737NG: Flying away of the selected altitude while in VS mode
Hi
I would like to ask you about the VS mode in the 737NG.
I know that in the MD-80 family it is possible to do the following:
Fly at 3000 feet in ALT HOLD and SPD mode. After that you can change the altitude selector from 3000 to 4000 and you can engage VS mode. After VS mode is engaged you can now fly away of the selected altitude (4000). I mean you can start a descent from 3000 feet while in VS mode. This is a good option for visual approaches, where you want to fly with AP on, but you don’t want to reach any special altitude.
I read that it’s an option of the 737NG as well.
Could someone tell me if this is a real option in the real aircraft?
If so, does this option have an altitude limit? I mean, could be possible to fly away of the selected altitude while in VS mode in high levels, for example above FL300?
Let me know if you need more details
Thanks
Alejandro