see what you're getting at. To me, duty of care means that if I'm giving a basic service without radar and a guys says that he wants to route to Henley and I know that 50 other people have said that they're going to Henley, I'll tell him to keep a good lookout. If I'm giving the same service, but I've got radar, then if I see someone on a collision course with something else, then I'll tell him. And no, that's not someone who's going to get within 5nms and 3000ft, that's 500ft or less and on a collision course. Fairly obvious really.