Originally Posted by
bose-x
If I see anything during the flight that is unsafe then I will state I have control and that I become pilot in command, the flight then becomes a training flight.
Bose-x, just to play devil's advocate, surely the fact that the option for you to take over exists implies that you were in fact PIC all along? If the engine cut out, for example, would you take control, and if so doesn't this mean that the pilot being checked out was never really in command?