Soar to New Heights with the 2025 Commercial Pilot License (CPL) Practice Exam – Ready for Takeoff!

Spoilers are aerodynamic devices located on the wings of an aircraft that serve primarily to reduce lift and increase drag. When activated, spoilers disrupt the airflow over the wing, effectively decreasing the wing's lift production. This is particularly useful during descent and landing, as it helps bring the aircraft down more quickly and allows for a steeper approach. By increasing drag, spoilers also assist in slowing down the aircraft, supporting a controlled landing speed.

The other choices do not accurately reflect the primary function of spoilers. While increasing lift during landing is not accurate, aircraft may employ different techniques for that purpose. Assistance in takeoff performance typically involves devices like flaps that enhance lift, rather than spoilers. Enhancing stability in turbulence is more related to the design of the aircraft’s structure and its control surfaces, rather than the specific function of spoilers. Thus, the design and operation of spoilers align directly with the role of reducing lift and increasing drag during flight maneuvers.