Revision ‘B’ 19 Mar 2013

DHC-8 (DASH 8)

SERVICE BULLETIN 84-28-10

Fuel System - Center Wing - Engine Fuel Feed Installation - Retrofit Kit,

Inspect and Remove Clamps - ModSum 4-113722

This page transmits Revision ‘B’ of Service Bulletin 84-28-10, pages 1 thru 8,

dated 19 Mar 2013.

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

- the PLANNING INFORMATION section A Effectivity on page 1 is revised to

add a statement ‘This Service Bulletin is required for operators that have

incorporated ModSum IS4Q2800010’.

- the PLANNING INFORMATION section B Reason on page 2 is revised to

change the way the ModSum references were given: was IS Mod 4Q2800010

now ModSum IS4Q2800010.

- the PLANNING INFORMATION section L References on page 4 is revised

to convey the latest revision of the service bulletin and engineering

documentation.

The Compliance in the previous issue of this service bulletin is not affected

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

revision.

Remove the previous revision of Service Bulletin 84-28-10 and replace with

attached.

Previous issues of Service Bulletin 84-28-10:

Initial issue - Pages 1 thru 8 dated 06 Dec 2011

Revision A - Pages 1 thru 16 dated 17 Aug 2012

2

D

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SERVICE BULLETIN

Customer

Support

ATA SYSTEM: 2800 NUMBER: 84-28-10

BOMBARDIER AEROSPACE REGIONAL AIRCRAFT CONSIDER THIS

SERVICE BULLETIN TO BE PARTICULARLY SIGNIFICANT AND

URGES OPERATORS TO PROMPTLY EVALUATE THE CONTENTS

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

Kit, Inspect and Remove Clamps - ModSum 4-113722

1. PLANNING INFORMATION

A. Effectivity

Aircraft Affected:

In-Service: DHC-8 Aircraft Models 401 and 402 Serial Numbers 4003 thru

4151

This Service Bulletin is required for operators that have incorporated ModSum

IS4Q2800010.

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
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B. Reason

Problem: Operators are installing new fuel line within the left and right wing fuel tanks

in accordance with ModSum 4-113643 (SB 84-28-09). Supporting clamps

and mounting hardware were installed by a previous ModSum

IS4Q2800010, between Y154.825 and Y136.300 in LHS of wing. The fuel

lines introduced by ModSum 4-113643 do not require the supporting

provisions introduced by ModSum IS4Q2800010.

Solution: ModSum 4-113722 removes clamps and related hardware installed to

tube assembly 82822140 and tube assembly 82822131 in the left wing fuel

tank.

C. Description

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

follow:

- aircraft is defueled

- aircraft is put into a maintenance configuration, all aircraft power is selected to

OFF, MLG lock pins are installed, NG ground lock is engaged, hydraulic

systems pressure is depleted and work stands are set in position

- wing access panel 522CT is opened

- area between Y136.300 and Y157.825 is inspected for clamps and hardware

attaching tube assembly P/N 82822140 and tube assembly 82822131

- If the clamps and hardware are installed, remove and discard as required

- If no clamps exist, no additional action is required

- access panel is installed

- close out.

D. Compliance

Bombardier Inc. highly recommend that ModSum 4-113722 be incorporated at the

earliest opportunity unless otherwise directed by the operator’s airworthiness

authority.

Transport Canada Airworthiness Directive pending
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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.

This Service Bulletin does not affect Airworthiness Limitations (AWLs) or Damage

Tolerance Inspections (DTIs).

F. Manpower

NOTE: To reduce down time both service bulletins 84-28-10 and 84-28-09 may

be done concurrently.

It will take an estimated 7.50 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 2.00*

Procedure 0.50

Test / RTS 1.00

Close-Out 2.00

*Does not include time to drain the fuel tanks.

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 Technical

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

thd.qseries@aero.bombardier.com.

G. Material - Price and Availability

None
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This service bulletin is self-contained. No drawings will be issued for this service

bulletin.

H. Tooling - Price and Availability

None

I. Weight and Balance

None

J. Electrical Load Data

Not affected

K. Publications Affected

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

L. References

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

related data that follows:

DRAWING SHEET REV

8DK4181 1 -

ModSum 4Q113722 Rev. ‘B’

ModSum 4-113722 Rev. ‘B’

PCA 42939 Revision 6 (for internal reference only)

Transport Canada Airworthiness Directive pending
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2. MATERIAL INFORMATION

A. Parts Required Per Aircraft

None

B. Parts Required to Modify Spares

None

C. Special Tools and Equipment Required

None

D. Existing Parts Accountability

None

3. ACCOMPLISHMENT INSTRUCTIONS

A. Job Set-Up

(1) Placard and select all aircraft electrical power to OFF. Obey all relevant

WARNINGS and CAUTIONS. Refer to applicable instructions in AMM PSM

1-84-2, TASKs 24-00-00-861-802 and 24-00-00-910-801.

(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) Set up the work platforms or ladders as required to gain access to wing access

panel 522CT (refer to AMM TASKs 06-41-00-992-808). Make sure the work

platforms or ladders are electrically grounded.
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(5) Remove and retain wing access panel 522CT. Refer to applicable instructions in

AMM TASK 57-11-01-000-801.

B. Procedure

(1) Inspect fuel tank area between Y136.300 and Y157.825. If clamp

MS21919WDF-12, clamp MS21919WDF-16 screw NAS1801-3-16, washers

AN960D10L, spacer NAS43DD3-32FC and nut MS21042L3 are installed to tube

assembly 82822140 and tube assembly 82822131 remove and discard as

required. Refer to Figure 1 and Figure 2.

(2) If clamps and related hardware are not installed, no additional action is required.

(3) Install retained wing access panel 522CT. Refer to applicable instructions in

AMM PSM 1-84-2, TASK 57-11-01-400-801.

C. Close Out

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

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

regulatory requirements in the applicable logbook(s). Enter this ModSum

number only after complete and functional incorporation of all work defined in

this service bulletin.
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Engine Fuel Feed Line - Clamp Removal Procedure-Locator

Figure 1

Rework Location, Refer To Figure 2
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Engine Fuel Feed Line - Clamp Removal Procedure

Figure 2

WASHER

NAS1801-3-16

SCREW

SPACER

NAS43DD3-32FC

AN960D10L

CLAMP

MS21919WDF-12

CLAMP

MS21919WDF-16

NUT, SELFLOCKING

MS21042L3

82822140

82822131

TUBE ASSY

TUBE ASSY

3 4
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