"Mxsmanic" wrote in message

OK, thanks. So this is true in all configurations, or only during
certain phases of flight like an approach?

Very few things are true in all configurations. Every time you want to
change an aircraft's configuration, you are adjusting a fine balance between
pitch and power. Usually, what you're seeking is stability. In general, a
more lasting, stable outcome will be achieved if you think of altitude
change in terms of power, and airspeed change in terms of pitch.


If I'm cruising, is it better to adjust throttles to maintain
altitude, or to set trim, or both, or what?

When setting up in cruise, do not drive the plane like most people drive a
car. You should start with a preplanned setting in mind: "I am going to
cruise at 2200 rpm and 21 inches". After you attain your altitude and
reduce to this power setting, you would then gradually trim the airplane so
it is flying level at that setting. Your speed will be what it is, plus or
minus a few knots indicated.