The bank angle selector governs the roll rate.

The statement is false because the bank angle selector does not govern the roll rate of the aircraft. Instead, the bank angle selector is used to set a desired bank angle that the flight control system will attempt to maintain during flight operations. The roll rate, which is the rate at which the aircraft rolls about its longitudinal axis, is controlled by the aircraft's flight control system based on various inputs, including pilot commands and current flight conditions. By setting the bank angle, the pilot can influence the aircraft's maneuvering capabilities, but the actual roll rate is dependent on other factors within the control system and how it responds to maintaining that specified bank angle. Thus, while the bank angle selector is an important tool for managing flight dynamics, it does not directly control the rate of roll.