# @A340-500/600 SERVICE BULLETIN REVISION TRANSMITTAL SHEET 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 MANDATORYMANDATORY
ATA SYSTEM: 21

### TITLE: AIR CONDITIONING - CABIN PRESSURE CONTROL SYSTEMINSPECTION-SAFETY VALVE DESIGN LIFE EXCEEDANCE MODIFICATION No.: None This page transmits Revision No.01 of Service Bulletin No.A340-21-5044 ADDITIONAL WORK **CONF ALL No additional work is required by this revision for aircraft modified by any previous issue. REASON Revision No. 01 issued to modify the inspection flow chart and to modify accomplishment timescale. CHANGES FRONT MATTER AIR CONDITIONING - CABINPRESSURE CONTROL SYSTEMINSPECTION-SAFETY VALVE DESIGN LIFE EXCEEDANCE SB TITLE UPDATED R

SUMMARY REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES REASON UPDATED R EFFECTIVITY OPERATOR LIST UPDATED R MANPOWER MANPOWER UPDATED R PLANNING INFORMATION EFFECTIVITY EFFECTIVITY RELATED INFORMATION UPDATED R REASON History HISTORY UPDATED R Advantages ADVANTAGES UPDATED R Operational/Maintenance Consequences OPERATIONAL/MAINTENANCE CONSEQUENCES UPDATED R

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 1 6

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# @A340-500/600 SERVICE BULLETIN REVISION TRANSMITTAL SHEET
COMPLIANCE Accomplishment Timescale ACCOMPLISHMENT TIMESCALE UPDATED R MANPOWER MANPOWER UPDATED R REFERENCES REFERENCED DOCUMENTATION UPDATED R PUBLICATION AFFECTED PUBLICATIONS AFFECTED UPDATED R ACCOMPLISHMENT INSTRUCTIONS TASK 215044- 832-848-001-Inspection TASK SOLUTION UPDATED NOTE UPDATED R Task associated data - 001 REFERENCED DOCUMENTATION UPDATED R Subtask 215044-832-201-001 SUBTASK SOLUTION UPDATED CONFIGURATION UPDATED FIGURE REFERENCE UPDATED REFERENCED DOCUMENTATION UPDATED NOTE UPDATED R

Subtask 215044-835-201-001 SUBTASK SOLUTION ADDED N Fig. A-GFAAA Fig. A-GFAAA Sheet 01 SHEET UPDATED R Fig. A-GRAAA Fig. A-GRAAA Sheet 01 SHEET UPDATED R FILLING INSTRUCTIONS This Service Bulletin has been generated electronically and is reissued as a complete document. Replace the complete document. Put this Revision Transmittal Sheet in front of the Service Bulletin. HISTORY OF PREVIOUS REVISIONS No previous revision REVISION SEQUENCE ORIGINAL: Nov 17/11 REVISION No. : 01 - Apr 10/13

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 2 6

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# @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. 

# MANDATORY MANDATORYMANDATORY
ATA SYSTEM: 21

### TITLE: AIR CONDITIONING - CABIN PRESSURE CONTROL SYSTEMINSPECTION-SAFETY VALVE DESIGN LIFE EXCEEDANCE **CONF ALL MODIFICATIONS None REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES The Cabin Pressure Control System (CPCS) safety valves, installed on the aft pressure bulkhead, are parts of the pressure control and monitoring system. They prevent too much positive or negative differential pressure in the fuselage. The service life of the safety valve with Part Number (PN) 7012-18088 and 7012-18088-03 is limited to 50.000 Flight Hours (FH) or 12 years. This Inspection Service Bulletin details the work required to identify the safety valves having exceeded the service life limits. This Service Bulletin is also issued to advise all operators of A340-500/600 aircraft of the issue of Nord-Micro Service Bulletin No.18088-21-002. This Inspection Service Bulletin will identify valves having exceeded 50.000 FH or 12 years in order to ensure application of the restoration task to extend the service life to additional 50.000 FH or 12 years or to ensure replacement of safety valves by serviceable safety valves. Furthermore, the reliability of the pressure control and monitoring system will be increased. Accomplishment of A340 MRBR task 21.31.00/09 constitutes compliance with requirements of this Service Bulletin. GENERAL EVALUATION EVALUATION TABLE COMPLIANCE MANDATORY (1) CANCELS INSPECTION SB NO POTENTIAL AD YES A/C OPERATION AFFECTED NO RELIABILITY AFFECTED NO PAX COMFORT AFFECTED NO COST SAVING YES LROPS AFFECTED NO
DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 1 6

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# @A340-500/600 SERVICE BULLETIN SUMMARY EVALUATION TABLE STRUCTURAL LIFE EXTN NO VENDOR SB INVOLVED YES NOTE (1): Service Bulletin must be accomplished. MATERIAL PRICE INFORMATION No Material EFFECTIVITY This Service Bulletin is applicable to this (these) operator(s) :

06U 25R 36V 70U 72W AHY CES CHH DLH ETD HFY IBE QAF QTR SAA SIA TAM THA UAE VIR CONCURRENT REQUIREMENTS None REFERENCES / REPERCUSSIONS TFU None OEB None AOT None SIL None LINE MAINTENANCE AFFECTED No LIFE LIMIT None OTHER None NATURE OF THE WORK AIRCRAFT YES EQUIPMENT YES HARD NO SOFT NO OBRM NO MANPOWER Task 215044-832-848-001: Inspection TOTAL MANHOURS 5.00 ELAPSED TIME (HOURS) 5.00 Additional manhours related to Vendor SB; refer to: Restoration of safety valve Nord-Micro Service Bulletin No. 18088-21-002 APPENDICES None

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 2 6

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# @A340-500/600 SERVICE BULLETIN SUMMARY

**CONF ALL

FR80

FR72 316HL 318HL 317HL



## A **A** Z270

F_SB_215044_6_SAAA_01_00 Figure A-GSAAA - Sheet 01

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 3 6

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# @A340-500/600 SERVICE BULLETIN SUMMARY

This Page Intentionally Left Blank

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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



# MANDATORY MANDATORYMANDATORY
ATA SYSTEM: 21

### TITLE: AIR CONDITIONING - CABIN PRESSURE CONTROL SYSTEMINSPECTION-SAFETY VALVE DESIGN LIFE EXCEEDANCE MODIFICATION No.: None 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 (1) Models 340-541 340-542 340-642 (2) Effectivity by MSN 0371 0376 0383 0391 0394 0410 0416-0417 0426 0431 0436 0440 0445 0449 0453 0457 0460 0464 0468 0471 0475 0478 0482 0485 0488 0492 0495 0499 0514 0517 0520 0523 0531 0534 0537 0540 0543 0547 0557 0560 0563 0566 0569 0572 0575 0577 0580 0583 0586 0601 0604 0606 0608 0611 0615 0617 0619 0622 0624 0626 0628 0630 0639 0672 0677 0681 0685 0689 0694 0698 0702 0706 0710 0715 0719 0723 0727 0736 0740 0744 0748 0753 0757 0761-0768 0771 0775 0779 0783 0787 0790 0794 0798 0804 0812 0829 0837 0846 0848 0870 0886 0894 0897 0902 0910 0912 0917 0924 0929 0933 0953 0960 0972 0981 0987 0993 1005 1017 1030 1040 1079 1091 1102 1122

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 1 6

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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 06U 1091 1102 25R 0924 36V 0391 0416 70U 0902 72W 0917 AHY 0779 0886 0894 CES 0468 0488 0514 0577 0586 CHH 0436 0453 0475 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 0910 0912 IBE 0431 0440 0460 0601 0604 0606 0617 0619 0672 0702 0727 0744 0960 0993 1017 1079 1122 QAF 0495 QTR 0715 0740 0766 0798 SAA 0410 0417 0426 0531 0534 0547 0557 0626 0630 SIA 0478 0492 0499 0560 0563 TAM 0445 0464 THA 0624 0628 0677 0681 0689 0698 0710 0719 0775 0953 UAE 0394 0457 0471 0485 0520 0572 0608 0611 0685 0694 VIR 0371 0376 0383 0449 0575 0615 0622 0639 0706 0723 0736 0753 0764 0765 0768 0787 0804 (4) Configuration by MSN MSN CONFIGURATION 0371 0376 0383 0391 0394 0410 0416 0417 0426 0431 0436 0440 0445 0449 0453 0457 0460 0464 0468 0471 0475 0478 0482 0485 0488 0492 0495 0499 0514 0517 0520 0523 0531 0534 0537 0540 0543 0547 0557 0560 0563 0566 0569 0572 0575 0577 0580 0583 0586 0601 0604 0606 0608 0611 0615 0617 0619 0622 0624 0626 0628 0630 0639 0672 0677 0681 0685 0689 0694 0698 0702 0706 0710 0715 0719 0723 0727 0736 0740 0744 0748 0753 0757 0761 0762 0763 0764 0765 0766 0767 0768 0771 0775 0779 0783 0787 0790 0794 0798 0804 0812 0829 0837 0846 0848 0870 0886 0894 0897 0902 0910 0912 0917 0924 0929 0933 0953 0960 0972 0981 0987 0993 1005 1017 1030 1040 1079 1091 1102 1122 001

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 2 6

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# @A340-500/600 SERVICE BULLETIN (5) Configuration definition **CONF 001 Config. 001 is valid for all the aircraft given in the effectivity of this inspection Service Bulletin which have three safety valves installed. (6) Material Effectivity No Material Set B. CONCURRENT REQUIREMENTS None C. REASON (1) History The Cabin Pressure Control System (CPCS) safety valves, installed on the aft pressure bulkhead, are parts of the pressure control and monitoring system. They prevent too much positive or negative differential pressure in the fuselage. The service life of the safety valve with Part Number (PN) 7012-18088 and 7012-18088-03 is limited to 50.000 Flight Hours (FH) or 12 years. (2) Objective/Action This Inspection Service Bulletin details the work required to identify the safety valves having exceeded the service life limits. This Service Bulletin is also issued to advise all operators of A340-500/600 aircraft of the issue of Nord-Micro Service Bulletin No.18088-21-002. (3) Advantages This Inspection Service Bulletin will identify valves having exceeded 50.000 FH or 12 years in order to ensure application of the restoration task to extend the service life to additional 50.000 FH or 12 years or to ensure replacement of safety valves by serviceable safety valves. Furthermore, the reliability of the pressure control and monitoring system will be increased. (4) Operational/Maintenance Consequences Accomplishment of A340 MRBR task 21.31.00/09 constitutes compliance with requirements of this Service Bulletin. D. DESCRIPTION To accomplish this Service Bulletin it is necessary to : Task 215044-832-848-001: Inspection (1) Inspect the safety valve 316HL, 317HL and 318HL (2) Restoration of safety valve DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 3 6

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# @A340-500/600 SERVICE BULLETIN
E. COMPLIANCE (1) Classification MANDATORY: Service Bulletin must be accomplished. (2) Accomplishment Timescale This Service Bulletin has been classified Mandatory. It is expected that an Airworthiness Directive (AD) published by the European Aviation Safety Agency (EASA) will be issued to confirm this classification. It is anticipated that the AD will confirm the (thresholds and/or intervals and/or date) given below but reference should be made to the AD for confirmation of the mandated accomplishment timescale. Table 1, Config. All - General visual inspection of installed safety valve Condition Action Compliance All aircraft Check the approved maintenance records to determine the safety valve accumulated Flight Hours (FH) and years from first installation on an aircraft. None

The number of Flight Hours (FH) accumulated by the installed CPCS safety valve can be positively established Replace the CPCS safety valve with a CPCS serviceable safety valve Whichever occurs later between a) and b) a) before the safety valve has accumulated 50.000 Flight Hours (FH) or 12 years since manufacture or 12 years since last restoration according to VSB 18088-21-002, whichever occurs first or b) within 26 months after the Service Bulletin issue date The number of Flight Hours (FH) accumulation by the CPCS safety valve cannot be positively established Replace the CPCS safety valve with a CPCS serviceable safety valve Within 26 months after the Service Bulletin issue date CPCS Safety valve is replaced Complete and send the report sheet to AIRBUS Within 3 month after the replacement Definition for a serviceable CPCS safety valve: A serviceable CPCS safety valve is a safety valve which has accumulated less than 50.000 Flight Hours (FH) and not older than 12 years since manufacture or since last restoration according to VSB 18088-21-002. F. APPROVAL The technical content of this document is approved under the authority of Design Organisation Approval No. EASA.21J.031.

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 4 6

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# @A340-500/600 SERVICE BULLETIN 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 215044-832-848-001: Inspection Get Access 2.00 On Aircraft Inspect the safety valve 316HL, 317HL and 318HL 0.75 Tests 0.25 Close-Up 2.00 TOTAL MANHOURS 5.00 ELAPSED TIME (HOURS) 5.00 Additional manhours related to Vendor SB; refer to: Restoration of safety valve Nord-Micro Service Bulletin No. 18088-21-002 NOTE: For man-hours required for the accomplishment of this Service Bulletin, refer to Nord-Micro Service Bulletin No. 18088-21-002. H. WEIGHT AND BALANCE Not Changed I. ELECTRICAL LOAD DATA Not Changed J. REFERENCES

Aircraft Maintenance Manual (AMM) 06-20-00 06-31-53 06-40-00 12-34-24 21-31-52 25-22-41 25-33-55 Elec. Std. Practices Manual (ESPM) 20-55-00 Vendor Service Bulletin (VSB) Nord-Micro Service Bulletin No. 18088-21-002 K. PUBLICATION AFFECTED L. INTERCHANGEABILITY/MIXABILITY Not Applicable DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 5 6

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# @A340-500/600 SERVICE BULLETIN
M. SPARES None

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 6 6

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# @A340-500/600 SERVICE BULLETIN
2. MATERIAL INFORMATION **CONF ALL A. MATERIAL - PRICE AND AVAILABILITY (1) Procurement Addresses Modification of removed equipment should be negotiated directly with Nord-Micro P.O. Box 630225 D 60352 Frankfurt Germany For ordering by phone : +49 6109 303 435 For ordering by fax : +49 6109 303 641 as per instructions given in Vendor Service Bulletin No. 18088-21-002. (2) Price and Availability Refer to the vendor Service Bulletin No. 18088-21-002 for the equipment modification sales terms. B. INDUSTRY SUPPORT INFORMATION Refer to the Vendor Service Bulletin 18088-21-002 for the industry support terms. C. LIST OF COMPONENTS No Kit D. LIST OF MATERIALS - OPERATOR SUPPLIED None E. PARTS TO BE RE-IDENTIFIED BY OPERATOR None F. TOOLING None

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 7 6

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# @A340-500/600 SERVICE BULLETIN

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# @A340-500/600 SERVICE BULLETIN
3. ACCOMPLISHMENT INSTRUCTIONS Task 215044-832-848-001 - Inspection 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 260 270 Modified FIN 316HL 317HL 318HL Manpower TOTAL MANHOURS 5.00 ELAPSED TIME (HOURS) 5.00 Additional manhours related to Vendor SB; refer to: Nord-Micro Service Bulletin No. 18088-21-002 A. GENERAL NOTE: Accomplishment of A340 MRBR task 21.31.00/09 constitutes compliance with requirements of this Service Bulletin. (1) Subtask 215044-910-201-001 - Standard Practices Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 06-20-00, Page Block 001 06-31-53, Page Block 001 06-40-00, Page Block 001 DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 9 6

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# @A340-500/600 SERVICE BULLETIN (a) For identification of Zones (Refer to AMM 06-20-00, Page Block 001). (b) For the Frame identification (Refer to AMM 06-31-53, Page Block 001). (c) For the identification of access panels (Refer to AMM 06-40-00, Page Block 001). (d) Put blanking caps on the disconnected electrical connectors. (2) Subtask 215044-839-201-001 - 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 215044-941-201-001 - Job Set-up Work Zones and Access Panels Zone Access/Work location 260 Work location Frame 80 Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 12-34-24-860-802 Task 21-31-52-000-801 Task 25-22-41-000-801 Task 25-33-55-000-801 (a) Make sure that the aircraft is electrically grounded (Refer to AMM Task 12-34-24-860-802). (b) For the removal of attendant seat do the applicable job set-up procedure as given in AMM Task 25-22-41-000-801. (c) For the removal of aft stowage do the applicable job set-up procedure as given in AMM Task 25-33-55-000-801. (d) For the removal of safety valves do the applicable job set-up procedure as given in AMM Task 21-31-52-000-801. C. PROCEDURE (1) Subtask 215044-832-201-001 - Inspect the safety valve 316HL, 317HL and 318HL Work Zones and Access Panels Zone Access/Work location 270 Work location Frame 80
DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 10 6

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# @A340-500/600 SERVICE BULLETIN
Manpower Resources Manhours 0.75 Minimum number of person 1 Subtask elapsed time 0.75 Skills AIRFRAME References Aircraft Maintenance Manual (AMM) Task 21-31-52-000-801 Task 21-31-52-400-801 Vendor Service Bulletin (VSB) Nord-Micro 18088-21-002 Fig. A-GBAAA Inspect Savety valve Sheet 01 Fig. A-GFAAA Flow Chart Sheet 01 Fig. A-GRAAA Reporting Sheet Sheet 01 (a) Within the compliance time as given in paragraph 1.E.(2), do a general visual inspection of the installed Cabin Pressure Control System (CPCS) safety valves 316HL, 317HL and 318HL: - Check the approved maintenance records to determine the accumulated Flight Hours (FH) and years of installed safety valves since manufacture or since last restoration according to Vendor Service Bulletin (VSB) Nord-Micro Service Bulletin No. 18088-21-002. - Determine, if the installed safety valves are in agreement with the definition of the serviceable safety valve as given in the subsequent note and as shown on Fig. A-GFAAA Sheet 01

. NOTE: A serviceable safety valve as given in the subsequent paragraphs is defined as follows: - A safety valve without marked amendment letter which has accumulated less than 50.000 FH and is not older than 12 years since manufacture. - A safety valve with marked amendment letter(s) ’Z’, which has accumulated less than 50.000 FH and is not older than 12 years since the last restoration task per Vendor Service Bulletin (VSB) Nord-Micro Service Bulletin No. 18088-21-002, refer to SUBTASK 215044-835-201 001 Restoration of safety valve

. 1 If the safety valve has accumulated less than 50.000 FH and is not older than 12 years since manufacture or since last restoration, the inspected safety valve is serviceable. - Necessary action: Monitor the affected safety valve flight hours and years and replace it before accumulation of 50.000 FH or 12 years, whichever occurs first, by a serviceable Safety valve as follows: DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 11 6

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# @A340-500/600 SERVICE BULLETIN . Remove the affected safety valve as given in AMM Task 21-31-52-000-801. . Install a serviceable safety valve as given in AMM Task 21-31-52-400-801. - Refer to paragraph (b) ’Monitor the serviceable safety valve’. 2 If the safety valve has accumulated more than 50.000 FH or is older than 12 years since manufacture or since last restoration, whichever occurs first, the inspected safety valve is not serviceable and has to be replaced. - Necessary action: Replace the affected safety valve within 26 months after the Service Bulletin issue date by a serviceable safety valve as follows: . Remove the affected safety valve as given in AMM Task 21-31-52-000-801. . Install a serviceable safety valve as given in AMM Task 21-31-52-400-801. - Refer to paragraph (b) ’Monitor the serviceable safety valve’. 3 If the accumulated service life or manufacturing date can not be positively determined, the inspected safety valve is not serviceable and has to be replaced. - Necessary action: Replace the affected safety valve within 26 months after the Service Bulletin issue date by a serviceable safety valve as follows: . Remove the affected safety valve as given in AMM Task 21-31-52-000-801. . Install a serviceable safety valve as given in AMM Task 21-31-52-400-801. - Refer to paragraph (b) ’Monitor the serviceable safety valve’. (b) Monitor the installed safety valve life and replace it at interval not exceeding 50.000 FH or 12 years. (c) After replacement of the serviceable safety valve complete and send the Report Sheet within 3 months to AIRBUS, refer to Fig. A-GRAAA Sheet 01

. (2) Subtask 215044-835-201-001 - Restoration of safety valve References Vendor Service Bulletin (VSB) Nord-Micro 18088-21-002 (a) Do the restoration of the affected safety valve, refer to Nord-Micro Service Bulletin No. 18088-21-002.
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# @A340-500/600 SERVICE BULLETIN
D. TEST (1) Subtask 215044-710-201-001 - Operational Work Zones and Access Panels Zone Access/Work location 270 Work location Frame 80 Manpower Resources Skills AIRFRAME References Aircraft Maintenance Manual (AMM) Task 21-31-52-400-801 (a) Do an operational test as given in the installation of the safety valve (Refer to AMM Task 21-31-52-400-801). E. CLOSE-UP (1) Subtask 215044-942-201-001 - Close-up Work Zones and Access Panels Zone Access/Work location 270 Work location Frame 80 Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 21-31-52-400-801 Task 25-22-41-400-801 Task 25-33-55-400-801 (a) For the installation of safety valve do the close-up procedure as given in AMM Task 21-31-52-400-801. (b) For the installation of stowage 6535ML do the close-up procedure as given in AMM Task 25-33-55-400-801. (c) For the installation of the attendant seat do the close-up procedure as given in AMM Task 25-22-41-400-801. (d) Make sure that the work areas are clean and clear of tools and other items of equipment.

DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 13 6

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# @A340-500/600 SERVICE BULLETIN

**CONF ALL FR80

FR72 

### A 316HL 318HL 317HL



### B



## A Z270

F_SB_215044_6_BAAA_01_01 

## B 316HL 317HL 318HL

IDENTIFICATION PLATES

TYPICAL 

### C CONT INSP P/N S/N DATE C 0002 SAFETY VALVE 7012−18088 xxxxxxx xx xxx xx/xx

C 0002 

## AMENDMENTS

**C** PLACARDS TO BE INSPECTED

Figure A-GBAAA - Sheet 01 Inspect Savety valve
DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 14 6

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# @A340-500/600 SERVICE BULLETIN

**CONF ALL WITHIN THE COMPLIANCE TIME AFTER SB ISSUANCE (REFER TO TABLE 1 PARA. 1.E.(2) )

NO THE INSTALLED CPCS SAFETY VALVE IS A SERVICEABLE VALVE YES DETERMINE IF THE INSTALLED CPCS SAFETY VALVE IS A SERVICEABLE VALVE

WHICH HAS ACCUMULATED LESS THAN 50000 FH A SERVICEABLE CPCS SAFETY VALVE IS A SAFETY VALVE **NOTE:** 01 AND IS NOT OLDER THAN 12 YEARS SINCE MANUFACTURE OR YEARS SINCE LAST RESTORATION ACCORDING TO VSB 18088−21−002. REPLACE THE CPCS SAFTEY VALVE

ACCOMPLISHMENT OF A340 MRBR TASK 21.31.00/09 UNKNOWN

ACCORDING TABLE 1 IN PARA 1.E.(2)

AS APPLICABLE TO AIRCRAFT TYP CONSTITUTES COMPLIANCE WITH REQUIREMENTS OF THIS SERVICE BULLETIN. REFER TO , 01 (REFER TO ) 01

(REFER TO ) 01

LEGEND: CPCS = CABIN PRESURE CONTROL SYSTEM MRBR = MAINTENANCE REVIEW BOARD REPORT FH = FLIGHT HOUR

**NOTE:** 02

F_SB_215044_6_FAAA_01_13 Figure A-GFAAA - Sheet 01 Flow Chart
DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 15 6

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# @A340-500/600 SERVICE BULLETIN

**CONF ALL 

## REPORT SHEET
SERVICE BULLETIN NO:

DATE OF INSPECTION: A/C MSN: FLIGHT CYCLES: FLIGHT HOURS: A340−21−5044 AIRBUS DEPARTMENT SEEC5 CUSTOMER SERVICE DIRECTORATE 1 ROND POINT MAURICE BELLONTE 31707 BLAGNAC CEDEX FRANCE Please send reporting sheet to:

REMARKS : YES NO SAFETY VALVES 318HL
YES

NO YES

NO 316HL 317HL

EXCEEDED 50.000 FH OR 12 YEARS HAS THE AFFECTED SAFETY VALVE

AFFECTED SAFETY VALVE REPLACED WITH:

A SERVICEABLE SAFETY VALVE WHICH HAS NOT A SAFETY VALVE AMENDMENT "Z"

EXCEEDED 50.000 FH AND NOT OLDER THAN 12 YEARS OR THROUGH ACCOMPLISHMENT OF VENDOR SERVICE BULLETIN 18088−21−002

F_SB_215044_6_RAAA_01_06 Figure A-GRAAA - Sheet 01 Reporting Sheet
DATE: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 16 6

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# @A340-500/600 SERVICE BULLETIN REPORTING SHEET

### TITLE: AIR CONDITIONING - CABIN PRESSURE CONTROL SYSTEMINSPECTION-SAFETY VALVE DESIGN LIFE EXCEEDANCE MODIFICATION No.: None 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: Nov 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 1 6

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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 4321 - Quality rating of the Accomplishment Instructions 4321 - Quality rating of the Illustrations 4321 - 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 17/11 SERVICE BULLETIN No.: A340-21-5044 REVISION No.: 01 - Apr 10/13 Page: 1 6

Printed in FRANCE © AIRBUS S.A.S. 2007. All rights reserved.