# @A300-600 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: 32 

### TITLE: LANDING GEAR - NORMAL EXTENSION AND RETRACTION - INSPECTION OF UPLOCK SPRINGS MODIFICATION No.: None This page transmits Revision No.01 of Service Bulletin No.A300-32-6111 ADDITIONAL WORK **CONF ALL No additional work is required by this revision for aircraft modified by any previous issue. REASON Revision No. 01 issued: - modify table 1 threshold value column and repetitive interval value column. - modify table 2 threshold value column and repetitive interval value column. - update figures. CHANGES SUMMARY EFFECTIVITY OPERATOR LIST UPDATED R Fig. A-FSAAA FIGURE SOLUTION UPDATED R Fig. A-FSAAA Sheet 01 SHEET UPDATED R Fig. A-FSAAA Sheet 02 SHEET DELETED D Fig. A-FSCAA FIGURE SOLUTION ADDED N Fig. A-FSCAA Sheet 01 SHEET ADDED N Fig. A-FSBAA FIGURE SOLUTION UPDATED R Fig. A-FSBAA Sheet 01 SHEET UPDATED R Fig. A-FSBAA Sheet 02 SHEET DELETED D Fig. A-FSDAA FIGURE SOLUTION ADDED N Fig. A-FSDAA Sheet 01 SHEET ADDED N
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A300-600 SERVICE BULLETIN REVISION TRANSMITTAL SHEET
PLANNING INFORMATION EFFECTIVITY EFFECTIVITY RELATED INFORMATION UPDATED R Configuration definition CONF 001 CONFIGURATION DEFINITION UPDATED R COMPLIANCE Accomplishment Timescale ACCOMPLISHMENT TIMESCALE UPDATED CONFIGURATION UPDATED R ACCOMPLISHMENT INSTRUCTIONS Fig. A-FBAAA Fig. A-FBAAA Sheet 01 SHEET UPDATED R Fig. A-FBAAA Sheet 02 SHEET UPDATED R Fig. A-FBBAA Fig. A-FBBAA Sheet 01 SHEET UPDATED R Fig. A-FBBAA Sheet 02 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: Jul 20/12 REVISION No. : 01 - Apr 25/13

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 2 5

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# @A300-600 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: 32 

### TITLE: LANDING GEAR - NORMAL EXTENSION AND RETRACTION - INSPECTION OF UPLOCK SPRINGS **CONF ALL MODIFICATIONS None REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES Airbus has analysed in-service events reported by Messier-Bugatti-Dowty concerning some cases of NLG and MLG Door and Leg Uplock spring ruptures on A300, A310 or A300-600 aircraft. Springs within the uplock are used to either lock the gear or the door in the up position or to participate in emergency mechanical unlocking. The springs are positioned in pairs and in case of rupture of one spring the other one remains to fulfil the function. The rupture of one spring has no consequence on the operation of the uplock whereas the rupture of both springs will disable the locking function or the emergency unlocking function.. This Service Bulletin is published to advise all operators of the issue of MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206 and MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880. This Service Bulletin includes a detailed inspection of the NLG and MLG Door and Leg Uplock springs and replacement in case of finding. Accomplishment of this Service Bulletin will ensure correct operation of the NLG and MLG Door and Leg Uplocks. 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 DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A300-600 SERVICE BULLETIN SUMMARY EVALUATION TABLE COST SAVING NO ETOPS AFFECTED NO STRUCTURAL LIFE EXTN NO VENDOR SB INVOLVED YES A/C JACKING YES NOTE (1): Service Bulletin must be accomplished. NOTE: A/C jacking is necessary if functional tests are required. MATERIAL PRICE INFORMATION No Material EFFECTIVITY This Service Bulletin is applicable to this (these) operator(s) :

14S 34Z 77T ABD ABR AHK BCS CES F2I FDX G8E I2L IRA IRM KAC KAL MNB MON MSR MXU OHY QTR RLB SUD TAR THA TMA U1T UPS URS UZB 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 NO HARD NO SOFT NO OBRM NO MANPOWER Task 326111-832-801-001: Inspection TOTAL MANHOURS 9.00 ELAPSED TIME (HOURS) 9.00 Additional manhours related to Vendor SB; refer to:

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 2 5

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# @A300-600 SERVICE BULLETIN SUMMARY Task 326111-832-801-001: Inspection Do a Detailed Inspection of the MLG and MLG Door Uplock Springs MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206 MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880 Do a Detailed Inspection of the NLG and NLG Door Uplock Springs MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206 MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880 APPENDICES Appendix 01 : Inspection Report

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 3 5

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# @A300-600 SERVICE BULLETIN SUMMARY

**CONF ALL



## A

LH SIDE SHOWN RH SIDE SYMMETRICAL 

### A **A**



## B FR47 FR50 FR54



### B **B**



## A **A NOTE:**  01 01

DEPENDING ON THE PN, THERE ARE 1 PAIR OF SPRINGS OR 2 PAIRS OF SPRINGS AT THIS POSITION FREE FALL SPRINGS

SPRINGS ATTACHED TO THE HOOK (HOOK SPRINGS) AND SPRINGS ATTACHED TO THE LEVER 

### A

− Z147 Z148

(LEVER SPRINGS)

D_SB_326111_5_SAAA_01_09 Figure A-FSAAA - Sheet 01 Main Landing Gear Uplock
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 4 5

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# @A300-600 SERVICE BULLETIN SUMMARY

**CONF ALL



## A FR47 FR50 FR54

HOOK SPRINGS TO BE INSPECTED LH SIDE SHOWN RH SIDE SYMMETRICAL 

### B

**B**



## B

**A A**  **A**

**A A** 

− Z147 Z148

D_SB_326111_5_SCAA_01_00 Figure A-FSCAA - Sheet 01 Main Landing Gear Door Uplock
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 5 5

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# @A300-600 SERVICE BULLETIN SUMMARY

**CONF ALL

− Z123 Z124 

### A

**A A** 



## A

**A A**  PAIR OF HOOK SPRINGS TO BE INSPECTED PAIR OF FREE FALL SPRINGS TO BE INSPECTED

D_SB_326111_5_SBAA_01_02 Figure A-FSBAA - Sheet 01 Nose Landing Gear Uplock
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 6 5

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# @A300-600 SERVICE BULLETIN SUMMARY

**CONF ALL

− Z123 Z124

HOOK SPRING TO BE INSPECTED 

### A **A**

**A** 

## A

**A A** 

D_SB_326111_5_SDAA_01_00 Figure A-FSDAA - Sheet 01 Nose Landing Gear Door Uplock
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 7 5

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# @A300-600 SERVICE BULLETIN SUMMARY

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# @A300-600 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: 32 

### TITLE: LANDING GEAR - NORMAL EXTENSION AND RETRACTION - INSPECTION OF UPLOCK SPRINGS 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 B4-603 B4-605R B4-620 B4-622 B4-622R C4-605R/F C4-620 F4-605R F4-622R (2) Effectivity by MSN 0284 0294 0301 0307 0312 0321 0336 0344 0348 0351 0358 0361 0365 0380 0388 0401 0405 0408 0411 0414 0417 0462 0464-0465 0477 0479 0505-0506 0509 0514 0516 0518 0521 0525 0529-0530 0532 0536 0540 0543 0546 0553-0561 0563 0566 0569 0572 0575 0577 0579 0581-0582 0584 0602-0605 0607-0611 0613-0614 0617-0618 0621 0623 0625-0633 0635 0637 0641 0643 0657 0659 0662 0664 0666 0668 0670 0673 0677 0679 0681 0683 0685 0688 0692 0694 0696 0699 0701 0703 0705 0707 0709 0711 0713 0715 0717 0719 0721-0746 0748-0750 0752-0764 0766-0775 0777-0794 0797 0799-0841 0845-0878

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A300-600 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 14S 0609 34Z 0685 0692 0731 77T 0838 ABD 0529 0557 ABR 0683 0770 AHK 0855 0856 0857 0858 0859 0860 0870 0871 BCS 0602 0617 0621 0637 0641 0670 0679 0703 0711 0724 0729 0730 0737 0740 0753 0783 CES 0521 0525 0532 0707 0725 0732 0741 0746 0754 0763 F2I 0284 0294 0301 0307 0312 0321 0336 0348 0351 0518 0610 FDX 0358 0361 0365 0388 0417 0477 0479 0530 0536 0543 0555 0559 0572 0575 0579 0581 0611 0613 0625 0630 0633 0657 0659 0664 0668 0688 0709 0713 0715 0726 0728 0735 0736 0738 0742 0745 0748 0752 0757 0759 0760 0761 0766 0768 0769 0771 0772 0774 0777 0778 0779 0780 0781 0789 0790 0791 0792 0793 0794 0799 0800 0801 0802 0803 0804 0873 0874 0875 0876 0877 0878 G8E 0462 0465 0506 0509 0514 0516 I2L 0677 0743 IRA 0632 0696 0723 0727 IRM 0380 0401 0405 0408 0411 0414 0546 0553 0608 0618 0623 0701 0750 0762 0773 KAC 0344 0673 0694 0699 0719 0721 KAL 0582 0627 0631 0662 MNB 0734 0739 0755 0756 0758 MON 0540 0556 0604 0605 MSR 0561 0607 MXU 0767 0788 0797 0836 0837 OHY 0584 0603 0744 0749 0764 QTR 0554 0560 0614 RLB 0626 0643 SUD 0666 0775 TAR 0505 0558 0563 THA 0464 0566 0569 0577 0629 0635 0681 0705 0782 0784 0785 0786 0787 TMA 0872 U1T 0628 UPS 0805 0806 0807 0808 0809 0810 0811 0812 0813 0814 0815 0816 0817 0818 0819 0820 0821 0822 0823 0824 0825 0826 0827 0828 0829 0830 0831 0832 0833 0834 0835 0839 0840 0841 0845 0846 0847 0848 0849 0850 0851 0852 0853 0854 0861 0862 0863 0864 0865 0866 0867 0868 0869
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 2 5

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# @A300-600 SERVICE BULLETIN

OPERATOR MSN URS 0733 UZB 0717 0722 (4) Configuration by MSN MSN CONFIGURATION 0284 0294 0301 0307 0312 0321 0336 0344 0348 0351 0358 0361 0365 0380 0388 0401 0405 0408 0411 0414 0417 0462 0464 0465 0477 0479 0505 0506 0509 0514 0516 0518 0521 0525 0529 0530 0532 0536 0540 0543 0546 0553 0554 0555 0556 0557 0558 0559 0560 0561 0563 0566 0569 0572 0575 0577 0579 0581 0582 0584 0602 0603 0604 0605 0607 0608 0609 0610 0611 0613 0614 0617 0618 0621 0623 0625 0626 0627 0628 0629 0630 0631 0632 0633 0635 0637 0641 0643 0657 0659 0662 0664 0666 0668 0670 0673 0677 0679 0681 0683 0685 0688 0692 0694 0696 0699 0701 0703 0705 0707 0709 0711 0713 0715 0717 0719 0721 0722 0723 0724 0725 0726 0727 0728 0729 0730 0731 0732 0733 0734 0735 0736 0737 0738 0739 0740 0741 0742 0743 0744 0745 0746 0748 0749 0750 0752 0753 0754 0755 0756 0757 0758 0759 0760 0761 0762 0763 0764 0766 0767 0768 0769 0770 0771 0772 0773 0774 0775 0777 0778 0779 0780 0781 0782 0783 0784 0785 0786 0787 0788 0789 0790 0791 0792 0793 0794 0797 0799 0800 0801 0802 0803 0804 0805 0806 0807 0808 0809 0810 0811 0812 0813 0814 0815 0816 0817 0818 0819 0820 0821 0822 0823 0824 0825 0826 0827 0828 0829 0830 0831 0832 0833 0834 0835 0836 0837 0838 0839 0840 0841 0845 0846 0847 0848 0849 0850 0851 0852 0853 0854 0855 0856 0857 0858 0859 0860 0861 0862 0863 0864 0865 0866 0867 0868 0869 0870 0871 0872 0873 0874 0875 0876 0877 0878 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 B. CONCURRENT REQUIREMENTS None C. REASON (1) History Airbus has analysed in-service events reported by Messier-Bugatti-Dowty concerning some cases of NLG and MLG Door and Leg Uplock spring ruptures on A300, A310 or A300-600 aircraft.

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 3 5

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# @A300-600 SERVICE BULLETIN Springs within the uplock are used to either lock the gear or the door in the up position or to participate in emergency mechanical unlocking. The springs are positioned in pairs and in case of rupture of one spring the other one remains to fulfil the function. The rupture of one spring has no consequence on the operation of the uplock whereas the rupture of both springs will disable the locking function or the emergency unlocking function.. (2) Objective/Action This Service Bulletin is published to advise all operators of the issue of MESSIERBUGATTI-DOWTY Service Bulletin No. 470-32-206 and MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880. This Service Bulletin includes a detailed inspection of the NLG and MLG Door and Leg Uplock springs and replacement in case of finding. (3) Advantages Accomplishment of this Service Bulletin will ensure correct operation of the NLG and MLG Door and Leg Uplocks. (4) Operational/Maintenance Consequences None D. DESCRIPTION To accomplish this Service Bulletin it is necessary to : Task 326111-832-801-001: Inspection (1) Do a Detailed Inspection of the MLG and MLG Door Uplock Springs (2) Do a Detailed Inspection of the NLG and NLG Door Uplock Springs (3) Replace the involved MLG door uplock (4) Replace the involved MLG uplock (5) Replace the involved NLG door uplock (6) Replace the involved NLG uplock E. COMPLIANCE (1) Classification MANDATORY: Service Bulletin must be accomplished.

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 4 5

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# @A300-600 SERVICE BULLETIN (2) Accomplishment Timescale TABLE 1 : DETAILED INSPECTION OF MLG AND MLG DOOR UPLOCK SPRINGS COMPLIANCE TIME Condition Action THRESHOLD (whichever occurs first) GRACE PERIOD Repetitive Interval Config.001 Apply SUBTASK 326111-832-001 001 Do a Detailed Inspection of the MLG and MLG Door Uplock Springs 18 months from the Service Bulletin issuance date None Repeat this inspection SB every 18 months Spring is not broken and not damaged None None Repeat this inspection SB every 18 months Hook spring is broken or damaged on MLG door uplock Apply SUBTASK 326111-833-001 001 Replace the involved MLG door uplock before the next flight 2 months Repeat this inspection SB every 18 months Free fall spring is broken or damaged on MLG uplock Apply SUBTASK 326111-833-002 001 Replace the involved MLG uplock before the next flight 1,000 FC with inspection every 50 FC, refer SUBTASK 326111-832-001-001 para. (1).(b) Repeat this inspection SB every 18 months Two free fall springs are broken or damaged on MLG uplock Apply SUBTASK 326111-833-002 001 Replace the involved MLG uplock before the next flight None Repeat this inspection SB every 18 months Hook and/or Lever springs are broken or damaged on MLG uplock Apply SUBTASK 326111-833-002 001 Replace the involved MLG uplock before the next flight 1,000 FC with inspection every 50 FC, refer SUBTASK 326111-832-001-001 para. (1).(b) Repeat this inspection SB every 18 months

Table 1

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 5 5

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# @A300-600 SERVICE BULLETIN

TABLE 2 : DETAILED INSPECTION OF NLG AND NLG DOOR UPLOCK SPRINGS COMPLIANCE TIME Condition Action THRESHOLD (whichever occurs first) GRACE PERIOD Repetitive Interval Config.001 Apply SUBTASK 326111-832-002 001 Do a Detailed Inspection of the NLG and NLG Door Uplock Springs 18 months from the Service Bulletin issuance date None Repeat this inspection SB every 18 months Spring is not broken and not damaged None None Repeat this inspection SB every 18 months Hook spring is broken or damaged on NLG door uplock Apply SUBTASK 326111-833-003 001 Replace the involved NLG door uplock before the next flight 2 months Repeat this inspection SB every 18 months
Free fall spring is broken or damaged on NLG uplock Apply SUBTASK 326111-833-004 001 Replace the involved NLG uplock before the next flight 1,000 FC with inspection every 50 FC, refer SUBTASK 326111-832-002-001 para. (2).(b) Repeat this inspection SB every 18 months Two free fall springs are broken or damaged on NLG uplock Apply SUBTASK 326111-833-004 001 Replace the involved NLG uplock before the next flight None Repeat this inspection SB every 18 months
Hook spring is broken or damaged on NLG uplock Apply SUBTASK 326111-833-004 001 Replace the involved NLG uplock before the next flight 1,000 FC with inspection every 50 FC, refer SUBTASK 326111-832-002-001 para. (2).(b) Repeat this inspection SB every 18 months Table 2 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 above but reference should be made to the AD for confirmation of the mandated accomplishment timescale.

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 6 5

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# @A300-600 SERVICE BULLETIN
F. APPROVAL The technical content of this document is approved under the authority of 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 326111-832-801-001: Inspection Get Access 2.00 On Aircraft Replace the involved MLG door uplock 1.00 Replace the involved MLG uplock 1.00 Replace the involved NLG door uplock 1.00 Replace the involved NLG uplock 1.00 Tests 1.00 Close-Up 2.00 TOTAL MANHOURS 9.00 ELAPSED TIME (HOURS) 9.00 Additional manhours related to Vendor SB; refer to: Do a Detailed Inspection of the MLG and MLG Door Uplock Springs MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206 MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880 Do a Detailed Inspection of the NLG and NLG Door Uplock Springs MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206 MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880 H. WEIGHT AND BALANCE Not Changed I. ELECTRICAL LOAD DATA Not Changed

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 7 5

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# @A300-600 SERVICE BULLETIN
J. REFERENCES

Aircraft Maintenance Manual (AMM) 24-00-00 32-12-11 32-22-11 32-31-14 32-31-21 32-31-33 32-31-44 Elec. Std. Practices Manual (ESPM) 20-55-00 Vendor Service Bulletin (VSB) MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206 MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880 K. PUBLICATION AFFECTED

Maintenance Planning Document (MPD) 32-31-14 32-31-33 L. INTERCHANGEABILITY/MIXABILITY Not Applicable M. SPARES None

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 8 5

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# @A300-600 SERVICE BULLETIN
2. MATERIAL INFORMATION **CONF ALL A. MATERIAL - PRICE AND AVAILABILITY (1) Procurement Addresses Modification of removed equipment should be negotiated directly with MESSIERBUGATTI-DOWTY as per instructions given in Service Bulletins No. 470-32-206 and 470-32-880. (2) Price and Availability No AIRBUS kit will be provided. Refer to the Vendor Service Bulletins No. 470-32-206 and 470-32-880 for the equipment modification sales terms. B. INDUSTRY SUPPORT INFORMATION Refer to the MESSIER-BUGATTI-DOWTY Service Bulletins No. 470-32-206 and 470-32-880 for the industry support terms of the Vendor Service Bulletin parts and labor. 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: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 9 5

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# @A300-600 SERVICE BULLETIN

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# @A300-600 SERVICE BULLETIN
3. ACCOMPLISHMENT INSTRUCTIONS Task 326111-832-801-001 - 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 123 124 147 148 Manpower TOTAL MANHOURS 9.00 ELAPSED TIME (HOURS) 9.00 Additional manhours related to Vendor SB; refer to: MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206 MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880 A. GENERAL (1) Subtask 326111-839-001-001 - Administrative Manpower Resources Skills NON SPECIFIC (a) Write in the applicable aircraft records that you have done all the work given in this Service Bulletin.

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 11 5

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# @A300-600 SERVICE BULLETIN
B. PREPARATION (1) Subtask 326111-941-001-001 - Job Set-up Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 24-00-00, Page Block 301 32-12-11, Page Block 301 32-22-11, Page Block 301 32-31-14, Page Block 401 32-31-21, Page Block 401 32-31-33, Page Block 401 32-31-44, Page Block 401 (a) Make sure that the aircraft is electrically grounded (Refer to AMM 24-00-00, Page Block 301). (b) Put the access platform(s) in position at zones 147, 148, 123 and 124. (c) Open the NLG doors (Refer to AMM 32-22-11, Page Block 301). (d) Open the MLG doors (Refer to AMM 32-12-11, Page Block 301). (e) Do the preparation procedure as specified in the removal of the MLG uplocks and door uplocks (Refer to AMM 32-31-44, Page Block 401 and AMM 32-31-33, Page Block 401). (f) Do the preparation procedure as specified in the removal of the NLG uplocks and door uplocks (Refer to AMM 32-31-21, Page Block 401 and AMM 32-31-14, Page Block 401). C. PROCEDURE (1) Subtask 326111-832-001-001 - Do a Detailed Inspection of the MLG and MLG Door Uplock Springs Work Zones and Access Panels Zone Access/Work location 147 148 References Vendor Service Bulletin (VSB) MESSIER-BUGATTI-DOWTY 470-32-206 MESSIER-BUGATTI-DOWTY 470-32-880 Fig. A-FBAAA Area to be Inspected Sheet 01 Sheet 02 Fig. A-FFAAA Flow Chart Sheet 01 At the threshold given in the Planning Information Paragraph E.(2): DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 12 5

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# @A300-600 SERVICE BULLETIN (a) Do a detailed inspection of the springs of the main landing gear door uplocks in accordance with MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206: refer to Fig. A-FBAAA Sheet 01 , Fig. A-FBAAA Sheet 02 and Fig. A-FFAAA Sheet 01 1 If load check is incorrect:
a Apply SUBTASK 326111-833-001 001 Replace the involved MLG door uplock b Send inspection report to AIRBUS.
c Repeat inspection at interval given in planning information paragraph E.(2). 2 If load check is correct:
a Send inspection report to AIRBUS. b Repeat inspection at interval given in planning information paragraph E.(2). (b) Do a detailed visual inspection of the springs of the main landing gear uplocks in accordance MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880: refer to Fig. A-FBAAA Sheet 01 , Fig. A-FBAAA Sheet 02 and Fig. A-FFAAA Sheet 01 1 If spring is damaged:
a Apply SUBTASK 326111-833-002 001 Replace the involved MLG uplock b Send inspection report to AIRBUS.
c Repeat inspection at interval given in planning information paragraph E.(2). 2 If spring is not damaged
a Send inspection report to AIRBUS. b Repeat inspection at interval given in planning information paragraph E.(2). (2) Subtask 326111-832-002-001 - Do a Detailed Inspection of the NLG and NLG Door Uplock Springs Work Zones and Access Panels Zone Access/Work location 123 124

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 13 5

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# @A300-600 SERVICE BULLETIN

References Vendor Service Bulletin (VSB) MESSIER-BUGATTI-DOWTY 470-32-206 MESSIER-BUGATTI-DOWTY 470-32-880 Fig. A-FBBAA Area to be Inspected Sheet 01 Sheet 02 Fig. A-FFAAA Flow Chart Sheet 01 At the threshold given in the Planning Information Paragraph E.(2): (a) Do a detailed inspection of the springs of the nose landing gear door uplocks in accordance with MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-206: refer to Fig. A-FBBAA Sheet 01 , Fig. A-FBBAA Sheet 02 and Fig. A-FFAAA Sheet 01 1 If load check is incorrect:
a Apply SUBTASK 326111-833-003 001 Replace the involved NLG door uplock b Send inspection report to AIRBUS.
c Repeat inspection at interval given in planning information paragraph E.(2). 2 If load check is correct:
a Send inspection report to AIRBUS. b Repeat inspection at interval given in planning information paragraph E.(2). (b) Do a detailed inspection of the springs of the nose landing gear uplocks in accordance with MESSIER-BUGATTI-DOWTY Service Bulletin No. 470-32-880: refer to Fig. A-FBBAA Sheet 01 , Fig. A-FBBAA Sheet 02 and Fig. A-FFAAA Sheet 01 1 If spring is damaged:
a Apply SUBTASK 326111-833-004 001 Replace the involved NLG uplock b Send inspection report to AIRBUS.
c Reinspect at interval given in planning information paragraph E.(2). 2 If spring is not damaged
a Send inspection report to AIRBUS. b Reinspect at interval given in planning information paragraph E.(2).

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 14 5

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# @A300-600 SERVICE BULLETIN (3) Subtask 326111-833-001-001 - Replace the involved MLG door uplock Work Zones and Access Panels Zone Access/Work location 148 147 Manpower Resources Manhours 1.00 Minimum number of person 1 Subtask elapsed time 1.00 Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 32-31-33, Page Block 401 (a) Remove the involved MLG door uplock (Refer to AMM 32-31-33, Page Block 401. (b) Send the involved MLG door uplock in shop for repair. (c) Install a serviceable MLG door uplock (Refer to AMM 32-31-33, Page Block 401. (4) Subtask 326111-833-002-001 - Replace the involved MLG uplock Work Zones and Access Panels Zone Access/Work location 147 148 Manpower Resources Manhours 1.00 Minimum number of person 1 Subtask elapsed time 1.00 Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 32-31-44, Page Block 401 (a) Remove the involved MLG gear uplock (Refer to AMM 32-31-44, Page Block 401). (b) Send the involved MLG gear uplock in shop for repair. (c) Install a serviceable MLG gear uplock (Refer to AMM 32-31-44, Page Block 401). (5) Subtask 326111-833-003-001 - Replace the involved NLG door uplock Work Zones and Access Panels Zone Access/Work location 123 124 DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 15 5

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# @A300-600 SERVICE BULLETIN
Manpower Resources Manhours 1.00 Minimum number of person 1 Subtask elapsed time 1.00 Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 32-31-14, Page Block 401 (a) Remove the involved NLG door uplock (Refer to AMM 32-31-14, Page Block 401). (b) Send the involved NLG door uplock in shop for repair. (c) Install a serviceable NLG door uplock (Refer to AMM 32-31-14, Page Block 401). (6) Subtask 326111-833-004-001 - Replace the involved NLG uplock Work Zones and Access Panels Zone Access/Work location 123 124 Manpower Resources Manhours 1.00 Minimum number of person 1 Subtask elapsed time 1.00 Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 32-31-21, Page Block 401 (a) Remove the involved NLG gear uplock (Refer to AMM 32-31-21, Page Block 401). (b) Send the involved NLG gear uplock in shop for repair. (c) Install a serviceable NLG gear uplock (Refer to AMM 32-31-21, Page Block 401). D. TEST (1) Subtask 326111-700-001-001 - Testing Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 32-31-14, Page Block 401 32-31-21, Page Block 401 32-31-33, Page Block 401 32-31-44, Page Block 401

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 16 5

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# @A300-600 SERVICE BULLETIN (a) If a MLG or a MLG door uplock have been replaced: Do the test procedure as specified after the installation of MLG uplocks and door uplocks (Refer to AMM 32-31-44, Page Block 401 and AMM 32-31-33, Page Block 401). (b) If a NLG or a NLG door uplock have been replaced: Do the test procedure as specified after the installation of NLG uplocks and door uplocks (Refer to AMM 32-31-21, Page Block 401 and AMM 32-31-14, Page Block 401). E. CLOSE-UP (1) Subtask 326111-942-001-001 - Close-up Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 32-12-11, Page Block 301 32-22-11, Page Block 301 32-31-14, Page Block 401 32-31-21, Page Block 401 32-31-33, Page Block 401 32-31-44, Page Block 401 (a) Do the close-up procedure as specified in the installation of the MLG uplocks and door uplocks (Refer to AMM 32-31-44, Page Block 401 and AMM 32-31-33, Page Block 401). (b) Do the close-up procedure as specified in the installation of the NLG uplocks and door uplocks (Refer to AMM 32-31-21, Page Block 401 and AMM 32-31-14, Page Block 401). (c) Close the NLG doors (Refer to AMM 32-22-11, Page Block 301). (d) Close the MLG doors (Refer to AMM 32-12-11, Page Block 301). (e) Remove the access platform(s). (f) Restore the aircraft and the systems to normal operating conditions.

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 17 5

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# @A300-600 SERVICE BULLETIN

**CONF ALL



## A

LH SIDE SHOWN RH SIDE SYMMETRICAL 

### A **A**



## B FR47 FR50 FR54



### C

**C B**  **B**



## A **A NOTE:**  01 01

DEPENDING ON THE PN, THERE ARE 1 PAIR OF SPRINGS OR 2 PAIRS OF SPRINGS AT THIS POSITION FREE FALL SPRINGS

SPRINGS ATTACHED TO THE HOOK (HOOK SPRINGS) AND SPRINGS ATTACHED TO THE LEVER 

### A

− Z147 Z148

(LEVER SPRINGS)

D_SB_326111_5_BAAA_01_08 Figure A-FBAAA - Sheet 01 Area to be Inspected
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 18 5

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# @A300-600 SERVICE BULLETIN

**CONF ALL

HOOK SPRINGS TO BE INSPECTED LH SIDE SHOWN RH SIDE SYMMETRICAL 

### B

**B** 

## C

**B B** 
D_SB_326111_5_BAAA_02_01 Figure A-FBAAA - Sheet 02 Area to be Inspected
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 19 5

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# @A300-600 SERVICE BULLETIN

**CONF ALL

− Z123 Z124 

### A

**B**

**A A** 



## A

**A A**  PAIR OF HOOK SPRINGS TO BE INSPECTED PAIR OF FREE FALL SPRINGS TO BE INSPECTED

D_SB_326111_5_BBAA_01_01 Figure A-FBBAA - Sheet 01 Area to be Inspected
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 20 5

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# @A300-600 SERVICE BULLETIN

**CONF ALL

HOOK SPRING TO BE INSPECTED 

### B **B**



## B **B B** 

D_SB_326111_5_BBAA_02_02 Figure A-FBBAA - Sheet 02 Area to be Inspected
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 21 5

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# @A300-600 SERVICE BULLETIN

**CONF ALL

QUESTION ACTION FINDING YES OR DAMAGED SPRINGS BROKEN AS DESCRIBED IN SUBTASKS 326111−832−001−001

NO

SHOP FOR REPAIR AND REPLACE IT

SEND THE INVOLVED UPLOCK IN

AS DESCRIBED IN SUBTASK(S) 326111−833−001−001 AND/OR 326111−833−002−001 AND/OR 326111−833−003−001 AND/OR 326111−833−004−001 AND DOOR UPLOCK SPRINGS AT THRESHOLD GIVEN IN THE PLANNING INFORMATION PARAGRAPH 1.E.(2). DO A DETAILED INSPECTION OF THE MLG AND NLG UPLOCK

NLG UPLOCK AND DOOR UPLOCK SPRINGS DO A DETAILED INSPECTION OF THE MLG AND
AND 326111−832−002−001

RE−INSPECT AT INTERVAL GIVEN IN THE PLANNING INFORMATION PARAGRAPH 1.E.(2).

D_SB_326111_5_FAAA_01_01 Figure A-FFAAA - Sheet 01 Flow Chart
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 22 5

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# @A300-600 SERVICE BULLETIN Appendix 01 : Inspection Report **CONF ALL The results of the inspection, including no findings, replacement or actions to be done, must be forwarded to airbus dept. SEEL3, on the attached inspection report.

DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A300-600 SERVICE BULLETIN Appendix 01 : Inspection Report

**CONF ALL **INSPECTION REPORT** SERVICE BULLETIN No. : A/C MSN : FLIGHT CYCLES : FLIGHT HOURS : A300−32−6111

DATE OF INSPECTION : RETURN TO : AIRBUS CUSTOMER SERVICES ENGINEERING − SEEL3 LANDING GEAR SYSTEMS A330/A340 & WIDE BODY

INSPECTION METHOD : 1 ROND POINT MAURICE BELLONTE 31707 BLAGNAC CEDEX FRANCE FAX +33 (0)5 61 36 14

QUESTIONS UPLOCKS SPRINGS BROKEN UPLOCK REPLACED OR DAMAGED
MLG UPLOCK YES NO YES NO

MLG DOOR UPLOCK YES NO YES NO

NLG UPLOCK YES NO YES NO

NLG DOOR UPLOCK YES NO YES NO WHICH SPRINGS ? (FREE FALL, HOOK, LEVER)

D_SB_326111_5_RAAA_01_02 Figure A-FRAAA - Sheet 01 Inspection Report
DATE: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 2 5

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# @A300-600 SERVICE BULLETIN REPORTING SHEET 

### TITLE: LANDING GEAR - NORMAL EXTENSION AND RETRACTION - INSPECTION OF UPLOCK SPRINGS 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: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A300-600 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: Jul 20/12 SERVICE BULLETIN No.: A300-32-6111 REVISION No.: 01 - Apr 25/13 Page: 1 5

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