I am guessing those aerobatic airplanes are well maintained ( and enhanced = ) . I get a lump in my throat seeing the skill displayed. I wonder what t= he accident rate is for such a group. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .