This was news to me that Vne was a moving target established based on TAS and NOT IAS. It a great article for some of us that like to do our descent in the yellow arc, have increased HP, or are high flyers. At times the margin between the bottom of the yellow arc and top are smaller than expected. Any input from the propeller heads on board would be appreciated
www.vansaircraft.com/pdf/hp_limts.pdf
Karson