Originally Posted by
_Sundown_
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' ?
We continue. There seems to be different methods on what to do. But 50' RA can be pre-set and blanked on my aircraft type. So, if this happens prior to the FAF, reset the appropriate switches to 50' RA. If it happens beyond the FAF, the captain will simply say something such as "Fail-passive, RA 50, call 100 to minimums and minimums" with no switches being moved.
So all the F/O has to do for this is look at the RA and make the appropriate calls at 150 and 50 feet.