Dear friends,

Some days ago I bought a GTN 750 and GTN 650. The problem is now, that the ILS-approach does not work any more. I put both CDIs into the VLOC-mode, the device accepts the localizer, but it don't come down on the glidepath although the autopilot is in the approach mode. It is not so, that is doesn't work properly (like a wrong glide-path-angel) it doesn't work anyhow.

2 hours ago, josef050153 said:

Dear friends,

Some days ago I bought a GTN 750 and GTN 650. The problem is now, that the ILS-approach does not work any more. I put both CDIs into the VLOC-mode, the device accepts the localizer, but it don't come down on the glidepath although the autopilot is in the approach mode. It is not so, that is doesn't work properly (like a wrong glide-path-angel) it doesn't work anyhow.

Hello Jose, and welcome to Avsim.  It's a great gathering place for sim pilots.  I am a user like you.  First observation is this.  Let us know what aircraft you are flying, and which simulator.  Then my first question is this.  What settings have you made for that aircraft in the RXP GTN Settings menu?  Do a shift + right mouse click on the upper edge of the GTN's bezel. Try the gauge in the virtual cockpit first.  If that does not bring up the menu then try the upper edge of the bezel in the pop-up gauge.  Settings to effectively connect to the aircraft's other avionics and autopilot vary from aircraft designer to aircraft designer.  They do not all write their aircraft's interface to a common standard (sad 😞).