I am more than just aware of that thanks slam_chick. The FMS in my own work aircraft works out a great 3 degree VNAV all the way from top to bottom and also flies it beautifully all by itself. The point I was getting at (which seems well beyond the brainspace relm of your sarcastic and snide remark to which I am saddened to say has become more and more common around pprune in the last 10-12 years after the first 5-6 being quite enjoyable) is that there are plenty of multi crew turboprop RPT aircraft in this country that cannot fly a 3D approach solution without
continual manual input into the autopilot - even for tracking.
Mustafagander, that is also what I take it to mean as I was suggesting to Clarrie.
Regards,
OpsN.