# Bombardier Service Bulletin 8-32-172

Copy: No revision named ("U.S. DOT/FAA - Service Bulletin - SB-8-32-172"), 14 pages: PDF https://openairdocs.org/files/sha256/80/93/8093f0be8f01aa2746652640ab620a3c9bba1e090d32a92c9abcc31f24f2ecff; text https://openairdocs.org/service-documents/bombardier/sb-8-32-172/file/8093f0be8f01.md. Rights: © Bombardier Inc. Filed by the FAA in regulations.gov docket FAA-2012-0271; AD 2012-14-04 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: 8-32-172
- Page: https://openairdocs.org/service-documents/bombardier/sb-8-32-172

## ADs that cite it (2) (OpenAirDocs)

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

- [AD 2013-14-09](https://openairdocs.org/ad/2013-14-09.md), effective Sep 10, 2013: No revision named
- [AD 2012-14-04](https://openairdocs.org/ad/2012-14-04.md), effective Aug 27, 2012: No revision named

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/bombardier/sb-8-32-172/proposed.md).

## Text (14 pages)

Rights: © Bombardier Inc. Filed by the FAA in regulations.gov docket FAA-2012-0271; AD 2012-14-04 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N.

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SERVICE BULLETIN
Customer
Support
ATA SYSTEM: 3244 NUMBER: 8- - -32- - -172
BOMBARDIER AEROSPACE REGIONAL AIRCRAFT CONSIDER THIS
SERVICE BULLETIN TO BE PARTICULARL Y SIGNIFICANT AND
URGES OPERATORS TO PROMPTL Y EVALUATE THE CONTENTS
SUBJECT : Landing Gear - - - Parking Brake System - - - Recall of Parking Brake
Accumulator - - - Special Inspection & Rectification
1. PLANNING INFORMA TION
A. Effectivity
Aircraft Affected:
In- - -Service: All DHC- - -8 Aircraft Models 102, 103, 106, 201, 202, 301, 311,
314 and 315 with parking brake hydraulic accumulator part
numbers (p/n) 0860162002 (T actair Fluid Controls Inc).
Refer to the “EFFECTIVITY” section in enclosed vendor
service bulletin (VSB) SB0860162002- - -32- - -1 for a list of
affected serial numbers.
NOTE: The instructions in this Service Bulletin are only applicable to the systems
and parts installed at the time of delivery on the aircraft or as changed by
Bombardier Aerospace Service Bulletin(s). Before you do this bulletin,
examine all STC or equivalent action changes to make sure this bulletin
can be completed.

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Spares Affected:
Operators should check spares for existence of parking brake hydraulic
accumulators p/n 0860162002 listed in the VSB. Accumulators with suspect
serial numbers are subject to recall / rework.
B. Reason
Problem: Screw caps attached at either end of parking brake hydraulic accumulator
(p/n 0860162002) may develop cracks and/or could fracture when
pressurized. This could result in loss of the No. 2 hydraulic system and
possible damage to adjacent components and/or aircraft structure.
The issue was discovered on a non DHC- - -8 aircraft that uses similar
accumulators. There have been no reported incidents on any DHC- - -8
aircraft related to the described condition.
T actair is recalling Hydraulic Accumulators assembled between March
2005 and July 2007 that may have components supplied by York to T actair
as a part of the acquisition.
Solution: This service bulletin gives the instructions to determine the part number &
serial number of the existing parking brake hydraulic accumulator. If the
part number & serial number is in the range of affected units (see NOTE
below), the operator is instructed to remove the existing “suspect” parking
brake accumulator and install a “new conforming” accumulator.
All removed “suspect” accumulator are returned to the vendor for
exchange.
NOTE: Refer to the “EFFECTIVITY” section in the enclosed TACTAIR VSB
SB0860162002- - -32- - -2 for a list of affected units.
C. Description
The procedures in this service bulletin give the instructions to do the tasks that
follow:
- - - all aircraft electrical power is selected to OFF
- - - lock pins are installed thru each main gear and main gear door mechanism
- - - the nose gear ground lock is engaged
- - - a warning sign is installed on the external hydraulic connection
- - - the hydraulic pressure in the No.2 system is depleted
- - - an electrically grounded workstand or ladder is positioned under the right wing to

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fuselage area (under the “wing root”)
- - - t w oa c c e s sp a n e la r er e m o v e d
- - - the parking brake accumulator is located
- - - the part number and serial number of the parking brake accumulator is recorded
and checked against a table in enclosed TACTAIR VSB to determine disposition
- - - if required the parking brake accumulator is removed using existing AMM
procedures and returned to the vendor per instructions given in enclosed TACTAIR
VSB SB0860162002- - -32- - -1
- - - a new accumulator (non suspect unit) is installed to agree with existing AMM
instructions
- - - Close- - -Out
D. Compliance
Bombardier Inc. recommends accomplishment of the special inspection and
rectification conveyed by this service bulletin at the earliest opportunity unless
otherwise directed by the operator’s airworthiness authority.
E. Approval
The technical content of this service bulletin has been approved under the
authority of the Transport Canada Civil Aviation (TCCA) Design Approval
O r g a n i z a t i o n N o : D A O # 9 3 --- Q --- 0 2 .
F. M a n p o w e r
It will take an estimated 5 man- - -hours to complete this service bulletin if
replacement of the parking brake accumulator is required. The breakdown of the
man- - -hours is shown in the table that follows:
TASK M A N --- H O U R S
J o b S e t --- U p 1.00
Procedure 2.00
T e s t/R T S 1.00
Close- - -Out 1.00

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For any on- - -site labor assistance, please speak with a Fleet Services
representative for a quote. The Fleet Services group can be contacted via the
Q Series T echnical Help Desk by telephone at 416- - -375- - -4000 or
email at : thd.qseries@aero.bombardier.com
G. Material - - - Price and Availability
Refer to the MATERIAL INFORMATION section in enclosed TACTAIR VSB
SB0860162002- - -32- - -1.
H. T ooling - - - Price and Availability
None
I. Weight and Balance
None
J. Electrical Load Data
Not affected
K. Publications Affected
Dash 8 Illustrated Parts Catalogue PSM 1- - -8- - -4 and....................
P S M 1 --- 8 2 --- 4 a n d
P S M 1 --- 8 3 --- 4
L. References
The initial issue of this service bulletin was prepared to the related data that
follows:
PCA 05765 Revision 1 (for internal reference only)
T actair Fluid Controls Inc. SB0860162002- - -32- - -1.

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2. MATERIAL INFORMA TION
A. Parts Required Per Aircraft
If replacement of the parking brake accumulator is required, refer to the MATERIAL
INFORMATION section in enclosed TACTAIR VSB SB0860162002- - -32- - -1.
B. Parts Required to Modify Spares
If replacement of a spare parking brake accumulator is required, refer to the
MATERIAL INFORMATION section in enclosed TACTAIR VSB
SB0860162002- - -32- - -1.
C. Special T ools and Equipment Required
None
D. Existing Parts Accountability
The following parts may be affected by this service bulletin. Indented parts are
components of the next higher assembly. The quantity (Qty.) column lists the
quantity that may be affected per aircraft for non- - -indented parts and the quantity
p e rn e x th i g h e ra s s e m b l yf o ri n d e n t e dp a r t s .
Existing
Part Number Description Qty. IC DC
New Part
Number PNC
0860162001 and/or
0860162002
Hydraulic
Accumulators
1 C RWK 0860162002 R
IC Interchangeability Code
A Not interchangeable.
B Removed Part. No direct replacement.
C Conditionally Interchangeable. Inst allation of superseded part negates the
intent of this service bulletin.

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DC Disposition
DIS Discard Part.
MUI Multiple Usage Item: Return to stock if serviceable.
RWK If affected replace existing part in accordance with this service bulletin and
enclosed VSB SB0860162002- - -32- - -2
RWI Rework existing part per .....
SAL Salvage. Return to operator’s stores for salvage consideration.
PNC Part Number Code
N No equivalent Bombardier Inc. part number for reworked part. Indicate
on part that this service bulletin has been accomplished.
R Part number after rework.
S Superseding part number.
X Reworked part and superseding part are functionally and physically
equivalent but not identical.
3. ACCOMPLISHMENT INSTRUCTIONS
A . J o b S e t --- U p
(1) Placard and select all aircraft electrical power to OFF .
(2) Make sure that lock pins are installed thru each main gear and main gear door
mechanism.
(3) Make sure the nose gear ground lock is engaged.
(4) Install wheel chocks at the nose landing gear and the main landing gear.
(5) Depressurize hydraulic systems by a pplying aileron and rudder flight control
inputs.
(6) Deplete parking brake accumulato r hydraulic pressure by applying and
releasing the EMERG. brake handle approximately 10 times.
(7) Install a warning sign on the external hydraulic connection.
(8) Position an electrically grounded workstand or ladder as required to gain access
to the parking brake accumulator (wing to fuselage ‘wing root’ right side)
(9) Remove the access panels 264DR and 262LT (Refer to AMM 06- - -40- - -10).

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B. Procedure
WARNING: OBEY ALL THE HYDRAULIC SAFETY PRECAUTIONS WHEN YOU DO
WORK ON THE HYDRAULIC SYSTEM OR A HYDRAULIC SYSTEM
COMPONENT . IF YOU DO NOT DO THIS, YOU CAN CAUSE INJURIES
TO PERSONS AND DAMAGE TO EQUIPMENT .
WARNING: BE SURE THAT THE HYDRAULIC PRESSURE IS OFF , AND THAT
THERE IS NO PRESSURE IN THE HYDRAULIC SYSTEM. IF YOU DO
NOT DO THIS YOU CAN CAUSE INJURIES TO PERSONS AND
DAMAGE TO THE EQUIPMENT .
(1) Gain access to the parking brake accumulator (wing root right side, see Figure
1). Locate the data plate and record the part number and serial number of the
accumulator.
WARNING: HYDRAULIC FLUID MAY CAUSE SKIN IRRITATION. AVOID
PROLONGED OR REPEATED CONTACT WITH SKIN. IN CASE OF EYE
CONTACT , FLUSH EYES THOROUGHL Y WITH WATER AND SEEK
PROMPT MEDICAL ATTENTION. IN CASE OF INGESTION, SEEK
PROMPT MEDICAL ATTENTION.
(2) T o determine disposition of an existing Parking Brake Accumulator p/n
0860162002 compare the recorded part number & serial number on the
accumulator with the part numbers & serial numbers listed in section 1
PLANNING INFORMATION of enclosed TACTAIR VSB SB0860162002- - -32- - -1.
(a) If the part number & serial number appears in the enclosed TACTAIR VSB
replacement is required . Remove the “suspect” accumulator to agree with
procedures given in applicable AMM. For 100 and 300 series aircraft refer to
AMM Chapter 32- - -44- - -12. For 200 series aircraft refer to AMM TASK
32- - -44- - -12- - -000- - -809.
(b) If the part number & serial number does not appear in the TACTAIR SB
replacement is not required . No additional action is required (refer to the
Close Out section below).
(3) Install a “non suspect” parking brake hydraulic accumulator to agree with
procedures given in applicable AMM. For 100 and 300 series aircraft refer to
AMM Chapter 32- - -44- - -12. For 200 series aircraft refer to AMM TASK
32- - -44- - -12- - -400- - -802.

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WARNING: MAKE SURE THAT THE HYDRAULIC POWER IS SHUT OFF AND THAT
THE HYDRAULIC SYSTEM IS NOT PRESSURIZED. IF YOU DO NOT
DO THIS YOU CAN CAUSE INJURIES TO PERSONS AND/OR DAMAGE
TO EQUIPMENT .
(4) Make sure to do a visual check of the parking brake accumulator hydraulic and
pneumatic connections for leaks after the system is serviced then refer to the
Close Out section below.
C. Close Out
(1) Install access panels 264DR and 262LT .
(2) Remove all tools, equipment, and unwanted materials from the work area.
(3) On incorporation of this Service Bulletin, make an entry that conforms to local
regulatory requirements in the applicable logbook(s). Enter component serial
numbers if applicable. Enter numbers only after complete and functional
incorporation of all work defined in this service bulletin.
(4) If removed return “suspect” parking brake hydraulic accumulator to T actair
Customer Support for replacement (refer to the MATERIAL INFORMATION
section in enclosed TACTAIR SB0860162002- - -32- - -1 for additional details).

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Parking Brake Accumulator - - - Locator View
Figure 1
PARKING BRAKE
ACCUMULATOR

### Page 10 (OCR)

SERVICE BULLETIN 8-32-172
TACTAIR
FLUID CONTROLS INC. SERVICE BULLETIN
CUSTOMER SUPPORT - 4806 WEST TAFT ROAD, LIVERPOOL, NY 13088 USA
ATA SYSTEMS 32
Landing Gear - Recall of Parking Brake Accumulator
1. PLANNING INFORMATION
A. EFFECTIVITY
This Recall Service Bulletin is issued to support 25 In.? Hydraulic Accumulators PN 0860162002,
Bombardier Aerospace Inc., SCD 7SC0117, DHC-8 Aircraft Models 102, 103, 106, 201, 202, 301, 311,
314 and 315; and applies to the following Serial Numbers only:
TACTAIR PN / BOMBARDIER SCD  SERIAL NO.
0860162002/7SC0117  60162-028
0860162002/7SC0117  60162-065B
0860162002/7SC0117  60162-147
0860162002/7SC0117  60162-0661
0860162002/7SC0117  60162-0684
0860162002/7SC0117  60162-2001
0860162002/7SC0117  60162-2002
0860162002/7SC0117  60162-2003
0860162002/7SC0117  60162-2004
0860162002/7SC0117  60162-2005
0860162002/7SC0117  60162-2006
B. CONCURRENT REQUIREMENTS
Not applicable.
C. REASON
Tactair is recalling Hydraulic Accumulators assembled between March 2005 and July 2007 that may
have components supplied by York to Tactair as a part of the acquisition.
D. DESCRIPTION
This Service Bulletin provides instructions for Operators to obtain a new unit exchange 25 In. Hydraulic
Accumulator PN 0860162002 listed above in paragraph 1.A from Tactair Customer Support.
E. COMPLIANCE
Tactair recommends that Hydraulic Accumulators listed above in paragraph 1.A be exchanged at
earliest opportunity as follows:
Option A: Tactair desires that Hydraulic Accumulators listed above be returned to Tactair.
Option B: Compliance can be accomplished by Operator proving evidence of scrapping the units listed
above and returning the nameplate to Tactair.
F. APPROVAL
This Service Bulletin does not contain modification information that revises the approved configuration
and therefore does not require FAA or other regulatory agency approval. This Service Bulletin has been
reviewed and accepted by Bombardier Aerospace Inc.
This document is the property of Tactair Fluid Controls Inc. and represents a proprietary article and proprietary information to which
Tactair Fluid Controls Inc. retains the exclusive right of use and/or manufacture and/or sale. This document may not be reproduced
without the written permission of Tactair Fluid Controls Inc. The information contained herein could be subject to U.S. Export laws and, if
classified as a military item, is controlled by the US International Traffic in Arms Regulation (ITAR) 22 CFR Part 120-130.
US Dept of Commerce Export Classification: 9A991(d); Commercial Part
SB0860162002-32-1
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Feb 15/11
15 Mar 2011  S.B. 8-32-172
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SERVICE BULLETIN 8-32-172
TACTS: SERVICE BULLETIN
CUSTOMER SUPPORT - 4806 WEST TAFT ROAD, LIVERPOOL, NY 13088 USA
G. ESTIMATED TIME
Tactair will exchange the returned 25 In. Hydraulic Accumulator PN 0860162002 with a new 25 In.?
Hydraulic Accumulator PN 0860162002 within 10 calendar days after receipt of the Hydraulic
Accumulators listed above in paragraph 1.A. Advance exchange of the Hydraulic Accumulator can be
accomplished if the Operator desires. Operators must send in a priced Purchase Order for the new unit.
Tactair will issue a credit for the invoice amount upon receipt of the core recall or evidence of the unit
being scrapped and the removed nameplate per Option B above.
H. WEIGHT AND BALANCE
Not applicable.
I. REFERENCES AND OTHER PUBLICATIONS AFFECTED
Not applicable.
2. MATERIAL INFORMATION
A. MATERIAL - PRICE AND AVAILABILITY
Replacement of the returned Hydraulic Accumulator will be provided at "no-charge" until October 30,
2011. If the Hydraulic Accumulator is not received for exchange by October 30, 2011 or evidence of the
unit being scrapped and the removed nameplate per Option B above, the program price will apply as
follows:
OLD PART NUMBER  DESCRIPTION  NEW PART NUMBER  QTY  QTY  *CODE
(SPARES EXCHANGE)  SUP  USED
0860162002(7C0117)  Hydraulic  0860162002 (7SC0117)  1  1  1,2
Accumulator
*DISPOSITION CODES: 1 = Old and New Part Numbers are interchangeable.
2 = New Exchange Accumulator @ $1,624.00 U.S. Dollars.
B. INDUSTRY SUPPORT INFORMATION
For information about Hydraulic Accumulator exchange, contact:
• Tactair Fluid Controls Inc.
Attn: Customer Support Repair
4806 West Taft Road
Liverpool, NY 13088, USA
Phone (315) 451-3928
FAX (315) 457-5595
C. REIDENTIFIED PARTS
Not applicable.
D. WARRANTY
Tactair new Hydraulic Accumulators will receive a one-year warranty.
3. ACCOMPLISHMENT INSTRUCTIONS FOR ACCUMULATOR PN 0860162002.
Not applicable.
SB0860162002-32-1
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Feb 15/11
Copying, use or disclosure of information on this page is subject to export and proprietary restrictions on page 1
15 Mar 2011  S.B. 8-32-172
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This Page Intentionally Blank
2

### Page 13

Jan 2009
SERVICE BULLETIN (SB) - - - RECORD OF INCORPORATION
- - - Q SERIES DASH 8 AIRCRAFT
To : Partner Data Co- - -Ordinator (T oronto), Bombardier Aerospace Commercial Aircraft
Phone: (1) 416 375 3534 Facsimile: (1) 416 375 4538
E- -mai l: cmdb.requests@aero.bombardier .com
From:
Company:
Phone: Extn:
Facsimile: Date:
E- -mai l:
The data that you provide below will help us record the incorporation of this ModSum
and the aircraft effectivity in the maintenance manual.
Operator: Service Bulletin: __________________ Revision: _________
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Aircraft Serial Number: Model Number: Date Bulletin Completed:
Fax this sheet to (1) 416 375 4538 or Email PDF to:
cmdb.requests@aero.bombardier.com

### Page 14

Feb 2009
SERVICE BULLETIN (SB) - - - COMMENT SHEET - - - Q SERIES DASH 8 AIRCRAFT
To : SB Focal (T oronto), Bombardier Aerospace Commercial Aircraft
Phone: (1) 416 375 4078 Facsimile: (1) 416 375 4538
E- -mai l: syed.rizvi@aero.bombardier .com
From:
Company:
Phone: Extn:
Facsimile: Date:
E- -mai l:
Select appropriate box(es) and add comments or suggestions you would like us to know
that may enhance the quality of our service bulletins.
Service Bulletin: Revision: ModSum:
1. PLANNING INFORMATION
V Effectivity V Reason V Description V Compliance
V Approval V Manpower V Material V Weight and Balance
V Electrical Load V T ooling V References V Publications Affected
2. MATERIAL INFORMATION
V Kit Content V Special T ools/Equipment V Parts to Modify Spares
V Consumables V Disposition of Existing Parts V Other
3. ACCOMPLISHMENT INSTRUCTIONS
V J o b S e t --- U p V Procedure V Close- - -Out V Te s t
V Illustration(s) V Other
4. COMMENTS, REMARKS, SUGGESTIONS
Fax this sheet to (1) 416 375 4538 or Email PDF to:
syed.rizvi@aero.bombardier.com

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