"Michael" wrote in message

That's probably the best rationale I've ever heard for 1500 RPM and
one notch of flaps. We all worry about shock cooling

Actually, no we do not all worry about shock cooling. Neither do we all
worry about shock heating. Many highly respected pilots and mechanics
believe that shock cooling and shock heating are myths, at least for modern
aircraft engines. The manufacturers have also said that shock cooling and
shock heating should not be a problem -- of course, maybe they like to sell
replacement engines. :-)

I seriously doubt that shock cooling is much of a problem on training
aircraft, at least. These airplanes are subjected to all kinds of supposed
mistreatment, but their engines almost always make it to TBO.