# @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. 

# MANDATORY MANDATORY MANDATORY
ATA SYSTEM: 27 

### TITLE: FLIGHT CONTROLS - RUDDER TRIM ACTUATION AND ARTIFICIAL FEEL-INSTALL IMPROVED PFTU ON LR A/C **CONF ALL MODIFICATIONS MODIFICATION CLASSIFICATION MAJOR 200667S31517 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 Further to some reported cases of abnormal rudder deflections during application of the following tests : - AMM Task 27-99-00-740-801 Operational test of the Back-up Control Module (BCM) and Back-up Power Supply (BPS) by Built-In Test Equipment (BITE). or - AMM Task 27-99-00-710-801 Operational test of the rudder electrical back-up, it was detected that an erroneous pedals’ order could be sent by the Pedal Feel and Trim Unit (PFTU) to the BCM. The root cause was a broken screw inside the PFTU, involving that the link between the Rotary Variable differential transducer (RVDT) providing pedals’ position to the BCM and the input shaft was lost and RVDT could turn on its axis. Investigations performed at manufacturer’s facility pointed out that screws rupture on PFTU Part Number (PN) 6259-2 is due to weakening of the screws following bad degasification after surface treatment during manufacturing process. This scenario is only considered for aircraft with electrical rudder (post-Mod. No. 49144S16279 (INSTALL RUDDER FLY-BY WIRE ON A330/A340)).

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 1 5

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# @A340 SERVICE BULLETIN SUMMARY This Service Bulletin is published to advise operators of A340 aircraft of the issue of SAGEM Service Bulletin No. 6259-27-006. The design solution consists in a new grade of screws more robust and addition of self-locking inserts for the fixation of the RVDT on the input shaft. These improvements under supplier responsibility (SAGEM) lead to introduce a new PFTU PN 6259-0311. This Service Bulletin requires modifying the affected PFTU : - PN 6259-2 modified into PN 6259-0311. Accomplishment of this Service Bulletin will improve the reliability of the PFTU. Aircraft dispach with FCPC 3 (PRIM 3) inoperative (MMEL 27-93-01-C) for A340-300 aircraft fitted with Mod. No. 49144S16279 will be restored only in case both modifications of PFTU post Mod. No. 200667S31517 and BCM post Mod. No. 58118S30423 are fitted on aircraft. GENERAL EVALUATION EVALUATION TABLE COMPLIANCE MANDATORY CANCELS INSPECTION SB NO POTENTIAL AD YES A/C OPERATION AFFECTED YES RELIABILITY AFFECTED YES 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 PFTU EFFECTIVITY This Service Bulletin is applicable to this (these) operator(s) :

FIN MAU SAA SVW SWR THT CONCURRENT REQUIREMENTS None REFERENCES / REPERCUSSIONS TFU 27.22.52.001 OEB None AOT None SIL None LINE MAINTENANCE AFFECTED No LIFE LIMIT None OTHER OIT : SE 999.0058/09 DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 2 5

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# @A340 SERVICE BULLETIN SUMMARY NATURE OF THE WORK AIRCRAFT NO EQUIPMENT YES HARD YES SOFT NO OBRM NO MANPOWER Task 274167-831-801-001: Modification TOTAL MANHOURS 6.50 ELAPSED TIME (HOURS) 6.50 Additional manhours related to Vendor SB; refer to: Modify the PFTU (46CS). SAGEM Service Bulletin No. 6259-27-006 APPENDICES None

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 3 5

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# @A340 SERVICE BULLETIN SUMMARY

**CONF ALL

FR4 

### A



## A 46CS

F_SB_274167_5_SAAA_01_01 Figure A-FSAAA - Sheet 01

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 4 5

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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



# MANDATORY MANDATORY MANDATORY
ATA SYSTEM: 27 

### TITLE: FLIGHT CONTROLS - RUDDER TRIM ACTUATION AND ARTIFICIAL FEEL-INSTALL IMPROVED PFTU ON LR A/C MODIFICATION No.: 200667S31517 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 Mod 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.

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 1 5

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# @A340 SERVICE BULLETIN

OPERATOR MSN FIN 0835 0844 0921 0938 MAU 0793 0800 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. 01 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 None C. REASON (1) History Further to some reported cases of abnormal rudder deflections during application of the following tests : - AMM Task 27-99-00-740-801 Operational test of the Back-up Control Module (BCM) and Back-up Power Supply (BPS) by Built-In Test Equipment (BITE). or - AMM Task 27-99-00-710-801 Operational test of the rudder electrical back-up, it was detected that an erroneous pedals’ order could be sent by the Pedal Feel and Trim Unit (PFTU) to the BCM. The root cause was a broken screw inside the PFTU, involving that the link between the Rotary Variable differential transducer (RVDT) providing pedals’ position to the BCM and the input shaft was lost and RVDT could turn on its axis.

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 2 5

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# @A340 SERVICE BULLETIN Investigations performed at manufacturer’s facility pointed out that screws rupture on PFTU Part Number (PN) 6259-2 is due to weakening of the screws following bad degasification after surface treatment during manufacturing process. This scenario is only considered for aircraft with electrical rudder (post-Mod. No. 49144S16279 (INSTALL RUDDER FLY-BY WIRE ON A330/A340)). (2) Objective/Action This Service Bulletin is published to advise operators of A340 aircraft of the issue of SAGEM Service Bulletin No. 6259-27-006.The design solution consists in a new grade of screws more robust and addition of selflocking inserts for the fixation of the RVDT on the input shaft. These improvements under supplier responsibility (SAGEM) lead to introduce a new PFTU PN 6259-0311. This Service Bulletin requires modifying the affected PFTU : - PN 6259-2 modified into PN 6259-0311. (3) Advantages Accomplishment of this Service Bulletin will improve the reliability of the PFTU. (4) Operational/Maintenance Consequences Aircraft dispach with FCPC 3 (PRIM 3) inoperative (MMEL 27-93-01-C) for A340-300 aircraft fitted with Mod. No. 49144S16279 will be restored only in case both modifications of PFTU post Mod. No. 200667S31517 and BCM post Mod. No. 58118S30423 are fitted on aircraft. D. DESCRIPTION To accomplish this Service Bulletin it is necessary to : Task 274167-831-801-001: Modification (1) Remove the PFTU (46CS) from the Avionics Compartment. (2) Modify the PFTU (46CS). (3) Install the PFTU (46CS) in the Avionics Compartment. E. COMPLIANCE (1) Classification MANDATORY (2) Accomplishment Timescale Accomplishment of this Service Bulletin is expected to be rendered mandatory by the issue of an Airworthiness Directive (AD) published by the European Aviation Safety Agency (EASA). The accomplishment timescale, which has not yet been defined, will be given in the AD. DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 3 5

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# @A340 SERVICE BULLETIN

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. 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 274167-831-801-001: Modification Get Access 1.00 On Aircraft Remove the PFTU (46CS) from the Avionics Compartment. 1.00 Install the PFTU (46CS) in the Avionics Compartment. 2.00 Tests 1.50 Close-Up 1.00 TOTAL MANHOURS 6.50 ELAPSED TIME (HOURS) 6.50 Additional manhours related to Vendor SB; refer to: Modify the PFTU (46CS). SAGEM Service Bulletin No. 6259-27-006 H. WEIGHT AND BALANCE Not Changed I. ELECTRICAL LOAD DATA Not Changed J. REFERENCES

Aircraft Maintenance Manual (AMM) 12-34-24 27-22-52 27-99-00 ATA Common Support Data Dictionary (CSDD), Chapter 2 Elec. Std. Practices Manual (ESPM) 20-55-00 Master Minimum Equipment List (MMEL) MMEL 27-93-01-C Vendor Service Bulletin (VSB) SAGEM Service Bulletin No. 6259-27-006

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 4 5

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# @A340 SERVICE BULLETIN

K. PUBLICATION AFFECTED

Aircraft Wiring List (AWL) Illustrated Parts Catalog (IPC) 27-22-01 27-22-52 Master Minimum Equipment List (MMEL) This Service Bulletin has an operational impact. Please inform AIRBUS, at least four weeks in advance, in case you need your operational documentation to be amended by an intermediate revision prior to Service Bulletin embodiment. For this purpose, please request the intermediate revision by fax, telex or mail to : SEDCC, AIRBUS - Customer Services Directorate Fax No.: 33 (0) 5 61 93 28 06 Sita No.: TLSBP7X E-mail: sb.reporting@airbus.com These amendments will be confirmed by the next normal revision of operational documentation, once your Service Bulletin accomplishment report has been sent, as usual, to our Customer Services Directorate (SEDCC). L. INTERCHANGEABILITY/MIXABILITY DESCRIPTION OLD PART N ̊ NEW PART N ̊ INT MIXABILITY SEE NOTES PFTU 6259-2 6259-0311 01 Not Applicable NOTE: For definitions of interchangeability codes in column INT., refer to ATA Common Support Data Dictionary (CSDD), Chapter 2. M. SPARES PFTU 6259-2

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 5 5

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# @A340 SERVICE BULLETIN

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# @A340 SERVICE BULLETIN

2. MATERIAL INFORMATION **CONF ALL A. MATERIAL - PRICE AND AVAILABILITY (1) Procurement Addresses Equipment BFEA01 Modification of removed equipment should be negotiated directly with SAGEM as per instructions given in Service Bulletin No. 6259-27-006. (2) Price and Availability

Equipment BFEA01 Refer to SAGEM Service Bulletin No. 6259-27-006 for the equipment modification sales terms. B. INDUSTRY SUPPORT INFORMATION For Equipment BFEA01, refer to SAGEM for the industry support terms. C. LIST OF COMPONENTS No Kit D. LIST OF MATERIALS - OPERATOR SUPPLIED (1) Consumable Materials NOTE: To accomplish this Service Bulletin it is necessary to use the expendable parts listed in the AMM Task 27-22-52-400-801. (2) Components None (3) Equipment Equipment BFEA01 ITEM NEW PART N ̊ QTY (UM) KEYWORD ITEM OLD PART N ̊ INT SEE NOTES 6259-0311 1 PFTU 6259-2 01 (1) NOTE: For definitions of interchangeability codes in column INT., refer to ATA Common Support Data Dictionary (CSDD), Chapter 2. NOTE (1) : Modification of removed equipment should be negotiated directly with SAGEM as per instructions given in Service Bulletin No. 6259-27-006.

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 7 5

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# @A340 SERVICE BULLETIN

E. PARTS TO BE RE-IDENTIFIED BY OPERATOR None F. TOOLING (1) Tooling - Price and Availability None (2) Tools NOTE: To accomplish this Service Bulletin it is necessary to use the tools listed in the AMM Task 27-22-52-000-801 and AMM Task 27-22-52-400-801. (3) Special Tools None

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 8 5

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# @A340 SERVICE BULLETIN

3. ACCOMPLISHMENT INSTRUCTIONS Task 274167-831-801-001 - 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 Modified FIN 46CS Manpower TOTAL MANHOURS 6.50 ELAPSED TIME (HOURS) 6.50 Additional manhours related to Vendor SB; refer to: SAGEM Service Bulletin No. 6259-27-006 A. GENERAL (1) Subtask 274167-839-001-001 - Administrative Manpower Resources Skills NON SPECIFIC Write in the applicable aircraft records that you have done all the work given in this Service Bulletin. B. PREPARATION (1) Subtask 274167-941-001-001 - Job Set-up Manpower Resources Skills NON SPECIFIC DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 9 5

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# @A340 SERVICE BULLETIN

References Aircraft Maintenance Manual (AMM) Task 12-34-24-860-802 Task 27-22-52-000-801 (a) Make sure that the aircraft is electrically grounded, (Refer to AMM Task 12-34-24-860-802). (b) Put the access platform(s) in position. (c) Do the preparation procedure as specified in the removal of the PFTU (46CS), (Refer to AMM Task 27-22-52-000-801). C. PROCEDURE (1) Subtask 274167-831-001-001 - Remove the PFTU (46CS) from the Avionics Compartment. Manpower Resources Manhours 1.00 Minimum number of person 1 Subtask elapsed time 1.00 Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 27-22-52-000-801 (a) Remove (Refer to AMM Task 27-22-52-000-801) : FIN 46CS 1 PFTU 6259-2

(2) Subtask 274167-831-002-001 - Modify the PFTU (46CS). References Vendor Service Bulletin (VSB) SAGEM 6259-27-006 (a) Modify the PFTU (46CS), (Refer to SAGEM Service Bulletin No. 6259-27-006). (3) Subtask 274167-831-003-001 - Install the PFTU (46CS) in the Avionics Compartment. Manpower Resources Manhours 2.00 Minimum number of person 1 Subtask elapsed time 2.00 Skills NON SPECIFIC

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 10 5

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# @A340 SERVICE BULLETIN
Material necessary to do the job Equipment BFEA01 ITEM NEW PART N ̊ QTY (UM) KEYWORD SEE NOTES 6259-0311 1 PFTU (1) NOTE (1) : Modification of removed equipment should be negotiated directly with SAGEM as per instructions given in Service Bulletin No. 6259-27-006. References Aircraft Maintenance Manual (AMM) Task 27-22-52-400-801 (a) Install (Refer to AMM Task 27-22-52-400-801) : FIN 46CS 1 PFTU 6259-0311 D. TEST (1) Subtask 274167-700-001-001 - Testing Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 27-22-52-400-801 (a) Do the test after removal/installation of the PFTU (46CS), (Refer to AMM Task 27-22-52-400-801). E. CLOSE-UP (1) Subtask 274167-942-001-001 - Close-up Procedure. Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 27-22-52-400-801 (a) Do the close-up procedure as specified in the installation of the Pedal Feel and Trim Unit (46CS), (Refer to AMM Task 27-22-52-400-801).

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 11 5

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# @A340 SERVICE BULLETIN REPORTING SHEET 

### TITLE: FLIGHT CONTROLS - RUDDER TRIM ACTUATION AND ARTIFICIAL FEEL-INSTALL IMPROVED PFTU ON LR A/C MODIFICATION No.: 200667S31517 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.

DATE: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 1 5

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# @A340 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: May 03/10 SERVICE BULLETIN No.: A340-27-4167 REVISION No.: 00 - May 03/10 Page: 1 5

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