"I have inspected this spinner assembly, (P/N, S/N), and have determined this assembly to be airworthy for use on my personal use aircraft, (S/N), registered in my name."
Signed by the owner/pilot along with his certification number.
Why limit it to just the spinner? Sign off everything on the plane yourself.
That's the idea, Hung!!
Who is the authority per the FAR's? The Administrator, Right?
And in these two statements, who has The Administrator handed over the FINAL AUTHORITY??
To the Pilot in Command!!
Right??