One reason why Autoland is mostly only used in low viz conditions is because that’s when it can perform the best since there’s mostly near zero wind in those conditions. Also, while planes have autopilot, it’s dumb, so you have to program it beforehand, and there’s definitely cases where it just doesn’t want to work right and you have to hand fly. While it is certainly useful as an aid to flying, as it flies better than pilots, it most certainly can go wrong and the pilot will have to take over in special or emergency senarios.

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