Apache AH-64E ASE Practice Test

Emergency autorotation is the process a helicopter uses to land safely when engine power is lost. The rotor keeps turning because the upward flow of air through the rotor disk provides the energy needed to sustain lift during descent, so you can control a controlled, power-off landing. In a power-off landing scenario, crews perform autorotation; training covers how to manage rotor speed (Nr), choose the appropriate airspeed, and use cyclic control to set up the landing. Keeping the rotor at the right speed ensures there’s enough energy to flare and touch down softly, while the cyclic directs the glide path and attitude for a stable approach. Practicing these elements helps pilots convert that rotor energy into a controlled descent and a safe landing even without engine power.