Basic Issue: Jan 31/2011 605-24-005

Page 1 of 1 

SERVICE BULLETIN SUMMARY 

This Service Bulletin is available at: 

www.cic.bombardier.com

MODEL CL-600-2B16

ATA 24-00 

ELECTRICAL POWER 

MODIFICATION – OXYGEN SUPPLY SYSTEM – 

INSTALLATION OF PROTECTION ON ELECTRICAL WIRING HARNESS 

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 

Within 800 flight hours from the 

release date of this Service Bulletin

EFFECTIVITY: A/C Serial No. 5701 to 5778, 5780 to 5796, 5798, 5800 to 5802, 5804, 

5805, 5808, 5811 and 5813 

MANPOWER: 2 man-hours 

TLMC, CH 5, PART 4 REQUIREMENT 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 

NOTE: For convenience, it is recommended to do SB 605-35-001 at the same time as this 

Service Bulletin. 

To place an order for parts or kits, please call Bombardier Parts Logistics 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. 

© 2011 Bombardier Inc. All rights reserved 

Challenger*, Global Express*, Global Express XRS*, Global 5000*, Learjet* are Trademarks of Bombardier Inc. 

Basic Issue: Jan 31/2011 605-24-005

Page 1 of 7 

SERVICE BULLETIN 

This Service Bulletin is available at: 

www.cic.bombardier.com

MODEL CL-600-2B16

ATA 24-00 

ELECTRICAL POWER 

MODIFICATION – OXYGEN SUPPLY SYSTEM – 

INSTALLATION OF PROTECTION ON ELECTRICAL WIRING HARNESS 

1. PLANNING INFORMATION 

NOTE: For convenience, it is recommended to do SB 605-35-001 at the same time as 

this Service Bulletin. 

A. Effectivity 

CL-600-2B16 aircraft, Serial No. 5701 to 5778, 5780 to 5796, 5798, 5800 to 5802, 

5804, 5805, 5808, 5811 and 5813. 

All other CL-600-2B16 aircraft, already meet the intent of this Service Bulletin, 

(Ref.: Restriction and/or Special Instruction (RSI), C-4067). 

NOTE: 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 

The electrical harness going to the oxygen pressure transducer (MT1WQ) and 

to the low pressure switch (S1WQ) has been installed without protection in the 

area of the oxygen cylinder. The wiring could chafe against the oxygen system 

components or surrounding structure in the area. This Service Bulletin adds 

protective conduit sleeving to eliminate any chafing conditions. 
MODEL CL-600-2B16 

Basic Issue: Jan 31/2011 605-24-005

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C. Description 

This Service Bulletin gives instructions to: 

– Access the oxygen cylinders behind the wardrobe, 

– Inspect and add protective conduit sleeving on affected wiring , and 

– Do the necessary test to make sure the system operates correctly. 

D. Compliance 

Recommended within 800 flight hours 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 605-00-002. 

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. 

2 man-hours are necessary to inspect and do the modification. 

The labor required to do this Service Bulletin is at no cost if: 

(i) the work is done at Bombardier Business Aviation Services (BBAS) 

or Authorized Service Facilities (ASF), and 

(ii) this Service Bulletin is scheduled in less than 48 months from its 

release date (Basic Issue). 
MODEL CL-600-2B16 

Basic Issue: Jan 31/2011 605-24-005

Page 3 of 7 

G. Material - Cost and Availability 

No kit or parts are necessary to do this modification. For material data, refer to 

Paragraph 3. 

H. Tooling 

GSE REFERENCE NO. PART NO. DESCRIPTION 

GSE 24í00í24 - Tag, Circuit Breaker 

NOTE: Refer to the CL-605 Illustrated Tool and Equipment Manual to make sure 

that you use the correct equipment configuration. 

I. Weight and Balance 

No change. 

J. Electrical Load Data 

No change. 

K. References 

– Bombardier Aerospace, Restriction and/or Special Instruction (RSI), 

C-4067, Rev. NC. 

– Bombardier Aerospace, SB 605-35-001 “Special Check/Modification – 

Oxygen Supply System – Inspection and Replacement of Oxygen Cylinder 

and Regulator Assembly (CRA) with Specific Serial Numbers”. 

– CL-605 Aircraft Maintenance Manual (AMM), Chapters 6, 12 and 35. 

– CL-605 Standard Practice Manual (SPM), Chapter 20. 

L. Other Publications Affected 

None. 

M. Equivalent Service Bulletin 

None. 
MODEL CL-600-2B16 

Basic Issue: Jan 31/2011 605-24-005

Page 4 of 7 

2. ACCOMPLISHMENT INSTRUCTIONS 

NOTES: 1. All TASKs given in the procedures that follow are from the CL-605 

Aircraft Maintenance Manual unless otherwise specified. 

2. All references made to zones, access panels and/or doors, are from 

the CL-605 Aircraft Maintenance Manual, Chapter 6. 

A. Aircraft Setup 

WARNING: OBEY ALL THE SAFETY PRECAUTIONS WHEN YOU DO 

MAINTENANCE ON OR NEAR ELECTRICAL/ELECTRONIC 

EQUIPMENT. IF YOU DO NOT DO THIS, YOU CAN CAUSE 

INJURIES TO PERSONS AND/OR DAMAGE TO THE 

EQUIPMENT 

(1) Make sure that the aircraft is in the standard configuration for maintenance. 

Refer to TASK 12-00-00-867-801. 

(2) Obey all the oxygen system safety precautions. Refer to 

TASK 35-00-00-910-801. 

(3) Open and tag the circuit breaker that follows: 

CB PANEL CB NO. NAME ZONE 

CBP 2 P9 PASS/CREW OXYGEN 222 

(4) Gain access to the oxygen cylinder through the wardrobe. 
MODEL CL-600-2B16 

Basic Issue: Jan 31/2011 605-24-005

Page 5 of 7 

B. Modification – Wiring Protection Addition 

(1) Behind the wardrobe, in the area of the crew oxygen reservoir, inspect 

the electrical wiring connected to the following connector, P1WQ and 

surrounding components for signs of damaged insulation, abrasion, or 

chaffing. The following wires require inspection: (Ref. Refer to the Wiring 

Manual, Chapter 35-21-00). See Photo 1. 

(a) Oxygen Pressure Transducer MT1WQ with connector P1WQ, 

(consisting of 2 single wire conductors, 1 twisted-shielded pair, 

and 1 shield return wire (respectively): WQ1G24, WQ10A20N, 

WQ2A24WHT, WQ3A24BLU and WQ4A20N (wire for shield 

return to ground)). 

(b) Low Pressure Switch S1WQ with connector P5WQ, (consisting 

of 2 wires: WQ22C24 and WQ19A20N). 

 Photo 1 

(2) Make sure that the harness is not coiled, and that there is no excessive 

slack, ensuring a minimum clearance distance of 0.5 inch even with 

harness movement, per Standard Practices Manual, Section 20-12-00 

“Wiring – Maintenance Practices”. 

(3) If necessary, trim wiring to length or push any excessive slack back into 

the main harness, while maintaining a drip loop (with connectors mated), 

per Standard Practices Manual, Section 20-12-00 “Wiring – Maintenance 

Practices”. 

(4) Install a wrap-around protective conduit sleeving, Part No. S8021-2 

(or other equivalent) over the harness and spot tie with lacing tape, per 

Standard Practices Manual, Section 20-12-00 “Wiring – Maintenance 

Practices”. See Photo 2. 
MODEL CL-600-2B16 

Basic Issue: Jan 31/2011 605-24-005

Page 6 of 7 

Photo 2 

C. Testing 

(1) Remove the tag and close the circuit breaker that follows: 

CB PANEL CB NO. NAME ZONE 

CBP 2 P9 PASS/CREW OXYGEN 222 

(2) If connector P1WQ has been disconnected from the Oxygen Pressure 

Transducer MT1WQ, perform an operational test. Refer to 

TASK 35-12-04-710-801. 

(3) If connector P5WQ has been disconnected from the Oxygen Low Pressure 

Switch S1WQ, make sure connector P5WQ is fully mated onto its mating 

receptacle. There is no retest procedure required. 

D. Close-out 

(1) Remove all tools, equipment and unwanted materials from the aircraft. 

(2) Close the access to the oxygen cylinder in the wardrobe. 

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). 
MODEL CL-600-2B16 

Basic Issue: Jan 31/2011 605-24-005

Page 7 of 7 

3. MATERIAL INFORMATION 

A. Kit 

No kits required. 

B. Parts 

No parts are required. 

C. Material 

The materials that follow, or equivalent, are 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)

Lacing cord - - As 

Necessary 

Code: A 

Protective 

Sleeving 

S8021-2 - 4 feet Code: B 

Lockwire - MS20995CY20 As 

Necessary 

Code: C 

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 

Varflex. 

512 W. Court Street 

Rome, NY USA 13440 

Phone: 315-336-4400 

Fax: 315-336-0005 

www.varflex.com

Code: B 

Tyco Electronics Corpora 

1050 Westlakes Drive 

Berwyn, PA 19312 

Phone: 610-893-9800 

www.tycoelectronics.com

Code: C 

Commercially Available 

D. Publications 

No publications required. 
THANK YOU FOR YOUR RESPONSE! 

PLEASE RETURN THIS COMPLETED EVALUATION FORM BY MAIL, E-MAIL OR FAX

SERVICE BULLETIN EVALUATION FORM 

(Your ideas will help us provide better bulletins) 

SERVICE BULLETIN: 605-24-005 ISSUE: Basic DATED: Jan 31/2011 

TITLE: Modification – Oxygen Supply System – Installation of Protection on Electrical Wiring 

Harness 

STRONGLY 

DISAGREE 

DISAGREE AGREE STRONGLY 

AGREE 

N/A 

x Instructions to do the Service Bulletin 

were accurate. 

Comments:

    

x Illustration(s), figure(s), and/or kit drawing(s) 

were helpful to carry out instructions. 

Comments:

    

x If a kit and/or parts were required, did the 

contents of the kit and/or parts received agree 

with the contents listed in the bulletin? 

Comments:

    

x The consumable materials listed under 

Paragraph 3 were easily procured. 

 Comments:

    

x Work was accomplished in the prescribed time.

Comments

    

x Overall, I was satisfied with this Service Bulletin. 

 Comments:

    

For 

administrative 

use only 

PLEASE SUPPLY US WITH THE FOLLOWING DATA AND FAX TO: (514) 855-7634 

or 

E-MAIL TO: MTL_BBAD_SB_Evaluation@aero.bombardier.com

OPERATOR:

051TC AIRCRAFT SERIAL NO.:

TELEPHONE:

FACSIMILE:

NAME: (Please print) 
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

Bombardier Business Aircraft Customer Services (BBACS) 

P.O. Box 6087, Station Centre-ville 

Montréal, Québec, Canada H3C 3G9 

Attention: Customer Support Department 

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
SERVICE BULLETIN INCORPORATION SHEET – “605-24-005” 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 

605-24-005 Basic - 

- - - 

- - - 

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 

Signature not required if sent by E-Mail (dd/mm/yy) 
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

Bombardier Business Aircraft Customer Services (BBACS) 

P.O. Box 6087, Station Centre-ville 

Montréal, Québec, Canada H3C 3G9 

Attention: Customer Support Department, Maintenance Engineering 

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