sixtyseven wrote:Not sure of that aircraft, but would guess there WOULD still be vertical guidance past the MAP. The approach would need to be coded in such a way to create that constant descent. A runway threshold fix +50 feet, to the MAP to the FAF is what I would expect. What there company policy demands with auto flight past the MAP with a runway visual I don't pretend to know but if they left it all hooked up it would arrive at the threshold at 50 feet (not taking any adverse weather into it).
The Boeing FCTM states that their are two scenarios where the MAP can be located at threshold crossing height or located back from the runway like in SXM. If VNAV is not disconnected prior to the MAP, VNAV guidance is level flight. If they followed the same stabilized decent profile from the FAF to the MAP (I think the published is 3 degrees) that would place them at a runway threshold crossing height of approximately 50 feet ( not sure where that point is in SXM-could be somewhere on the beach).
From a crew management perspective that is one of the reasons that it can be a challenging approach even on clear weather days.