Originally Posted by
Verrrmin
Hello there,
I have just started flying on a multi engine Piper Seneca V and recently I've been having a discussion with my instructor about engine power setting for the climb. In all manuals it is advisable to retard the throttles first and only then to decrease the RPM. However, my instructor has been insisting to decrease the RPM before adjusting the manifold pressure. The rest seems to be alright. Could anyone help please? Is there a possibility that my instructor might be wrong?
Your instructor is wrong. Go read the POH it gives the recommended climb power setting and the correct way to go from max power to climb power is to reduce the MP first with the throttle and then set the correct RPM with the prop levers. As Step pointed out reducing RPM without reducing MP is inviting detonation particularly in turbocharged engines.
This is such a basic engine handling fact that it makes wonder how qualified your instructor is to be teaching on this aircraft.....