Maybe very little other than the bigger and faster people being able to see you on TCAS and not running you over.
Maybe there could be a deal that the light GA people don't have to go Mode S if they do put current technology BI transponders in that don't have all the funky little logic glitches that the current system has to spend lots of time and software code to work around and that dumb's down the information provided to controllers?
[ 13 February 2002: Message edited by: Iron City ]</p>