COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Dornier 228 Series Aeroplanes AD/DO 228/2 Horizontal Stabiliser Front Spar and Supports 10/89 Applicability: All models. Requirement: 1. Action in accordance with Dornier Service Bulletin 228-035 Rev 1 dated 18 February 1986. 2. Action in accordance with Dornier Service Bulletin 228-024, Rev 1 dated 25 April 1986. Note 1. Accomplishment of Requirement 2 constitutes terminating action for the inspection requirements of Requirement 1. Note 2. West German AD 85-97/3 dated 22 July 1986 refers. Compliance: 1. As detailed in Requirement Document 1. 2. Prior to accumulating 5000 flight cycles. Background: During ground runs and take-offs with 100% power setting the horizontal stabiliser is subject to asymetrical loads, which could result in cracking in the stabiliser front spar and connection areas.