# Bombardier Service Bulletin 650-32-006

Copy: No revision named ("SB 650-32-006 Basic"), 12 pages: PDF https://openairdocs.org/files/sha256/37/10/37107697baa5fcdebe297b5d08efe0afd27da07502c9186c2e0ea284e0e27fde; text https://openairdocs.org/service-documents/bombardier/sb-650-32-006/file/37107697baa5.md. Rights: © Bombardier Inc. Filed by the FAA in regulations.gov docket FAA-2023-2402; AD 2024-07-10 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: 650-32-006
- Page: https://openairdocs.org/service-documents/bombardier/sb-650-32-006

## ADs that cite it (1) (OpenAirDocs)

Newest first, with the revision each names, as OpenAirDocs read it from the AD's text.

- [AD 2024-07-10](https://openairdocs.org/ad/2024-07-10.md), effective Jun 6, 2024: No revision named

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/bombardier/sb-650-32-006/proposed.md).

## Text (12 pages)

Rights: © Bombardier Inc. Filed by the FAA in regulations.gov docket FAA-2023-2402; AD 2024-07-10 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

SPECIAL CHECK/MODIFICATION – NOSEWHEEL STEERING –
REPLACEMENT OF ELECTRONIC CONTROL MODULE (ECM)
The information below is provided for your reference. For full details, including labor and part
coverage, please see corresponding paragraph contained within this bulletin.
RECOMMENDED
SPECIFIED TIME COMPLIANCE
COMPLIANCE TIME
Refer to Paragraph 1.D.
EFFECTIVITY: A/C Serial No. 6050 to 6171
MANPOWER: Refer to Paragraph 1.F.
CONTINUED AIRWORTHINESS (CAW)
FLEET CAMPAIGN YES NO
TLMC, CH 5 AFFECTED NOYES
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: This Service Bulletin may be subject to an Airworthiness Directive, which will make
it necessary to implement this Service Bulletin.
To place an order for parts, please call Bombardier Aviation Parts Services at:
514−855−2999 or 1−866−538−1247
SERVICE BULLETIN SUMMARY
my.businessaircraft.bombardier.com
MODEL CL−600−2B16
ATA 32−51
LANDING GEAR
Basic Issue: Oct 18/2021 650−32−006
Page 1 of 1
This Service Bulletin is available at:

### Page 2

SPECIAL CHECK/MODIFICATION – NOSEWHEEL STEERING –
REPLACEMENT OF ELECTRONIC CONTROL MODULE (ECM)
1. PLANNING INFORMATION
NOTES:1 . Before you do this Service Bulletin, examine all STC, STA or
equivalent action changes to make sure that this Service Bulletin can
be completed.
2. This Service Bulletin is covered by a dedicated schedule. Dedicated
schedules are used to reserve and manage inventory due to limited
availability of rotable stock, parts and/or kits. Parts are limited, therefore,
advance part scheduling with our In−Service Implementation Team (ISIT)
is recommended prior to a maintenance visit. They can be reached at
bacs_isit@aero.bombardier.com. The parts will be allocated on a first
come first serve basis.
Should you require additional information, please contact your Regional
Sales Manager (RM) or Field Service Representative (FSR).
For more information on dedicated schedules, refer to SB 650−00−002.
3. This Service Bulletin is also applicable for Electronic Control Module
(ECM), Part No. 601−86100−27 (MDI Part No. 7040−19) in the operator’s
stock room.
A. Effectivity
CL−600−2B16 aircraft, Serial No. 6050 to 6171.
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 Aviation Service Bulletin(s).
SERVICE BULLETIN
my.businessaircraft.bombardier.com
MODEL CL−600−2B16
ATA 32−51
LANDING GEAR
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.
 2021 Bombardier Inc.  All rights reserved
Learjet, Challenger, Global, are registered trademarks of Bombardier Inc. or its subsidiaries.
Basic Issue: Oct 18/2021 650−32−006
Page 1 of 9
This Service Bulletin is available at:

### Page 3

TABLE 1 – SERIAL NUMBERS OF AFFECTED ELECTRONIC CONTROL
MODULE (ECM)
PART NO. SERIAL NUMBERS
601−86100−27
(MDI, Part No. 7040−19)
14022867, 14028024, 17053913, 17053914,
17055007, 17055008, 18058182, 18058183,
18058603, 18058604, 18059639, 18059640,
18060725, 18060726, 18061882, 18061883,
18063372, 18063373, 18065333, 18065334,
18065335, 19068029, 19068030, 19068031,
19068032, 19068034, 19068035, 19068036,
19068037, 19068038, 19068039, 19068040,
19068041, 19068042, 19068043, 19068044,
20077629, 20077630, 20077631 and 20077634.
B. Reason
1. Condition:
The existing ECM fitted with AEF filter plate is susceptible under HIRF, Radio
Frequency Susceptibility (Conducted & Radiated). This can result in a potential
malfunction of the Nose Wheel Steering (NWS) System.
2. Objective/Benefit:
This Service Bulletin introduces a procedure to inspect and to identify the serial
numbers of all ECM Part No. 601−86100−27 (MDI Part No. 7040−19) fitted with
the AEF filter plate which shall be replaced with ECM units fitted with the
Spectrum Filter Plate.
C. Description
This Service Bulletin gives instructions in PART A, to:
− Examine the serial number of existing ECM with the affected list per
Paragraph 1.A., Table 1,
− If the serial number of the ECM is not in the affected list or is re−identified as
SB−1, no further action is necessary. Go to Paragraph 2.E., Close−out, and
− If the serial number of the ECM is in the affected list, do PART B of this Service
Bulletin to replace the existing ECM.
This Service Bulletin gives instructions in PART B, to:
− Remove the ECM,
− Return the removed ECM for a new or upgraded unit, and
− Install the ECM.
MODEL CL−600−2B16
Basic Issue: Oct 18/2021 650−32−006
Page 2 of 9

### Page 4

After PART B, as applicable:
− Do the necessary tests to make sure that the system operates correctly.
D. Compliance
Specified Time Compliance
Recommended within 35 months from this Service Bulletin release date (Basic
Issue).
NOTE: If it is not possible to complete all the instructions in this Service Bulletin
because of the aircraft configuration, submit an SRPSA for analysis and to
get an approved disposition to complete this Service Bulletin.
Standard SRPSA fees may apply. Refer to the Services section of the
Bombardier customer portal for the latest prices, rates and fees.
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 EASA
under the Canada/EU bilateral Aviation Safety Agreement.
F. Manpower
NOTE: The man−hours given are to help you schedule the tasks given in this
Service Bulletin. The man−hours 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, refer to SB 650−00−002.
0.5 man−hour is necessary to do PART A of this Service Bulletin.
Bombardier Aviation does not pay for the labor to do PART A of this Service
Bulletin.
5 man−hours are necessary to do PART B of this Service Bulletin.
The labor required to do PART B of this Service Bulletin is at no cost if:
− the work is done at Bombardier Business Aviation Services (BBAS) or
Authorized Service Facilities (ASF), and
− this Service Bulletin is scheduled in less than 35 months from its release date
(Basic Issue).
MODEL CL−600−2B16
Basic Issue: Oct 18/2021 650−32−006
Page 3 of 9

### Page 5

G. Material − Cost and Availability
No kit is necessary to do this Service Bulletin.
ECM, Part No. 601−86100−27, may be necessary to do this modification and is
available at no cost if a no−charge purchase order is sent to Bombardier Aviation in
less than 35 months from this Service Bulletin release date (Basic Issue).
This Service Bulletin is covered by a dedicated schedule. Dedicated schedules are
used to reserve and manage inventory due to limited availability of rotable stock,
parts and/or kits. Parts are limited, therefore, advance part scheduling with our
In−Service Implementation Team (ISIT) is recommended prior to a maintenance
visit. They can be reached at bacs_isit@aero.bombardier.com. The parts will be
allocated on a first come first serve basis.
Should you require additional information, please contact your Regional Sales
Manager (RM) or Field Service Representative (FSR).
For more information on dedicated schedules, refer to SB 650−00−002.
Send the removed ECM, Part No. 601−86100−27, fitted with AEF filter plate to
either of the addresses shown below in exchange for a new or a reworked ECM,
Part No. 601−86100−27, fitted with spectrum filter plate.
Learjet Inc. − Core Returns
251−A Wille Road
Des Plaines, Illinois
60018−1861
USA
or
Distribution Centre Frankfurt − Core Returns
Bombardier Aviation Company GmbH
Hans−Boeckler−Strasse 9
GROSS−GERAU Hesse 64521
Germany
Refer to your Material Return Authorization (MRA) form to find the applicable return
address.
NOTE: Bombardier Aviation is maintaining a rotable pool of replacement ECM to
be supplied to the operators under the terms and conditions given below:
− The removed ECM must be returned to Bombardier Aviation, Parts
Services in less than 10 days for domestic shipments and 15 days for
international shipments of receipt of replacement unit.
− If the removed ECM is not returned within the time period, the operator
will be charged for the replacement units at full cost.
MODEL CL−600−2B16
Basic Issue: Oct 18/2021 650−32−006
Page 4 of 9

### Page 6

For all parts transactions, Bombardier Aviation’s current Spare Parts and
Component Repair Price Catalogue General Terms and Conditions apply. These
terms and conditions are found on the Bombardier Customer Portal at:
my.businessaircraft.bombardier.com
Smart Parts does not pay for this recommended Service Bulletin at any time.
H. Tooling
The equipment and tools listed below are necessary to do this Service Bulletin:
GSE REFERENCE NO. PART NO. DESCRIPTION
24−00−24 S4933959−501 Tag, Circuit Breaker
Commercially Available − Wrench, Torque
NOTES: 1. Refer to the CL−650, Illustrated Tool and Equipment Manual (ITEM)
to make sure that you use the correct equipment configuration.
2. Refer to the Liability Statement in the ITEM for the CL−650, for
acceptable GSE equivalents.
3. This list is provided for quick reference. In case of discrepancy
between this list and the tools called in the SPM, WM, Chapter 20,
then the tools called in the SPM, WM prevail. Other approved
alternative tools are acceptable and can also be used.
I. Weight and Balance
No change.
J. Electrical Load Data
No change.
K. References
− TCCA Airworthiness Directive, (pending).
− Bombardier Aviation, Restriction and/or Special Instruction (RSI), C−4273,
Rev. A.
− Safran Landing Systems, Service Bulletin No. SB7040−32−001 (attached).
− CL−650 Aircraft Maintenance Manual (AMM), Chapters 6, 12, 24, 32 and 53.
L. Other Publications Affected
− CL−650 Aircraft Illustrated Parts Catalog (AIPC), Chapter 32.
M. Equivalent Service Bulletins
− For the Challenger 604 aircraft, use Service Bulletin 604−32−032.
MODEL CL−600−2B16
Basic Issue: Oct 18/2021 650−32−006
Page 5 of 9

### Page 7

− For the Challenger 605 aircraft, use Service Bulletin 605−32−009.
2. ACCOMPLISHMENT INSTRUCTIONS
NOTES: 1. All TASKs given in the procedures that follow are from the CL−650,
Aircraft Maintenance Manual unless otherwise specified.
2. All references made to zones, access panels and/or doors, are from the
CL−650, Aircraft Maintenance Manual, Chapter 6.
A. Aircraft Setup
(1) Obey all electrical/electronic safety precautions. Refer to
AMM 24−00−00−910−801.
(2) Remove the external AC power. Refer to AMM 12−00−07−861−802.
(3) Open and tag the circuit breakers that follow:
CB PANEL CB NO. NAME ZONE
CBP−1 F6 NOSE STEER 221
CBP−2 F6 NOSE STEER 222
(4) Remove the flight compartment floor−panel (221CLF). Refer to
AMM 53−01−01−000−801.
B. PART A — Special Check
NOTE: If it is not possible to complete all the instructions in this Service Bulletin
because of the configuration of the aircraft, submit an SRPSA for analysis
and to get an approved disposition to complete this Service Bulletin.
(1) Examine the serial number of the ECM, Part No. 601−86100−27 (MDI, Part
No. 7040−19), with the affected list in Paragraph 1.A., TABLE 1.
(a) If the serial number of the ECM is not in the affected list or is re−identified
as SB−1, no further action is necessary. Go to Paragraph 2.E., Close−out.
(b) If the serial number of the ECM is in the affected list, do PART B of this
Service Bulletin.
C. PART B — Modification
NOTE: If it is not possible to complete all the instructions in this Service Bulletin
because of the configuration of the aircraft, submit an SRPSA for analysis
and to get an approved disposition to complete this Service Bulletin.
(1) Remove the ECM, Part No. 601−86100−27. Refer to
AMM 32−51−31−000−801.
(2) Send the removed ECM, Part No. 601−86100−27 (MDI, Part No. 7040−19), for
rework to the address shown in Paragraph 1.G.
MODEL CL−600−2B16
Basic Issue: Oct 18/2021 650−32−006
Page 6 of 9

### Page 8

(3) Install a new or the reworked ECM, Part No. 601−86100−27 (MDI, Part
No. 7040−19), fitted with spectrum filter plate. Refer to
AMM 32−51−31−400−801.
NOTES: 1. If a new ECM is used, make sure that the serial number of new
ECM is not in the affected list shown in TABLE 1.
2. If a reworked ECM is used, make sure that the ECM is
re−identified as SB−1, in the nameplate. Refer to Figure 1.
3. If necessary, it is permissible to use any other ECM other than
Part No. 601−86100−27 valid for the aircraft model.
D. Testing
(1) Remove the tags and close the circuit breakers that follow:
CB PANEL CB NO. NAME ZONE
CBP−1 F6 NOSE STEER 221
CBP−2 F6 NOSE STEER 222
(2) Do the operational test of the nosewheel−steering system. Refer to
AMM 32−51−00−710−801.
E. Close−out
(1) Remove all tools, equipment and unwanted materials from the aircraft.
(2) Install the flight compartment floor−panel (221CLF). Refer to
AMM 53−01−01−400−801.
F. Stock Purge
(1) Verify the Serial No. of all spare ECM units with Part No. 601−86100−27 (MDI
Part No. 7040−19) per Paragraph 1.A., TABLE 1.
(2) If the ECM is affected, do Paragraph 2.C. of this Service Bulletin.
NOTE: The instructions above are applicable to Bombardier Business
Aviation Services (BBAS), Completion Centers, Authorized Service
Facilities, Spare Parts Center, Montreal, and operator’s stock rooms.
G. 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: Oct 18/2021 650−32−006
Page 7 of 9

### Page 9

For information, correction(s), comment(s) and/or feedback regarding Service
Bulletins released on the Customer Portal, please contact the Service Bulletin
Group at the following email address:
bbad_SBgroup@aero.bombardier.com
3. MATERIAL INFORMATION
A. Kit
No kits required.
B. Parts
The part that follows may be necessary to do this Service Bulletin and is available
from Bombardier Aviation Parts Services, Montreal:
NEW PART NO. QTY ITEM USED PARTNO. INSTRUCTIONS- DISPOSITION
601−86100−27
(See Notes) 1
Electronic
Control Module
(ECM)
601−86100−27 Refer toParagraph 1.G.
NOTES: 1. 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.
2. If a new ECM is used, make sure that the serial number of new ECM
is not in the affected list shown in TABLE 1.
3. If a reworked ECM is used, make sure that the ECM is re−identified
as SB−1, in the nameplate. Refer to Figure 1.
4. If necessary, it is permissible to use any other ECM other than Part
No. 601−86100−27 valid for the aircraft model.
C. Material
No materials required.
D. Publications
The publication that follows is required after this Service Bulletin has been
incorporated.
− CL−650 Aircraft Illustrated Parts Catalog (AIPC), Revision 23 dated
Aug 27/2021 or later approved revisions as applicable.
MODEL CL−600−2B16
Basic Issue: Oct 18/2021 650−32−006
Page 8 of 9

### Page 10

SB650−32−006_001
7040−19
ELECTRONIC CONTROL MODULE
P/N S/N
DATE
INSP
Safran Electronics & Defense Canada
Peterborough Ontario Canada CAGE L8794
CANADAIR
SLS P/N
SEDC P/N
SB−1
601−86100−27
22000−05
22221−11
MODEL CL−600−2B16
ECM 601−86100−27 (7040−19) Nameplate Marking
Figure 1
Basic Issue: Oct 18/2021 650−32−006
Page 9 of 9

### Page 11

650−32−006 Basic Oct 18/2021
SPECIAL CHECK/MODIFICATION – NOSEWHEEL STEERING –
REPLACEMENT OF ELECTRONIC CONTROL MODULE (ECM)
bbad_SBgroup@aero.bombardier.com
NOTE: Please use Salesforce only for troubleshooting issues or when Engineering
deviation is necessary to accomplish the Service Bulletin modification.
SERVICE BULLETIN EVALUATION FORM
(Your ideas will help us provide better bulletins)
SERVICE BULLETIN: ISSUE: DATED:
TITLE:
For any information, correction(s), comment(s) and/or feedback regarding Service
Bulletins released on the Customer Portal, please contact the Service Bulletin Group
at the following email address:

### Page 12

SERVICE BULLETIN INCORPORATION SHEET − "650−32−006"
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 you’re reporting Service Bulletin (SB) Incorporations to CAMP, sending
this Incorporation Sheet to Bombardier is not mandatory. If your aircraft is
on another tracking system, please contact Bombardier to make arrangements
for automated data submission.
650−32−006 Basic
COMPLIED WITH
YES    NO    N/A
PART A
PART B
Actual hours to accomplish Service Bulletin:
* NOTES:
Aircraft Serial No. Aircraft Reg. No.
Airframe Hours: Airframe Landings
S.B. Incorporation Date Service Order No.
Facility incorporating S.B.
Name Signature Date
BOMBARDIER
SUBMISSION
Service Bulletin
Number
Rev. * Parts
Completed
Remarks/Reason
(Mandatory if N/A)
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.
3. When more than one part is carried out at the same time, each part should
be reported.
4. Fill in ’Remark/Reason’ to explain compliance method when N/A is selected.(E.g. Part
not installed, N/A by effectivity, N/A by Part Serial Number, etc.
5. PCW means ’Previously Complied With’.
(dd/mm/yy)
Signature not required if sent by E−Mail (dd/mm/yy)

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