CnF and Stephan,
Surely the whole point of the problem about NPAs in cold wx with the Airbus (and I guess the Boeing, but have no first hand experience) is that a managed approach is not possible because the kit is itself trying to establish you at the wrong altitudes. The vert deviation bar (brick or doughnut in the Airbus depending on mod state) will be below you throughout the approach. If you have corrected the final descent altitude correctly and descend at the correct point a normal RoD should put you on the correct profile. Next problem is working it all out since under radar control, as has been pointed out before in the thread, the controller will be making corrections for you. Not sure what would happen in PRC Stephan! Therefore one has to work backwards through the calcs to ascertain actual height and appropriate point for descent. Are there NPAs at Harbin Stephan..gets pretty cold there?