Primary Flight Display Symbols
Flight Director Command Bars
The FD Command Bars are displayed when a flight director button is selected ON. On the ground, the flight director may be selected ON, but will not appear on the PFD until the thrust levers are moved to FLX or TO/GA.
If selected in flight, the flight director will engage in the current autopilot mode. If no autopilot is engaged, it will engage in the HDG-V/S or TRK-FPA mode, depending on the FCU selection.