Just to remind us. From an A320 FCOM, (might be out of date):
VLS : Lowest Selectable Speed.
Represented by the top of an amber strip along the airspeed scale on the PFD.
Computed by the FAC, based on aerodynamic data, and corresponds to 1.13 VS during
takeoff, or following a touch and go.
Becomes 1.23 VS, after retraction of one step of flaps.
Becomes 1.28 VS, when in clean configuration.
(my bold)
. i.e. VLS is a certain margin above the computed stall speed, so not a speed you want to be below.
Interestingly:
Note:The AP/FD TCAS mode is speed protected, i.e. it ensures that the aircraft speed remains between VLS- 5 kt and Vmax.
@sonicbum, Nice tip on pitching up for go-around
Wish I had thought of that myself.