I was taught this a few years ago but i'm having trouble rembering why this technique is required. Could someone elaborate and explain with reference to what happens to IAS, EAS, TAS and MN as we climb using this technique?
From memory the altitude where this cross over occurs is where a jet will also fly at it's fastest GS, true? Or is was it something else that occurs at this height other than the above?
Cheers
P.S. Graphs would be great as they help me understand
