EASA 2023-0219-E (Emergency)

Requires periodical replacement of titanium threaded bolts at the forward end of the short rudder trim tab actuating rods; a one-time inspection of the rudder counterbalance arm and other elements of the rudder trim tab installation; and any necessary corrective actions. Prompted by a determination that these titanium threaded bolts may be subject to unexpectedly high oscillating loads due to aerodynamic forces acting on the rudder trim tab. Failure of these bolts can subsequently damage the rudder and rudder trim tab and possibly result in loss of rudder control.