Hi Jean-Luc

I have asked in the FSW too but since switching from a competitors options to yours (for performance, support and update reasons) I cannot fly RNAV approaches anymore. The plane does not display the vertical information on the Flight Director let also the AP following it. Do you have any clues where I should look config wise to see if the plane and unit are talking to each other correctly? 

 

Thanks a lot.

Hi,

The RXP GTN provides vertical guidance and vertical A/P coupling for 'GPS' approaches alright. There are a number of options to looks for in the "Instruments Panel" settings section which depend on each aircraft. Some vendors are using this or that simvars set in their code and you have to setup the GTN overriding this or that set respectively. Usually it is a combination of HSI related and/or VOR related simvars in the panel.