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 Sep 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 Restriction 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 additional clarification for damaged cables. 

5. Change Paragraph 2.B.(4), to add a reference to Kit Drawing K601-85032. 

6. Add Kit Drawing K601-85032. 

7. Make miscellaneous minor changes, as necessary, with no change of context. 
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
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. 
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. 
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. 
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, Kit Drawing K601-85032, Rev. A. 

– Bombardier Aerospace, Standard Practices 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. 
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, access 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 
MODEL CL-600-2B16

Basic Issue: Sep 18/2012 604-24-026

Revision 01: Jan 13/2014 Page 6 of 11 

RHS, Top View, IDG Cables Minimum Clearance Requirements 

Figure 2 

RHS, Top View 

Figure 3 
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 tape, 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. 
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 evidence 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. 
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 installation 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). 
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 

SelfAmalgamating 

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.
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
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
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
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Bombardier Business Aircraft Customer Services (BBACS) 

P.O. Box 6087, Station Centre-ville 

Montreal, Québec, Canada H3C 3G9 

Attention: Customer Support Department, Maintenance Engineering 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --