His dudeness I would like to follow up on your comment as you stated
“So the last RVR was 500m, 550m required. Is 50m so much of a difference that one has to crash? Especially with a CAT II lighting available? Which is a hell of a difference vs. a CAT I with standard lighting. “
There is a big difference with CAT I virus Cat II lighting system.
On a typical approach you cross the threshold at 50feet if you’re on the glide slope. The Decision Altitude on a CAT II is 100 feet.
So put yourself at 50 feet over that threshold and just a few nano seconds before that is 100 feet, which is the CAT II DA.
Your CAT 1 minima is 200 feet, about .7 of a NM.
Secondly you mentioned above is 50 meter that much of a difference? Well not really, But that’s not the point here.
The point is it’s a legal Minimum and Minima is not there for pilots to Bust it!!