Basic Issue: Oct 31/2013 100-27-16

 Page 1 of 1 

SERVICE BULLETIN SUMMARY 

This Service Bulletin is available at: 

www.cic.bombardier.com

MODEL BD-100-1A10 (CL-300)

ATA 27-61 

FLIGHT CONTROLS 

SPECIAL CHECK/MODIFICATION – CONTROL AND INDICATION SYSTEM – 

SOFTWARE CHANGE TO IMPROVE SPOILER ELECTRONIC CONTROL UNIT 

(SECU) RELIABILITY AND TO ELIMINATE A NON-COMPLIANCE IN THE ROLL 

DISCONNECT LOGIC 

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 

Before 31 Oct 2018 

EFFECTIVITY: A/C Serial No. 20003 to 20407 

MANPOWER: 4 man-hours are necessary to upgrade one SECU. 

6 man-hours are necessary to upgrade two SECUs. 

CONTINUED AIRWORTHINESS (CAW) 

FLEET CAMPAIGN 

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: SB 100-27-09 is a prerequisite and must be 

done before or at the same time as this Service Bulletin. 

NOTE: This Service Bulletin is expected to become the subject of an Airworthiness 

Directive which will make it necessary to implement this Service Bulletin. 

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. 

© 2013 Bombardier Inc. All rights reserved 

Learjet, Challenger, Global, are registered trademarks of Bombardier Inc. or its subsidiaries. 

Basic Issue: Oct 31/2013 100-27-16

 Page 1 of 8 

SERVICE BULLETIN 

This Service Bulletin is available at: 

www.cic.bombardier.com 

MODEL BD-100-1A10 (CL-300)

ATA 27-61 

FLIGHT CONTROLS 

SPECIAL CHECK/MODIFICATION – CONTROL AND INDICATION SYSTEM – 

SOFTWARE CHANGE TO IMPROVE SPOILER ELECTRONIC CONTROL UNIT 

(SECU) RELIABILITY AND TO ELIMINATE A NON-COMPLIANCE IN THE ROLL 

DISCONNECT LOGIC 

1. PLANNING INFORMATION 

NOTE: This Service Bulletin also includes Instructions for SECUs in the operator’s 

stockroom. 

A. Effectivity 

BD-100-1A10 aircraft, Serial No. 20003 to 20407. 

All other subsequent BD-100-1A10 aircraft are scheduled for the modification 

in production (Ref.: Modification Summary 100T010596). 

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. 
MODEL BD-100-1A10 (CL-300) 

Basic Issue: Oct 31/2013 100-27-16

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B. Reason 

As the throttle lever is moved slowly from “AT IDLE” position, the throttle quadrant 

assembly (TQA) switch will pass through an indeterminate state. If the duration of 

the indeterminate state is more than the Spoiler Systems monitor threshold, a 

cyan “SPOILERS FAULT” or an amber “SPOILERS FAIL” Engine Indication and 

Crew Alerting System (EICAS)” message will be posted by the Spoiler System. 

The SECU software has been improved to disable TQA switch monitoring when 

the Throttle Lever is in the range of the switch’s intermediate state. 

Also, an extremely unlikely timing difference between Command and Monitor 

channels, coupled with an intermittently failed Roll Disconnect Switch, could 

cause the complete loss of spoiler functionality. 

This Service Bulletin introduces a modification to the SECU software to correct 

this timing error and prevent the loss of both SECUs under these conditions thus 

maintaining spoiler functionality. 

C. Description 

This Service Bulletin gives instructions to: 

– Get access to the SECU, 

– Verify the SECU Part Number, 

– Remove the SECU if necessary, 

– Upgrade the SECU software if necessary, 

– Reidentify the upgraded SECU if necessary, 

– Install the upgraded SECU if necessary, and 

– Do the necessary tests to make sure that the system operates correctly. 

D. Compliance 

Recommended to be incorporated before 31 Oct 2018. 

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 

in accordance with established procedures. 
MODEL BD-100-1A10 (CL-300) 

Basic Issue: Oct 31/2013 100-27-16

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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 100-00-02. 

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. 

4 man-hours are necessary to upgrade one SECU. 

6 man-hours are necessary to upgrade two SECUs. 

The labor required to do this Service Bulletin is at no cost 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), and 

(iii) this Service Bulletin is scheduled within the compliance time. 

G. Material - Cost and Availability 

No kit is necessary to do this modification. For the parts necessary to do this 

modification on SECU Part No. C47330-006, C47330-007 or C47330-008, 

refer to Paragraph 3.B. 

These parts are available at no cost if a no-charge purchase order is sent to 

Bombardier Aerospace within the compliance time. 

For SECUs, Part No, C47330-006, C47330-007 and C47330-008 in the operator’s 

stock room, send units for upgrade by Moog, to Bombardier Aerospace at one of 

the two addresses given below: 

Learjet – Core Returns 

8219 West Irving, Bldg 9, Dock 9, 

Wichita, KS 67209 

USA 

or 

Distribution Centre Frankfurt – Core Returns 

Bombardier Aerospace Germany GmbH 

Hans-Boeckler-Strasse 9 

GROSS-GERAU Hesse 64521 

Germany 
MODEL BD-100-1A10 (CL-300) 

Basic Issue: Oct 31/2013 100-27-16

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Refer to your Material Return Authorization (MRA) form to find the applicable 

return address. 

During or after the above free period, Smart Parts Plus does not pay for the parts 

required to complete this software change. 

H. Tooling 

The equipment and tools listed below are necessary to do this modification: 

GSE REFERENCE NO. PART NO. DESCRIPTION 

20X-00-04 M1-G-KIT or 

equivalent 

Portable Bonding Tester 

24-00-24 S4933959-501 Tag, Circuit Breaker 

- CB59838-001 Wire Harness (Note 3) 

- CB60286-001 Software, CDROM (Note 3) 

Commercially Available - Laptop with Windows XP or 

Windows 7 operating system, 

an RS-232 Serial or USB 2.0 

Port, a USB-to-Serial adapter 

cable and a CD drive. 

Commercially Available - Power Supply (28Vdc and 2A) 

NOTES: 1. Refer to the BD-100 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 acceptable GSE 

equivalents. 

3. The wire harness and CDROM necessary to complete this Service 

Bulletin will be available at each BAS and from Bombardier Aerospace 

Parts Services for rental. 

I. Weight and Balance 

No change. 

J. Electrical Load Data 

No change. 
MODEL BD-100-1A10 (CL-300) 

Basic Issue: Oct 31/2013 100-27-16

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K. References 

– Bombardier Aerospace, Modification Summary, 100T010596, Rev. C. 

– Bombardier Aerospace, Modification Summary, BB100T010721, Rev. A. 

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

C-100-000-27-0300, Rev. --1. 

– Bombardier Aerospace, Kit Drawing K1000070295, Rev. --. 

– Bombardier Aerospace, Standard Practices Manual (SPM), Chapter 51. 

– Bombardier Aerospace, SB 100-00-02 “Service Bulletin Description and Policy”. 

– Bombardier Aerospace, SB 100-27-09, Rev. 02 “Modification – Multi-Function 

Spoiler – Introduction of the Spoiler Electronic Control Unit (SECU) Part No. 

C47330-006 or C47330-007”. 

– BD-100 Aircraft Maintenance Manual (AMM), Chapters 6, 24, 27 and 51. 

– BD-100 Aircraft Illustrated Parts Catalog (AIPC), Chapter 27. 

– Moog, Service Bulletin C47330-27-02, Rev. 1 “Flight Controls: Spoiler 

Electronic Control Unit (SECU) Software Upgrade” (attached). 

– Moog, Service Bulletin C47330-27-03, Rev. 1 “Flight Controls: Spoiler 

Electronic Control Unit (SECU) Software Upgrade” (attached). 

– Moog, Service Bulletin C47330-27-04, Rev. 1 “Flight Controls: Spoiler 

Electronic Control Unit (SECU) Software Upgrade” (attached). 

L. Other Publications Affected 

BD-100 Aircraft Illustrated Parts Catalog (AIPC), Chapter 27. 

M. Equivalent Service Bulletins 

None. 
MODEL BD-100-1A10 (CL-300) 

Basic Issue: Oct 31/2013 100-27-16

 Page 6 of 8 

2. ACCOMPLISHMENT INSTRUCTIONS 

NOTES: 1. All TASKs given in the procedures that follow are from the BD-100 

Aircraft Maintenance Manual unless otherwise specified. 

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

the BD-100 Aircraft Maintenance Manual, Chapter 6. 

A. Aircraft Setup 

(1) Obey all electrical/electronic safety precautions. Refer to 

TASK 24-00-00-910-801. 

(2) Obey all electrostatic safety precautions. Refer to TASK 24-00-00-910-802. 

B. PART A – Inspection of SECU A118 and SECU A119 

Verify the part number of SECU A118 and SECU A119. 

NOTES: 1. The SECU A118 and SECU A119 are located in the right equipment 

rack. Refer to TASK 27-61-00-992-801. 

 2. For SECU Part No. C47330-006, C47330-007 or C47330-008 in the 

operator’s stock room, refer to Paragraph 1.G. for disposition. 

(a) For aircraft with SECU Part No. C47330-006, C47330-007 or 

C47330-008, continue with PART B of this Service Bulletin. 

(b) For aircraft with SECU Part No. C47330-009, C47330-010 or 

C47330-011, continue with Close-out. 

C. PART B – Modification of SECU, Part No. C47330-006, C47330-007 or 

C47330-008 

CAUTION: OBEY ALL ELECTROSTATIC DISCHARGE SAFETY PRECAUTIONS 

WHEN YOU DO MAINTENANCE ON ELECTROSTATIC DISCHARGE 

SENSITIVE (ESDS) COMPONENTS. STATIC VOLTAGE CAN CAUSE 

DAMAGE TO ESDS COMPONENTS. 

(1) Remove SECU A118 and/or SECU A119 as necessary. Refer to 

TASK 27-61-05-000-801. 

(2) Incorporate the applicable Moog Service Bulletin as follows: 

SECU Part No. Moog Service Bulletin. 

C47330-006 C47330-27-02 

C47330-007 C47330-27-03 

C47330-008 C47330-27-04 

(3) Re-identify the upgraded SECU per the related Moog Service Bulletin. 

(4) Install the upgraded SECU A118 and/or SECU A119 as necessary. Refer to 

TASK 27-61-05-400-801. 
MODEL BD-100-1A10 (CL-300) 

Basic Issue: Oct 31/2013 100-27-16

 Page 7 of 8 

(5) Do the electrical bonding of the SECU A118 and/or SECU A119. Refer to 

SPM TASK 51-80-00-760-801. 

NOTE: The maximum allowable resistance is 5 milliohms between the 

avionics rack and the bare screws at the bottom of the front face 

of the SECU. 

D. Testing 

(1) Do the electronic rigging of the SECU A118 and/or SECU A119 as necessary. 

Refer to TASK 27-61-05-820-802. 

(2) Do the operational test of the spoiler system. Refer to 

TASK 27-61-00-710-801. 

E. Close-out 

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

F. 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 are necessary to do this Service Bulletin and are available 

from Bombardier Aerospace Parts Services, Montreal. 

NEW 

PART NO. 

QTY ITEM USED 

PART NO. 

INSTRUCTIONS - 

DISPOSITION 

CB68209-001 

or 

CB68210-001 

or 

CB68211-001 

2 Label (Note 1) 

Label (Note 2) 

Label (Note 3) 

- - 

NOTES: 1. For SECU, Part No, C47330-006, upgraded to Part No. C47330-006A. 

2. For SECU, Part No, C47330-007, upgraded to Part No. C47330-007A. 

3. For SECU, Part No, C47330-008, upgraded to Part No. C47330-008A. 
MODEL BD-100-1A10 (CL-300) 

Basic Issue: Oct 31/2013 100-27-16

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C. Material 

The materials that follow 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)

Isopropyl 

Alcohol 

- TT-I-735 As 

Necessary 

Code: A 

Sealant 

CT: 5 hours 

or 

Clear Coat 

- MIL-V-173C 

or 

A38662-20 

or equivalent 

As 

Necessary 

Code: A 

NOTES: 1. Refer to the table that follows for the supplier’s address listed by 

code. 

2. 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 

Commercially Available 

D. Publications 

No publications required. 
SERVICE BULLETIN EVALUATION FORM 

(Your ideas will help us provide better bulletins) 

SERVICE BULLETIN: 100-27-16 ISSUE: Basic DATED: Oct 31/2013 

 

TITLE: Special Check/Modification – Control and Indication System – Software Change to 

Improve Spoiler Electronic Control Unit (SECU) Reliability and to Eliminate a 

Non-Compliance in the Roll Disconnect Logic 

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 – “100-27-16” 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 

 100-27-16 Basic PART A 

 “ “ PART B 

 - - - 

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 

Montreal, Québec, Canada H3C 3G9 

Attention: Customer Support Department, Maintenance Engineering 

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