What KIAS range is specified for the Pattern for Normal Approach?

• A. 60-80 KIAS
• B. 80-100 KIAS
• C. 100-120 KIAS
• D. 40-60 KIAS

Answer: (B)

The main idea here is choosing an airspeed that keeps the helicopter stable and controllable through the approach while providing enough lift and maneuverability. For the Pattern for Normal Approach, 80-100 KIAS is specified because this range gives a balanced energy state: it preserves sufficient translational lift for a stable descent, keeps rotor authority ample for smooth control inputs, and allows timely reaction to wind gusts or pilot adjustments without pulling too much energy into the flare.

Going slower than 80 KIAS reduces translational lift and can make the approach feel jittery or require higher pitch and power to maintain a steady descent, increasing the risk of a higher sink rate or settling with power. Going faster than 100 KIAS reduces stability and control authority in the final stage, makes the descent steeper than intended, and can lead to overshoot or difficulty configuring for a stabilized final approach.

By staying in the 80-100 KIAS window, you get a stable, predictable approach path with adequate control responsiveness, which is why that range is the recommended pattern speed.