Originally Posted by
JohnBurke
That comes down to simple airmanship. You don't need anything to tell you about energy state when landing to prevent an overrun. Fly the appropriate speed and AoA, and land, don't hold it off until midfield, and calculate the landing performance in advance. Now you know, before you go.
Simple airmanship.
Unfortunately, some DO need these warning systems. The Colgan accident for example.