Originally Posted by de facto
I havent read them in such details to know,but obviously the more mature the airline the more chance mistakes have been spotted and corrected.
In general and for large operators,as i mentionned,those manuals have been through some obvious thoughts and checked by the relevant authorities.
That's one way to look at it. Another way might be that the more mature the airline, the more opportunity there is for a bunch of decrepit fossils who haven't even seen a simulator, let alone an actual aircraft, in decades and decades to write pages upon pages of unadulterated nonsense, which their similarly decrepit buddies at the "relevant authorities" will gladly sign off.
True story.