COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beagle B121 (Pup) Series Aeroplanes AD/BEA 121/26 Rudder Control Tube Bolt 10/88 DM Applicability: All models. Requirement: Action in accordance with British Aerospace Alert SB B121/94. Compliance: Prior to further flight after 27 July 1988 and thereafter at each removal/replacement of the subject bolt. Background: Certain combinations of rudder and elevator control settings have resulted in this bolt fouling the elevator control tube. This may restrict or jam control movement.