JFP, it's absolutely correct that RVR is dependent on the approach & lightning system installed. However with the new EU OPS WX minima concept the law maker has standardized & categorized the approach lights systems and adjusted mininas accordantly. RVR 550 CAT I can only be authorized for CAT I approach operations to runways with FALS, TDZ and CL and with DH of 200ft therefore operator may use RVR 125 for CAT I landing. Operator may not be authorized to conduct LVTO with RVR 125 but as we saw earlier may use RVR 125 to perform manual rollout on a CAT I approach provided RWY lightning requirements are met. On the other hand, RVR 75 M LVTO approval doesn't constitute approval to use 75 for the MID on CAT I approach as the ILS system doesn't fullfil the stringent CAT II/III ground facilities requirements. In case TDZ and/ or CL lights aren't installed or inoperative RVR minima is raised to 750M.
Well, I wish it was somewhat easier for the ordinary pilot on line kinda push the button is see what you can or can't do thing.
