Transponder installation article- Soaring Magazine

Dan Marotta wrote on 12/26/2020 8:17 AM:
On 12/25/20 11:53 PM, 2G wrote:
On Thursday, December 24, 2020 at 10:07:36 AM UTC-8, paul.fer....gmail.com wrote:
Been following this thread, as my glider has a TT21, and not sure what else is connected to
it (TN72 GPS?). If I understand correctly, with the TT21 I cannot fly in A, B, and C
airspace, but okay to fly in the rest, correct?

Thanks,
Paul

Not only can't you fly IN those airspaces, you can't fly OVER them either, which may be the
bigger limitation. Going back to Minden from the north the shortest distance may be over the
Reno class C airspace, which only goes up to 8,400 ft. But you will need to be in compliance
with class C airspace to even over-fly this airspace. The non-compliant aircraft will either
have to get a waiver from ATC or fly 20 nm either east or west to avoid it altogether. Never
mind that this might put you into conflict with air traffic flying in and out of Reno.

Tom



But aren't gliders exempt from the ADS-B rules?* Or is a non-equipped glider not allowed to fly
over the top of the airspace?

I'm equipped, BTW.

My understanding is gliders can fly over Class C airspace above 10,000' without a transponder,
so you could fly over Reno on the way home to Minden - just don't sink below 10,000'. Of
course, I think it's too risky to fly without transponder in the Minden/Reno area (mode C on my
glider), and if I had a TT21, I put in a TN72 with a TA50 antenna. The next glider will have a
TT22/TN72 combo.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1