Originally Posted by
sonicbum
It does not make any sense to point the altitude on the FCU ; Airbus callout is FL XXX blue (or magenta in case). Pointing the FCU is only half of the story and in case of an alt constraint lower than the FCU altitude it is actually misleading. What the airplane will do is only dictated by the FMA, all other data is almost useless.
The case with altitude constraints is the only case where I’ve seen the PFD not match the FCU (by design).
This situation is where I actually find it useful to point to the FCU. ATC clears you to 6000, and the FCU reflects that clearance limit, even though the PFD shows 12,100 in pink.