Why might ballast be added to the seat in the front cockpit before tow?

• A. To ensure the pilot's weight suits the weight limits specified by placards.
• B. To improve visibility.
• C. To change the color of the cockpit interior.
• D. To reduce swinging of the glider on tow.

Answer: (A)

Weight and balance is the key idea. Gliders have placards showing the allowable gross weight and center of gravity range for safe flight and tow. Before tow, ballast is added in the front cockpit to bring the pilot’s combined weight into that specified range and place the CG where the manufacturer intends. This makes takeoff controllability and tow stability predictable and within safe limits. If the pilot is light, ballast helps reach the required weight; if the pilot is heavier, ballast may not be needed. Ballast isn’t used for visibility, color, or primarily to reduce swing—its main purpose is to ensure the aircraft stays within the weight and balance limits shown on the placards.