Squawk 7000
Hi all,
It used to be that whenever I would leave a LARS or FIS basic service switching to another frequency the controller used to say "Squawk 7000". In the last year or so they seem to have switched to saying "Squawk on security" (or that's what I think they're saying). What does this new Squawk on security mean? It doesn't really matter to me because I just press VFR on my transponder which switches is to 7000 anyway but I wanted to understand in case I'm not missing anything. Can anyone clarify?