I also give the ILS flute a wide berth which,to me at least, seems to be a simple safety decision. But I have to admit that I have generally thought of it as an approach path although aircraft will certainly depart via the indicated path. obviously the flute starts at ground level, but what is the height (AAL) of the outer extremity? That info seems to be the most useful bit for the purposes of planning a flight which takes me close to an ILS equipped airfield. Perhaps somebody could point us to a diagamatic profile of the ILS path on the web.