Revision ‘A’ 09 Jun 2014

DHC-8 (DASH 8)

SERVICE BULLETIN 84-28-14

Fuel System - Center Wing - Engine Fuel Feed Installation - New Retrofit

Kit To Eliminate Fouling Condition - ModSum 4-113754

This page transmits Revision ‘A’ of Service Bulletin 84-28-14, pages 1 thru

12, dated 09 Jun 2014.

This service bulletin is re-issued in its entirety for the reasons that follow:

- the Description section revised to remove an extra ‘access panel’ from

component

- the Compliance section revised to add the applicable AD number

- the Material - Price and Availability section is revised with updated format

- the Publications Affected section is revised with Weight and Balance

manual deleted

- the References section is revised to convey the latest revision of the service

bulletin and engineering documentation

- step 3.C.(2) of the ACCOMPLISHMENT INSTRUCTIONS section is revised

with TASK reference changed to ‘TASK 57-11-01-400-801’.

The Compliance in the previous issue(s) of this service bulletin is not

affected by this revision. No additional rework to the aircraft is introduced by

this revision.

Remove the initial issue of Service Bulletin 84-28-14 and replace with

attached.

Previous issue(s) of Service Bulletin 84-28-14:

Initial issue - Pages 1 thru 12 dated 17 Aug 2012

D

S.B. 84-28-14

Page 1 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

SERVICE BULLETIN

Customer

Support

ATA SYSTEM: 2812 NUMBER: 84-28-14

BOMBARDIER AEROSPACE REGIONAL AIRCRAFT CONSIDER THIS

SERVICE BULLETIN TO BE PARTICULARLY SIGNIFICANT AND

URGE OPERATORS TO PROMPTLY EVALUATE THE CONTENTS

SUBJECT: Fuel System - Center Wing - Engine Fuel Feed Installation - New

Retrofit Kit To Eliminate Fouling Condition - ModSum 4-113754

1. PLANNING INFORMATION

A. Effectivity

Aircraft Affected:

In-Service: DHC-8 Aircraft Models 401 and 402 Serial Numbers 4001,

4003, 4004, 4006, 4008 thru 4417.

NOTE: ModSum 4-113643 (Bombardier Service Bulletin 84-28-09) is a

prerequisite to this ModSum.

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.

Spares Affected:

None
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 2 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

B. Reason

Problem: A fouling condition exists in the right hand fuel tank at Yw157.825 between

tube assembly 82822144-003 and the wing structure.

Solution: Introduce a new retrofit kit which replaces existing tube assembly

82822144-003 with a new tube assembly.

C. Description

The procedures in this service bulletin give the instructions to do the tasks that

follow:

- aircraft electrical power is removed

- the nose landing gear lock is engaged

- the main landing gear lock pins are installed thru each main gear and main gear

door mechanism

- the fuel tanks are drained, aircraft electrical power is removed and the engines are

supported

- access panel 623AT is removed

- tube assembly 82822144-003 and O-rings are removed and discarded. Existing

threadless couplings are kept

- new tube assembly 82822144-005 is installed with new O-rings and kept threadless

coupling

- a pressure test of new tube assembly 82822144-005 is done

- close out.

D. Compliance

Bombardier Inc. highly recommend that ModSum 4-113754 be incorporated at the

earliest opportunity unless otherwise directed by the operator’s airworthiness

authority.

Transport Canada Airworthiness Directive CF-2013-09R1.

E. Approval

The technical content of this service bulletin has been approved under the

authority of the Transport Canada Civil Aviation (TCCA) Design Approval

Organization No: DAO #93-Q-02.
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 3 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

This service bulletin does not affect Airworthiness Limitations (AWLs) or Damage

Tolerance Inspections (DTIs).

F. Manpower

It will take an estimated 2.00 man-hours to complete this service bulletin. The

breakdown of the man-hours is shown in the table that follows:

TASK MAN-HOURS

Job Set-Up 0.50

Procedure 0.50

Test / RTS 0.50

Close-Out 0.50

For any on-site labor assistance, please contact a Fleet Services representative for

a quote. The Fleet Services group can be contacted via the Q Series Technical

Help Desk by telephone at 416-375-4000 or email at:

thd.qseries@aero.bombardier.com

G. Material - Price and Availability

The ModKit(s) required to do this service bulletin are listed in the table below:

Operators should submit a purchase order through the Customer Accounts Service

Team (CAST) at Bombardier Aerospace Regional Aircraft division specifying aircraft

serial number(s) to:

Bombardier Aerospace

Customer Accounts Services Team (Mail Stop N11-32)

123 Garratt Blvd.

Toronto

Ontario

Canada M3K-1Y5

Facsimile: (416) 375-3060

Telephone: (416) 375-3920

Facsimile:

International: (416) 375-3334

European: (416) 373-5966

Americas East: (416) 373-5964

Americas West: (416) 373-5965
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 4 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

Telephone:

International: (416) 375-3706

European: (416) 373-3704

Americas East: (416) 375-3700

Americas West: (416) 373-5888

E-mail addresses:

International: cast.international@aero.bombardier.com

European: cast.europe@aero.bombardier.com

Americas East: cast.americaseast@aero.bombardier.com

Americas West: cast.americaswest@aero.bombardier.com

Kit Number Description

8MK4498-001 Retrofit - Engine Fuel Feed Installation

H. Tooling - Price and Availability

None

I. Weight and Balance

None

J. Electrical Load Data

Not affected

K. Publications Affected

Dash 8 Illustrated Parts Catalogue PSM 1-84-4 ....................

ModSums Manual PSM 1-84-12 ..................................

Weight and Balance Manual (Imperial) PSM ................ 1-84-8

L. References

Revision ‘A’ of this service bulletin was prepared to the engineering drawings and

related data that follows:

DRAWING SHEET REV

8MK4498 1 -
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 5 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

ModSum 4-113754 Rev. ‘B’

ModSum 4Q113754 Rev. ‘B’

Bombardier Service Bulletin 84-28-09 Rev. ‘C’ (ModSum 4-113643)

Bombardier Service Bulletin 84-28-13 (ModSum 4-113745)

Bombardier Service Bulletin 84-28-13 (ModSum 4-113745)

PCA 44006 Revision 0 (for internal reference only)

Transport Canada Airworthiness Directive CF-2013-09R1 dated 28 May 2013

2. MATERIAL INFORMATION

A. Parts Required Per Aircraft

(1) Modification Kit 8MK4498-001, Retrofit - Engine Fuel Feed Installation

(2) Detailed Kit Content:

Quantity Per Kit

-001

Part Number Description Remarks

1 82822144-005 Tube Assembly

2 MS29513-214 Packing, O-Ring

1 MS29513-215 Packing, O-Ring

Listed drawings that are required to complete the kits above can be requested by

writing to the following e-mail address:

qseriesdwgrequest@aero.bombardier.com

B. Parts Required to Modify Spares

None
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 6 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

C. Special Tools 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

per next higher assembly for indented parts.

Existing

Part Number Description Qty. IC DC

New Part

Number PNC

82822144-003 Tube Assembly1 A DIS 82822144-005 N

IC Interchangeability Code

A Not interchangeable.

B Removed Part. No direct replacement.

C Conditionally Interchangeable. Installation of superseded part negates the

intent of this service bulletin.

DC Disposition

DIS Discard Part.

MUI Multiple Usage Item: Return to stock if serviceable.

RWK Rework existing part in accordance with this service bulletin.

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 or equivalent part number.

X Reworked part and superseding part are functionally and physically

equivalent but not identical.
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 7 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

3. ACCOMPLISHMENT INSTRUCTIONS

A. Job Set-Up

WARNING: MAKE SURE YOU INSTALL THE LOCKPINS ON THE MAIN LANDING

GEAR. MAKE SURE YOU ENGAGE THE NOSE GEAR LOCK. IF YOU

DO NOT DO THIS, THE LANDING GEAR CAN ACCIDENTALLY

RETRACT. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE

TO THE EQUIPMENT.

WARNING: MAKE SURE YOU INSTALL THE LOCKPINS IN THE DOOR

MECHANISMS OF THE MLG AND NLG. THE DOOR MECHANISMS

CAN ACCIDENTALLY CLOSE THE LANDING GEAR DOORS. THIS CAN

CAUSE INJURIES TO PERSONS AND DAMAGE TO THE EQUIPMENT.

WARNING: MAKE SURE YOU INSTALL THE LOCKPINS ON THE LANDING GEAR

DOORS. MAKE SURE YOU DISCONNECT THE LANDING GEAR

DOORS. IF YOU DO NOT DO THIS THE LANDING GEAR DOORS WILL

CLOSE WHEN YOU APPLY THE HYDRAULIC PRESSURE. THIS CAN

CAUSE INJURIES TO PERSONS AND DAMAGE TO THE EQUIPMENT.

(1) Make sure that lock pins are installed through each main gear and main gear

door mechanism.

(2) Make sure the nose gear ground lock is engaged.

WARNING: YOU MUST REMOVE THE FUEL FROM THE FUEL TANK IN AN OPEN

AREA. IF YOU DO NOT DO THIS, YOU CAN CAUSE INJURIES TO

PERSONS AND DAMAGE TO THE EQUIPMENT.

(3) Refer to AMM TASK 28-10-00-840-801 and prepare fuel tank for access. Make

sure no fuel or fuel vapors are present before working on aircraft or in the fuel

tanks.

(4) Refer to AMM TASK’ 24-00-00-861-802, TASK 24-00-00-910-801 and placard and

select all aircraft electrical power to OFF. Obey all relevant WARNINGS and

CAUTIONS.

(5) Set up work platforms and/or ladders to permit access to right wing fuel tank

access panel 623AT. Make sure that the work platforms or ladders are

electrically grounded.

(6) Refer to AMM TASK 28-00-00-910-801 and make sure to obey the fuel system

safety precautions.
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 8 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

(7) Refer to AMM TASK 24-00-00-910-801 and make sure to obey the

electrical/electronic safety precautions.

(8) Refer to AMM TASK 24-00-00-910-802 and obey the electrostatic discharge

safety precautions.

CAUTION: MAKE SURE THAT THE FUEL TANKS ARE DRAINED BEFORE YOU

REMOVE THE ACCESS PANELS. IF YOU DO NOT DO THIS, YOU CAN

CAUSE DAMAGE TO THE WING STRUCTURE.

CAUTION: MAKE SURE THAT YOU DO NOT MOVE THE AIRCRAFT BEFORE YOU

INSTALL THE FUEL ACCESS PANELS. THIS IS NECESSARY TO

PREVENT DAMAGE TO THE WING AND THE WING BOX STRUCTURE.

(9) Refer to the applicable instructions in AMM TASK 57-11-01-000-801 and remove

right wing fuel tank access panel 623AT.

(10) Use cotton cloths or a natural sponge to soak up the remaining fuel.

(11) Refer to the applicable instructions in AMM TASK 28-10-00-840-802 and remove

fuel fumes from tank(s).

CAUTION: KEEP A CONTINUOUS FLOW OF VENTILATING AIR THROUGH A

FUEL TANK WHEN WORK IS BEING DONE INSIDE THE TANK.

B. Procedure

(1) Refer to the applicable steps in AMM TASK 28-21-06-000-801 and remove and

discard tube assembly 82822144-003. Keep threadless couplings

B0305080A16C and discard all O-rings.

NOTE: When installing new tube assembly 82822144-005, connect shorter leg

(9.67 inches, reference Figure 1) of the tube to the fitting on the front spar

first.

(2) Refer to the applicable steps in AMM TASK 28-21-06-400-801 and install new

tube assembly 82822144-005 with two new O-rings MS29513-214 (reference

Figure 2) , one new O-ring MS29513-215 (reference Figure 3) and kept

threadless couplings B0305080A16C.

C. Close Out

(1) Refer to AMM TASK 28-21-00-780-801 and do a pressure test of new tube

assembly 82822144-005. During the pressure test, monitor the position of tube

assembly 82822144-005 and make sure a 0.125 inch (1/8 inch) gap is kept

between tube assembly and wing structure including ribs.
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 9 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

(2) Refer to AMM TASK 57-11-01-400-801 and install right wing fuel tank access

panel 623AT.

(3) Remove all tools and equipment from the work area.

(4) On incorporation of this ModSum, make an entry that conforms to local

regulatory requirements in the applicable logbook(s). Enter component serial

numbers if applicable. Enter this ModSum number only after complete and

functional incorporation of all work defined in this service bulletin.
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 10 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

View Looking Down On Right Hand Wing

Figure 1

TUBE ASSEMBLY

82822144-005

ENGINE

FEED

SYSTEM

82822143-103

THREADLESS

COUPLING

ASSEMBLY

B0305080A16C

FUEL FEED INSTALLATION

82822004

DETAIL B

DETAIL A
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 11 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

Detail A

Figure 2

PACKING, O-RING

MS29513-214

QTY: 2

TUBE ASSEMBLY

82822144-005

THREADLESS COUPLING ASSEMBLY

B0305080A16C

ENGINE FEED SYSTEM

82822143-103
SERVICE BULLETIN 84-28-14

S.B. 84-28-14

Page 12 of 12

17 Aug 2012

Revision ‘A’ 09 Jun 2014

MG

Detail B

Figure 3

O-RING PACKING

MS29513-215

TUBE ASSEMBLY

82822144-005

THREADLESS

COUPLING

ASSEMBLY

B0305080A16C

FUEL FEED

INSTALLATION

82822004

1 2
Jan 2009

SERVICE BULLETIN (SB) --- RECORD OF INCORPORATION

--- Q SERIES DASH 8 AIRCRAFT

To: CMDB Focal

Facsimile: (1) 416 375 4538

E --mail: cmdb.requests@aero.bombardier.com

From:

Company:

Phone: Extn:

Facsimile: Date:

E --mail:

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
Feb 2009

SERVICE BULLETIN (SB) --- COMMENT SHEET --- Q SERIES DASH 8 AIRCRAFT

To: SB Focal (Toronto), Bombardier Aerospace Commercial Aircraft

Phone: (1) 416 375 4078 Facsimile: (1) 416 375 4538

E --mail: syed.rizvi@aero.bombardier.com

From:

Company:

Phone: Extn:

Facsimile: Date:

E --mail:

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 Tooling V References V Publications Affected

2. MATERIAL INFORMATION

V Kit Content V Special Tools/Equipment V Parts to Modify Spares

V Consumables V Disposition of Existing Parts V Other

3. ACCOMPLISHMENT INSTRUCTIONS

V Job Set ---Up V Procedure V Close---Out V Test

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