@A340

SERVICE BULLETIN

SUMMARY

AIRBUS

CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC CEDEX

FRANCE

Tel : (33) 5 61 93 33 33

Telex : AIRBU 530526F

Fax : (33) 5 61 93 42 51

This summary is for information only and is not approved for modification of the aircraft.

ATA SYSTEM: 27

TITLE: FLIGHT CONTROLS - ELECTRICAL BACK-UP - INSTALL NEW BACKUP CONTROL MODULE (BCM) ON ENHANCED A340.

**CONF ALL

MODIFICATIONS

MODIFICATION CLASSIFICATION

MAJOR 58118S30423

MINOR None

NOTE: As per EASA IR 21, a minor change is one that has no appreciable effect on the

mass, balance, structural strength, reliability, operational characteristics affecting the

airworthiness of the product. All other changes are major changes.

REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES

During BCM (Back-up Control Module) retrofit as per Airbus SB Ref. A340-27-4142 and SAGEM

Service Bulletin 418-27-010 introducing BCM PN 418-00877-102 (replacement of corroded resistances

at SAGEM facilities), some attachment screws of the internal gyrometer have been found loosened

within the equipment.

A loose attachment of the gyrometer may induce erroneous yaw data leading to a degradation of

the piloting laws when the aircraft is in back up control configuration. Investigations performed at

manufacturer’s facility pointed out that screws loosening on BCM Part Number (P/N) 418-00877-100,

418-00877-101 and 418-00877-102 are due to temperature variations combined with vibrations. This

scenario is only considered for aircraft with electrical rudder (post-mod 49144).

This Service Bulletin is published to advise all operators of A340 enhanced aircraft fitted with electrical

rudder (post-mod 49144) of the issue of SAGEM Service Bulletin No. 418-27-011. The design solution

uses a positive locking device for the fixation of the gyrometer and additional locking washers for the

attachment of the electronic card. These improvements under supplier responsibility (SAGEM) lead to

introduce a new BCM PN 418-00877-103 amendment A.

Accomplishment of this Service Bulletin will contribute to ensure the reliability of the yaw data provided

by the BCM.

This Service Bulletin will cancel AD 2009-0153 if associated with the modification of Pedal Feel and

Trim Unit (Ref OIT SE 999.0058/09/LB). Only in case of this association, aircraft dispatch with FCPC3

(PRIM 3) inoperative (MMEL 27-93-01-C) for A340-300 aircraft fitted with MOD 49144 will be restored.

DATE: Nov 06/09 SERVICE BULLETIN No.: A340-27-4160

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SERVICE BULLETIN

SUMMARY

GENERAL EVALUATION

EVALUATION TABLE

COMPLIANCE RECOMMENDED CANCELS INSPECTION SB NO

POTENTIAL AD NO A/C OPERATION AFFECTED NO

RELIABILITY AFFECTED NO PAX COMFORT AFFECTED NO

COST SAVING NO LROPS AFFECTED NO

STRUCTURAL LIFE EXTN NO VENDOR SB INVOLVED YES

MATERIAL PRICE INFORMATION

MATERIAL PRICE INFORMATION TABLE

MATERIAL SET QTY PER

A/C

PRICE PER

A/C (USD)

MAIN PARTS

Equipment BFEA01 1 See SB Back-up control module

EFFECTIVITY

This Service Bulletin is applicable to this (these) operator(s) :

FIN MAU SAA SVW SWR THT

CONCURRENT REQUIREMENTS

Accomplishment of this Service Bulletin requires the prior or simultaneous accomplishment of the

following Service Bulletin(s) or the equivalent production modification(s):

Service Bulletin No. A340-27-4142 Mod. No. 55185S18591

REFERENCES / REPERCUSSIONS

TFU 27.99.00.003

OEB None

AOT None

SIL None

LINE MAINTENANCE AFFECTED No

LIFE LIMIT None

OTHER None

NATURE OF THE WORK

AIRCRAFT NO

EQUIPMENT YES

HARD YES

SOFT NO

OBRM NO

MANPOWER

Task 274160-831-801-001: Modification

TOTAL MANHOURS 3.50

ELAPSED TIME (HOURS) 3.50

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SERVICE BULLETIN

SUMMARY

Task 274160-831-801-001: Modification

Additional manhours related to Vendor SB; refer to:

Modify the Back-up Control Module 42CS SAGEM SA Service Bulletin No.

418-27-011

APPENDICES

None

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SERVICE BULLETIN

SUMMARY

**CONF ALL

F_SB_274160_5_SUAA_01_00

FR80

FR79

FR75

A

Z170

A

B

42CS

B

Figure A-FSUAA - Sheet 01

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@A340

SERVICE BULLETIN

AIRBUS

CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC CEDEX

FRANCE

Tel : (33) 5 61 93 33 33

Telex : AIRBU 530526F

Fax : (33) 5 61 93 42 51

ATA SYSTEM: 27

TITLE: FLIGHT CONTROLS - ELECTRICAL BACK-UP - INSTALL NEW BACKUP CONTROL MODULE (BCM) ON ENHANCED A340.

MODIFICATION No.: 58118S30423

This document contains AIRBUS PROPRIETARY INFORMATION and shall at all times remain the

property of AIRBUS; no intellectual property right or licence is granted by AIRBUS in connection with

any information contained in it. It is delivered on the express condition that said document and the

information contained in it shall be treated as confidential, shall not be used for any purpose other than

that for which it is hereby delivered. It shall not be disclosed in whole or in part to third parties and shall

not be duplicated in any manner (except for the purposes of performing the tasks described hereunder

and provided that any recipient of such document shall comply with the conditions herein), without

AIRBUS prior written consent.

1. PLANNING INFORMATION

**CONF ALL

A. EFFECTIVITY

NOTE: This Service Bulletin is only applicable to aircraft on which modification

No. 49144S16279 (INSTALL RUDDER FLY-BY WIRE ON A330/A340) is

embodied.

(1) Models

340-313

(2) Effectivity by MSN

0544 0582 0585 0590 0598 0643 0646 0651 0668 0793 0800 0835 0844 0921 0938

0955

(3) Effectivity by Operator

The Operator/MSN relationship is provided for information only and is correct at the time

of issue in accordance with the information available to AIRBUS. Any future changes

resulting from transfer of an aircraft from one operator to another will not be reflected in

this list unless the Service Bulletin is revised for another reason.

OPERATOR MSN

FIN 0835 0844 0921 0938

MAU 0793 0800

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SERVICE BULLETIN

OPERATOR MSN

SAA 0544 0582 0590 0643 0646 0651

SVW 0955

SWR 0585 0598

THT 0668

(4) Configuration by MSN

MSN CONFIGURATION

0544 0582 0585 0590 0598 0643 0646 0651 0668 0793 0800

0835 0844 0921 0938 0955

001

(5) Configuration definition

**CONF 001

Config. 001 is valid for all the aircraft given in the effectivity of this Service Bulletin as a

standard configuration.

(6) Material Effectivity

MATERIAL QTY PER A/C SEE NOTES

Equipment BFEA01 1

B. CONCURRENT REQUIREMENTS

Accomplishment of this Service Bulletin requires the prior or simultaneous accomplishment of

the following Service Bulletin(s) or the equivalent production modification(s):

Service Bulletin No. A340-27-4142 Mod. No. 55185S18591

C. REASON

(1) History

During BCM (Back-up Control Module) retrofit as per Airbus SB Ref. A340-27-4142 and

SAGEM Service Bulletin 418-27-010 introducing BCM PN 418-00877-102 (replacement

of corroded resistances at SAGEM facilities), some attachment screws of the internal

gyrometer have been found loosened within the equipment.

A loose attachment of the gyrometer may induce erroneous yaw data leading to a

degradation of the piloting laws when the aircraft is in back up control configuration.

Investigations performed at manufacturer’s facility pointed out that screws loosening on

BCM Part Number (P/N) 418-00877-100, 418-00877-101 and 418-00877-102 are due to

temperature variations combined with vibrations. This scenario is only considered for

aircraft with electrical rudder (post-mod 49144).

DATE: Nov 06/09 SERVICE BULLETIN No.: A340-27-4160

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SERVICE BULLETIN

(2) Objective/Action

This Service Bulletin is published to advise all operators of A340 enhanced aircraft fitted

with electrical rudder (post-mod 49144) of the issue of SAGEM Service Bulletin No.

418-27-011. The design solution uses a positive locking device for the fixation of the

gyrometer and additional locking washers for the attachment of the electronic card.

These improvements under supplier responsibility (SAGEM) lead to introduce a new

BCM PN 418-00877-103 amendment A.

(3) Advantages

Accomplishment of this Service Bulletin will contribute to ensure the reliability of the yaw

data provided by the BCM.

(4) Operational/Maintenance Consequences

This Service Bulletin will cancel AD 2009-0153 if associated with the modification of

Pedal Feel and Trim Unit (Ref OIT SE 999.0058/09/LB). Only in case of this association,

aircraft dispatch with FCPC3 (PRIM 3) inoperative (MMEL 27-93-01-C) for A340-300

aircraft fitted with MOD 49144 will be restored.

D. DESCRIPTION

To accomplish this Service Bulletin it is necessary to :

Task 274160-831-801-001: Modification

(1) Remove the Back-up Control Module 42CS

(2) Modify the Back-up Control Module 42CS

(3) Install the Back-up Control Module 42CS

E. COMPLIANCE

(1) Classification

RECOMMENDED

(2) Accomplishment Timescale

Accomplishment of this Service Bulletin is recommended at the earliest opportunity

where manpower and facilities are available.

F. APPROVAL

Approved under EASA Design Organisation Approval No. EASA 21J.031.

If an aircraft listed in the effectivity has a modification or repair embodied that is not of

AIRBUS origin, and which affects the content of this Service Bulletin, the operator is

responsible for obtaining approval by its airworthiness authority for any adaptation necessary

before incorporation of the Service Bulletin.

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SERVICE BULLETIN

G. MANPOWER

The manpower estimates given in this Service Bulletin are based on the direct labor cost to

do the work. These estimates assume that the work will be done by experienced personnel,

and may need to be revised upwards to suit operator’s circumstances. The estimates do not

include the time to prepare, plan or inspect the work. Manufacture and procurement of parts

and tools, drying times for paints, sealants, etc., and general administration work are also not

included.

Task 274160-831-801-001: Modification

Get Access 0.50

On Aircraft

Remove the Back-up Control Module 42CS 1.00

Install the Back-up Control Module 42CS 1.00

Tests 0.50

Close-Up 0.50

TOTAL MANHOURS 3.50

ELAPSED TIME (HOURS) 3.50

Additional manhours related to Vendor SB; refer to:

Modify the Back-up Control Module 42CS SAGEM SA Service Bulletin No.

418-27-011

H. WEIGHT AND BALANCE

Not Changed

I. ELECTRICAL LOAD DATA

Not Changed

J. REFERENCES

Aircraft Maintenance Manual (AMM) 12-34-24 27-99-34

ATA Common Support Data Dictionary (CSDD),

Chapter 2

Elec. Std. Practices Manual (ESPM) 20-55-00

Service Bulletin (SB) A340-27-4142

Vendor Service Bulletin (VSB) SAGEM SA Service Bulletin No.

418-27-011

K. PUBLICATION AFFECTED

Aircraft Wiring List (AWL)

Illustrated Parts Catalog (IPC) 27-98-04 27-99-34

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SERVICE BULLETIN

L. INTERCHANGEABILITY/MIXABILITY

DESCRIPTION OLD PART N ̊ NEW PART N ̊ INT MIXABILITY SEE

NOTES

BCM-Backup Control

Module

418-00877-102 418-00877-103 01 Not

Applicable

NOTE: For definitions of interchangeability codes in column INT., refer to ATA

Common Support Data Dictionary (CSDD), Chapter 2.

M. SPARES

None

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SERVICE BULLETIN

This Page Intentionally Left Blank

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SERVICE BULLETIN

2. MATERIAL INFORMATION

**CONF ALL

A. MATERIAL - PRICE AND AVAILABILITY

(1) Procurement Addresses

Equipment BFEA01 This Service Bulletin is the subject of an

AIRBUS monitored retrofit campaign.Vendor

parts are to be procured from :

SAGEM SA Defense and Security Division

Massy Palaiseau Plant

TECHNICAL PUBLICATIONS

11, rue Ampere

91344 MASSY Cedex

FRANCE

Telefax : +33(0) 1 69 19 67 00

Telex : 602164F

SITA : PARIMCR

(2) Price and Availability

Refer to the SAGEM SA Service Bulletin No. 418-27-011 for the equipment modification

sales terms.

B. INDUSTRY SUPPORT INFORMATION

For the organisation of this retrofit, operators are kindly requested to contact AIRBUS retrofit

management department :

AIRBUS CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC CEDEX

France

Tel : (33) 5 67 19 06 22

E-mail : monitored.retrofit@airbus.com

Fax : (33) 5 61 93 27 45

Modification of parts/equipment is at no charge for the operator. The man-hours indicated in

this Service Bulletin will remain at the operators’ cost.

C. LIST OF COMPONENTS

No Kit

D. LIST OF MATERIALS - OPERATOR SUPPLIED

(1) Consumable Materials

None

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SERVICE BULLETIN

(2) Components

None

(3) Equipment

Equipment BFEA01

ITEM NEW PART N ̊ QTY (UM) KEYWORD ITEM OLD PART N ̊ INT SEE

NOTES

418-00877-103 1 BCM 418-00877-102 01

NOTE: For definitions of interchangeability codes in column INT., refer to ATA

Common Support Data Dictionary (CSDD), Chapter 2.

E. PARTS TO BE RE-IDENTIFIED BY OPERATOR

None

F. TOOLING

None

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SERVICE BULLETIN

3. ACCOMPLISHMENT INSTRUCTIONS

Task 274160-831-801-001 - Modification

WARNING: MAKE SURE THAT YOU OBEY ALL THE WARNINGS AND ALL THE CAUTIONS

INCLUDED IN THE REFERENCED PROCEDURES.

CAUTION: ALWAYS OBEY THE PRECAUTIONS THAT FOLLOW TO KEEP

ELECTRICAL WIRING IN A SATISFACTORY CONDITION (ELECTRICALLY

AND MECHANICALLY SERVICEABLE). WHEN YOU DO MAINTENANCE

WORK, REPAIRS OR MODIFICATIONS, ALWAYS KEEP ELECTRICAL WIRING,

COMPONENTS AND THE WORK AREA AS CLEAN AS POSSIBLE. TO DO

THIS:

PUT PROTECTION, SUCH AS PLASTIC SHEETING, CLOTHS, ETC; AS

NECESSARY ON WIRING AND COMPONENTS.

REGULARLY REMOVE ALL SHAVINGS, UNWANTED MATERIAL AND OTHER

CONTAMINATION.

THESE PRECAUTIONS WILL DECREASE THE RISK OF CONTAMINATION

AND DAMAGE TO THE ELECTRICAL WIRING INSTALLATION.

IN CASE OF CONTAMINATION REFER TO ESPM 20-55-00.

Task Associated Data

Zone

170

Modified FIN

42CS

Manpower

TOTAL MANHOURS 3.50

ELAPSED TIME (HOURS) 3.50

Additional manhours related to Vendor SB; refer

to:

SAGEM SA Service Bulletin No.

418-27-011

A. GENERAL

(1) Subtask 274160-839-001-001 - Administrative

Manpower Resources

Skills NON SPECIFIC

Write in the applicable aircraft records that you have done all the work given in this

Service Bulletin.

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SERVICE BULLETIN

B. PREPARATION

(1) Subtask 274160-941-001-001 - Job Set-up

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) Task 12-34-24-860-802

Task 27-99-34-000-801

(a) Make sure that the aircraft is electrically grounded (Refer to AMM Task

12-34-24-860-802)

(b) Do the preparation procedure as specified in the removal of the back-up control

module (BCM) (42CS), (Refer to AMM Task 27-99-34-000-801).

C. PROCEDURE

(1) Subtask 274160-900-001-001 - Remove the Back-up Control Module 42CS

Work Zones and Access Panels

Zone Access/Work location

170

Manpower Resources

Manhours 1.00

Minimum number of person 1

Subtask elapsed time 1.00

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) Task 27-99-34-000-801

(a) Remove the BCM 42CS (Refer to AMM Task 27-99-34-000-801) :

FIN 42CS

1 BCM-Backup Control

Module

418-00877-102

(2) Subtask 274160-831-001-001 - Modify the Back-up Control Module 42CS

References

Vendor Service Bulletin (VSB) SAGEM SA 418-27-011

(a) Modify the BCM 42CS (Refer to SAGEM SA Service Bulletin No. 418-27-011).

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SERVICE BULLETIN

(3) Subtask 274160-900-002-001 - Install the Back-up Control Module 42CS

Work Zones and Access Panels

Zone Access/Work location

170

Manpower Resources

Manhours 1.00

Minimum number of person 1

Subtask elapsed time 1.00

Skills NON SPECIFIC

Material necessary to do the job

Equipment BFEA01

ITEM NEW PART N ̊ QTY (UM) KEYWORD SEE

NOTES

418-00877-103 1 BCM

References

Aircraft Maintenance Manual (AMM) Task 27-99-34-000-801

(a) Install the BCM 42CS (Refer to AMM Task 27-99-34-000-801) :

FIN 42CS

1 BCM-Backup Control

Module

418-00877-103

D. TEST

(1) Subtask 274160-700-001-001 - Testing

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) Task 27-99-34-400-801

(a) Job set-up :

1 Remove the safety clips and tags and close the circuit breakers as

specified after the installation of the BCM (42CS), (Refer to AMM Task

27-99-34-400-801).

(b) Procedure

1 Do the test procedure as specified after the installation of the BCM (42CS),

(Refer to AMM Task 27-99-34-400-801).

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SERVICE BULLETIN

E. CLOSE-UP

(1) Subtask 274160-942-001-001 - Close-up

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) Task 27-99-34-400-801

(a) Make sure that the work areas are clean and clear of tools and other items of

equipment.

(b) Do the close-up procedure as specified in the installation of the BCM (42CS),

(Refer to AMM Task 27-99-34-400-801).

(c) Restore the systems and aircraft to normal operating condition.

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SERVICE BULLETIN

REPORTING SHEET

TITLE: FLIGHT CONTROLS - ELECTRICAL BACK-UP - INSTALL NEW BACKUP CONTROL MODULE (BCM) ON ENHANCED A340.

MODIFICATION No.: 58118S30423

Please complete the appropriate item (A or B):

A - SB WILL BE embodied YES/NO (if NO please comment)

If YES, aircraft concerned (as per SB effectivity by default) and planned dates (month/year) of

embodiment:

B - SB HAS BEEN embodied on aircraft:

Operator comments:

From Airline:

Name/Title:

Signature: Date:

If operational documentation is affected (see Paragraph 1.K of this SB): If information is needed prior to

next normal revision or prior to SB embodiment, please indicate required service(s):

Either: Modification Operational Impact (MOI), if available YES/NO

Or : Intermediate revision YES/NO

Important Information: This SB will only be incorporated in your maintenance and operational

documentation if this sheet is returned to Airbus and signed by a duly authorised representative. With

the next feasible revision, this will result in

- Updating of maintenance documentation to show pre and post SB data.

- Updating of maintenance and operational documentation to show post SB data after embodiment.

If this SB requires previous or simultaneous accomplishment of other SBs, Airbus shall automatically

include them in the manual revisions. Refer to SIL 00-037 for detailed information.

Please return this completed sheet to:

AIRBUS

CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC CEDEX FRANCE

Attn: SDC32 Technical Data and Documentation Services

FAX: (+33) 5 61 93 28 06

e-mail: sb.reporting@airbus.com

or via your Resident Customer Support Office.

Alternatively, SB lists via letters or fax are also accepted.

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SERVICE BULLETIN

QUALITY PERCEPTION FORM

Use this form to tell us what is your perception of the quality of this Service Bulletin. The reported data

that you provide us will be used to analyse areas of difficulties and to take corrective action to further

improve the quality of our Service Bulletins.

We thank you for the time you have taken in completing this form.

(Please rate on a scale of 1 to 4, with 4 being the highest score)

- Quality rating of this SB 4 3 2 1

- Quality rating of the Accomplishment Instructions 4 3 2 1

- Quality rating of the Illustrations 4 3 2 1

- Is this SB easy to understand ? Y / N

If you have had difficulties in the accomplishment of this SB please quote below the area(s) and give a

short description of the issue.

Planning Material Instructions

X Effectivity X Kit content X Preparation

X Reason X List of Materials Operator Supplied X Mod/Inspection

X Manpower X Industry support X Test

X References X Re-identification X Close-Up

X Publication X Tooling X Illustrations

Comments:

Operator: Date:

Name/Title:

Please return this form to:

AIRBUS

CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC CEDEX FRANCE

Attn : SEM4 Service Bulletins Management

FAX : (33) 5 61 93 42 51

Or via your Resident Customer Support Office.

DATE: Nov 06/09 SERVICE BULLETIN No.: A340-27-4160

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