Originally Posted by
pineteam
It does not if you use Vertical speed mode. You will have your target altitude Eg “ FL200” blue. But if you set the wrong vertical speed like VS + 1000 instead of Vs -1000 in a descent “ALT” Blue will never be displayed and altitude burst will occur and aircraft will keep climbing until the crew take actions. Happened many times. Thus I’m surprised some airlines train the crew not to read back the “ALT” on the FMA. This is definitely not Airbus SOP.
Id feel like the more relevant readout here is the V/S. Read the + or - properly and ALT blue starts to lose its necessity