Andrew Gideon wrote:
On Sun, 25 Jun 2006 20:22:33 -0400, Ron Natalie wrote:

Transponders are still required because ATC is ignorant about ADS-B and so
is TCAS.

But only mode C? That is, in an ADS-B world there's no need to upgrade to
mode S?

- Andrew

My crystal ball is cloudy as to whether the FAA is going to continue
to take the political pressure and graft that led to the disaster of
Mode S and TCAS to begin with.