On Tuesday, January 14, 2020 at 10:00:47 AM UTC-8, wrote:
For an experimental glider, do you have to record a TN performed on the glider ?
Does it need and A&P signature ?
Dan

I would hope that questions like this go to the person who does your annual condition inspection. Including discussing with them any work you intended to do on the glider before doing it.

Is the TN a major alteration? Likely not, but if it is... what does your operating limitations say? If it is your FSDO likely needs to get involved and you need to go back to a test flight program. If it's not a major alteration...

You should be recording all significant stuff in the log. Including TNs. Why would you not, you want to establish the glider was well maintained and TNs complied with.

Unlike a type certified glider you don't need an A&P IA (or A&P) signature for a return to service.