Cross check attitude

[hmanvel]

Several times recently I have been getting this warning right after starting up Skyview. It goes away after a minute or so. What might this be telling me?

 

[GalinHdz]

I see this once in a while when I start the system, I haven't moved and the GPS hasn't had time to get a good signal lock. Once I start moving or the GPS gets a lock, it goes away and everything works fine.

 

[dynonsupport]

Page 4-6 of the user guide covers this:

GPS Assist
In the event of airspeed loss (due to icing or other blockage) an accurate attitude is maintained if there is an accurate GPS ground speed source. When in this mode, a magenta GPS ASSIST message is displayed on the PFD and the ground speed is displayed below the indicated airspeed (IAS). If the connectivity with the GPS fails while in GPS assist mode, the attitude continues to be displayed, using the last known GPS ground speed as a reference. This mode is flagged on the horizon with a yellow CROSS CHECK ATTITUDE message. In the very rare case that this sequence of events occurs, the ADAHRS’ attitude accuracy is reduced; use other references in the aircraft to cross-check against the SkyView display.

Now I realize the above isn't happening to you most likely. What is probably happening is that you are getting a poor GPS lock and it's wandering some, giving us GPS speed, and then you are losing lock and GPS is going away. This causes us to think the pitot is failed and then when the GPS fails we give this message. It goes away when the GPS locks on again.

 

[hmanvel]

Okay I'll keep an eye on it. It's odd that it only recently started happening. And I just hooked up my Dynon audio so I'll be hearing about it!