Rather than restart an old thread on Transponders (6yrs), I'll start fresh. It has been years since I've been on POA. Recently moved (returned after 38 yrs away) to Southern NH. I will need a shop this spring for 24 month transponder check. Searching GoogleFOO does not reveal much. Any contacts in the Nashua NH area for transponder checks? Drive in Drive out (trailer). Also in search of independent IA to complete owner assisted annual inspection on a glider. Standard Airworthiness Certification, so an A&P is not enought.