Blanche wrote:
Actually, either one would be a non-structural fairing or cowling,
so
either way no signoff needed.

But remember, the wing root seal was originally installed BEFORE the
wing was attached!

Are you sure? In any case, I've never seen anyone pull the wing off to
replace the wing root seal. The deteriorated seal is pulled out, and
the new seal is pushed in, at least on every Piper product I've ever
seen. That's clearly a preventive maintenance operation, since the
seals are non-structural and the removal and replacement requires no
complex aseembly/disassembly operation.

Michael