I'm not an Airbus man, but this or similar topic has been discussed previously in general terms. It is also a 'discussion point' on B737NG family between various training dept's whether to switch off FD's when visual on NPA after a VNAV/LNAV or RNAV approach. My curiosity is why do you need an FD at low level when visual?
The approval to use FD for NPA below minima is quite new but is also only applicable under certain conditions like eg for Final App, Final must be aligned with runway track as otherwise the guidance won’t be relevant and keeping in mind that below minima visual references are the primary references for landing like for any kind of approach...
