Basic Issue: Dec 16/2010 

# 100-29-14 Page 1 of 1 

# SERVICE BULLETIN SUMMARY

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

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

ATA 29-21

HYDRAULIC POWER

SPECIAL CHECK/MODIFICATION – AUXILIARY HYDRAULIC SYSTEM – REPLACEMENT OF ACCUMULATOR, PART NO. 900095-1
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 Refer to Paragraph 1.D.

EFFECTIVITY: A/C Serial No. 20003 to 20335

MANPOWER: 5 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

NOTES : This Service Bulletin is expected to be the subject of an Airworthiness Directive

which will make it necessary to implement this Service Bulletin. Due to a limited quantity of spare accumulators, we strongly suggest that the Service Bulletin be accomplished only at the due cycle.

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.

© 2010 Bombardier Inc. All rights reserved Challenger*, Global Express*, Global Express XRS *, Global 5000*, Learjet* are Trademarks of Bombardier Inc.

Basic Issue: Dec 16/2010 

# 100-29-14 Page 1 of 9 

# SERVICE BULLETIN

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

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

ATA 29-21

HYDRAULIC POWER

SPECIAL CHECK/MODIFICATION – AUXILIARY HYDRAULIC SYSTEM – REPLACEMENT OF ACCUMULATOR, PART NO. 900095-1



### 1. PLANNING INFORMATION

NOTES : 1. This Service Bulletin is applicable to all auxiliary hydraulic system

accumulators (herein referred to as accumulator), Part No. 900095-1 which does not have the letter “E” as part of the suffix stamped on the serial number plate. 2. This Service Bulletin is also applicable for the auxiliary hydraulic system accumulators in the operator’s stock room with Part No. 900095-1 which do not have the letter “E” as part of the suffix stamped on the serial number plate. A. Effectivity BD-100-1A10 aircraft, Serial No. 20003 to 20335

. 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: Dec 16/2010 

# 100-29-14 Page 2 of 9 B. Reason Field evidence has shown from the Regional Jet family that the screw caps of the accumulator are susceptible to cracking after 3500 flight cycles. This could possibly lead to a screw cap release, which in turn may cause damage to the aircraft structure and/or systems. This Service Bulletin gives instructions to inspect and if required, replace the accumulator in accordance with the compliance given in Paragraph 1.D. with a new or repaired unit with the same part number that has the letter “E” as part of the suffix stamped on the serial number plate. C. Description This Service Bulletin gives instructions to:

–Get access to the auxiliary hydraulic system,

–Inspect the accumulator to determine:

–If the accumulator must be replaced, or

–If the accumulator requires identification.

–If the unit must be replaced, remove the accumulator,

–Return the removed accumulator for a new or repaired unit,

–Install the new or repaired accumulator, and

–Do the necessary tests to make sure the system operates correctly. D. Compliance For accumulators that have less than 3150 flight cycles at the release date of this Service Bulletin, replace the accumulator before 3500 flight cycles. For accumulators that have more than 3150 flight cycles at the release date of this Service Bulletin, replace the accumulator within the next 350 flight cycles. For accumulators where the flight cycles are unknown and accumulators that have been replaced and history of replaced hydraulic accumulators is unknown at the release date of this Service Bulletin, replace the accumulator within the next 350 flight cycles.
NOTE : Due to a limited quantity of spare accumulators, we strongly suggest that the Service Bulletin be accomplished only at the due cycle. 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.MODEL BD-100-1A10 (CL-300)

Basic Issue: Dec 16/2010 

# 100-29-14 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 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. 1 man-hour is necessary to do the special check. 4 man-hours are necessary to do the modification. The labor required to do the special check and modification of 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) accumulator flight cycles are unknown or greater than 3150. G. Material - Cost and Availability No kit is necessary to do this modification. For material data, refer to Paragraph 3. Accumulator, Part No. 900095-1 with the suffix “E” stamped on the serial numberplate is required to do this Service Bulletin, and is available at no cost if a nocharge purchase order is sent to Bombardier Aerospace within the time compliance given in Paragraph 1.D. Return Accumulator, Part No. 900095-1 and which does not have the letter “E” as part of the suffix stamped on the serial number plate (except the serial numbers listed in Table 1 and Serial Nos. 60199-1413 to 60199-1553 of Parker, Service Bulletin, 900095-1-29-394), to the address shown below:
Learjet Core Returns 8219 West Irving, Bldg 9, Dock 9, Wichita, KS 67209 USAMODEL BD-100-1A10 (CL-300)

Basic Issue: Dec 16/2010 

# 100-29-14 Page 4 of 9 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. During or after the above free period, Smart Parts Plus does not pay for the part. H. Tooling

GSE REFERENCE NO. PART NO. DESCRIPTION

24-00-24 S4933959-501 Tag, Circuit Breaker Commercially Available - Container, Hydraulic Fluid, 1 U.S. gal (3.79 L) Commercially Available - Wrench, Torque

NOTES : 1. Refer to the BD-100 Illustrated Tool and Equipment Manual to make

sure that you use the correct equipment configuration. 2. Refer to the Liability Statement 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-100-000-29-0055, Rev. B.

–BD-100 Aircraft Maintenance Manual (AMM), Chapters 6, 12, 24, 29, and 52.

–BD-100 Standard Practices Manual (SPM), Chapter 51.

–Parker, Service Bulletin, 900095-1-29-394.

L. Other Publications Affected

–BD-100 Aircraft Illustrated Parts Catalog (AIPC), Chapter 29. M. Equivalent Service Bulletin
None.MODEL BD-100-1A10 (CL-300)

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# 100-29-14 Page 5 of 9 

### 2. ACCOMPLISHMENT INSTRUCTIONS

NOTES : 1. All TASKs referenced 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 the electrical/electronic safety precautions. Refer to TASK 24-00-00-910-801. (2) Obey all the hydraulic safety precautions. Refer to TASK 29-00-00-910-801. (3) Obey all the hydraulic technical precautions. Refer to TASK 29-00-00-910-802. (4) Open and tag the circuit breaker that follows:

LOCATION CB NO. NAME ZONE

LCBP D10 AUX HYDRAULIC DC PUMP 211 (5) Release the hydraulic pressure from the auxiliary hydraulic system. Refer to TASK 29-20-00-862-802. (6) Open the aft equipment-compartment door 182GL. Refer to TASK 52-41-00-010-801. B. Special Check (1) Examine the Accumulator, Part No. 900095-1, to make sure that the letter “E” is not part of the suffix stamped on the serial number plate, and if: (a) The suffix “E” is not part of the suffix stamped on the serial number plate, go to Paragraph 2.B.(2). (b) If the suffix “E” is part of the suffix stamped on the serial number plate, go to Paragraph 2.E.MODEL BD-100-1A10 (CL-300)

Basic Issue: Dec 16/2010 

# 100-29-14 Page 6 of 9 (2) For accumulator serial number “ 60199-1413 to 60199-1553 ”, or the serial numbers listed in Table 1 below, permanently stamp the suffix “E” on the serial number plate, and go to Paragraph 2.E. Table 1: Units Repaired and Require “E” Marking
60199-0030 60199-1084 60199-1168
60199-0034 60199-1123 60199-1258
60199-0090 60199-1140 60199-1275
60199-0097 60199-1145 60199-1282
60199-0119 60199-1158 60199-1308
60199-0230 60199-1159 60199-1310
60199-1060 60199-1166 60199-1329
60199-1061 60199-1167 60199-1381

NOTE: For the serial numbers listed above, the new screw caps were installed and end caps were replaced or verified, but is necessary to incorporate Parker Service Bulletin, 900095-1-29-394 to add the letter “E” to the serial number. (3) If the accumulator serial number is not listed in Paragraph 2.B.(2), go to Paragraph 2.C.
C. Modification (1) Remove the accumulator. Refer to TASK 29-21-13-000-801. (2) Return the accumulator to the address shown in Paragraph 1.G.
NOTES : 1. Make sure that the flight cycles of the accumulator are recorded

and that the information is returned with the unit. 2. If the flight cycles are not known, enter “flight cycles unknown”. (3) Install a new or repaired accumulator, Part No. 900095-1 with the letter “E” as part of the suffix stamped on the serial number plate. Refer to TASK 29-21-13-400-801.MODEL BD-100-1A10 (CL-300)

Basic Issue: Dec 16/2010 

# 100-29-14 Page 7 of 9 D. Testing (1) Remove the tag and close the circuit breaker that follows:

LOCATION CB NO. NAME ZONE

LCBP D10 AUX HYDRAULIC DC PUMP 211 (2) Do a servicing of the accumulator. Refer to TASK 12-12-00-614-801. (3) Pressurize the auxiliary hydraulic system. Refer to TASK 29-20-00-862-801.
NOTE : Make sure that there is no hydraulic fluid leakage around the accumulator. (4) Bleed the auxiliary hydraulic system. Refer to TASK 29-20-00-870-801. (5) Do a servicing of the auxiliary hydraulic system. Refer to TASK 12-12-00-611-801. (6) Clean all the hydraulic fluid leakage from the work area. Refer to SPM-MM TASK 51-25-00-110-801.
E. Close-out (1) Remove all tools, equipment, and unwanted materials from the work area. (2) Close the aft equipment-compartment door 182GL. Refer to TASK 52-41-00-410-801. 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).MODEL BD-100-1A10 (CL-300)

Basic Issue: Dec 16/2010 

# 100-29-14 Page 8 of 9 

### 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

900095-1 with the letter “E” as part of the suffix stamped on the serial number plate. 1 Accumulator, Auxiliary Hydraulic 900095-1 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.MODEL BD-100-1A10 (CL-300)

Basic Issue: Dec 16/2010 

# 100-29-14 Page 9 of 9 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)
Fluid, Hydraulic, Phosphate Ester Fire-Resistant HYJET IV-A BAMS 564-003 As Necessary Code: A

Nitrogen - BB-N-411, Type 1, Class 1 As

Necessary Code: B

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
Exxon Mobil 3225 Gallows Road Fairfax, VA 22037 U.S.A. Tel.: 1-800-662-4525 Fax: 1-703-846-6693
www.exxonmobile.com Code: B 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: 100-29-14 ISSUE: Basic DATED: Dec 16/2010

TITLE: Special Check/Modification – Auxiliary Hydraulic System – Replacement of Accumulator, Part No. 900095-1

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:

052NI 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 – “100-29-14”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

100-29-14 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

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