What is the function of trim tabs on an aircraft?

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Trim tabs serve a crucial role in enhancing the overall control and handling of an aircraft. By using trim tabs, pilots can adjust the aerodynamic surfaces of the control surfaces, such as the elevator, ailerons, or rudder, which helps maintain the desired flight attitude without continuous physical input from the pilot. This adjustment effectively balances the control forces acting on the aircraft, allowing for a more comfortable flight experience. Consequently, this reduces pilot fatigue, as the pilot does not need to exert constant force on the control yoke or stick to keep the aircraft level or maintain a specific climb or descent rate.

This functionality is particularly beneficial during long flights, where sustained pressure on the controls would be exhausting for the pilot. Therefore, the primary purpose of trim tabs is to provide this balance and assist in flight stability, making option C the accurate choice.

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