Very nice thread guys...
Let me ask you something. For B-737 Ng, the FCTM states that, for fail operational autoland approaches, above Alert Height if a mode change occurs e.g. from Land 3 to Land 2 or to No Autoland, set new minima or go-around. At least I understand it that way.
Pretend that, for a CatIII B approach after self test Land 3 announciated but above 200' AH it changed to LAND 2, shall we set a new minima e.g. CAT III A minima of 50' ?
Thank you veryu much indeed.