AFM
Have a look at the Airplane Flight Manual for that particular
aircraft.
Interesting, too, are the abnormals related to Low Viz....
and the associated actions....This, also, found in the AFM.
Of course, you have various sources of information....for
example, your company's SOPs, the Airbus FCOMs, the
Airbus FCTM, the aircraft's AFM..... Take the most
conservative, most restrictive of all.....
I've seen the AFM be more restrictive than the company
SOP....relative to some issues. In that case, you need to
respect the AFM....and, notify someone in the training
department of this situation.
Fly safe,
PantLoad