Revision ‘B’ 24 Sep 2012

DHC-8 (DASH 8)

SERVICE BULLETIN 84-26-08

Fire Protection - Fire Detection - Replacement of Fire/Overheat Detector

P/N 10-1098 with 10-1098-01 - Engine Primary Zone - ModSum 4-113713

This page transmits Revision ‘B’ of Service Bulletin 84-26-08, pages 1 thru

10 dated: 24 Sep 2012.

This service bulletin is re-issued in its entirety with the changes that follow:

- the Description section is revised to clarify steps for item to be removed

- the Compliance section is revised to add -Transport Canada Airworthiness

Directive CF-2012-07 issued.

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

bulletin and to update engineering documents. Also to add- Transport

Canada Airworthiness Directive CF-2012-07 issued.

- the ACCOMPLISHMENT INSTRUCTIONS section is revised to clarify steps

for the Removal and Installation of the Landing Light Leading Edge.

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 issue of Service Bulletin 84-26-08 and replace with

attached.

Previous issue of Service Bulletin 84-26-08:

Initial issue - Pages 1 thru 10 dated 11 Mar 2011

Rev A - Pages 1 thru 10 dated 12 May 2011

D

S.B. 84-26-08

Page 1 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD

SERVICE BULLETIN

Customer

Support

ATA SYSTEM: 2611 NUMBER: 84-26-08

BOMBARDIER AEROSPACE REGIONAL AIRCRAFT CONSIDER THIS

SERVICE BULLETIN TO BE PARTICULARLY SIGNIFICANT AND

URGES OPERATORS TO PROMPTLY EVALUATE THE CONTENTS

SUBJECT: Fire Protection - Fire Detection - Replacement of Fire/Overheat

Detector P/N 10-1098 with 10-1098-01 - Engine Primary Zone -

ModSum 4-113713

1. PLANNING INFORMATION

A. Effectivity

Aircraft Affected:

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

4373.

Production: ModSum 4-113713 will be installed before delivery on

applicable DHC-8 Aircraft at Serial Number 4374 thru 4383.

Production: Equivalent production ModSum 4V113079 will be installed

before delivery on applicable DHC-8 Aircraft at Serial Number

4384 and subsequent.

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.
SERVICE BULLETIN 84-26-08

S.B. 84-26-08

Page 2 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD

Spares Affected:

Part Number Description

10-1098 Fire/Overheat Detector

B. Reason

Kidde Aerospace and Defense has modified the Fire/Overheat Detector (APD -

Advance Pneumatic Detector) internal design to eliminate false fire indication after

fire has been extinguished.

C. Description

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

follow:

- aircraft is put into standard configuration for maintenance

- 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

- center wing leading edge is removed

- landing lights leading edge is removed (If necessary)

- forward nacelle fairing is removed

- existing Fire/Overheat Detector P/N 10-1098 on both nacelles is replaced

- an operational test of the nacelle fire detection system is done

- close out.

D. Compliance

Bombardier Inc. recommends incorporation of ModSum 4-113713 at the earliest

opportunity unless otherwise directed by the operator’s airworthiness authority.

Transport Canada Airworthiness Directive CF-2012-07 issued.
SERVICE BULLETIN 84-26-08

S.B. 84-26-08

Page 3 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD

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

It will take an estimated 25 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/Gain Access 8.00

Procedure 6.00

Test / RTS 1.00

Close-Out 10.00

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

The part detailed in Paragraph 2.A. may be obtained from any Bombardier

Aerospace Regional Aircraft authorized parts source. The price and availability will

be quoted at the time of order.

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

H. Tooling - Price and Availability
SERVICE BULLETIN 84-26-08

S.B. 84-26-08

Page 4 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD

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 ..................................

L. References

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

related data that follows:

ModSum 4Q113713 Rev. ‘C’

ModSum 4-113713 Rev. ‘C’

ModSum 4K113713 Rev. ‘B’

PCA 42588 Revision 0 (for internal reference only)

Transport Canada Airworthiness Directive Pending

Kidde Aerospace Service Bulletin 10-1098-26-485 dated: Jan 20/11

Transport Canada Airworthiness Directive CF-2012-07 issued.

2. MATERIAL INFORMATION

A. Parts Required Per Aircraft

Quantity

Per Aircraft

Part Number Description Remarks

2 10-1098-01 Fire/Overheat Detector

B. Parts Required to Modify Spares

None

C. Special Tools and Equipment Required

None
SERVICE BULLETIN 84-26-08

S.B. 84-26-08

Page 5 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD

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

10-1098 Fire/Overheat

Detector

2 B DIS 10-1098-01 S

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.

3. ACCOMPLISHMENT INSTRUCTIONS

A. Job Set-Up/Gain Access

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

WARNINGS and CAUTIONS (refer to AMM TASK’S 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.
SERVICE BULLETIN 84-26-08

S.B. 84-26-08

Page 6 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD

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

(4) Set up work platforms or ladders as required to gain access to left and right

engine nacelles. Make sure the work platforms or ladders are electrically

grounded.

(5) Remove center wing leading edge. Refer to Maintenance Manual Task

57-13-01-000-801.

(6) Remove the landing light leading edge panels 512AL & 612 AR, If required for

the release of the leading edge fairing assembly 87144008. Refer to

Maintenance Manual Task 57-23-01-000-801.

(7) Remove leading edge fairing assembly 87144008 on the forward nacelle. Refer

to Figure 1.

B. Procedure

(1) Remove existing left and right engine primary zone advance pneumatic detector

(Fire/Overheat Detector P/N 10-1098). Refer to Maintenance Manual Task

26-11-01-000-801 and enclosed Kidde Aerospace Service Bulletin

10-1098-26-485.

(2) Install on the left and right engine primary zone advance pneumatic detector

(Fire/Overheat Detector P/N 10-1098-01). Refer to Maintenance Manual Task

26-11-01-400-801 and enclosed Kidde Aerospace Service Bulletin

10-1098-26-485.

C. Close Out

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

(2) Install leading edge fairing assembly 87144008 on the forward nacelle. Refer to

Figure 1.

(3) Install landing light leading edge (If removed) panels 512AL & 612 AR. Refer to

Maintenance Manual Task 57-23-01-400-801.

(4) Install center wing leading edge. Refer to Maintenance Manual Task

57-13-01-400-801.

(5) 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 84-26-08

S.B. 84-26-08

Page 7 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD

Leading Edge Fairing

Figure 1

LEADING EDGE FAIRING

87144008
SERVICE BULLETIN 84-26-08

S.B. 84-26-08

Page 8 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD
SERVICE BULLETIN 84-26-08

S.B. 84-26-08

Page 9 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD
SERVICE BULLETIN 84-26-08

S.B. 84-26-08

Page 10 of 10

11 Mar 2011

Revision ‘B’ 24 Sep 2012 MD

1
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