I`ve looked for this information in a lot of manuals but I haven`t had a good explanation.
Lets supose that we are descending in manage and the controller clear us to fly towards the outer marker, which one you have to pass at 1900` (Just an example). when you direct to this position, an altitude constrain, which one had not showed in the FMGS and even published in the approach chart, appear. E.g.: 2077`(Again, just an example). Why this happen? And, where can I find this information?
Thanks a lot.