Document ID: chunk:federal_register_of_legislation:F2009L02774:body:0:p2
Version: federal_register_of_legislation:F2009L02774
Segment Type: other
Provision Reference: 
Character Range: 2789–5875

the ADG to be lowered, or by checking the maintenance records.

      2. Initial Fluorescent Penetrant Inspection:

      Inspect the ADG strut and replace the ADG, as necessary, in accordance with paragraphs 2.A., 2.C. and 2.D. of the Accomplishment Instructions in Bombardier Alert SB 604-24-017, Revision 1, dated 15 January 2007, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

      Prior accomplishment of the fluorescent penetrant inspection, conducted in accordance with either the above referenced SB or one of the SBs listed in Table 1 of this AD, also meets the intent of Requirement 2 of this AD.

      Table 1
   Bombardier Alert SB 604-24-017.       Original issue  Dated 6 May 2005
   Hamilton Sundstrand SB ERPS10AG-24-3  Original issue  Dated 14 April 2005
   Hamilton Sundstrand SB ERPS10AG-24-3  Revision 1      Dated 19 April 2005
   Hamilton Sundstrand SB ERPS10AG-24-3  Revision 2      Dated 14 November 2006
   Hamilton Sundstrand SB ERPS10AG-24-3  Revision 3      Dated 12 March 2009

   If the ADG is replaced by an ADG with P/N 604-90800-23 (Hamilton Sundstrand P/N 1711405), no further action is required and compliance with this AD is complete.

   Note 2:  Requirement 2 is only applicable if required by Requirement 1.b.iii.A. of this AD.

   Note 3:  For aircraft with S/Ns 5611 through 5665, Bombardier conducted the initial fluorescent penetrant inspection prior to aircraft delivery.  As long as the ADG has not been replaced since aircraft delivery, this meets the intent of Requirement 2 of this AD.

   Note 4:  In Hamilton Sundstrand SB ERPS10AG-24-3, the fluorescent penetrant inspection is referred to as "Penetrant Check".

      3. Repeat Fluorescent Penetrant Inspections:

      Inspect the ADG strut and replace the ADG, as necessary, in accordance with paragraphs 2.A., 2.C. and 2.D. of the Accomplishment Instructions in Bombardier Alert SB 604-24-017, Revision 1, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

      If the ADG is replaced by an ADG with P/N 604-90800-23 (Hamilton Sundstrand P/N 1711405), no further action is required and compliance with this AD is complete.

   Note 5:  Requirement 3 is required for each ADG that has been inspected in accordance with Requirement 2 of this AD.

      4. Inspection after an Unscheduled In-Flight ADG Deployment:

        a. Visually inspect the ADG strut and replace the ADG, as necessary, in accordance with paragraphs 2.A., 2.B. and 2.D. of the Accomplishment Instructions in Bombardier Alert SB-604-24-017, Revision 1, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

        If the ADG is replaced by an ADG with P/N 604-90800-23 (Hamilton Sundstrand P/N 1711405), no further action is required and compliance with this AD is complete.

        b. Perform a fluorescent penetrant inspection of the ADG strut and replace the ADG, as necessary, in accordance with paragraphs 2.A., 2.C. and 2.D. of the Accomplishment Instructions in Bombardier