"Denny" writes:

Well, simple enough to find out for sure... He can call the FSDO and
ask them if he makes up a logbook is the engine airworthy... Be
interesting for him to report back to us... I'm always willing to
learn...

Why do you think "the logbook" is needed?

Can you point out where the FARs speak of "logbook"?

What are the FAR stated requirements for this "logbook"?

How long must one keep this "logbook"?

-jav