Does anyone know why Garmin does not provide vertical barometric coupling for GPS approaches so you can legally use a completely coupled approach to the minima?
Of course, we all know that in the United States they have WAAS and so don’t need vertical barometric coupling. Could that be the reason Garmin have not done anything for the rest of the world?
I think you have answered your own question. Garmin sells mainly into the GA market and the biggest majority of that is in the US whereas the likes of Collins etc have their products being used worldwide so there is a demand for VNAV baro features in their product.
It's about time the likes of CASA and our CAA got off their backsides and pushed for the introduction of WAAS into this part of the world.