I think this explains it.. .. .<a href="http://www.caa.co.uk/publications/docs/srg_atsin_8_phraseology_associated_with_clearances_invol" target="_blank">http://www.caa.co.uk/publications/docs/srg_atsin_8_phraseology_associated_with_clearances_invol</a> ving_fl_100_200.pdf]. .. .Edited because I can't make it a link.. . . . <small>[ 06 March 2002, 17:41: Message edited by: Erm OK probably ]</small>