Originally Posted by
Denti
Vmcg can only be changed by using a derate. Not by using an assumed temperature. Which gives derate users quite an edge in winder operation as it allows higher take off weights due to lower Vmcg.
But if the higher takeoff weight for a particular flight is not required(as is frequently the case), why not use the assumed temperature method first instead of derated thrust?
Of course, frequently both get used together.