Originally Posted by Max Angle
On the two brand new A319s we have just had delivered all the PFD displayed speeds (green dot, vls etc etc.) are now generated by the FMGS rather than the FACs as before.
but then........................
Originally Posted by Max Angle
The characteristic speeds displayed on the PFD are computed by the Flight Augmentation Computer (FAC), according to the FMS weight data (for PFD/MCDU display consistency and accuracy purposes), and aerodynamic data as a backup.
Now I'm confused!