What is Min Flying Speed?
Never heard the term before.
Look at your Power Available Vs Power Required graph. PA line cuts through the
PR curve in (usually) 2 places.
The one on the right is your max speed in level flight, the spot on the left is min speed, you must descend if you go slower. The higher you go, the
PR curve moves up, and the
PR line slides down. When it becomes a tangent, you only have one speed, but technically you can never reach that tangent as you need excess power to get there.