Originally Posted by
Icarus2001
Regulation would be which aircraft MUST have it fitted, which models are acceptable, which airspace is unavailable without it on board...
Well that will only take ten years to figure out......
See and avoid has been proven to be unreliable time and time again if you don’t know an aircraft is there in the first place. ADSB is an ideal supplement to that principle. Having operated in high intensity flying environments with and without it, in my opinion it is a stone-cold no brainer.