Kykweer you pretty much summed it all up.....as clear as day light.....Cavorting cheetah...please tell me where you find a 370 mterer RVR, I can't find it anywhere maybe you can tell me what PART section and reference....as far as the law goes its 300 mts......for a CAT A,B,C with a DH of 100ft - 120ft for CAT II Approaches....