Basic Issue: Apr 25/2011 

# 604-24-023 Page 1 of 1 

# SERVICE BULLETIN SUMMARY

This Service Bulletin is available at: www.cic.bombardier.com


### CL-600-2B16

ATA 24-23

ELECTRICAL POWER

MODIFICATION – EMERGENCY AC GENERATION SYSTEM – REPLACE THE AIR DRIVEN GENERATOR (ADG) GENERATOR CONTROL UNIT (GCU)
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

Recommended within 36 months from the release date of this Service Bulletin

(Basic Issue).
EFFECTIVITY: A/C Serial No. 5408 to 5665

MANPOWER: 1 man-hour is necessary to do this modification

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 : Consideration should be given to do this modification and SB 604-24-024 at the

next Scheduled Maintenance of the Air Driven Generator system. (Operational Test of the ADG, as per TLMC, Ch. 5, TASK 24-23-00-101* (1600 Hour or 24 Month, Task interval, whichever interval occurs first))
To place an order for parts or kits, please call Bombardier Parts Logistics at:

514-855-2999 or 1-866-538-1247Refer 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: Apr 25/2011 

# 604-24-023 Page 1 of 8 

# SERVICE BULLETIN

This Service Bulletin is available at: www.cic.bombardier.com


### MODEL CL-600-2B16

ATA 24-23

ELECTRICAL POWER

MODIFICATION – EMERGENCY AC GENERATION SYSTEM – REPLACE THE AIR DRIVEN GENERATOR (ADG) GENERATOR CONTROL UNIT (GCU)



### 1. PLANNING INFORMATION

NOTE : Consideration should be given to do this modification and SB 604-24-024

at the next Scheduled Maintenance of the Air Driven Generator system. (Operational Test of the ADG, as per TLMC, Ch. 5, TASK 24-23-00-101* (1600 Hour or 24 Month, Task interval, whichever interval occurs first)) . A. Effectivity CL-600-2B16 aircraft, Serial No. 5408 to 5665

. 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 This Service Bulletin gives instructions to replace the existing ADG GCU, Part No. 761341A with GCU, Part No. 761341B. The new GCU comes with an improved A1T1 transformer thermal cycling and a lower threshold undervoltage detection circuit that prevents nuisance faults and provides improved reliability.MODEL CL-600-2B16

Basic Issue: Apr 25/2011 

# 604-24-023 Page 2 of 8 C. Description This Service Bulletin gives instructions to:

–Get access to the Air Driven Generator (ADG), Generator Control Unit (GCU),

–Remove the old ADG GCU, Part No. 761341A (604-90800-7),

–Install the new ADG GCU, Part No. 761341B (604-90800-27), and

–Do the necessary tests to make sure that the system operates correctly. D. Compliance Recommended, within 36 months, from the release date of this Service Bulletin (Basic Issue).
NOTE : Consideration should be given to do this modification and SB 604-24-024 at the next Scheduled Maintenance of the Air Driven Generator system. (Operational Test of the ADG, as per TLMC, Ch. 5, TASK24-23-00-101* (1600 Hour or 24 Month, Task interval, whichever interval occurs first)) . 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 replace the GCU. The labor required to replace the GCU 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 36 months from its release date (Basic Issue).MODEL CL-600-2B16

Basic Issue: Apr 25/2011 

# 604-24-023 Page 3 of 8 If required, Bombardier Aerospace will pay 1 man-hour for the ADG in-flight deployment test including the post flight ADG stowage. Bombardier Aerospace will also pay for the direct operating cost as per the industry’s standard, (ref.: Conklin & de Decker - Aircraft Cost Evaluator 2011, Volume I) of the flight test required for the return to service of the ADG GCU replacement, if: (i) the work is done during new aircraft warranty period, and (ii) the work is done at Bombardier Business Aviation Services (BBAS) or Authorized Service Facilities (ASF). G. Material – Cost and Availability The GCU in Paragraph 3.B. is necessary to do this modification. This Service Bulletin is covered by a dedicated schedule. To ensure a timely and effective return/upgrade program, advance scheduling is required through our In-Service Implementation Team (ISIT). Please contact your Regional Manager (RM), Field Service Representative (FSR) or Customer Service Representative (CSR) as soon as is practical to schedule your aircraft. Send units for modification to Bombardier Aerospace at the address given below: Learjet Core Returns 8219 West Irving, Bldg 9, Dock 9, Wichita, KS 67209 USA
NOTE : Bombardier Aerospace, Parts Logistics Montreal will maintain a rotable

pool of upgraded GCU units to support this program. When required, exchange GCU units will be supplied to the operators under the terms and conditions given below:

–The removed GCU, Part No. 761341A (604-90800-7), must be returned to Bombardier Aerospace, Parts Logistics in less than 10 days of receipt of the replacement unit, with documentation showing the serial number of the aircraft.

–If the removed GCU is not returned in less than 10 days, the operator will be charged for the replacement unit. The GCU, Part No. 761341B (604-90800-27), listed in Paragraph 3.B. is available at no cost for aircraft in and out of warranty if: (i) a no-charge purchase order is sent to Bombardier Aerospace in less than 36 months from this Service Bulletin release date (Basic Issue), During or after the above free period, Smart Parts Plus does not pay for the parts.MODEL CL-600-2B16

Basic Issue: Apr 25/2011 

# 604-24-023 Page 4 of 8 H. Tooling

GSE REFERENCE NO. PART NO. DESCRIPTION

GSE 10-10-30 - Protector, ADG Blade
GSE 24-00-24 - Tag, Circuit Breaker

NOTES : 1. Refer to the CL-604 Illustrated Tool and Equipment Manual to make

sure that you use the correct equipment configuration. 2. Refer to the Introduction of the publication listed in NOTE 1 for acceptable GSE equivalents. I. Weight and Balance No change.

J. Electrical Load Data No change.

K. References

–Bombardier Aerospace, Restriction and/or Special Instruction (RSI), C-4063, Rev. B.

–Bombardier Aerospace, Modification Summary, 600-6078, Rev. B2.

–Bombardier Aerospace, SB 604-24-024 “Modification – Air-Driven Generator (ADG) System – Replacement of ADG Power Feeder Cable”.

–Hamilton Sundstrand, Service Bulletin ERPS10G-24-1.

–CL-604 Aircraft Maintenance Manual (AMM), Chapters 6 and 24.

–CL-604 Standard Practice Manual (SPM), Chapters 20 and 51.

–CL-604 Operating Manual, PSP 604-6, Volume 1, Chapter 9.

L. Other Publications Affected

–None. M. Equivalent Service Bulletin For the CL-605 Challenger Aircraft, use SB 605-24-003.


### 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.MODEL CL-600-2B16

Basic Issue: Apr 25/2011 

# 604-24-023 Page 5 of 8 (2) Open the access door that follows:

ACCESS DESIGNATION

311BB Door, Aft Equipment Compartment (3) Open and tag the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP-1 C10 ADG DEPLOY SENSE 221

CBP-2 C10 ADG DEPLOY SENSE 222

CBP-2 N6 ADG DEPLOY CONT AUTO 222

CBP-2 N7 ADG DEPLOY CONT MAN 222

CBP-5 B10 ADG AUTO 311

CBP-5 B11 ADG MAN 311
(4) On aircraft, Serial No. 5774

, 5595 to 5665 , open and tag the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP-2 C11 ADG HEATER 222
(5) Do a manual extension of the dry ADG. Refer to TASK 24-23-01-840-805. (6) Install the protective covers on the ADG turbine blades.

B. Modification (1) Remove the old ADG GCU, Part No. 761341A (604-90800-7). Refer to TASK 24-23-10-000-801. (2) Install the new ADG GCU, Part No. 761341B (604-90800-27). Refer to the step that follows and TASK 24-23-10-400-801. (a) Torque the screws from 23 to 27 lbf in (2.60 to 3.05 Nm). Refer to SPM TASK 20-21-00-910-801. (b) Do the electrical bonding test for the GCU. Refer to SPM TASK 51-80-00-760-801.
NOTE : With the connectors P2XC and P5XC disconnected, make sure that the resistance value is not more than 0.010 ohm, between one of the connector receptacles J2 or J5 and the aircraft structure. (3) Connect the connectors P2XC and P5XC then do a retraction of the dry ADG after manual extension procedure. Refer to TASK 24-23-01-840-806.MODEL CL-600-2B16

Basic Issue: Apr 25/2011 

# 604-24-023 Page 6 of 8 C. Close-out /Testing (1) Close the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP-1 C10 ADG DEPLOY SENSE 221

CBP-2 C10 ADG DEPLOY SENSE 222

CBP-2 N6 ADG DEPLOY CONT AUTO 222

CBP-2 N7 ADG DEPLOY CONT MAN 222

CBP-5 B10 ADG AUTO 311

CBP-5 B11 ADG MAN 311
(2) On aircraft, Serial No. 5774

, 5595 to 5665 , close the circuit breakers that follow:

CB PANEL CB NO. NAME ZONE

CBP-2 C11 ADG HEATER 222
(3) Remove all tools, equipment, and unwanted materials from the work area. (4) Close the access door that follows:

ACCESS DESIGNATION

311BB Door, Aft Equipment Compartment (5) Do an ADG operational test (Operating Manual (Vol. 1) IN

í FLIGHT CHECKS, Air

í Driven Generator Checks). D. 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: Apr 25/2011 

# 604-24-023 Page 7 of 8 

### 3. MATERIAL INFORMATION

A. Kit No kits required.

B. Parts The part that follows is necessary to do this Service Bulletin and is available from Bombardier Aerospace Parts Logistics, Montreal:

NEW PART NO. QTY ITEM USED PART NO. INSTRUCTIONS -

DISPOSITION

761341B (604-90800-27) 1 GCU 761341A (604-90800-7) Refer to

Paragraph 1.G.

NOTE : The part number for the item listed above is 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.
C. Material The material that follows, or equivalent, is necessary to do this Service Bulletin. It can be purchased from a local supplier. Bombardier Aerospace does not pay for this consumable.

DESCRIPTION PART

No./NAME SPECIFICATION QUANTITY SUPPLIER (See Note) Coating Chemical Conversion Alodine 1000 MIL-PRF-81706 As Necessary Code: A

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.MODEL CL-600-2B16

Basic Issue: Apr 25/2011 

# 604-24-023 Page 8 of 8 SUPPLIERS ADDRESSES BY CODES

Code: A Henkel Surface Technologies 32100 Stephenson Highway Madison Heights, MI 48071 Tel: 1-248-583-9300 www.henkel.com

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: 604-24-023 ISSUE: Basic DATED: Apr 25/2011

TITLE: Modification – Emergency AC Generation System – Replace the Air Driven Generator (ADG) Generator Control Unit (GCU)

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:

051PM 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 – “604-24-023”BOMBARDIERSUBMISSION 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

604-24-023 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 (dd/mm/yy) Signature not required if sent by E-Mail-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --



### Bombardier Business Aircraft Customer Services (BBACS)

P.O. Box 6087, Station Centre-ville Montréal, Québec, Canada H3C 3G9

Attention : Customer Support Department, Maintenance Engineering

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