We will do a long flight, under IFR. Clearly my presence is required
because he doesn't have an IR. Does it mean that I must be PIC on that
flight (because I am the only one with an IR).

Yes.

Can he log instrument time, or (if under the hood) simulated
instrument time)? What if the whole flight is VMC on top (most
likely).

If under the hood in VMC, he can log PIC time and simulated instrument
time. If not under the hood, and in IMC, he can log actual instrument
time and PIC time.

You, OTOH, might not be able to log PIC time when you are not required
as safety pilot, which would be VMC while he wears the hood. The fact
that you are required as Pilot In Command doesn't let you log PIC.

I would be suprised if he could log it as instrument instruction,
because I am not an instructor.

He could not log it as dual.

Jose
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