Bombardier (Canadair) CL-600 (ChallengerBombardier (Canadair) CL-600 (Challenger) Series Aeroplanes

Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes

<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>Applicability:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>This AD applies to the following Bombardier Inc. aircraft:</span></p><p><span>Model CL-600-1A11 with Serial Numbers (</span><span style="font-weight:bold; font-style:italic">S/N</span><span>) from 1004 to 1085 inclusive;</span></p><p><span>Model CL-600-2A12 with S/N from 3001 to 3066 inclusive;</span></p><p><span>Model CL-600-2B16 with S/N from 5001 to 5194 inclusive;</span></p><p><span>Model CL-600-2B16 with S/N from 5301 to 5665 inclusive.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Requirement:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>C</span><span>heck the nose landing gear (</span><span style="font-weight:bold; font-style:italic">NLG</span><span>) selector valve and NLG door selector valve that are installed on the aircraft and replace, rework, and identify the valves, as required, in accordance with the Accomplishment Instructions of the applicable Service Bulletin (</span><span style="font-weight:bold; font-style:italic">SB</span><span>) listed below, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.</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 style="text-align:center"><span>Model</span></p></td><td style="width:141.65pt; 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>Service Bulletin</span></p></td><td style="width:112.65pt; 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>Date</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>CL-600-1A11 (CL-600)</span></p></td><td style="width:141.65pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>SB 600-0721, Revision 03</span></p></td><td style="width:112.65pt; 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 style="text-align:center"><span>23 February 2009</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>CL-600-2A12 (CL-601)</span></p></td><td style="width:141.65pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>SB 601-0558, Revision 03</span></p></td><td style="width:112.65pt; 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 style="text-align:center"><span>23 February 2009</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>CL-600-2B16 (CL-601-3A/3R)</span></p></td><td style="width:141.65pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>SB 601-0558, Revision 03</span></p></td><td style="width:112.65pt; 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 style="text-align:center"><span>23 February 2009</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>CL-600-2B16 (CL-604)</span></p></td><td style="width:141.65pt; 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>SB 604-32-021, Revision 04</span></p></td><td style="width:112.65pt; border-top: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>23 February 2009</span></p></td></tr></tbody></table><p style="margin-top:0pt; margin-bottom:0pt"><span></span></p><p style="margin-top:0pt"><span>Accomplishment in accordance with </span><span>1</span><span> of the following SB revisions also satisfies the requirements of this AD:</span></p><p><span>- SB 600-0721 Revision 02, dated 16 June 2008</span><span>;</span></p><p><span>- SB 601-0558, Revision 02, dated 16 June 2008</span><span>;</span></p><p><span>- SB 604-32-021, Revision 03, dated 16 June 2008.</span></p></td></tr><tr style="height:43.7pt"><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="page-break-before:always; page-break-inside:avoid; page-break-after:avoid"><span>Accomplishment in accordance with the original issuance of, or an earlier revision of, the applicable SB does not satisfy the requirements of this AD.</span></p></td></tr><tr style="height:43.7pt"><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="page-break-before:always; page-break-inside:avoid; page-break-after:avoid"><span style="font-style:italic">Note 1: </span><span style="font-style:italic"></span><span style="font-style:italic">The check is required whether or not an aircraft has previously been checked in accordance with AD/CL-600/86 (which </span><span style="font-style:italic">w</span><span style="font-style:italic">as cancelled</span><span style="font-style:italic"> and superseded by</span><br><span style="font-style:italic">AD/CL-600/111</span><span style="font-style:italic">). This is necessary since, following the issue of AD/CL-600/86, it has been determined that the S/N range of the affected valves requires expansion from the previous upper limit of S/N 0767 to S/N 2126 and the exact location of each of these additional valves is unknown.</span></p><p><span style="font-style:italic">Note </span><span style="font-style:italic">2</span><span style="font-style:italic">:</span><span style="font-style:italic"> </span><span style="font-style:italic">Valves that have an S/N with suffix “T” have been manufactured by </span><span style="font-style:italic">Tactair</span><span style="font-style:italic"> Fluid Controls Inc. and do not require any corrective action.</span></p><p><span style="font-style:italic">Note 3:</span><span style="font-style:italic"> </span><span style="font-style:italic">Valves manufactured by Kaiser Fluid Technologies, part number (</span><span style="font-weight:bold; font-style:italic">P/N</span><span style="font-style:italic">) 750006000, with S/N</span><span style="font-style:italic"> </span><span style="font-style:italic">from 0001 to 2126 inclusive, and ink stamp “SB750006000-1”, have already been checked and reworked as necessary and do not require any additional corrective action.</span></p><p><span style="font-style:italic">Note </span><span style="font-style:italic">4</span><span style="font-style:italic">:</span><span style="font-style:italic"> </span><span style="font-style:italic">A valve manufactured by Kaiser Fluid Technologies, with P/N 750006000, and S/N from 0001 to 2126 inclusive, must not be installed unless the marking “SB750006000-1” is ink stamped on the valve.</span><span style="font-style:italic"> The Illustrated Parts Catalogue for the relevant model gives this instruction.</span></p><p><span style="font-style:italic">Note </span><span style="font-style:italic">5</span><span style="font-style:italic">:</span><span style="font-style:italic"> </span><span style="font-style:italic">CL-600-2B16 (CL-605) aircraft, </span><span style="font-style:italic">with </span><span style="font-style:italic">S/N</span><span style="font-style:italic"> of </span><span style="font-style:italic">5701 </span><span style="font-style:italic">or higher</span><span style="font-style:italic">, are not affected by this AD. They were delivered with valves, P/N 750006000, that either </span><span style="font-style:italic">have </span><span style="font-style:italic">an S/N with suffix “T” or have the ink stamp marking “SB750006000-1”.</span></p><p><span style="font-style:italic">Note </span><span style="font-style:italic">6</span><span style="font-style:italic">:</span><span style="font-style:italic"> </span><span style="font-style:italic">Transport Canada AD CF-2009-21R1 dated 26 May 2009 refers. </span><span style="font-style:italic">That AD superseded</span><span style="font-style:italic"> TC AD CF-2006-16R1</span><span style="font-style:italic">,</span><span style="font-style:italic"> which was referred to in CASA AD/CL</span><span style="font-style:italic">-</span><span style="font-style:italic">600/86</span><span style="font-style:italic">, and corrected</span><span style="font-style:italic"> an error in TC AD CF-2009-21 dated 6 May 2009.</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>The action set out in the requirement section must be taken by the earlier of</span><span> the following</span><span>:</span></p><p style="margin-left:18pt; text-indent:-18pt"><span><span>(a)</span></span><span style="font:7pt 'Times New Roman'"> </span><span>within 250 f</span><span>light hours after 30</span><span> </span><span>July</span><span> </span><span>2009;</span></p><p style="margin-left:18pt; text-indent:-18pt"><span><span>(b)</span></span><span style="font:7pt 'Times New Roman'"> </span><span>the</span><span> end of 3</span><span>0</span><span> </span><span>January</span><span> </span><span>2010.</span></p></td></tr><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><span>This AD becomes effective on </span><span>9</span><span> </span><span>May</span><span> </span><span>201</span><span>4</span><span>.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Background:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>A specific batch of NLG and NLG door selector valves, </span><span>P/N</span><span> 601R75146-1 (Kaiser Fluid Technologies P/N 750006000), may have had their end caps incorrectly lock</span><span>‑</span><span>wired or incorrectly torqued during assembly. This condition can lead to the end cap backing off, with consequent damage to a seal and internal leakage within the valve.</span></p><p><span>Subsequently, if electrical power is transferred or removed from the aircraft before the NLG safety pin is installed, any pressure, including residual pressure, in the No. 3 hydraulic system can result in an </span><span>uncommanded</span><span> NLG retraction.</span></p><p><span>Although there have been no such cases reported on the Challenger models covered by this AD, there have been 6 cases reported on the CRJ (CL600-2B19) aircraft, 1 of which resulted in the collapse of the NLG at the departure gate.</span></p></td></tr><tr style="height:125.3pt"><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><span>AD/CL-600/111 became effective on 30 July 2009. It mandated a check of the NLG and NLG door selector valves installed on all aircraft in the applicability section above. Depending on the results, replacement, rework and additional identification of the valves may be required.</span></p><p><span>This AD is issued to correct a typographical error in the table in the requirement section of AD/CL-600/111. The applicable service bulletin reference for the Model CL-600-2A12 (CL-601)</span><span> has been corrected. There are no changes to the technical requirements or the compliance time of this AD from those in AD/CL-600/111.</span></p></td></tr></tbody></table>