COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace BAe 146 Series Aeroplanes AD/BAe 146/9 Amdt 1 Applicability: All models. Steering Ring Cuff Nut 4/89 Requirement: 1. Action in accordance with BAe SB 32-A95. 2. Modify in accordance with BAe SB 32-95-70409A. Note: UK CAA AD 014-08-88 refers. Compliance: 1. As detailed in the Requirement Document. 2. Prior to 30 June 1989. Background: Insecurity of the steering cuff ring nut has resulted in unscrewing of the ring nut. This allows the steering cuff to drop resulting in a loss of nose wheel steering. Amdt 1 provides for terminating action.