If it's anything like the older King Airs that I'm familiar with, each power lever simply controls a N2 governor. So the pilot sets power for max torque, (which takes, say, 75% forward on the power lever, and some intermediate N2 and ITT values) and as he climbs, it takes more and more forward power lever (along with associated higher N2 and ITT) to maintain that torque. At some altitude, he hits the ITT limit and from there on starts losing power.
Last edited by Vessbot; 23rd May 2017 at 05:30.