# Bombardier Service Bulletin 604-24-026 Copy: Revision 01 ("FAA-2014-0625 SB 604-24-026 R01"), 16 pages: PDF https://openairdocs.org/files/sha256/4d/ad/4dad97784c632e364fe566795ba079c6a4f7cfd7cfb10bf066b6e3a67b7744ed; text https://openairdocs.org/service-documents/bombardier/sb-604-24-026/file/4dad97784c63.md. Rights: © Bombardier Inc. Filed by the FAA in regulations.gov docket FAA-2014-0625; AD 2015-25-05 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. ## Details - Manufacturer: [Bombardier](https://openairdocs.org/service-documents/bombardier.md) - Type: Service bulletin (Service Bulletin) - Number: 604-24-026 - Latest revision known: 604-24-026, Revision 01, dated January 13, 2014 (OpenAirDocs) - Page: https://openairdocs.org/service-documents/bombardier/sb-604-24-026 ## ADs that cite it (1) (OpenAirDocs) Newest first, with the revision each names, as OpenAirDocs read it from the AD's text. - [AD 2015-25-05](https://openairdocs.org/ad/2015-25-05.md), effective Jan 28, 2016: Revision 01 Also cited in [1 proposed AD](https://openairdocs.org/service-documents/bombardier/sb-604-24-026/proposed.md). ## Text (16 pages) Rights: © Bombardier Inc. Filed by the FAA in regulations.gov docket FAA-2014-0625; AD 2015-25-05 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 604-24-026 Page 1 of 1 SERVICE BULLETIN REVISION TRANSMITTAL SHEET MODEL CL-600-2B16 Discard the Basic Issue of this Service Bulletin dated Sep 18/2012 and replace in its entirety with this Revision 01. Service Bulletin No. 604-24-026 Date of Basic Issue Se p 18/2012 Revision No. 01 Dated Jan 13 /2014 For action applicable to aircraft on which the Basic Issue of this Service Bulletin was done, refer to the retroactive action box on Page 1 of this Service Bulletin. This revision is issued to incorporate the change given in the Restriction and/or Special Instruction (RSI), C-4087. The changes are as follows: 1. Add a retroactive Action Box. 2. Add, in Paragraph 1.A ., Effectivity, NOTES. 3. Change Paragraph 1.K., to revise the Restri ction and/or Special Instruction (RSI), C-4087 to Rev. C and add references to Modification Summary, 600-6366, Rev. B and Kit Drawing K601-85032, Rev. A. 4. Change Paragraph 2.B.(3)(b), to provide addi tional clarification for damaged cables. 5. Change Paragraph 2.B.(4), to add a refe rence to Kit Drawing K601-85032. 6. Add Kit Drawing K601-85032. 7. Make miscellaneous minor changes, as necessary, with no change of context. ### Page 2 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 1 of 1 SERVICE BULLETIN SUMMARY This Service Bulletin is available at: www.cic.bombardier.com MODEL CL-600-2B16 ATA 24-11 ATA 29-11 ELECTRICAL POWER HYDRAULIC POWER SPECIAL CHECK/REWORK – INTEGRATED DRIVE GENERATOR (IDG) AND HYDRAULIC SYSTEMS NO. 1 AND NO. 2 – AFT EQUIPMENT BAY RIGHT IDG POWER CABLE AND ADJACENT HYDRAULIC LINES SUPPORT BRACKETS The information below is provided for your reference. For full details, please see corresponding paragraph contained within this bulletin. RECOMMENDED SPECIFIED TIME COMPLIANCE COMPLIANCE TIME In less than 400 flight hours or at the Next Maintenance Inspection, whichever comes first, from this Service Bulletin release date (Basic Issue) EFFECTIVITY: A/C Serial No. 5301 to 5665 MANPOWER: 1 man-hour is necessary to do the special check. For additional man-hours that may be necessary for the rework, refer to Paragraph 1.F. CONTINUED AIRWORTHINESS (CAW) FLEET CAMPAIGN YES NO TLMC, CH 5 AFFECTED YES NO KITS and/or PARTS YES NO TOOLING/GSE YES NO PLANNING INFORMATION: See important information at the start of Paragraph 1. YES NO DEDICATED SCHEDULE YES NO PREREQUISITE SERVICE BULLETINS: N/A To place an order for parts or kits, please call Bombardier Aerospace Parts Services at: 514-855-2999 or 1-866-538-1247 ### Page 3 Refer to applicable governmental agency regulations and requirements and make sure that the work described in this Service Bulletin is performed in compliance with manufacturer’s recommendations and/or acceptable industry standards. This document is proprietary to Bombardier Inc. and/or its affiliates and may not be reproduced or copied in any form or by any means without the prior written consent of Bombardier Inc. and/or its affiliates. © 2012 - 2014 Bombardier Inc. All rights reserved Learjet, Challenger, Global, are registered trademarks of Bombardier Inc. or its subsidiaries. Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 1 of 11 SERVICE BULLETIN This Service Bulletin is available at: www.cic.bombardier.com MODEL CL-600-2B16 ATA 24-11 ATA 29-11 ELECTRICAL POWER HYDRAULIC POWER SPECIAL CHECK/REWORK – INTEGRATED DRIVE GENERATOR (IDG) AND HYDRAULIC SYSTEMS NO. 1 AND NO. 2 – AFT EQUIPMENT BAY RIGHT IDG POWER CABLE AND ADJACENT HYDRAULIC LINES SUPPORT BRACKETS RETROACTIVE ACTION AIRCRAFT, SERIAL NOS. 5452 AND 5569, THAT ALREADY PERFORMED THE BASIC ISSUE OF THIS SERVICE BULLETIN IN CONJUNCTION WITH SRPSA 30806 OR 27512, DO NOT MEET THE INTENT OF THIS REVISION 01 AND SHOULD INCORPORATE KIT DRAWING K601-85032 IN ORDER TO MEET THE 0.5” MINIMUM CLEARANCE. ALL OTHER AIRCRAFT WHICH HAVE INCORPORATED THE BASIC ISSUE HAVE MET THE INTENT OF THE SERVICE BULLETIN, REVISION 01. 1. PLANNING INFORMATION NOTE: For logistic purposes and parts control, it is suggested to do the special check, before ordering any parts. ### Page 4 MODEL CL-600-2B16 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 2 of 11 A. Effectivity CL-600-2B16 aircraft, Serial No. 5301 to 5665. NOTES: 1. Aircraft, Serial Nos. 5452 and 5569 that already performed the Basic Issue of this Service Bulletin in conjunction with SRPSA 30806 or 27512, does not meet the intent of Revision 01 and should incorporate kit drawing K601-85032 in order to meet the 0.5” minimum clearance. 2. The remaining aircrafts that have incorporated the Basic Issue of this Service Bulletin already meet the intent of this Revision 01. If the Basic Issue was entered in the log book, you can enter Revision 01 in the aircraft log book without doing any physical changes to the aircraft. 3. The instructions given in this Service Bulletin are only applicable to the systems and parts installed at the time of delivery of the aircraft or as changed by Bombardier Aerospace Service Bulletin(s). Before you do this bulletin, examine all STC, STA or equivalent action changes to make sure that this bulletin can be completed. B. Reason There has been one reported case of an aft equipment bay fire occurring due to arcing of chafed integrated drive generator (IDG) power cables. Additionally, the hydraulic line support brackets located at the fuselage station (FS) 672.00 and FS 682.00 have been found broken in service on several aircraft. A broken hydraulic line support bracket at FS672.00 or FS 682.00 could result in inadequate clearance between the IDG power cables and hydraulic lines, potentially resulting in chafing of the IDG power cables. Chafed IDG power cables can generate high energy arcing. This Service Bulletin provides inspection and applicable corrective action instructions regarding the IDG electrical harness and the hydraulic line support brackets. C. Description This Service Bulletin gives instructions to: – Get access to the AFT equipment bay, – Inspect the IDG power cable on the right side, between FS 654.50 and FS 672.00, when applicable reroute and/or repair or replace the damaged IDG power cable, – Inspect the hydraulic lines fairlead block and support bracket, on the right side, at FS 672.00 and FS 682.00, when applicable, replace the cracked or damaged fairlead block(s) and/or support bracket(s), and – When applicable, do the necessary tests to make sure that the system operates correctly. ### Page 5 MODEL CL-600-2B16 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 3 of 11 D. Compliance Recommended in less than 400 flight hours or at the next maintenance inspection, whichever comes first from this Service Bulletin release date (Basic Issue). E. Approval The technical content of this Service Bulletin has been approved under the authority of Transport Canada Civil Aviation (TCCA) Design Approval Organization (DAO) No. DAO #93-Q-02. NOTES: 1. The technical content of this Service Bulletin is accepted by the FAA under the Canada/USA bilateral Aviation Safety Agreement. 2. The technical content of this Service Bulletin is accepted by the JAA and by EASA in accordance with established procedures. F. Manpower NOTES: 1. The man-hours given are estimates to help you schedule the tasks given in this bulletin. The estimates are for direct labor performed by an experienced crew and do not include the time for familiarization, planning, aircraft preparation in hangar such as towing and positioning of scaffolds, removal of interior furnishings, repainting, supervision and inspection. For more information related to the manpower estimates, refer to SB 604-00-002. 2. This Service Bulletin may require consumable materials that have specific curing times (refer to Paragraph 3). The accumulated curing time is not included in the labor estimates and should be considered for planning purposes before you schedule this Service Bulletin. 1 man-hour is necessary to do the special check in the aft equipment bay. Refer to the table that follows for the man-hours that may be applicable if rework is required: MAN-HOURS (If Required) IDG POWER CABLES 2.5 man-hours for the repair of the IDG power cables. or 7 Man-hours for the replacement and testing of the IDG power cables. FAIRLEAD BLOCKS 2 man-hours per Fairlead Block Replacement (x2), at FS 672.00 and FS 682.00 in the AFT equipment bay. FAIRLEAD BLOCKS SUPPORT BRACKETS 4 Man-hours per Fairlead Block Support Brackets Replacement (x2), at FS 672.00 and FS 682.00 in the AFT equipment bay. Bombardier Aerospace does not pay for the labor that may be required for this Special Check/Rework. ### Page 6 MODEL CL-600-2B16 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 4 of 11 G. Material - Cost and Availability The parts listed in Paragraph 3.B., may be necessary to do the rework. Bombardier Aerospace does not pay for the parts or materials that may be required for this Special Check/Rework. The Smart Parts Plus Program pays for the parts listed in Paragraph 3.B., if you place an order in less than 12 months from the Service Bulletin release date (Basic Issue). After this time limit the Smart Parts Plus Program will not pay for the parts. H. Tooling No equipment or special tools are necessary. I. Weight and Balance No change. J. Electrical Load Data No change. K. References – Bombardier Aerospace, Restriction and/or Special Instruction (RSI), C-4087, Rev. C. – Bombardier Aerospace, Modification Summary, 600-6366, Rev. B. – Bombardier Aerospace, Ki t Drawing K601-85032, Rev. A. – Bombardier Aerospace, Standard Pr actices Manual (SPM), Chapter 20. – CL-604 Aircraft Maintenance Manual (AMM), Chapters 6, 12 and 24. – CL-604 Aircraft Illustrated Parts Catalog (AIPC), Chapter 24 and 28. – CL-604 Wiring Manual (WM), Chapter 24. L. Other Publications Affected None. M. Equivalent Service Bulletins – For the Challenger 605 aircraft, use SB 605-24-007. – For the Challenger 601 aircraft, use SB 601-0625. ### Page 7 MODEL CL-600-2B16 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 5 of 11 2. ACCOMPLISHMENT INSTRUCTIONS NOTES: 1. All TASKs given in the procedures that follow are from the CL-604 Aircraft Maintenance Manual unless otherwise specified. 2. All references made to zones, a ccess panels and/or doors, are from the CL-604 Aircraft Maintenance Manual, Chapter 6. A. Aircraft Setup (1) Obey all electrical/electronic safety precautions. Refer to TASK 24-00-00-910-801. (2) Remove the external ac power . Refer to TASK 12-00-07-861-802. (3) Remove the external dc power . Refer to TASK 12-00-07-861-804. B. Special Check/Rework (1) Make sure that the IDG power cables are properly routed and supported above and below the hydraulic/pneumatic lines with a minimum clearance distance of 0.5 inch (12.7 mm) between the IDG power cable and the hydraulic and pneumatic lines, as shown in Figure 1, Figure 2 and Figure 3. RHS, View Looking Outboard Between FS 654.50 and FS 672.00 Figure 1 ### Page 8 (OCR) CHALLENGÉR 604 MODEL CL-600-2B16 No. 2 HYDRAULIC PRESSURE LINE STANDOFF RHS ENGINE IDG POWER CABLES CLAMP 0.50 inch 0.50 inch (12.7 mm) (12.7 mm) MINIMUM MINIMUM PNEUMATIC LINE CLEARANCE CLEARANCE RHS, Top View, IDG Cables Minimum Clearance Requirements Figure 2 SUCTION DRAIN PRESS CASE . 00 REEM 15 HEEM 22 REEM 30 RHS, Top View Figure 3 Basic Issue: Sep 18/2012 604-24-026 • Revision 01: Jan 13/2014 Page 6 of 11 ### Page 9 MODEL CL-600-2B16 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 7 of 11 (2) If there is any slack in the IDG power cables, between the two clamps, loosen the clamps and pull the extra length up in order to get a straight run. Re-tighten the clamps. (3) Inspect for evidence of chafing between the IDG power cables and the adjacent hydraulic and pneumatic lines. (a) If any of the four conductors is found with damage to the insulation, and only if there is no damage to the core wire conductor, repair the damaged cable(s) insulation per the following instructions: (i) The repair shall start at least 0.5 inch (12.7 mm) above and below the damaged area. (ii) Use one of the materials that follow then wrap the damaged area by applying one layer insulating tape over the damaged area (wire jacket and existing insulating sleeve), using 50% overwrap. - Self-Fusing silicone rubber electrical tape, AA-59163, - Glass cloth electrical tape, MIL-I-19166, or - Self-amalgamating harness t ape, S1081 with hot melt adhesive Tape, S1030, (Heat shrinks in place per vendor information). (b) Permanent repairs to the core wire are not allowed, if any damage to the core conductor is found and the IDG power cable requires replacement. Submit an SRPSA to Customer Support Engineering (CSE) with full details on damaged IDG cable, for cable identification required for parts ordering. IDG Power Cables Figure 4 (4) If the minimum clearance distance of 0.5 inch (12.7 mm) cannot be achieved between the IDG power cable and the hydraulic and pneumatic lines, refer to Kit Drawing, K601-85032 for instructions on modifying cable routing and hardware. ### Page 10 MODEL CL-600-2B16 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 8 of 11 (5) Inspect the fairlead blocks and the fairlead block support bracket at FS 672.00 and FS 682.00 as per the steps that follow. Refer to Figure 1 and Figure 5. (a) Inspect the fairlead block for evidenc e of cracking, bulging or separation. Make sure that the installation is proper on each hydraulic line. Replace the fairlead block if required. (b) Inspect the fairlead block support bracket attached to the frame at FS 672.00 and FS 682.00. If any cracks are found, replace the support bracket. NOTE: When Applicable, if the rivets for the brackets installation are too short or too long, it is permissible to adjust the length to suit the installation. RHS, View Looking Outboard at FS 672.00 View Similar at FS 682.00 Figure 5 C. Testing When applicable, if the IDG power cable was found damaged and replaced, do an operational test of the integrated drive generator (IDG). Refer to TASK 24-11-01-710-801. D. Close-out Remove all tools, equipment and unwanted materials from the aircraft. ### Page 11 MODEL CL-600-2B16 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 9 of 11 E. Recording When this Service Bulletin is completed, make an entry in the aircraft log and send the attached Incorporation Notice to Bombardier Business Aircraft Customer Services (BBACS). In an effort to improve the quality of our technical communications, we are requesting your feedback. Please take a moment to fill out our easy on-line Service Bulletin survey: http://csefeedback.aero.bombardier.com 3. MATERIAL INFORMATION A. Kit No kits required. B. Parts The parts that follow may be necessary to do the “Fairlead Block/Fairlead Block Bracket Assy” rework and are available from Bombardier Aerospace Parts Services, Montreal: NEW PART NO. QTY ITEM USED PART NO. INSTRUCTIONS - DISPOSITION 601R75211-63 2 Fairlead Block Bracket Assy 601R75211-63 Discard MS20470AD5-7A (See NOTE 2) 5 Rivet MS20470AD5-7A Discard TA30500932 2 Fairlead Block TA30500932 or TA30500524-03 or TA30500012-01 Discard NOTES: 1. The part numbers for the items listed above are subject to change without revision to this Service Bulletin. In case of discrepancy between this list and any other list, the Illustrated Parts Catalog prevails and shall be used to determine the latest part number. 2. If the rivets for the brackets insta llation are too short or too long, it is permissible to adjust the length to suit the installation. 3. If any damage to the core conductor is found and the IDG power cable requires replacement. Submit an SRPSA for part and corrective action to Customer Support Engineering (CSE). ### Page 12 MODEL CL-600-2B16 Basic Issue: Sep 18/2012 604-24-026 Revision 01: Jan 13/2014 Page 10 of 11 C. Material The materials that follows, or equivalent, may be necessary to do this Service Bulletin. These can be purchased from a local supplier. Bombardier Aerospace does not pay for these consumables. DESCRIPTION PART No./NAME SPECIFICATION QUANTITY SUPPLIER (See Note) Glass Cloth Electrical Tape Scotch® 69 Tape MIL-I-19166 As Necessary Code: A Self-Fusing Silicone Rubber Electrical Tape Scotch® 70 Tape AA-59163 As Necessary Code: A Hot Melt Adhesive Tape S1030 RK6017 As Necessary Code: B Self- Amalgamating Harness Tape S1081 RK6019 As Necessary Code: B NOTES: 1. Refer to the table that follows for each supplier’s address listed by codes. 2. The Curing Time (CT), if applicable, for each consumable material is indicated with the description of each product. 3. At time of release of this Service Bulletin, the information on the supplier was valid and accurate. In the event that this information has changed, the operator is encouraged to use the World Wide Web to find a local supplier. SUPPLIERS ADDRESSES BY CODES Code: A 3M Product Information Center 3M Center, Building 225-3S-06 St. Paul, MN 55144-1000 U.S.A. Tel: 1-866-364-3577 http://solutions.3m.com/ Code: B Tyco Electronics Corporation 1050 Westlakes Drive Berwyn, PA 19312 Phone: 610-893-9800 http://www.te.com/en/home.html D. Publications No publications required. ### Page 13 K601-85032 – Kit – Improved IDG Cable Instl, RHS FS654 – FS672 (Sheet 1 of 1, Rev. A) Basic Issue: Sep 18/2012 Revision 01: Jan 13/2014 604-24-026 Page 11 of 11 ### Page 14 SERVICE BULLETIN EVALUATION FORM (Your ideas will help us provide better bulletins) SERVICE BULLETIN: 604-24-026 ISSUE: Rev. 01 DATED: Jan 13/2014 TITLE: Special Check/Rework – Integrated Drive Generator (IDG) and Hydraulic Systems No. 1 and No. 2 – Aft Equipment Bay Right IDG Power Cable and Adjacent Hydraulic Lines Support Brackets In an effort to improve the quality of our technical communications, we are replacing the standard Service Bulletin Evaluation Form with an on-line Service Bulletin Survey and we are requesting your feedback. Please take a moment to fill out our easy on-line Service Bulletin survey: http://csefeedback.aero.bombardier.com ### Page 15 SERVICE BULLETIN INCORPORATION SHEET – “604-24-026” BOMBARDIER SUBMISSION Upon completion of the Service Bulletin, please fill-in, fax to (514) 855-8798 or e-mail to Fracas at fracas.montreal@aero.bombardier.com If your aircraft is registered on CAMP and you are reporting to them, please do not send the incorporation sheet to Bombardier. If your aircraft is on another tracking system, please contact Bombardier to make arrangements for automated data submission. COMPLIED WITH Service Bulletin Number Rev. * Parts Completed YES NO N/A Remarks/Reason 604-24-026 01 - - - - - - - Actual hours to accomplish Service Bulletin: 1. Where the Service Bulletin is divided into a number of parts (e.g., PARTS A, B, C, D, etc.) which can be carried out separately, indicate only those parts completed at this time. 2. For repetitive checks (usually PART A) only the initial check should be reported unless otherwise stated in the Service Bulletin. * NOTES: 3. When more than one part is carried out at the same time, each part should be reported. Aircraft Serial No. Aircraft Reg. No. Airframe Hours: Airframe Landings S.B. Incorporation date Service Order No. (dd/mm/yy) Facility Incorporating S.B. Name Signature Date (dd/mm/yy) Signature not required if sent by E-Mail ### Page 16 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Bombardier Business Aircraft Customer Services (BBACS) P.O. Box 6087, Station Centre-ville Montreal, Québec, Canada H3C 3G9 Attention: Customer Support Department, Maintenance Engineering -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.