# @A340-500/600 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: 34 

### TITLE: NAVIGATION - SENSORS POWER SUPPLY AND SWITCHING - INSTALL THALES ANGLE OF ATTACK SENSORS PN C16291AB **CONF ALL MODIFICATIONS MODIFICATION CLASSIFICATION MAJOR None MINOR 58555S30640 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 The design of the heater of THALES Angle Of Attack (AOA) sensor PN C16291AA suffers from an ageing issue, which affects the heating efficiency of the vane The loss of AOA heating efficiency appears over a number of flight hours which depends on the operational life of the AOA sensors, especially the number of flight cycles (vibration modes), power ON/OFF sequences, handling, etc... accumulated by the vane. At system level , consequences are a possible loss of windshear and/or alpha protection and/or spurious reversion into Alternate law. Airbus recommends operators to perform a recurrent functional test of the AOA heating on affected AOA sensor PN C16291AA, as per Inspection Service Bulletin No. A340-34-5062 (refer to OIT ref. SE999.0036/08/BB dated on 2nd May 2008). In order to increase the reliability of AOA sensors and to reduce the probability of vane heating failures, the vane of THALES AOA probe PN C16291AA has been redesigned. This Service Bulletin is published to inform all operators of A340-500/600 aircraft of the issue of THALES AVIONICS Service Bulletin No. C16291A-34-009. This Service Bulletin proposes replacement of the three Thales AOA sensors PN C16291AA by three new THALES AOA sensors PN C16291AB.

. DATE: Oct 09/09 SERVICE BULLETIN No.: A340-34-5070 REVISION No.: 00 - Oct 09/09 Page: 1 5

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# @A340-500/600 SERVICE BULLETIN SUMMARY Accomplishment of this Service Bulletin improves the reliability of AOA sensors and cancels the inspection requirements of Service Bulletins No. A340-34-5062. The consequences on schedule maintenance activities of the embodiment of this Service Bulletin are that the Maintenance Planning Document 341300-02-2 will be no more required after the accomplishment of this Service Bulletin. GENERAL EVALUATION EVALUATION TABLE COMPLIANCE RECOMMENDED CANCELS INSPECTION SB YES 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 Sensor EFFECTIVITY This Service Bulletin is applicable to this (these) operator(s) :

62X 72W AIB ARA DLH ETD HFY IBE KFR QAF QTR SAA TAM UAE CONCURRENT REQUIREMENTS None REFERENCES / REPERCUSSIONS TFU 34.10.00.038 OEB None AOT None SIL None LINE MAINTENANCE AFFECTED No LIFE LIMIT None OTHER OIT SE999.0036/08/BB NATURE OF THE WORK AIRCRAFT NO EQUIPMENT YES HARD YES SOFT NO OBRM NO

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# @A340-500/600 SERVICE BULLETIN SUMMARY MANPOWER Task 345070-831-801-001: Modification TOTAL MANHOURS 4.50 ELAPSED TIME (HOURS) 4.50 Additional manhours related to Vendor SB; refer to: Modify the AOA sensors 3FP1, 3FP2 and 3FP3 THALES AVIONICS Service Bulletin No. C16291A-34-009 APPENDICES None

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# @A340-500/600 SERVICE BULLETIN SUMMARY

**CONF ALL

FR19 FR18 

### A

3FP1 3FP2 3FP3 

### A **A**

TYPICAL INSTALLATION 

## A

F_SB_345070_5_SUAA_01_00 Figure A-FSUAA - Sheet 01

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# @A340-500/600 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: 34 

### TITLE: NAVIGATION - SENSORS POWER SUPPLY AND SWITCHING - INSTALL THALES ANGLE OF ATTACK SENSORS PN C16291AB MODIFICATION No.: 58555S30640 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 modification is embodied before delivery on aircraft MSN 1079 , 1091 and subsequent. This Service bulletin is only applicable to aircraft on which modification No. 49228S16346 (INSTALL ANGLE OF ATTACK SENSOR SEXTANT P/N C16291AA) is embodied. (1) Models 340-541 340-542 340-642 (2) Effectivity by MSN 0394 0410 0417 0426 0431 0440 0445 0457 0460 0464 0471 0482 0485 0495 0517 0520 0523 0531 0534 0537 0540 0543 0547 0557 0566 0569 0572 0580 0583 0601 0604 0606 0608 0611 0617 0619 0626 0630 0672 0685 0694 0702 0715 0727 0740 0744 0748 0757 0761-0763 0766-0767 0771 0779 0783 0790 0794 0798 0812 0829 0837 0846 0848 0856 0870 0886 0894 0897 0902 0910 0912 0917 0929 0933 0960 0972 0981 0987 0993 1005 1017 1030 1040

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# @A340-500/600 SERVICE BULLETIN (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 62X 0779 72W 0917 AIB 0856 ARA 0910 0912 DLH 0482 0517 0523 0537 0540 0543 0566 0569 0580 0583 0762 0763 0767 0771 0790 0794 0812 0846 0848 0897 0972 0981 0987 1005 ETD 0748 0757 0761 0783 0829 0837 0870 0929 0933 1030 1040 HFY 0894 IBE 0431 0440 0460 0601 0604 0606 0617 0619 0672 0702 0727 0744 0960 0993 1017 KFR 0886 0902 QAF 0495 QTR 0715 0740 0766 0798 SAA 0410 0417 0426 0531 0534 0547 0557 0626 0630 TAM 0445 0464 UAE 0394 0457 0471 0485 0520 0572 0608 0611 0685 0694 (4) Configuration by MSN MSN CONFIGURATION 0394 0410 0417 0426 0431 0440 0445 0457 0460 0464 0471 0482 0485 0495 0517 0520 0523 0531 0534 0537 0540 0543 0547 0557 0566 0569 0572 0580 0583 0601 0604 0606 0608 0611 0617 0619 0626 0630 0672 0685 0694 0702 0715 0727 0740 0744 0748 0757 0761 0762 0763 0766 0767 0771 0779 0783 0790 0794 0798 0812 0829 0837 0846 0848 0856 0870 0886 0894 0897 0902 0910 0912 0917 0929 0933 0960 0972 0981 0987 0993 1005 1017 1030 1040 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
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# @A340-500/600 SERVICE BULLETIN
C. REASON (1) History The design of the heater of THALES Angle Of Attack (AOA) sensor PN C16291AA suffers from an ageing issue, which affects the heating efficiency of the vane The loss of AOA heating efficiency appears over a number of flight hours which depends on the operational life of the AOA sensors, especially the number of flight cycles (vibration modes), power ON/OFF sequences, handling, etc... accumulated by the vane. At system level , consequences are a possible loss of windshear and/or alpha protection and/or spurious reversion into Alternate law. Airbus recommends operators to perform a recurrent functional test of the AOA heating on affected AOA sensor PN C16291AA, as per Inspection Service Bulletin No. A340-34-5062 (refer to OIT ref. SE999.0036/08/BB dated on 2nd May 2008). (2) Objective/Action In order to increase the reliability of AOA sensors and to reduce the probability of vane heating failures, the vane of THALES AOA probe PN C16291AA has been redesigned. This Service Bulletin is published to inform all operators of A340-500/600 aircraft of the issue of THALES AVIONICS Service Bulletin No. C16291A-34-009. This Service Bulletin proposes replacement of the three Thales AOA sensors PN C16291AA by three new THALES AOA sensors PN C16291AB.

. (3) Advantages Accomplishment of this Service Bulletin improves the reliability of AOA sensors and cancels the inspection requirements of Service Bulletins No. A340-34-5062. (4) Operational/Maintenance Consequences The consequences on schedule maintenance activities of the embodiment of this Service Bulletin are that the Maintenance Planning Document 341300-02-2 will be no more required after the accomplishment of this Service Bulletin. D. DESCRIPTION To accomplish this Service Bulletin it is necessary to : Task 345070-831-801-001: Modification (1) Remove the AOA sensors 3FP1, 3FP2 and 3FP3 (2) Modify the AOA sensors 3FP1, 3FP2 and 3FP3 (3) Install the AOA sensors 3FP1, 3FP2 and 3FP3
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# @A340-500/600 SERVICE BULLETIN
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. 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 345070-831-801-001: Modification Get Access 0.50 On Aircraft Remove the AOA sensors 3FP1, 3FP2 and 3FP3 1.50 Install the AOA sensors 3FP1, 3FP2 and 3FP3 1.50 Tests 0.50 Close-Up 0.50 TOTAL MANHOURS 4.50 ELAPSED TIME (HOURS) 4.50 Additional manhours related to Vendor SB; refer to: Modify the AOA sensors 3FP1, 3FP2 and 3FP3 THALES AVIONICS Service Bulletin No. C16291A-34-009 H. WEIGHT AND BALANCE Not Changed I. ELECTRICAL LOAD DATA Not Changed

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# @A340-500/600 SERVICE BULLETIN
J. REFERENCES

Aircraft Maintenance Manual (AMM) 12-34-24 34-11-19 ATA Common Support Data Dictionary (CSDD), Chapter 2 Elec. Std. Practices Manual (ESPM) 20-55-00 Service Bulletin (SB) A340-34-5062 Vendor Service Bulletin (VSB) THALES AVIONICS Service Bulletin No. C16291A-34-009 K. PUBLICATION AFFECTED

Aircraft Wiring List (AWL) Illustrated Parts Catalog (IPC) 34-11-01 34-11-19 Maintenance Planning Document (MPD) 34-13-00 L. INTERCHANGEABILITY/MIXABILITY DESCRIPTION OLD PART N ̊ NEW PART N ̊ INT MIXABILITY SEE NOTES AOA sensor C16291AA C16291AB 01 YES (1) NOTE: For definitions of interchangeability codes in column INT., refer to ATA Common Support Data Dictionary (CSDD), Chapter 2. NOTE: Only the mixability configuration(s) and condition(s) stated in this Service Bulletin are approved. NOTE (1) : Authorized without specific configuration / condition : it is possible to mix old and new PN on a same aircraft. M. SPARES AOA sensor C16291AA

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This Page Intentionally Left Blank

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# @A340-500/600 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 THALES AVIONICS as per instructions given in Service Bulletin No C16291A-34-009. (2) Price and Availability

Equipment BFEA01 Refer to the vendor Service Bulletin No C1629A-34-009 for the equipment modification sales terms. B. INDUSTRY SUPPORT INFORMATION Refer to the Vendor Service Bulletin (VSB) for the industry support terms. C. LIST OF COMPONENTS No Kit D. LIST OF MATERIALS - OPERATOR SUPPLIED (1) Consumable Materials None (2) Components None (3) Equipment Equipment BFEA01 ITEM NEW PART N ̊ QTY (UM) KEYWORD ITEM OLD PART N ̊ INT SEE NOTES C16291AB 3 SENSOR C16291AA 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

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# @A340-500/600 SERVICE BULLETIN
F. TOOLING None

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# @A340-500/600 SERVICE BULLETIN
3. ACCOMPLISHMENT INSTRUCTIONS Task 345070-831-801-001 - 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 121 122 Modified FIN 3FP1 3FP2 3FP3 Manpower TOTAL MANHOURS 4.50 ELAPSED TIME (HOURS) 4.50 Additional manhours related to Vendor SB; refer to: THALES AVIONICS Service Bulletin No. C16291A-34-009 A. GENERAL (1) Subtask 345070-839-001-001 - 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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# @A340-500/600 SERVICE BULLETIN
B. PREPARATION (1) Subtask 345070-941-001-001 - Job Set-up Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 12-34-24-860-802 Task 34-11-19-000-801 (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 AOA sensors (3FP1, 3FP2 and 3FP3), (Refer to AMM Task 34-11-19-000-801). C. PROCEDURE (1) Subtask 345070-900-001-001 - Remove the AOA sensors 3FP1, 3FP2 and 3FP3 Work Zones and Access Panels Zone Access/Work location 121 122 Manpower Resources Manhours 1.50 Minimum number of person 1 Subtask elapsed time 1.50 Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 34-11-19-000-801 (a) Remove the AOA sensors (Refer to AMM Task 34-11-19-000-801) : FIN 3FP1 1 AOA sensor C16291AA and FIN 3FP2 1 AOA sensor C16291AA and FIN 3FP3 1 AOA sensor C16291AA

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# @A340-500/600 SERVICE BULLETIN (2) Subtask 345070-831-001-001 - Modify the AOA sensors 3FP1, 3FP2 and 3FP3 References Vendor Service Bulletin (VSB) THALES AVIONICS C16291A-34-009 (a) Modify the AOA sensors (3FP1, 3FP2 and 3FP3) : Refer to THALES AVIONICS Service Bulletin No. C16291A-34-009 (3) Subtask 345070-900-002-001 - Install the AOA sensors 3FP1, 3FP2 and 3FP3 Work Zones and Access Panels Zone Access/Work location 121 122 Manpower Resources Manhours 1.50 Minimum number of person 1 Subtask elapsed time 1.50 Skills NON SPECIFIC Material necessary to do the job Equipment BFEA01 ITEM NEW PART N ̊ QTY (UM) KEYWORD SEE NOTES C16291AB 3 SENSOR References Aircraft Maintenance Manual (AMM) Task 34-11-19-400-801 (a) Install the AOA sensors (Refer to AMM Task 34-11-19-400-801) : FIN 3FP1 1 AOA sensor C16291AB and FIN 3FP2 1 AOA sensor C16291AB and FIN 3FP3 1 AOA sensor C16291AB

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# @A340-500/600 SERVICE BULLETIN
D. TEST (1) Subtask 345070-700-001-001 - Testing Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 34-11-19-400-801 (a) Job Set-up : 1 Remove the safety clips and tags and close the circuit breakers as specified after the installation of the AOA sensors (3FP1, 3FP2, 3FP3), (Refer to AMM Task 34-11-19-400-801). (b) Procedure : 1 Do a test procedure as specified after the installation of the AOA sensors (3FP1, 3FP2, 3FP3) (Refer to AMM Task 34-11-19-400-801). E. CLOSE-UP (1) Subtask 345070-942-001-001 - Close-up Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 34-11-19-400-801 (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 AOA sensors (3FP1, 3FP2, 3FP3), (Refer to AMM Task 34-11-19-400-801). (c) Restore the systems and aircraft to normal operating condition.

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# @A340-500/600 SERVICE BULLETIN REPORTING SHEET 

### TITLE: NAVIGATION - SENSORS POWER SUPPLY AND SWITCHING - INSTALL THALES ANGLE OF ATTACK SENSORS PN C16291AB MODIFICATION No.: 58555S30640 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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# @A340-500/600 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.

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