As for the 777 and a 4 degree slope being unworkable because the autoland is only certified to 3.25 degrees......can't you hand fly that a/c and actually land it yourself or am I missing something
I think what people mean is that normal Cat III A,B ops is done with the autopilot engaged all the way to roll out (And I am talking in actual condition, not just for the Autoland practice requirement). So if the A/P is not certified then you lose your CAT III ability.