Originally Posted by extreme P
Are you sure about that? LRC is a speed not affected by cost index as it is 99% best range under still air conditions.
True statement. LRC isn't effected by cost index when LRC is selected. However, climb and descent speeds will be effected.
In addition, while flying in LRC v. Econ, your IMN will not change as it does in Econ with respect to a headwind/tailwind.