Trqnsponder
I have never flown an airliner, and I can't remember any corprate jet where you had to switch the transponder to standby before changing codes.
Some corporate jets actually have a control wheel button that changes the squawk to 7700 if pushed.
Not saying some don't require this, just none I've seen. Don't mean to sound rude.
Last edited by Old Boeing Driver; 12th Mar 2014 at 00:43.
Reason: Darn...spelling again