ATR 72 - 500
Flight Controls
What is the function of the “Releasable Centering Unit” (RCU), located between the rudder and the linkage to the pilot's pedals?
It locks the rudder when the gust lock is engaged.
It protects the rudder against turbulence
It stabilizes the rudder position when no action is applied on the pedals.
It limits the rudder movement at high speeds.