Hello,
FLEX is a term used by Airbus, Boeing uses Assume Temperature whch is the same.Fool the computer that its warmer outside to reduce takeoff thrust,saving engine life by reducing egt up to 56c using max assum temp(25%).(b737).
Boeing also uses variable derate tomreducemtake off thrust when assume temp is not possible,assum temp can be used in conjunctionmwith derate.
Excuse my ipad typing
