1. In accordance with Snow Engineering Co. Service Letter No. 235, dated 25 August 2004, revised 24 October 2006, or later FAA approved revision, accomplish the following: a. Install access holes for visual inspection of the part number 30012-7 horizontal stabiliser brace tube assembly (tube assembly). b. Conduct a detailed visual inspection for cracks in the part number 30012-7 tube assembly. 2. Replace the part number 30012-7 tube assembly with a new design part number 30766-1 tube assembly in accordance with Snow Engineering Co. Service Letter No. 129A, dated 7 August 2004, revised 15 November 2005; Service Letter No. 235, dated 25 August 2004, revised 24 October 2006; and Drill Template -602, Drawing No. SL129-602, dated 2 August 2004. 3. A part number 30012-7 tube assembly shall not be installed on any aircraft. Note 1: Replacement of the part number 30012-7 tube assembly with a new design part number 30766-1 tube assembly is terminating action for the repetitive inspection requirement of this Directive. Note 2: FAA AD 2007-10-01 Amdt 39-15042 refers. |