ATPL Airframe Practice Test

The function of a rudder limiter system is to restrict rudder deflection during flight at high indicated airspeeds (IAS). This is crucial for several reasons. At high speeds, excessive rudder deflection can lead to structural stress and potential loss of control of the aircraft due to adverse yaw and increased drag. The rudder limiter ensures that the pilot cannot input more rudder than what the aircraft can handle safely at those speeds, protecting both the airframe and the pilot from unintended consequences of overcontrol.

In contrast to this, while there are other systems that may address issues related to turbulence or engine failure, those do not specifically pertain to the primary function of the rudder limiter. The rudder limiter’s main role is to maintain safe operational limits of the rudder at higher airspeeds, which is essential for maintaining aircraft stability and safety during critical phases of flight. This design helps prevent situations that could lead to control difficulties or structural failure, thereby ensuring a safer flying experience.