Issi Noho: My comment was in relation to your first post, which seemed to be..not correct. Sorry.
As for Sarah:
So, I have a problem with an SOP, namely to apply 50 RA minima for CATIIIa approaches. I am then honest enough to admit that I have a problem with that, because I thought it was wrong. This low vis stuff is a quite complex matter, and I am sure you have a couple of holes in your knowledge too. F.ex. can you continue a CATII if TDZ-lighting fails? What is required RVR for 2. and 3. segment of rwy? Distance between rwy edge lights CATIII? I could go on and on...you will eventually get some of these wrong..Got it?