Stefan wrote:

Bob Noel schrieb:

I know the advantages from an ATC POV, but what is the advantage for
the aircraft owner?

To be allowed to fly in controlled airspace at all? In Europe, Mode S
will be mandated, because ATC claims Mode C reaches its limits. This
means in the forseeable futu No Mode S, no fly in controlled airspace.

Stefan

We will see. Such a mandate will meet considerable opposition. Same
as GA user fees. Heck, the FAA has not even started any sort of 406
MHh ELT mandate to my knowledge. (USA applicability)

Ron Lee