D

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SERVICE BULLETIN

Customer

Support

ATA SYSTEM: 2700 NUMBER: 8 ---27 ---100

BOMBARDIER AEROSPACE REGIONAL AIRCRAFT CONSIDER THIS

SERVICE BULLETIN TO BE PARTICULARLY SIGNIFICANT AND

URGES OPERATORS TO PROMPTLY EVALUATE THE CONTENTS

SUBJECT: Flight Controls --- Brake, Rudder Control --- Replacement of Pushrod

Assembly to Substitute T4 with a T6 --- ModSum 8Q101334

1. PLANNING INFORMATION

A. Effectivity

Aircraft Affected:

In ---Service: DHC ---8 Aircraft Models 102, 103, 106, 201, 202, 301, 311,

314 and 315 Serial Numbers 464, 508, 511 thru 513, 515 thru

588.

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:

The following is a list of spares affected by this change. Review spares and

procurement systems to determine the existence of any listed parts. See

Paragraph 2.D., Existing Parts Accountability, for disposition.
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Part Number Description Remarks

82710274 ---001 Pushrod --- Brake,

Rudder Pedal

Manufactured after April

1998

B. Reason

Problem: Some pushrods may have been incorrectly manufactured with tubes

having the wrong heat treat condition using 6061 ---T4 instead of

6061 ---T6.

C. Description

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

follow:

--- pushrods p/n 82710274 ---001 are removed and discarded

--- replacement pushrods p/n 82710274 ---951 are installed

--- removed pushrods are destroyed and discarded

--- the system is rigged

--- a functional test of the brake, rudder control system is performed

--- close ---out

D. Compliance

Bombardier Aerospace highly recommends that this modification be incorporated

at the operators earliest opportunity, unless otherwise directed by their

Airworthiness Authority.

A Transport Canada Airworthiness Directive is pending

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.

F. Manpower

It will take an estimated 8 man ---hours to complete this service bulletin. The

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

Job Set ---Up 0.00

Procedure 7.00

Test / RTS 1.00

Close ---Out 0.00

G. Material --- Price and Availability

ModKit 8MK4282 ---001 is available through the Customer Accounts Service Team

at Bombardier Aerospace Regional Aircraft division. Operators should submit a

purchase order 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

Kit Number Description Price (US$) Delivery

8MK4282 ---001 Retrofit Kit ---Brake Rod

Assembly --- Brake

Rudder

Quoted at

time of order

Will be given at

time of order

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 ---8 ---4 and ....................
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PSM 1 ---82 ---4 and

PSM 1 ---83 ---4

Modifications Manual PSM 1 ---813 ---12 ...............................

L. References

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

related data that follows:

DRAWING SHEET REV

8MK4282 1 --- ---

Mod 8Q101334 Rev. ‘B’

PCA 4522 Revision --- --- (for internal reference only)

2. MATERIAL INFORMATION

A. Parts Required Per Aircraft

(1) Modification Kit 8MK4282 ---001

(2) Detailed Kit Content:

Quantity Per Kit

---001

Part Number Description Remarks

4 MS24665 ---88 Cotter Pin

4 AN960D10L Washer

2 82710274 ---951 Pushrod ---Brake

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

82710274 ---001 Pushrod 2 B DIS 82710274 ---951 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) Either pull and clip circuit breakers required to isolate affected circuits or placard

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

CAUTIONS detailed in Maintenance Manual PSM 1 ---8 ---2 or PSM 1 ---82 ---2 or

PSM 1 ---83 ---2.

B. Procedure

(1) Gain access to the brake, rudder control pushrods below the flight compartment

floor on the pilots and co ---pilots side by removing access panels 121AL and

121BL per Maintenance Manual PSM 1 ---8 ---2 or PSM 1 ---82 ---2 or PSM 1 ---83 ---2

Chapter 6 ---40 ---10.

(2) Deleted

(3) Replace two pushrods 82710274 ---001 from the brake, rudder control assembly

on the pilot’s side as follows:

(a) Disconnect both ends of the pushrod by removing two cotter pins

MS24665 ---88, two nuts MS14144L3, two washers AN960D10L and two

bolts NAS6603D7. Keep all hardware except for washers and cotter pins

(refer to Figure 3).

(b) After removing each defective Pushrod (P/N 82710274 ---001) cut each part

into two pieces in a way that will render them UNSERVICEABLE, wire lock

the two pieces together. Tag the parts and dispose them as instructed by

your Local Airworthiness Authority.

(c) Install new pushrods 82710274 ---951 using kept hardware, new washers

AN960D10L and new cotter pins MS24665 ---88 (refer to Figure 3).

(4) Rig the rudder control system per Maintenance Manual PSM 1 ---8 ---2 or PSM

1 ---82 ---2 or PSM 1 ---83 ---2 Chapter 27 ---20 ---00.

C. Close Out

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

(2) Perform a functional test of the Brake System per Maintenance Manual PSM

1 ---8 ---2 or 1 ---82 ---2 or 1 ---83 ---2 Chapter 32 ---42 ---00.

(3) Install access panels 121AL and 121BL per Maintenance Manual PSM 1 ---8 ---2 or

PSM 1 ---82 ---2 or PSM 1 ---83 ---2 Chapter 6 ---40 ---10.
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(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.

Figure 1

VIEW DELETED
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Figure 2
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View Looking Inboard on LH Side

Figure 3

COTTER PIN

MS24665 ---88

4 REQUIRED

WASHER

AN960D10L

4 REQUIRED

(BOLT NAS6603D7)

(NUT MS14144L3

PUSHROD

82710274 ---951

2 REQUIRED
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1
Jan 2009

SERVICE BULLETIN (SB) --- RECORD OF INCORPORATION

--- Q SERIES DASH 8 AIRCRAFT

To: Partner Data Co ---Ordinator (Toronto), Bombardier Aerospace Commercial Aircraft

Phone: (1) 416 375 3534 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