Figure 46: Helicopter Height Velocity Diagram

Height above terrain (feet) Height velocity diagram for operation at sea level (Tests conducted on prepared surfaces) 2,200 pounds gross weight Indicated airspeed (mph) 600 500 400 300 200 100 0 0 20 40 60 80 100 40 Recommended takeoff profile Best rate of climb speed at sea level Use caution in this area to avoid contact of tail rotor guard with ground Avoid operation in this area Safe operating area