On Thursday, January 4, 2018 at 10:28:50 PM UTC-7, Darryl Ramm wrote:

In an experimental glider you can use a TN72 to meet full 2020 Compliance if you choose to, that's the "SIL=3" install documented in the TN72 installation guide. For type certified gliders an actual TSO-C145c GPS source is required like the TN70.


Ok, so where does that leave a glider with an Experimental glider with a Trig 21?

I think I can reasonably avoid places like Reno and Spokane for now, just want other aircraft to see me.