Ron Garret wrote...
It wouldn't surprise me a bit
if the FAA used 91.13 in a situation where something bad happened as a
result of someone letting a passenger fly.

The "something bad" would not be as a result of letting a passenger fly,
it would be as a result of insufficient cockpit management. Same as a
runaway trim or autopilot malfunction.

and also responded to
You're still responsible if the organic autopilot goes awry too.

with

Yes, but to legally take on that responsibility "on the record" requires
an instructor's certificate.

My understanding is that what the instructor certificate allows is for
the student to count the instruction towards the required flight time.
It has nothing to do with "taking on the responsibility".

Jose
--
The price of freedom is... well... freedom.
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