Thomas Borchert wrote:
Chris,

Once you enter the code,
is that it, or do you then hit the IDENT key, even if not requested?


The AIM (and the German AIP, for that matter) is crystal clear on that:
NEVER hit ident unless the controller tells you to. Also, do not switch
the transponder to standby when changing codes.

Hmm... I was taught otherwise. The idea was that you might cause more
trouble as you rolled through a series of codes, some of which might be
in use and cause more confusion. Better to lose your secondary for the
30 seconds it takes to make the switch.

-cwk.