[joezydeco]

Avionics is the area that is the least tolerant of radical redesigns in human interfaces. This FMC form factor has been around a long time. There are newer ACARS/FMC systems that have an actual QWERTY keyboard.

https://www.aviationtoday.com/2016/04/27/spectralux-launches...

Remember, also, that not all countries use QWERTY. France, one of the homes of Airbus, uses AZERTY. What should they do about their keyboards?

[cccbbbaaa]

Use bépo, of course! More seriously, Airbus uses qwerty since at least the A380. This means that the A350 and the A330, two aircrafts that share a type rating, do not use the same layout.