Re: CF6 Reduced Climb Thrust???
Take for example a JT9D...on calling for climb thrust, there is a procedure whereby you may use a reduced climb thrust setting thereby not being so hard on the engines. Example: Initial Climb thrust is 1.40 EPR however, you may reduce this by 0.06 EPR to 1.34. When passing say 25,000' or the climb rate reduces to 1000 fpm (example), the reduction is lessened to 0.02 EPR and finally, you will require max climb thrust for the remainder of the climb. Use of max climb thrust may be used throughout the climb if you have vertical requirements to meet on the departure?
This serves several purposes such as fuel saving and engine wear and tear. This is to the best of my knowledge an approved procedure by P&W, however I have not come across one for the CF6?