Newps,

To ATC? Nuthin' I wouldn't know if you had one.


Ah, the broad view of the American ;-)

In Europe, Mode S equipment is becoming mandatory solely for ATC
reasons. There is no TIS here. ATC stations with the proper equipment
can do "selective" calls (hence mode S) interrogating only specific
aircraft. This leads to less congestion on the secondary radar
frequency, which, Eurocontrol tells us, is a serious problem with Mode
A/C. They claim to be running out of transponder codes, for example.
More info via google...

--
Thomas Borchert (EDDH)