pure gliders with ads b?

It’s going to transmit ADS-B data once configured. Just do it, preferably after checking the squat switch switches the GND/ALT mode display, then check the display shows lat/lon (very basic test, tells you nothing about the GPS quality, just it has any old fix), do your transponder check and go do a test flight and pull the ADS-B report for that. Tight thermalling/very steep banks may cause degradation of GPS quality in the FAA report... on one hand you want to improve that (best GPS antenna location) on the other it may not ever be perfect if you push the glider to extreme bank angles.. If it’s degrading significantly at ~30/45 degree bank you have a problem. And beyond setup menu mistakes most other problems are usually GPS antenna location/obstruction.

2020 compliant installs should have no red flagged parameters in the FAA report, TABS installs will have red flags... that is expected (the FAA report just does not understand TABS).

Depending on the test gear the technician has they may be able to do a test of the ADS-B Out, but that is pretty rare. Even if they do, still pull a FAA performance report as well. Questions about the report email it to me.

On Sunday, January 13, 2019 at 12:33:24 PM UTC-6, Darryl Ramm wrote:
It’s going to transmit ADS-B data once configured. Just do it, preferably after checking the squat switch switches the GND/ALT mode display, then check the display shows lat/lon (very basic test, tells you nothing about the GPS quality, just it has any old fix), do your transponder check and go do a test flight and pull the ADS-B report for that. Tight thermalling/very steep banks may cause degradation of GPS quality in the FAA report.... on one hand you want to improve that (best GPS antenna location) on the other it may not ever be perfect if you push the glider to extreme bank angles. If it’s degrading significantly at ~30/45 degree bank you have a problem. And beyond setup menu mistakes most other problems are usually GPS antenna location/obstruction.

2020 compliant installs should have no red flagged parameters in the FAA report, TABS installs will have red flags... that is expected (the FAA report just does not understand TABS).

Depending on the test gear the technician has they may be able to do a test of the ADS-B Out, but that is pretty rare. Even if they do, still pull a FAA performance report as well. Questions about the report email it to me..

Thanks Darryl,
I have wondered if a high bank angle would mess with the antenna.
Scott