According to placards, what is the minimum pilot weight for the front seat?

• A. 135 lb
• B. 100 lb
• C. 90 lb
• D. 150 lb

Answer: (A)

Weight distribution and center of gravity determine how a glider responds to control inputs and during maneuvers. Placards show the safe weight ranges for each seat so the aircraft stays within its designed balance envelope. The front seat has a minimum pilot weight of 135 pounds. If the front-seat occupant weighs less than that, the overall balance can shift toward the rear (especially when the rear seat is occupied or ballast is used), reducing stability and elevator effectiveness and bringing the CG toward the aft limit. That can make control more difficult and potentially unsafe, particularly at low speeds or in turns. The other weights listed do not meet the placarded minimum, so they’re not acceptable for safe balance.