Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes
AD/CL-600/116
Air Driven Generator Strut
9/2009
Applicability:
Bombardier Inc. Models:CL-600-2B19, Serial Numbers (S/N) 7305 through 8051.CL-600-2C10, S/Ns 10003 through 10260.CL-600-2D15 and CL-600-2D24, S/Ns 15001 through 15106.
Requirement:
1. Identification Check:Check the Part Number (P/N) of the installed Air Driven Generator (ADG):a. If the ADG has Hamilton Sundstrand P/N 1711405, the strut wall thickness is within specification. No further action is required and compliance with this AD is complete.b. If the ADG has a Hamilton Sundstrand P/N in the 761339 series, check the ADG S/N and proceed as follows:i. If the S/N of the ADG is 2000 or higher, the strut wall thickness is within specification. No further action is required and compliance with this AD is complete.ii. If the S/N of the ADG is in the range 0101 through 1999 and symbol24-3 is marked in the S/N block of the identification plate, the strut wall thickness is within specification. No further action is required and compliance with this AD is complete.iii. If the S/N of the ADG is in the range 0101 through 1999 and symbol24-3 is not marked in the S/N block of the identification plate, check the S/N of the strut and generator housing assembly (for location, seeFigure 1, Sheet 1 of Hamilton Sundstrand Service Bulletin (SB) ERPS10AG-24-3) and proceed as follows:A. If the S/N of the strut and generator housing assembly is in the range 0001 through 2503, a fluorescent penetrant inspection is required. Proceed to Requirement 2 of this AD.
<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:85.05pt; margin-bottom:12pt; text-indent:-21.25pt"><span>B.</span><span style="width:10.25pt; text-indent:0pt; display:inline-block"> </span><span>If the S/N of the strut and generator housing assembly is 2504 or higher, the strut wall thickness is within specification.</span><span> </span><span>No further action is required and compliance with this AD is complete.</span></p><p style="margin-top:12pt; margin-left:63.8pt; margin-bottom:12pt; text-indent:-21.25pt"><span>iv.</span><span style="width:8.92pt; text-indent:0pt; display:inline-block"> </span><span>If the S/N of the strut and generator housing assembly is not checked, fluorescent penetrant inspection is required.</span><span> </span><span>Proceed to Requirement 2 of this AD.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 1:</span><span style="font-style:italic"> </span><span style="font-style:italic">Requirement 1 may be conducted visually, which requires the ADG to be lowered, or by checking the maintenance records.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>2.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Fluorescent Penetrant Inspection:</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt; text-indent:-21.3pt"><span>a.</span><span style="width:12.97pt; text-indent:0pt; display:inline-block"> </span><span>Applicable to CL-600-2B19 Aircraft, S/Ns 7305 through 8051:</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt"><span>Inspect the ADG strut, and replace the ADG as necessary, in accordance with the Accomplishment Instructions in Bombardier Alert Service Bulletin (ASB) A601R-24-120, Revision C, dated 20 April 2009, or later revisions approved by the Chief, Continuing Airworthiness, Transport </span><span>Canada</span><span>.</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt"><span>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.</span></p><p style="margin-top:12pt; margin-left:21.3pt; text-indent:-21.3pt; text-align:center"><span style="font-weight:bold">Table 1</span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:137.8pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Bombardier Alert SB A601R-24-120</span></p></td><td style="width:116.45pt; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Original Issue</span></p></td><td style="width:127.15pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 20 April 2005</span></p></td></tr><tr><td style="width:137.8pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Bombardier Alert SB A601R-24-120</span></p></td><td style="width:116.45pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision A</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 1 December 2005</span></p></td></tr><tr><td style="width:137.8pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Bombardier Alert SB A601R-24-120</span></p></td><td style="width:116.45pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision B</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 7 December 2006</span></p></td></tr><tr><td style="width:137.8pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Hamilton</span><span> Sundstrand SB ERPS10AG-24-3</span></p></td><td style="width:116.45pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Original Issue</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 14 April 2005</span></p></td></tr><tr><td style="width:137.8pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Hamilton</span><span> Sundstrand SB ERPS10AG-24-3</span></p></td><td style="width:116.45pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision 1</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 19 April 2005</span></p></td></tr><tr><td style="width:137.8pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Hamilton</span><span> Sundstrand SB ERPS10AG-24-3</span></p></td><td style="width:116.45pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision 2</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 14 November 2006</span></p></td></tr><tr><td style="width:137.8pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Hamilton</span><span> Sundstrand SB ERPS10AG-24-3</span></p></td><td style="width:116.45pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision 3</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 12 March 2009</span></p></td></tr></tbody></table><p style="margin-left:21.3pt; text-indent:-21.3pt"></p></td></tr></tbody></table>
<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-bottom:12pt"><span>Following completion of Requirement 2, no further action is required and compliance with this AD is complete.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 2:</span><span style="font-style:italic"> </span><span style="font-style:italic">Requirement 2 is only applicable if required by Requirement 1.b.iii.A. and Requirement 1.b.iv of this AD.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 3:</span><span style="font-style:italic"> </span><span style="font-style:italic">For ADGs specified in Requirement 1.b.iii.A repeat fluorescent penetrant inspections (per </span><span style="font-style:italic">Hamilton</span><span style="font-style:italic"> Sundstrand SB ERPS10AG-24-3) are required as part of the periodic ADG Functional Check procedure.</span><span style="font-style:italic"> </span><span style="font-style:italic">Refer to Airworthiness Requirements, Part 2 of Maintenance Requirements Manual, Appendix A - Certification Maintenance Requirements (CMR) and the Aircraft Maintenance Manual (AMM), as follows:</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span style="font-style:italic">- CMR Task No. C24-20-129-01.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span style="font-style:italic">- AMM Task No: 24-23-01-720-803.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 4:</span><span style="font-style:italic"> </span><span style="font-style:italic">For ADGs specified in Requirement 1.b.iii.A fluorescent penetrant inspection (per </span><span style="font-style:italic">Hamilton</span><span style="font-style:italic"> Sundstrand SB ERPS10AG-24-3) is required following each future unscheduled in-flight ADG deployment, as specified in the following task:</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span style="font-style:italic">- AMM Task No: 05-51-19-210-801.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 5:</span><span style="font-style:italic"> </span><span style="font-style:italic">In </span><span style="font-style:italic">Hamilton</span><span style="font-style:italic"> Sundstrand SB ERPS10AG-24-3, the fluorescent penetrant inspection is referred to as a “Penetrant Check”.</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt; text-indent:-21.3pt"><span>b.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Applicable to CL-600-2C10 Aircraft, S/Ns 10003 through 10260, and</span><br><span>CL-600-2D15 and CL-600-2D24 Aircraft, S/Ns 15001 through 15106:</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt"><span>Inspect the ADG strut, and replace the ADG as necessary, in accordance with the Accomplishment Instructions in Bombardier Alert Service Bulletin (ASB) A670BA-24-020, Revision C, dated 20 April 2009, or later revisions approved by the Chief, Continuing Airworthiness, Transport </span><span>Canada</span><span>.</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt"><span>Prior accomplishment of the fluorescent penetrant inspection, conducted in accordance with either the above referenced SB or one of the SBs listed in Table 2, also meets the intent of Requirement 2 of this AD.</span></p><p style="margin-top:12pt; margin-left:21.3pt; text-align:center"><span style="font-weight:bold">Table 2</span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:127.1pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Bombardier Alert SB A670BA-24-020</span></p></td><td style="width:127.15pt; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Original Issue</span></p></td><td style="width:127.15pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 20 April 2005</span></p></td></tr><tr><td style="width:127.1pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Bombardier Alert SB A670BA-24-020</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision A</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 17 May 2005</span></p></td></tr></tbody></table><p style="margin-left:85.05pt; text-indent:-21.25pt"></p></td></tr></tbody></table>
<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:127.1pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Bombardier Alert SB A670BA-24-020</span></p></td><td style="width:127.15pt; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision B</span></p></td><td style="width:127.15pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 7 December 2006</span></p></td></tr><tr><td style="width:127.1pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Hamilton</span><span> Sundstrand SB ERPS10AG-24-3</span></p></td><td style="width:127.15pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Original Issue</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 14 April 2005</span></p></td></tr><tr><td style="width:127.1pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Hamilton</span><span> Sundstrand SB ERPS10AG-24-3</span></p></td><td style="width:127.15pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision 1</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 19 April 2005</span></p></td></tr><tr><td style="width:127.1pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Hamilton</span><span> Sundstrand SB ERPS10AG-24-3</span></p></td><td style="width:127.15pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision 2</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 14 November 2006</span></p></td></tr><tr><td style="width:127.1pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Hamilton</span><span> Sundstrand SB ERPS10AG-24-3</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Revision 3</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p><span>Dated 12 March 2009</span></p></td></tr></tbody></table><p style="margin-bottom:12pt"><span>Following completion of Requirement 2, no further action is required and compliance with this AD is complete.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 6:</span><span style="font-style:italic"> </span><span style="font-style:italic">Requirement 2 is only applicable if required by Requirement 1.b.iii.A. and Requirement 1.b.iv of this AD.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 7:</span><span style="font-style:italic"> </span><span style="font-style:italic">For ADGs specified in Requirement 1.b.iii.A repeat fluorescent penetrant inspections (per </span><span style="font-style:italic">Hamilton</span><span style="font-style:italic"> Sundstrand SB ERPS10AG-24-3) are required as part of the periodic ADG Functional Check procedure. Refer to Airworthiness Requirements, Part 2 of Maintenance Requirements Manual, Appendix A - Certification Maintenance Requirements (CMR) and the Aircraft Maintenance Manual (AMM), as follows:</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span style="font-style:italic">- CMR Task No. 24-23-00-102.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span style="font-style:italic">- AMM Task No: 24-23-01-720-802.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 8:</span><span style="font-style:italic"> </span><span style="font-style:italic">For ADGs specified in Requirement 1.b.iii.A</span><span style="font-style:italic"> </span><span style="font-style:italic">fluorescent penetrant inspection (per </span><span style="font-style:italic">Hamilton</span><span style="font-style:italic"> Sundstrand SB ERPS10AG-24-3) is required following each future unscheduled in-flight ADG deployment, as specified in the following task:</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span style="font-style:italic">- AMM Task No: 05-51-19-210-801.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-style:italic">Note 9:</span><span style="font-style:italic"> </span><span style="font-style:italic">In </span><span style="font-style:italic">Hamilton</span><span style="font-style:italic"> Sundstrand SB ERPS10AG-24-3, the fluorescent penetrant inspection is referred to as a “Penetrant Check”.</span></p><p class="Note" style="margin-top:12pt"><span>Note 10:</span><span> </span><span>Transport </span><span>Canada</span><span> AD CF-2009-27 dated 8 June 2009 refers.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Compliance:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>For Requirements 1 and 2 - Within 1,000 flight hours or before the next scheduled ADG functional check, whichever comes first, after the effective date of this AD.</span></p></td></tr></tbody></table>
This Airworthiness Directive becomes effective on 27 August 2009.
Background:
Two cases of a crack on a "dry" ADG (Hamilton Sundstrand part number in the 761339 series), in the aft area of the strut and generator housing assembly, have been reported on CL-600-2B19 aircraft. The same part is also installed on CL-600-2C10,-2D15 and -2D24 aircraft. Investigation determined that the crack was in an area of the strut where the wall thickness of the casting was below specification, due to a manufacturing anomaly in a specific batch of ADGs. Structural failure and departure of the ADG during deployment could possibly result in damage to the aircraft structure. If deployment was activated by a dual engine shutdown, ADG structural failure would also result in loss of hydraulics for the flight controls.
Image unavailable in extracted text
James Coyne
Delegate of the Civil Aviation Safety Authority