LVOs are an individual state/operator authorization, so there will be variations.
For instance, the minimum CatIIIA minima my company operate to are 200M Touchdown, 125 midpoint, and Captains discretion as to whether a stop end RVR is even required, but with a minimum of 75m if he judges it is.
The 200m is required so that, from the 50' DH, enough of the runway can be seen to provide lateral guidance (3 consecutive runway lights) as roll out guidance is not guaranteed with CatIIIA..
Once on the runway, 125m is sufficient to keep straight (it is, after all, the same as the minimum CatC takeoff minima), and the assumption is you will be at low speed and only needing turn off guidance at the stop end (as you would if you were CatIIb, which has an absolute minima of 75m)
Yes, it's called "Minima" for a reason! It's JUST enough, but you can operate to it.
As to "I'm told", and "Thoughts", are you actually in an LVO authorised operation? if so, it sholud be in your manuals- no "Thinking' required!!
Last edited by Wizofoz; 10th Aug 2012 at 06:20.