I'd love for someone who's in the industry or an actual pilot to comment on this because I'm frankly not sure about what common scope AFBs have on commercial ai

I'd love for someone who's in the industry or an actual pilot to comment on this because I'm frankly not sure about what common scope AFBs have on commercial airliners, and what the backup procedures are if they fail. For private pilots, I know bringing an iPad up is common these days, but I think (and sure hope) commercial flight is a lot more risk averse and slow to adopt these things without thorough procedure.