May 10/2013 A700-26-5002 

Page 1 of 1 

ALERT SERVICE BULLETIN INFORMATION SHEET 

MODEL BD-700-1A11 (BD-700) 

ATA 26-21 

FIRE PROTECTION 

SPECIAL CHECK/REPLACEMENT – FIRE EXTINGUISING SYSTEM – 

INSPECTION OF CHECK TEE, PART NO 446651 

Service Bulletin No.: A700-26-5002 Issue: Basic Dated: Apr 18/2013

The following data is supplied for information only. No revision to the Service Bulletin 

is necessary. 

Keep this Information Sheet with subject Service Bulletin and discard Service Bulletin 

dated Apr 24/2013. 

This Alert Service Bulletin Information Sheet is issued to inform operators that this 

Alert Service Bulletin is now managed by a dedicated schedule. The changes are 

listed as follows: 

 1. A statement has been added to Paragraph 1.G. to read as follows: 

1.G. Material – Cost and Availability 

This Alert 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. 

2. A typographical error in Section (3).(b) of Paragraph 2.C. is corrected to read as 

follows: 

 2.C. PART B: Inspection and/or Replacement of Check Tee Fitting(s). 

(3) Carry out the accomplishment instructions in the attached Kidde 

Aerospace and Defense Service Bulletin, 446651-26-494. 

a) If the check tee fitting failed the depth check, remove and replace the 

check tee fitting. Refer to TASKS 26-21-45-000-801 and 

26-21-45-400-801. 

b) If the check tee fitting passed to depth check, re-identify the check tee 

fitting in accordance with Kidde Aerospace and Defense Service 

Bulletin, 446651-26-494 and go to step 2.C.(4). 
Basic Issue: Apr 18/2013 A700-26-5002

 Page 1 of 1 

ALERT SERVICE BULLETIN SUMMARY 

This Service Bulletin is available at: 

www.cic.bombardier.com

MODEL BD-700-1A11 (BD-700)

ATA 26-21 

FIRE PROTECTION 

SPECIAL CHECK/REPLACEMENT – FIRE EXTINGUISHING SYSTEM – 

INSPECTION OF CHECK TEE, PART NO. 446651 

The information below is provided for your reference. For full details, please 

see corresponding paragraph contained within this bulletin. 

ALERT 

SPECIFIED TIME COMPLIANCE

COMPLIANCE TIME 

Within 100 flight hours from this Service 

Bulletin release date (Basic Issue)

EFFECTIVITY: A/C Serial No. 9386, 9401 and 9445 to 9498 

MANPOWER: Refer to Paragraph 1.F. 

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: N/A 

To place an order for parts, 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: Apr 18/2013 A700-26-5002

 Page 1 of 9 

ALERT SERVICE BULLETIN 

This Service Bulletin is available at: 

www.cic.bombardier.com

MODEL BD-700-1A11 (BD-700)

ATA 26-21 

FIRE PROTECTION 

SPECIAL CHECK/REPLACEMENT – FIRE EXTINGUISHING SYSTEM – 

INSPECTION OF CHECK TEE, PART NO. 446651 

1. PLANNING INFORMATION

NOTE: Before performing PART B, make sure your schedule allows a minimum of 

24 hours downtime, should a replacement check tee fitting be required. 

A. Effectivity 

BD-700-1A11 aircraft, Serial No. 9386, 9401 and 9445 to 9498. 

All other subsequent BD-700-1A11 aircraft are scheduled for the modification in 

production. 

NOTE: The instructions given in this Alert 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 Alert Service Bulletin introduces an inspection of the three check tee fittings 

installed in the engine and APU fire extinguishing system. It was reported that a 

check tee fitting was found with two balls installed. Only one ball is installed in the 

body of the check tee fitting. If two balls are installed in the body of the check tee 

fitting, the flow of the fire extinguishing agent is partially restricted. This restriction 

can cause insufficient concentration of fire extinguishing agent necessary to 

suppress an engine or APU fire. 
MODEL BD-700-1A11 (BD-700) 

Basic Issue: Apr 18/2013 A700-26-5002

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C. Description 

This Alert Service Bulletin gives instructions in PART A to: 

– Open the aft equipment-compartment door (311BB), 

– Visually check the serial numbers, and 

– Close the aft equipment-compartment door (311BB). 

This Alert Service Bulletin gives instructions in PART B to: 

– Disconnect one of the two discharge lines from check tee fitting, 

– Measure the depth to the ball in the body of the check tee fitting, 

– Replace the check tee fitting if it fails the depth check, or re-identify the check 

tee fitting if it passes the depth check, 

– Connect the discharge line to the check tee fitting and 

– Close the aft equipment-compartment door (311BB). 

D. Compliance 

This Alert Service Bulletin is recommended within 100 flight hours from this 

Service Bulletin release date (Basic Issue). 

NOTES: 1. The issuance of an Airworthiness Directive to incorporate this Alert 

Service Bulletin is expected to be released by Transport Canada Civil 

Aviation. 

 2. This Alert Service Bulletin is in reference to Advisory Wire 

AW700-26-0424. 

E. Approval 

The technical content of this Alert 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 Alert Service Bulletin is accepted by the 

FAA under the Canada/USA bilateral Aviation Safety Agreement. 

2. The technical content of this Alert Service Bulletin is accepted by 

EASA in accordance with established procedures. 
MODEL BD-700-1A11 (BD-700) 

Basic Issue: Apr 18/2013 A700-26-5002

 Page 3 of 9 

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 700-00-5002. 

2. This Alert 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 Alert 

Service Bulletin. 

PART A: 1 man-hour is necessary to do the visual inspection of the serial numbers 

on three check tee fittings. 

PART B: for suspect serial numbers, 1 man-hour per check tee fitting, is necessary to 

do the depth check and re-identify or replace check tee fitting. A maximum of four 

man-hours is permitted if all three check tee fittings are visually and depth checked, 

and re-identified or replaced. 

The labor required to do this Alert 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 Alert Service Bulletin is scheduled in less than 100 flight hours 

from its release date (Basic Issue). 

G. Material - Cost and Availability 

No kit is necessary to do this special check/replacement. For material data, refer 

to Paragraph 3. 

The parts in Paragraph 3.B. are necessary to do this special check/replacement. 

For the parts necessary to do this Alert Service Bulletin, refer to Kidde Aerospace 

and Defense, Service Bulletin, 446651-26-494 and Paragraph 3.B. of this Service 

Bulletin. 

Sufficient parts will be kept for the estimated amount of defective parts. 

The check tee fitting(s) is available at no cost if a no-charge purchase order is 

sent to Bombardier Aerospace in less than 100 flight hours from this Alert Service 

Bulletin release date (Basic Issue). 
MODEL BD-700-1A11 (BD-700) 

Basic Issue: Apr 18/2013 A700-26-5002

 Page 4 of 9 

Return defective units for disposal 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 

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. 

H. Tooling 

The equipment and tools listed below are necessary to do this inspection and 

modification: 

GSE REFERENCE NO. PART NO. DESCRIPTION 

20X-10-01 S4933959-501 Tag, Circuit Breaker 

- - Wrench, Torque 

0 to 25 lbf in 

(0 to 2.82 Nm) 

- - Wrench, Torque 

0 to 50 lbf ft 

(0 to 68 Nm) 

I. Weight and Balance 

No change. 

J. Electrical Load Data 

No change. 
MODEL BD-700-1A11 (BD-700) 

Basic Issue: Apr 18/2013 A700-26-5002

 Page 5 of 9 

K. References 

– Transport Canada Civil Aviation Airworthiness Directive is pending. 

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

C-01620, Rev. - - 1. 

– Kidde Aerospace & Defense, Service Bulletin 446651-26-494 (attached). 

– Advisory Wire AW700-26-0424. 

– Global 5000 BD700-1A11 Featuring Global Vision Flight Deck, Aircraft 

Maintenance Manual (AMM), Chapters 6, 24 and 26. 

– Global 5000 BD700-1A11 Featuring Global Vision Flight Deck, Aircraft 

Illustrated Parts Catalog (AIPC), Chapter 26 

– Global 5000 BD-700-1A11 Illustrated Tool and Equipment Manual (ITEM), 

Chapter 20. 

– Bombardier Aerospace, Standard Practices Manual (SPM), Chapter 20. 

L. Other Publications Affected 

None. 

M. Equivalent Service Bulletins 

– For the Global Express and Global Express XRS BD-700-1A10 aircraft, use 

Alert SB A700-26-010. 

– For the Global 5000 BD-700-1A11 aircraft, use Alert SB A700-1A11-26-003. 

– For the Global 6000 BD-700-1A10 aircraft, use Alert SB A700-26-6002. 

2. ACCOMPLISHMENT INSTRUCTIONS 

NOTES: 1. All TASKs given in the procedures that follow are from the Global 5000 

BD-700-1A11 aircraft Featuring Global Vision Flight Deck, Aircraft 

Maintenance Manual (AMM) unless otherwise specified. 

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

Global 5000 BD-700-1A11 aircraft Featuring Global Vision Flight Deck, 

Aircraft Maintenance Manual (AMM), Chapter 6. 

A. Aircraft Setup 

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

TASK 24-00-00-901-801. 

(2) Set the circuit breakers that follow to LOCKED (refer to TASK 24-00-00-863-801): 

SYSTEM NAME CIRCUIT BREAKER NAME BUS NAME 

FIRE APU FIRE HANDLE BATT 

FIRE L ENG FIRE HANDLE BATT 

FIRE R ENG FIRE HANDLE BATT 
MODEL BD-700-1A11 (BD-700) 

Basic Issue: Apr 18/2013 A700-26-5002

 Page 6 of 9 

(3) Open and tag the circuit breakers that follow: 

LOCATION CB NO. NAME ZONE 

DCPC A1 FIREX CH A 130 

DCPC A2 FIREX CH B 130 

(4) Open the aft equipment-compartment door (311BB). 

B. PART A: Serial Number Verification 

(1) Inspect and record the serial numbers on the two engines and one APU check 

tee fittings, Part No. 446651. 

NOTE: For location of the three check tee fittings, refer to the AIPC Chapter 

26-21-45. 

(2) If the recorded serial number(s) are 062 to 070, 117 to 133, 3728 to 3731, 

3733 to 3760 and 3762 to 3776, then do Paragraph 2.C. PART B of this 

Alert Service Bulletin. 

NOTE: Before performing PART B, make sure your schedule allows a 

minimum of 24 hours downtime, should a replacement check tee 

fitting be required. 

(3) If the recorded numbers are not on the list, then you have met the intent of 

this Alert Service Bulletin. Go to Paragraph 2.E. 

C. PART B: Inspection and/or Replacement of Check Tee Fitting(s) 

CAUTION: USE TWO WRENCHES WHEN YOU REMOVE/TORQUE THE 

HOSES/TUBES. USE ONE WRENCH TO HOLD THE FITTING, 

AND THE OTHER WRENCH TO LOOSEN/TORQUE THE 

COUPLING NUT. IF YOU DO NOT DO THIS, YOU CAN CAUSE 

DAMAGE TO THE COMPONENTS. 

(1) Disconnect the coupling nut on one of the two discharge lines at the check tee 

fitting. 

(2) Carefully move the discharge line to the side of the check tee fitting. If 

necessary, loosen the screw(s) that secures the discharge line clamp(s) to the 

aircraft structure. 

(3) Carry out the accomplishment instructions in the attached Kidde Aerospace 

and Defense Service Bulletin, 446651-26-494. 

(a) If the check tee fitting failed the depth check, remove and replace the 

check tee fitting. Refer to TASKS 26-21-45-000-801 and 

26-21-45-400-801. 

(b) If the check tee fitting passed the depth check, re-identify the check tee 

fitting in accordance with Kidde Aerospace and Defense Service Bulletin, 

446651-26-494 and go to step 2.B.(4). 
MODEL BD-700-1A11 (BD-700) 

Basic Issue: Apr 18/2013 A700-26-5002

 Page 7 of 9 

(4) Apply sealant to the threads of the check tee fitting. 

CAUTION: USE TWO WRENCHES WHEN YOU REMOVE/TORQUE THE 

HOSES/TUBES. USE ONE WRENCH TO HOLD THE FITTING, 

AND THE OTHER WRENCH TO LOOSEN/TORQUE THE 

COUPLING NUT. IF YOU DO NOT DO THIS, YOU CAN CAUSE 

DAMAGE TO THE COMPONENTS. 

(5) Connect the coupling nut to the discharge line to the check tee fitting. Torque 

the coupling nut between 30 to 35.83 lbf ft (40.68 to 48.59 Nm). Refer to SPM 

TASK 20-21-00-910-801. 

(6) If loosened, torque the screw(s) that secures the fire-extinguishing discharge 

line to the aircraft structure between 10 to 13 lbf in (1.13 to 1.46 Nm). Refer 

to SPM, TASK 20-21-00-910-801. 

D. Testing 

No testing required. 

E. Close-out 

(1) Set the circuit breakers that follow to IN (refer to TASK 24-00-00-863-802): 

SYSTEM NAME CIRCUIT BREAKER NAME BUS NAME 

FIRE APU FIRE HANDLE BATT 

FIRE L ENG FIRE HANDLE BATT 

FIRE R ENG FIRE HANDLE BATT 

(2) Remove the tags and close the circuit breakers that follow: 

LOCATION CB NO. NAME ZONE 

DCPC A1 FIREX CH A 130 

DCPC A2 FIREX CH B 130 

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

(4) Close the aft equipment compartment door 311BB. 
MODEL BD-700-1A11 (BD-700) 

Basic Issue: Apr 18/2013 A700-26-5002

 Page 8 of 9 

F. Recording 

You can do each PART of this Alert Service Bulletin independently. When any 

PART of this Alert 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 this Alert Service Bulletin and are 

available from Bombardier Aerospace Parts Services, Montreal: 

NEW 

PART NO. 

QTY ITEM USED 

PART NO. 

INSTRUCTIONS - 

DISPOSITION 

446651 3 

(Note 2) 

Check Tee 446651 Refer to 

Paragraph 1.G. 

NOTES: 1. The part number for the item listed above is subject to change 

without revision to this Alert 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. A maximum of three check tee fittings may be required for each 

aircraft. 

 3. The part listed in this table is also listed the Kidde Aerospace and 

Defense Service Bulletin, 446651-26-494. 
MODEL BD-700-1A11 (BD-700) 

Basic Issue: Apr 18/2013 A700-26-5002

 Page 9 of 9 

C. Material 

The materials that follow, or equivalent, are necessary to do this Alert Service 

Bulletin. They can be purchased from a local supplier. Bombardier Aerospace 

does not pay for these consumables. 

DESCRIPTION 

PART 

No./NAME 

SPECIFICATION QUANTITY SUPPLIER

(See Note)

Coating, 

Epoxy, Clear 

- MIL-C-22750 As 

Necessary 

for PART B 

Code: A 

Compound, 

Sealing, Pipe 

and Joint 

Thread 

- TT-S-1732 As 

Necessary 

for PART B 

Code: A 

Ink, Black, 

Marking 

- A-A-208 Type IV As 

Necessary 

for PART B 

Code: A 

Stamp, Rubber - - As 

Necessary 

for PART B 

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 Alert 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: A700-26-5002 ISSUE: Basic DATED: Apr 18/2013 

 

TITLE: Special Check/Replacement – Fire Extinguishing System – Inspection of Check Tee, 

Part No. 446651 

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
ALERT SERVICE BULLETIN INCORPORATION SHEET – “A700-26-5002” BOMBARDIER SUBMISSION

Upon completion of the Alert 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 

 A700-26-5002 Basic PART A 

 “ “ PART B 

 - - - 

Actual hours to accomplish Service Bulletin: 

1. Where the Alert 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 Alert 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 

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