Why do we switch the PNF's F/D on when flying visual,
I confess to being a B737NG guy, not B777, but I wonder if there re similarities. Firstly, is this a Boeing thing or a company SOP? If it's Boeing, then no idea: if company, then HOT is the source.
When a go-around is initiated, the FD will appear on both PFDs, regardless of the switch position. However, as soon as the first mode change occurs (LNAV or VNAV, most likely), the flight directors will disappear again if the switch is off. Thus, I imagine the PM's FD switch is turned on so that in the confusion of an unexpected go-around, someone will still have persistent FD guidance.
The first sentence is the same as B737NG, but any roll/pitch mode alteration from TOGA will cause FD pop-up bars to go AWOL. However, on NG if you switch both OFF then both ON you display FD in upper centre PFD with bars out of sight. Then on TOGA FD bars pop-up and DO NOT go AWOL at mode change. Is this a possibility on B777?