lasernigel I know your question was addressed to Beagle but I'll answer as it did happen to me. I was Tanking in a Nimrod, from a Tristar, when just the sort of travelling wave that Beagle described developed. We weren't quick enough to break contact and the hose just ripped out the probe tip easy as anything! No particular consequences - not in the Nimrod, anyway. In fact one of the nice things about AAR was that it was about the only activity where you could damage HM aeroplanes with impunity!