On Monday, September 25, 2017 at 1:20:47 PM UTC-5, Scott Williams wrote:
Hello Forum,
Could anyone willing to share a copy of their 337 documenting the installation of a transponder, maybe battery, and antenna contact me.

I am compiling a preliminary plan for installing a trig tt22 in my Cirrus, and want to have a complete plan of action before I spend. especially an internal antenna location.
Thanks In advance,

Scott, N8915

I suppose I should also ask, Does the installation of a transponder even require a 337?

Scott.