Revision ‘B’ 12 Oct 2012

DHC-8 (DASH 8)

SERVICE BULLETIN 84-26-12

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

P/N 10-1096 or 10-1096-01 or 10-1096-02 (Post SB 84-26-10A) with

10-1096-02 - Propeller Electronic Control - ModSum 4-113732

This page transmits Revision ‘B’ of Service Bulletin 84-26-12, pages 1 thru

12 dated: 12 Oct 2012.

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

-- the Effectivity section is revised to add aircraft serial numbers 4392 thru

4399 and Production cut-in at serial number 4400.

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

bulletin and engineering documentation

The Compliance recommendation in the previous issue of this service

bulletin is not affected by this revision. No further rework to the aircraft is

introduced by this revision.

Remove the previous issue of this Service Bulletin and replace with

attached.

Previous issues of Service Bulletin 84-26-12:

Initial issue - Pages 1 thru 12 dated 12 Oct 2011

Revision ‘A’ - Pages 1 thru 12 dated 13 Dec 2011

D

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SERVICE BULLETIN

Customer

Support

ATA SYSTEM: 2621 NUMBER: 84-26-12

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 10-1096 or 10-1096-01 or 10-1096-02 (Post SB

84-26-10A) with 10-1096-02 - Propeller Electronic Control - ModSum

4-113732

1. PLANNING INFORMATION

NOTE: This service bulletin supercedes Service Bulletin 84-26-10.

A. Effectivity

Aircraft Affected:

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

4399.

Production: ModSum 4-113732 will be installed before delivery on

applicable DHC-8 Aircraft at Serial Number 4400 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.
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Spares Affected:

Part Number Description

10-1096 or 10-1096-01 or

10-1096-02 (post SB 84-26-10A,

with s/n that has all numeric characters)

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

- existing Fire/Overheat Detector P/N 10-1096 or 10-1096-01 or 10-1096-02 (post

SB 84-26-10A, with s/n that has all numeric characters) on both Propeller

Electronic Control is replaced with P/N 1096-02 that has serial number of three

alpha characters followed by four numeric characters

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

- close out.

D. Compliance

Bombardier Inc. recommends incorporation of ModSum 4-113732 at the earliest

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

Transport Canada Airworthiness Directive Pending.

E. Approval

The technical content of this service bulletin has been approved under the
SERVICE BULLETIN 84-26-12

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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 3.5 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 2.00

Test / RTS 0.50

Close-Out 0.50

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

None

I. Weight and Balance

None
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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 4-113732 Rev. ‘B’

ModSum 4K113732 Rev. ‘B’

PCA 42588 Revision 0 (for internal reference only)

Transport Canada Airworthiness Directive Pending

Kidde Aerospace Service Bulletin 10-1096-26-487 Rev 2 Dec 1/11

2. MATERIAL INFORMATION

A. Parts Required Per Aircraft

Quantity

Per Aircraft

Part Number Description Remarks

2 10-1096-02 Fire/Overheat Detector

B. Parts Required to Modify Spares

None

C. Special Tools and Equipment Required

None
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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

10-1096

or

10-1096-01

or

10-1096-02

(post SB 84-26-10A,

with s/n that has all

numeric characters)

Fire/Overheat

Detector

2 B SAL 10-1096-02 with

s/n of three alpha

and four numeric

characters

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.
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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 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.

(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

engines. Make sure the work platforms or ladders are electrically grounded.

B. Procedure

(1) Remove existing left and right propeller electronic control advance pneumatic

detector (Fire/Overheat Detector P/N 10-1096 or 10-1096-01 or 10-1096-02 with

s/n that has all numeric characters). Refer to Figure 1, Maintenance Manual Task

26-11-03-000-801 and enclosed Kidde Aerospace Service Bulletin

10-1096-26-487.

(2) Install on the left and right propeller electronic control advance pneumatic

detector (Fire/Overheat Detector P/N 10-1096-02 that has serial number of three

alpha characters followed by four numeric characters). Refer to Maintenance

Manual Task 26-11-03-400-801 and enclosed Kidde Aerospace Service Bulletin

10-1096-26-487.

NOTE: Refer to enclosed Figures 1 & 2 for serial number reference.

(3) Do the operational test of the Nacelle Fire Detection System. Refer to

Maintenance Manual Task 26-11-00-710-801.

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 component serial

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

functional incorporation of all work defined in this service bulletin.
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Figure 1

Serial Number Identification of Existing Detector (for reference only)
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Figure 2

Serial Number Identification of New Detector (for reference only)
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This Page Intentionally Blank

5
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