# @A310 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.A310-32-2147 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A310 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 2 5

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# @A310 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A310 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) :

18T 19U 52X 58X 82Z 83V 85W 85Z 99Y AFG AIB AIC BAF BBC C9L CFC DGA FDX G2X G8E GAF HFY HJI IRA IRM IYE JAV K1P KAC KZU MGL PCA PIA QAF R1T RJA ROT RZO SBI SGX SUD THY TSC UBD UZB WHT 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 322147-832-801-001: 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 2 5

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# @A310 SERVICE BULLETIN SUMMARY Task 322147-832-801-001: 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 3 5

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# @A310 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)

B_SB_322147_5_SAAA_01_09 Figure A-FSAAA - Sheet 01 Main Landing Gear Uplock
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 4 5

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# @A310 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

B_SB_322147_5_SCAA_01_00 Figure A-FSCAA - Sheet 01 Main Landing Gear Door Uplock
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 5 5

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# @A310 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

B_SB_322147_5_SBAA_01_02 Figure A-FSBAA - Sheet 01 Nose Landing Gear Uplock
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 6 5

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# @A310 SERVICE BULLETIN SUMMARY

**CONF ALL

− Z123 Z124

HOOK SPRING TO BE INSPECTED 

### A **A**

**A** 

## A

**A A** 

B_SB_322147_5_SDAA_01_00 Figure A-FSDAA - Sheet 01 Nose Landing Gear Door Uplock
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 7 5

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# @A310 SERVICE BULLETIN SUMMARY

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DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 8 5

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# @A310 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 310-203 310-204 310-221 310-222 310-304 310-308 310-322 310-324 310-325 (2) Effectivity by MSN 0162 0191 0201 0217 0224 0230 0233 0237 0241 0245 0248 0251 0254 0257 0260 0264 0267 0273 0278 0281 0283 0288 0297 0303 0313 0316 0318 0326 0331 0333 0335 0338-0339 0342-0343 0345-0346 0353 0355-0357 0359-0360 0362 0364 0367 0369-0370 0372 0375 0378-0379 0389-0390 0392 0394 0397 0399-0400 0406-0407 0410 0413 0418-0419 0421-0422 0425 0427-0429 0431 0434 0436-0437 0439 0441 0444-0449 0452 0454 0456-0458 0467 0472-0473 0475-0476 0478 0480-0485 0488-0492 0494-0500 0502-0503 0519-0520 0522-0524 0526-0527 0534 0537-0539 0541-0542 0544-0545 0547 0549-0552 0562 0564-0565 0567-0568 0571 0573-0574 0576 0585-0588 0590-0595 0597 0599-0600 0620 0622 0624 0636 0638 0644 0646-0649 0651-0654 0656 0658 0660-0661 0663 0667 0669 0671-0672 0674 0676 0678 0682 0684 0686-0687 0689 0691 0693 0697 0700 0702 0704 0706

DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A310 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 18T 0473 19U 0399 52X 0410 58X 0431 82Z 0550 0551 83V 0427 0428 85W 0684 0693 0697 85Z 0547 99Y 0489 AFG 0496 0497 AIB 0686 AIC 0392 0406 0407 0429 0538 0544 0654 0669 BAF 0367 0372 BBC 0594 0700 C9L 0652 CFC 0425 0441 0444 0446 0482 DGA 0418 0421 0422 FDX 0162 0191 0201 0217 0224 0230 0233 0237 0241 0245 0248 0251 0254 0257 0260 0264 0267 0273 0278 0281 0283 0288 0297 0303 0313 0316 0318 0326 0331 0333 0335 0339 0342 0343 0345 0346 0353 0355 0356 0359 0360 0362 0364 0369 0378 0394 0397 0400 0439 0449 0452 0454 0456 0457 0458 0467 0492 0500 0534 0539 0542 0549 0552 0593 0638 G2X 0573 G8E 0475 GAF 0434 0484 0498 0503 0522 0523 HFY 0495 0565 HJI 0413 IRA 0338 0370 0375 0379 0389 0390 0436 0671 IRM 0488 0499 0524 0537 0564 0567 0586 0595 0620 IYE 0568 0702 0704 JAV 0357 0481 K1P 0648 KAC 0647 0649 0663 KZU 0592 0622 0646 MGL 0526 PCA 0419 PIA 0585 0587 0590 0653 0656 0660 0676 0678 0682 0687 0689 0691 QAF 0667 R1T 0591
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 2 5

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# @A310 SERVICE BULLETIN

OPERATOR MSN RJA 0445 0490 0491 ROT 0636 0644 RZO 0571 0624 0651 0661 SBI 0520 SGX 0519 0562 SUD 0437 THY 0476 0478 0480 0502 TSC 0447 0472 0483 0485 0527 0541 0545 0588 0597 0599 0600 0658 UBD 0672 0674 UZB 0574 0576 0706 WHT 0448 0494 (4) Configuration by MSN MSN CONFIGURATION 0162 0191 0201 0217 0224 0230 0233 0237 0241 0245 0248 0251 0254 0257 0260 0264 0267 0273 0278 0281 0283 0288 0297 0303 0313 0316 0318 0326 0331 0333 0335 0338 0339 0342 0343 0345 0346 0353 0355 0356 0357 0359 0360 0362 0364 0367 0369 0370 0372 0375 0378 0379 0389 0390 0392 0394 0397 0399 0400 0406 0407 0410 0413 0418 0419 0421 0422 0425 0427 0428 0429 0431 0434 0436 0437 0439 0441 0444 0445 0446 0447 0448 0449 0452 0454 0456 0457 0458 0467 0472 0473 0475 0476 0478 0480 0481 0482 0483 0484 0485 0488 0489 0490 0491 0492 0494 0495 0496 0497 0498 0499 0500 0502 0503 0519 0520 0522 0523 0524 0526 0527 0534 0537 0538 0539 0541 0542 0544 0545 0547 0549 0550 0551 0552 0562 0564 0565 0567 0568 0571 0573 0574 0576 0585 0586 0587 0588 0590 0591 0592 0593 0594 0595 0597 0599 0600 0620 0622 0624 0636 0638 0644 0646 0647 0648 0649 0651 0652 0653 0654 0656 0658 0660 0661 0663 0667 0669 0671 0672 0674 0676 0678 0682 0684 0686 0687 0689 0691 0693 0697 0700 0702 0704 0706 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

DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 3 5

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# @A310 SERVICE BULLETIN
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. 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 322147-832-801-001: 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
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 4 5

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# @A310 SERVICE BULLETIN
E. COMPLIANCE (1) Classification MANDATORY: Service Bulletin must be accomplished. (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 322147-832-001 001 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 322147-833-001 001 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 322147-833-002 001 Replace the involved MLG uplock before the next flight 1,000 FC with inspection every 50 FC, refer to SUBTASK 322147-832-001-001 para. (1).(b) Repeat this inspection SB every 18 months Two free fall springs are broken or damaged on MLG uplock Apply SUBTASK 322147-833-002 001 Replace the involved MLG uplock before the next flight None Repeat this inspection SB every 18 months

DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 5 5

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# @A310 SERVICE BULLETIN

TABLE 1 : DETAILED INSPECTION OF MLG AND MLG DOOR UPLOCK SPRINGS COMPLIANCE TIME Condition Action THRESHOLD (whichever occurs first) GRACE PERIOD Repetitive Interval Hook and/or Lever springs are broken or damaged on MLG uplock Apply SUBTASK 322147-833-002 001 Replace the involved MLG uplock before the next flight 1,000 FC with inspection every 50 FC, refer to SUBTASK 322147-832-001-001 para. (1).(b) Repeat this inspection SB every 18 months

Table 1
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 322147-832-002 001 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 322147-833-003 001 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 322147-833-004 001 Replace the involved NLG uplock before the next flight 1,000 FC with inspection every 50 FC, refer to SUBTASK 322147-832-002-001 para. (2).(b) Repeat this inspection SB every 18 months

DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 6 5

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# @A310 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 Two free fall springs are broken or damaged on NLG uplock Apply SUBTASK 322147-833-004 001 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 322147-833-004 001 Replace the involved NLG uplock before the next flight 1,000 FC with inspection every 50 FC, refer to SUBTASK 322147-832-002-001 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. 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 322147-832-801-001: Inspection Get Access 2.00 On Aircraft Replace the involved MLG door uplock 1.00 Replace the involved MLG uplock 1.00
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 7 5

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# @A310 SERVICE BULLETIN
Task 322147-832-801-001: Inspection 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 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 8 5

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# @A310 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 9 5

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# @A310 SERVICE BULLETIN

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# @A310 SERVICE BULLETIN
3. ACCOMPLISHMENT INSTRUCTIONS Task 322147-832-801-001 - 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 322147-839-001-001 - 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 11 5

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# @A310 SERVICE BULLETIN
B. PREPARATION (1) Subtask 322147-941-001-001 - 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 322147-832-001-001 - 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 12 5

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# @A310 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 322147-833-001 001 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 322147-833-002 001 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 322147-832-002-001 - 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 13 5

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# @A310 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 322147-833-003 001 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 322147-833-004 001 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 14 5

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# @A310 SERVICE BULLETIN (3) Subtask 322147-833-001-001 - 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 322147-833-002-001 - 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 322147-833-003-001 - Replace the involved NLG door uplock Work Zones and Access Panels Zone Access/Work location 123 124 DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 15 5

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# @A310 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 322147-833-004-001 - 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 322147-700-001-001 - 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 16 5

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# @A310 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 322147-942-001-001 - 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 17 5

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# @A310 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)

B_SB_322147_5_BAAA_01_08 Figure A-FBAAA - Sheet 01 Area to be Inspected
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 18 5

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# @A310 SERVICE BULLETIN

**CONF ALL

HOOK SPRINGS TO BE INSPECTED LH SIDE SHOWN RH SIDE SYMMETRICAL 

### B

**B** 

## C

**B B** 
B_SB_322147_5_BAAA_02_01 Figure A-FBAAA - Sheet 02 Area to be Inspected
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 19 5

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# @A310 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

B_SB_322147_5_BBAA_01_01 Figure A-FBBAA - Sheet 01 Area to be Inspected
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 20 5

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# @A310 SERVICE BULLETIN

**CONF ALL

HOOK SPRING TO BE INSPECTED 

### B **B**



## B **B B** 

B_SB_322147_5_BBAA_02_02 Figure A-FBBAA - Sheet 02 Area to be Inspected
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 21 5

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# @A310 SERVICE BULLETIN

**CONF ALL

QUESTION ACTION FINDING YES OR DAMAGED SPRINGS BROKEN AS DESCRIBED IN SUBTASKS 322147−832−001−001

NO

SHOP FOR REPAIR AND REPLACE IT

SEND THE INVOLVED UPLOCK IN

AS DESCRIBED IN SUBTASK(S) 322147−833−001−001 AND/OR 322147−833−002−001 AND/OR 322147−833−003−001 AND/OR 322147−833−004−001 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 322147−832−002−001

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

B_SB_322147_5_FAAA_01_01 Figure A-FFAAA - Sheet 01 Flow Chart
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 22 5

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# @A310 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A310 SERVICE BULLETIN Appendix 01 : Inspection Report

**CONF ALL **INSPECTION REPORT** SERVICE BULLETIN No. : A/C MSN : FLIGHT CYCLES : FLIGHT HOURS : A310−32−2147

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 SPRING ? (FREE FALL, HOOK, LEVER)

B_SB_322147_5_RAAA_01_02 Figure A-FRAAA - Sheet 01 Inspection Report
DATE: Jul 20/12 SERVICE BULLETIN No.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 2 5

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# @A310 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 1 5

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# @A310 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.: A310-32-2147 REVISION No.: 01 - Apr 25/13 Page: 1 5

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