Terrain Awareness

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   I have been communicating with Avidyne Support about the visual ground proximity warnings (amber and magenta crosshatching on the display).  The crosshatching is supposed to be inhibited in the vicinity of airports. If not inhibited, the crosshatching obscures important visual info, including runway orientation and step-down waypoints and descent restrictions. At KEUG (and perhaps in my dim recollection at other local airports in our area) the amber cross-hatching inhibition fails, so that a flood of amber cross-hatching appears on short final and spoils the visual display on the screen. The visual warnings can be turned off in set-up mode, but that isn’t something one should do on short final on an instrument approach when the pilot is surprised by the visual clutter.  Avidyne said they would work with the engineers to try to get that fixed, but any fix may not be rolled out until the next operating system update, scheduled for this fall. I am curious if other pilots have experienced this failure-to-inhibit at any other airport – if so, Avidyne Support should be made aware.