"David Salvagnini" wrote in message
...

I have been searching the FAA regulations for information who is authorized
to sign off Com/Nav or avionic equipment installation or replacement. For
now this is hypothetical.

Don't bother. You won't find anything.


Can someone please tell me what regulations govern certifications
requirements for a avionic sign-off?

The same ones that require an A&P's siggy on anything installed into the
aircraft.

Based on Part 43, I know radio and
navigation system work is "major" and therefore regulated.

Then you need remedial work on reading regulations. That is blatantly
false.

I also know if
installing a new radio, an A&P would be required to sign-off any
structural and weight and balance aspects of the install.

That is correct.

Does a new radio also
require a second sign-off from an FCC license holder?

No.

What about a new ODI
or an GPS?

No. No.


Jim