One of the major functions of the flaps is to which of the following?

• A. Increase sink rate and increase airspeed during landing
• B. Decrease airspeed needed for approach and decrease landing roll
• C. Maintain sink rate, decrease drag, and increase airspeed during landing
• D. Decrease sink rate and increase airspeed during landing

Answer: (B)

Flaps are high-lift devices that let the wings generate more lift at lower speeds by increasing camber and surface area. This lets the airplane fly slower safely, so you don’t have to reach high speeds to stay airborne during approach. The added drag from extended flaps also helps you control descent and slows the airplane, which makes it easier to descend steeply without speeding up. Together, these effects reduce the approach speed you need and shorten the landing distance, leading to a shorter landing roll after touchdown. That’s why the option describing a lower approach airspeed and a shorter landing roll is the best choice.