COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 300 Series Aeroplanes AD/BEECH 300/11 Main Landing Gear Clevis Assembly 1/99 Applicability: Models and serial numbers listed in Raytheon Aircraft Mandatory Service Bulletin (MSB) 2728. Requirement: Replace the left and right main landing gear actuator clevis assembly with a clevis assembly of improved design in accordance with the Accomplishment Instructions section in Raytheon Aircraft MSB 2728 or MSB 2728 Revision 1. Note: FAA AD 98-21-35 Amdt 39-10843 refers. Compliance: Unless already accomplished, within 200 hours time in service after 28 January 1999. This Airworthiness Directive becomes effective on 28 January 1999. Background: The FAA received reports of main landing gear failure on two of the affected aircraft. The actions specified by this Directive are intended to prevent failure of the actuator clevis assembly in the main landing gear caused by fatigue cracking of the original design part, which could lead to loss of control of the aircraft during landing operations.