The scandal with the MCAS though was in large part because Boeing went out of their way to hide the existence of this system to save their customers training co

The scandal with the MCAS though was in large part because Boeing went out of their way to hide the existence of this system to save their customers training costs, and therefore win more sales from existing 737 operators. On the contrary, Airbus, for instance, provide detailed guidance for what to do if either one, two or all three of a system like the ADIRS (Air Data Inertial Reference System) were to fail during a flight, even though that is extremely unlikely.