@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 MANDATORY MANDATORY

ATA SYSTEM: 32

TITLE: LANDING GEAR - NORMAL EXTENSION AND RETRACTION -

INSPECTION OF NLG AND MLG SEQUENCE VALVES

**CONF ALL

MODIFICATIONS

None

REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES

In the scope of the Wide Body life extension exercise, Airbus has analyzed the in-service experience

feedback from Messier-Bugatti-Dowty who has reported five cases of early ruptures on levers of the

Nose Landing Gear (NLG) Sequence Valve.

Analysis of the root cause lead to consider that these fatigue ruptures were most probably due to initial

mis-rigging and not directly linked to ageing.

For the time being, even if the design of the Main Landing Gear (MLG) sequence valve lever is similar

with the one of NLG sequence valve lever, no case of lever rupture has been reported on MLG

sequence valve.

Incorrect adjustment of the mechanical linkages can cause rupture of the sequence valve lever and

subsequent potential inhibition of leg extension/retraction or interference between the Leg and Door

during operation.

This Service Bulletin details a one-time inspection of the control lever and correct adjustment of the

control rod between Doors and NLG and MLG Sequence valves (FIN 321255, 321262, 321214 and

321215).

Accomplishment of this Service Bulletin will contribute to ensure the reliability of the NLG and MLG

Sequence Valves.

GENERAL EVALUATION

EVALUATION TABLE

COMPLIANCE MANDATORY (1) CANCELS INSPECTION SB NO

POTENTIAL AD YES A/C OPERATION AFFECTED NO

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SUMMARY

EVALUATION TABLE

RELIABILITY AFFECTED NO PAX COMFORT AFFECTED NO

COST SAVING NO ETOPS AFFECTED NO

STRUCTURAL LIFE EXTN NO VENDOR SB INVOLVED NO

NORMAL JACKING YES

NOTE (1): Service Bulletin must be accomplished.

NOTE: Normal Jacking is required only if functional test is required.

MATERIAL PRICE INFORMATION

No Material

EFFECTIVITY

This Service Bulletin is applicable to this (these) operator(s) :

34Z 77T 83V AAL ABD AHK AIB BCS CES F2I FDX G8E GBG

IRA IRM JAL KAC KAL MNB MON MSR MXU OHY QTR RUN SUD

TAR THA TMA 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 NO

EQUIPMENT YES

HARD NO

SOFT NO

OBRM NO

MANPOWER

Task 326110-832-801-001: Inspection

TOTAL MANHOURS 9.50

ELAPSED TIME (HOURS) 5.00

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SERVICE BULLETIN

SUMMARY

APPENDICES

Appendix 01 - Elapsed Time Assumption

Appendix 02 - Inspection Report - NLG and MLG Sequence Valve

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SUMMARY

**CONF ALL

Z711

A

A

B

C

AREA TO BE INSPECTED

LH SIDE SHOWN

RH SIDE SYMMETRICAL

B C

LH

RH

321255

321262

PIN SHEARING INDICATING AREA

LEVER AREA

D_SB_326110_5_SAAA_01_03

Figure A-FSAAA - Sheet 01

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SERVICE BULLETIN

SUMMARY

**CONF ALL

Z741

Z731

C

LH SIDE SHOWN

RH SIDE SYMMETRICAL

A B

A

B

FWD

AREA TO BE INSPECTED

LH SIDE SHOWN

RH SIDE SYMMETRICAL

C

LH

RH

321214

321215

PIN SHEARING

INDICATING AREA

LEVER AREA

D_SB_326110_5_SBAA_01_03

Figure A-FSBAA - Sheet 01

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SUMMARY

This Page Intentionally Left Blank

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

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SERVICE BULLETIN

AIRBUS

CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC CEDEX

FRANCE

Tel : (33) 5 61 93 33 33

Telex : AIRBU 530526F

Fax : (33) 5 61 93 42 51

MANDATORY MANDATORY MANDATORY

ATA SYSTEM: 32

TITLE: LANDING GEAR - NORMAL EXTENSION AND RETRACTION -

INSPECTION OF NLG AND MLG SEQUENCE VALVES

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 0317 0321 0336 0344 0348 0351 0358 0361 0365 0380

0388 0401 0405 0408 0411 0414 0417 0423 0459-0466 0469-0470 0474 0477 0479

0505-0518 0521 0525 0529-0530 0532 0536 0540 0543 0546 0553-0561 0563 0566

0569 0572 0575 0577 0579 0581-0582 0584 0602-0615 0617-0618 0621 0623

0625-0633 0635 0637 0639 0641 0643 0645 0657 0659 0662 0664 0666 0668 0670

0673 0675 0677 0679 0681 0683 0685 0688 0692 0694 0696 0699 0701 0703 0705

0707 0709 0711 0713 0715 0717 0719 0721-0750 0752-0764 0766-0775 0777-0794

0797 0799-0841 0845-0878

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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

34Z 0685

77T 0838

83V 0423 0459 0460 0463 0466 0470 0474 0510 0511 0512 0615 0639

0675

AAL 0517 0612

ABD 0529 0557

AHK 0855 0856 0857 0858 0859 0860 0870 0871

AIB 0507 0508 0515

BCS 0621 0637 0641 0670 0679 0703 0711 0724 0729 0730 0737 0740

0753 0770

CES 0521 0525 0532 0707 0725 0732 0741 0746 0754 0763

F2I 0284 0294 0301 0307 0312 0317 0321 0336 0348 0351 0461 0518

0606 0610 0645

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 0469 0506 0509 0513 0514 0516

GBG 0626 0643

IRA 0632 0696 0723 0727

IRM 0380 0401 0405 0408 0411 0414 0546 0553 0608 0618 0623 0701

0750 0762 0773

JAL 0602 0617 0683 0783

KAC 0344 0673 0694 0699 0719 0721

KAL 0582 0609 0627 0631 0662 0692 0731

MNB 0734 0739 0755 0756 0758

MON 0540 0556 0604 0605

MSR 0561 0607

MXU 0767 0788 0797 0836 0837

OHY 0584 0603 0744 0747 0749 0764

QTR 0554 0560 0614

RUN 0677 0743

SUD 0666 0775

TAR 0505 0558 0563

THA 0464 0566 0569 0577 0628 0629 0635 0681 0705 0782 0784 0785

0786 0787

TMA 0872

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OPERATOR MSN

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

URS 0733

UZB 0717 0722

(4) Configuration by MSN

MSN CONFIGURATION

0284 0294 0301 0307 0312 0317 0321 0336 0344 0348 0351

0358 0361 0365 0380 0388 0401 0405 0408 0411 0414 0417

0423 0459 0460 0461 0462 0463 0464 0465 0466 0469 0470

0474 0477 0479 0505 0506 0507 0508 0509 0510 0511 0512

0513 0514 0515 0516 0517 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 0606 0607 0608 0609 0610 0611

0612 0613 0614 0615 0617 0618 0621 0623 0625 0626 0627

0628 0629 0630 0631 0632 0633 0635 0637 0639 0641 0643

0645 0657 0659 0662 0664 0666 0668 0670 0673 0675 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 0747 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

No Material Set

B. CONCURRENT REQUIREMENTS

None

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

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C. REASON

(1) History

In the scope of the Wide Body life extension exercise, Airbus has analyzed the inservice experience feedback from Messier-Bugatti-Dowty who has reported five cases of

early ruptures on levers of the Nose Landing Gear (NLG) Sequence Valve.

Analysis of the root cause lead to consider that these fatigue ruptures were most

probably due to initial mis-rigging and not directly linked to ageing.

For the time being, even if the design of the Main Landing Gear (MLG) sequence valve

lever is similar with the one of NLG sequence valve lever, no case of lever rupture has

been reported on MLG sequence valve.

Incorrect adjustment of the mechanical linkages can cause rupture of the sequence

valve lever and subsequent potential inhibition of leg extension/retraction or interference

between the Leg and Door during operation.

(2) Objective/Action

This Service Bulletin details a one-time inspection of the control lever and correct

adjustment of the control rod between Doors and NLG and MLG Sequence valves (FIN

321255, 321262, 321214 and 321215).

(3) Advantages

Accomplishment of this Service Bulletin will contribute to ensure the reliability of the NLG

and MLG Sequence Valves.

(4) Operational/Maintenance Consequences

None

D. DESCRIPTION

To accomplish this Service Bulletin it is necessary to :

Task 326110-832-801-001: Inspection

(1) Do a Detailed Inspection of the NLG Sequence Valve lever and the Pin shearing

indicating area

(2) Do a Detailed Inspection of the MLG Sequence Valve lever and the Pin shearing

indicating area

(3) Do a Detailed Inspection of the adjustment of the control rod between Door and NLG

Sequence Valve

(4) Do a Detailed Inspection of the adjustment of the control rod between Doors and

MLG Sequence Valve

(5) Adjust the control rod between Doors and the NLG Sequence Valve

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(6) Adjust the control rod between Doors and the MLG Sequence Valve

(7) Install a Serviceable NLG Sequence Valve and Lever

(8) Install a Serviceable MLG Sequence Valve and Lever

E. COMPLIANCE

(1) Classification

MANDATORY: Service Bulletin must be accomplished.

(2) Accomplishment Timescale

Table 1: Accomplishment Timescale Table

Condition Action Compliance time

Threshold (whichever

occurs first)

Grace period

(whichever occurs

first)

Repetitive

interval

All aircraft Apply SUBTASK

326110-832-001 001 Do a

Detailed Inspection of the NLG

Sequence Valve lever and the

Pin shearing indicating area

and

apply SUBTASK

326110-832-002 001 Do a

Detailed Inspection of the MLG

Sequence Valve lever and the

Pin shearing indicating area

At the next maintenance

opportunity after SB

receipt

4,000 FC/6,000

FH/30 months

None

Damage

found

Apply SUBTASK

326110-833-003 001 Install a

Serviceable NLG Sequence

Valve and Lever

and/or

apply SUBTASK

326110-833-004 001 Install a

Serviceable MLG Sequence

Valve and Lever

Before next flight None None

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Table 1: Accomplishment Timescale Table

Condition Action Compliance time

Threshold (whichever

occurs first)

Grace period

(whichever occurs

first)

Repetitive

interval

No

damage

found

Apply SUBTASK

326110-832-003 001 Do a

Detailed Inspection of the

adjustment of the control rod

between Door and NLG

Sequence Valve

and/or

apply SUBTASK

326110-832-004 001 Do a

Detailed Inspection of the

adjustment of the control rod

between Doors and MLG

Sequence Valve

Before next flight None None

Possible

to insert

the rigging

pin(s)

freely

No further action None None None

Not

possible to

insert the

rigging

pin(s)

freely

and

Possible

to insert a

pin of 7.1

mm (0,279

in)

See note

(*)

Apply SUBTASK

326110-833-005 001 Adjust

the control rod between Doors

and the NLG Sequence Valve

and/or

apply SUBTASK

326110-833-006 001 Adjust

the control rod between Doors

and the MLG Sequence Valve

Before next flight None None

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Table 1: Accomplishment Timescale Table

Condition Action Compliance time

Threshold (whichever

occurs first)

Grace period

(whichever occurs

first)

Repetitive

interval

Apply SUBTASK

326110-833-005 001 Adjust

the control rod between Doors

and the NLG Sequence Valve

Before next flight None

and/or

apply SUBTASK

326110-833-006 001 Adjust

the control rod between Doors

and the MLG Sequence Valve

and

Before next flight None

Apply SUBTASK

326110-833-003 001 Install a

Serviceable NLG Sequence

Valve and Lever

Before next flight 500 FC none

and/or

Not

possible to

insert the

rigging

pin(s)

freely

and

Not

possible to

insert a

pin of 7.1

mm (0,279

in)

See note

(*) apply SUBTASK

326110-833-004 001 Install a

Serviceable MLG Sequence

Valve and Lever

Before next flight 500 FC None

Note (*): This pin of 7.1 mm (0.279 in) diameter is valid only for hole 1 for NLG and MLG.

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.

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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 326110-832-801-001: Inspection

Get Access 1.00

On Aircraft

Do a Detailed Inspection of the NLG Sequence Valve

lever and the Pin shearing indicating area

0.25

Do a Detailed Inspection of the MLG Sequence Valve

lever and the Pin shearing indicating area

0.25

Do a Detailed Inspection of the adjustment of the

control rod between Door and NLG Sequence Valve

0.50

Do a Detailed Inspection of the adjustment of the

control rod between Doors and MLG Sequence Valve

0.50

Adjust the control rod between Doors and the NLG

Sequence Valve

1.00

Adjust the control rod between Doors and the MLG

Sequence Valve

1.00

Install a Serviceable NLG Sequence Valve and Lever 1.50

Install a Serviceable MLG Sequence Valve and Lever 1.50

Tests 1.00

Close-Up 1.00

TOTAL MANHOURS 9.50

ELAPSED TIME (HOURS) 5.00

NOTE: For details concerning the elapsed time assumption, refer to Appendix 01 -

Elapsed Time Assumption

H. WEIGHT AND BALANCE

Not Changed

I. ELECTRICAL LOAD DATA

Not Changed

J. REFERENCES

Aircraft Maintenance Manual (AMM) 06-21-00 12-12-29 24-00-00

29-10-00 29-14-00 32-12-11

32-22-11 32-31-00 32-31-18

32-31-37

Elec. Std. Practices Manual (ESPM) 20-55-00

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K. PUBLICATION AFFECTED

None

L. INTERCHANGEABILITY/MIXABILITY

Not Applicable

M. SPARES

None

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2. MATERIAL INFORMATION

**CONF ALL

A. MATERIAL - PRICE AND AVAILABILITY

(1) Procurement Addresses

Vendor parts are to be procured from:

Messier-Bugatti-Dowty

Sales and Administration Dpt.

Inovel Parc Sud

78142 Velizy Cedex

France

For ordering by fax (Commercial) : +33 (0)1 46 29 88

For ordering by fax (Technical Spec 2000):+33 (0)1 46 29 88

(2) Price and Availability

No AIRBUS kit will be provided.

Procurement terms for the equipment must be negotiated with the equipment supplier.

B. INDUSTRY SUPPORT INFORMATION

Industry support terms for the equipment must be negotiated with the equipment supplier.

C. LIST OF COMPONENTS

No Kit

D. LIST OF MATERIALS - OPERATOR SUPPLIED

None

E. PARTS TO BE RE-IDENTIFIED BY OPERATOR

None

F. TOOLING

(1) Tooling - Price and Availability

None

(2) Tools

NOTE: To accomplish the detailed inspection it is necessary to use the tools PN:

- Rigging Pin - Nose Gear Sequence Valve Control: 98A32301012000

- Rigging Pin - Main Gear Selector Control: 98A32301018000 and

98A32303002000

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- Pin of diameter 7.1 mm (0.279 in)

(3) Special Tools

None

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3. ACCOMPLISHMENT INSTRUCTIONS

Task 326110-832-801-001 - 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.

NOTE: The purpose of flow charts are for information only to show the various

Inspection/Repair phases described in this Service Bulletin.

Task Associated Data

Zone

711 731 741

Manpower

TOTAL MANHOURS 9.50

ELAPSED TIME (HOURS) 5.00

A. GENERAL

(1) Subtask 326110-910-001-001 - Standard Practices

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 06-21-00, Page Block 001

(a) For the identification of zones (Refer to AMM 06-21-00, Page Block 001).

(2) Subtask 326110-839-001-001 - Administrative

Manpower Resources

Skills NON SPECIFIC

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(a) Write in the applicable aircraft records that you have done all the work given in this

Service Bulletin.

B. PREPARATION

(1) Subtask 326110-941-001-001 - Job Set-up

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 24-00-00, Page Block 301

29-10-00, Page Block 301

29-14-00, Page Block 301

32-12-11, Page Block 301

32-22-11, Page Block 301

(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.

(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) Depressurize green hydraulic system (Refer to AMM 29-10-00, Page Block 301).

(f) Depressurize green hydraulic reservoir (Refer to AMM 29-14-00, Page Block 301).

C. PROCEDURE

(1) Subtask 326110-832-001-001 - Do a Detailed Inspection of the NLG Sequence Valve

lever and the Pin shearing indicating area

Work Zones and Access Panels

Zone Access/Work location

711

Manpower Resources

Manhours 0.25

Minimum number of person 1

Subtask elapsed time 0.25

Skills NON SPECIFIC

References

Fig. A-FBAAA

Inspection of the NLG Door Sequence

Valve

Sheet 01

Fig. A-FFAAA

Flow Chart

Sheet 01

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 14

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SERVICE BULLETIN

(a) At the threshold given in the Planning Information Paragraph E.(2):

Do a detailed inspection of the NLG sequence valve lever and the pin shearing

indicating area.

Refer to Fig. A-FBAAA Sheet 01 and Fig. A-FFAAA Sheet 01

1 If deformation, crack or damage is found:

- Apply SUBTASK 326110-833-003 001 Install a Serviceable NLG

Sequence Valve and Lever before next flight.

2 If no deformation, crack or damage is found:

- Apply SUBTASK 326110-832-003 001 Do a Detailed Inspection of the

adjustment of the control rod between Door and NLG Sequence Valve

before next flight.

(b) Send inspection report to AIRBUS, (Refer to Appendix 02 - Inspection Report -

NLG and MLG Sequence Valve ).

(2) Subtask 326110-832-002-001 - Do a Detailed Inspection of the MLG Sequence

Valve lever and the Pin shearing indicating area

Work Zones and Access Panels

Zone Access/Work location

731

741

Manpower Resources

Manhours 0.25

Minimum number of person 1

Subtask elapsed time 0.25

Skills NON SPECIFIC

References

Fig. A-FBBAA

Inspection of the MLG Door Sequence

Valve

Sheet 01

Fig. A-FFAAA

Flow Chart

Sheet 01

(a) At the threshold given in the Planning Information Paragraph E.(2):

Do a detailed inspection of the MLG sequence valve lever and the pin shearing

indicating area.

Refer to Fig. A-FBBAA Sheet 01 and Fig. A-FFAAA Sheet 01

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 15

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SERVICE BULLETIN

1 If deformation, crack or damage is found:

- Apply SUBTASK 326110-833-004 001 Install a Serviceable MLG

Sequence Valve and Lever before next flight.

2 If no deformation, crack or damage is found:

- Apply SUBTASK 326110-832-004 001 Do a Detailed Inspection of the

adjustment of the control rod between Doors and MLG Sequence Valve

before next flight.

(b) Send inspection report to AIRBUS, (Refer to Appendix 02 - Inspection Report -

NLG and MLG Sequence Valve ).

(3) Subtask 326110-832-003-001 - Do a Detailed Inspection of the adjustment of the

control rod between Door and NLG Sequence Valve

Work Zones and Access Panels

Zone Access/Work location

711

Manpower Resources

Manhours 0.50

Minimum number of person 1

Subtask elapsed time 0.50

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 32-31-18, Page Block 401

Fig. A-FBAAA

Inspection of the NLG Door Sequence

Valve

Sheet 01

(a) Check the correct adjustment of the control rod between doors and NLG sequence

valve by insertion of the rigging pin or the pin of diameter 7.1 mm (0.279 in) in

rigging hole 1.

Refer to Fig. A-FBAAA Sheet 01

1 If it is possible to insert freely the rigging pin 98A32301012000 in rigging hole

1:

- No further action.

2 If it is not possible to insert freely the rigging pin 98A32301012000 in rigging

hole 1 but possible to insert a pin of diameter 7.1 mm (0,279 in):

- Apply SUBTASK 326110-833-005 001 Adjust the control rod between

Doors and the NLG Sequence Valve before next flight.

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 16

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@A300-600

SERVICE BULLETIN

3 If it is not possible to insert freely the rigging pin 98A32301012000 in rigging

hole 1 and not possible to insert a pin of diameter 7.1 mm (0,279 in):

- Adjust the mechanical linkages before next flight, (Refer to SUBTASK

326110-833-005 001 Adjust the control rod between Doors and the NLG

Sequence Valve ).

and

- Apply SUBTASK 326110-833-003 001 Install a Serviceable NLG

Sequence Valve and Lever within the compliance time given in the

Planning Information Paragraph E.(2).

(b) Send inspection report to AIRBUS, (Refer to Appendix 02 - Inspection Report -

NLG and MLG Sequence Valve ).

(4) Subtask 326110-832-004-001 - Do a Detailed Inspection of the adjustment of the

control rod between Doors and MLG Sequence Valve

Work Zones and Access Panels

Zone Access/Work location

731

741

Manpower Resources

Manhours 0.50

Minimum number of person 1

Subtask elapsed time 0.50

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 32-31-37, Page Block 401

Fig. A-FBBAA

Inspection of the MLG Door Sequence

Valve

Sheet 01

(a) Check the correct adjustment of the control rod between doors and MLG sequence

valve by insertion of a rigging pin or pin of diameter 7.1 mm (0.279 in) in rigging

hole 1 and by installation of the rigging pin on the hole 2.

Refer to Fig. A-FBBAA Sheet 01

1 If it is possible to insert freely the rigging pins 98A32301018000 and

98A32303002000 in rigging holes 1 and 2:

- No further action.

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 17

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@A300-600

SERVICE BULLETIN

2 If it is not possible to insert freely the rigging pin 98A32301018000 in rigging

hole 1 but possible to insert a pin of diameter 7.1 mm (0,279 in) and possible

to insert freely the rigging pin 98A32303002000 in rigging hole 2:

- Apply SUBTASK 326110-833-006 001 Adjust the control rod between

Doors and the MLG Sequence Valve before next flight.

3 If it is not possible to insert freely the rigging pin 98A32301018000 in rigging

hole 1 and not possible to insert a pin of diameter 7.1 mm (0,279 in) or not

possible to insert freely the rigging pin 98A32303002000 in rigging hole 2:

- Adjust the mechanical linkages before next flight, (Refer to SUBTASK

326110-833-006 001 Adjust the control rod between Doors and the MLG

Sequence Valve ).

and

- Apply SUBTASK 326110-833-004 001 Install a Serviceable MLG

Sequence Valve and Lever within the compliance time given in the

Planning Information Paragraph E.(2).

(b) Send inspection report to AIRBUS, (Refer to Appendix 02 - Inspection Report -

NLG and MLG Sequence Valve ).

(5) Subtask 326110-833-005-001 - Adjust the control rod between Doors and the NLG

Sequence Valve

Work Zones and Access Panels

Zone Access/Work location

711

Manpower Resources

Manhours 1.00

Minimum number of person 1

Subtask elapsed time 1.00

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 32-31-18, Page Block 401

(a) Adjust the control rod between door and the NLG sequence valve, (Refer to AMM

32-31-18, Page Block 401).

NOTE: There is no need at this stage to do the test procedure described in

AMM 32-31-18, Page Block 401.

(6) Subtask 326110-833-006-001 - Adjust the control rod between Doors and the MLG

Sequence Valve

Work Zones and Access Panels

Zone Access/Work location

731

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 18

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@A300-600

SERVICE BULLETIN

741

Manpower Resources

Manhours 1.00

Minimum number of person 1

Subtask elapsed time 1.00

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 32-31-37, Page Block 401

(a) Adjust the control rod between doors and the MLG sequence valve, (Refer to AMM

32-31-37, Page Block 401).

NOTE: There is no need at this stage to do the test procedure described in

AMM 32-31-37, Page Block 401.

(7) Subtask 326110-833-003-001 - Install a Serviceable NLG Sequence Valve and Lever

Work Zones and Access Panels

Zone Access/Work location

711

Manpower Resources

Manhours 1.50

Minimum number of person 1

Subtask elapsed time 1.50

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 32-31-18, Page Block 401

(a) Remove the NLG sequence valve, (Refer to AMM 32-31-18, Page Block 401).

(b) Scrap the lever on the removed sequence valve and send the removed sequence

valve in shop.

(c) Install a serviceable NLG sequence valve (including lever), (Refer to AMM

32-31-18, Page Block 401).

(8) Subtask 326110-833-004-001 - Install a Serviceable MLG Sequence Valve and Lever

Work Zones and Access Panels

Zone Access/Work location

731

741

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 19

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@A300-600

SERVICE BULLETIN

Manpower Resources

Manhours 1.50

Minimum number of person 1

Subtask elapsed time 1.50

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 32-31-37, Page Block 401

(a) Remove the MLG sequence valve, (Refer to AMM 32-31-37, Page Block 401).

(b) Scrap the lever on the removed sequence valve and send the removed sequence

valve in shop.

(c) Install a serviceable MLG sequence valve (including lever), (Refer to AMM

32-31-37, Page Block 401).

D. TEST

(1) Subtask 326110-700-001-001 - Test

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 32-31-00, Page Block 501

(a) If only NLG sequence valve(s) have been replaced:

1 Do a Nose Gear Functional test Main Gear on ground (Refer to AMM

32-31-00, Page Block 501).

(b) If MLG sequence valve(s) have been replaced:

1 Do a gear Normal Extension and Retraction functional test (Refer to AMM

32-31-00, Page Block 501).

NOTE: Landing Gear tests are not required if adjustment only has

been performed.

E. CLOSE-UP

(1) Subtask 326110-942-001-001 - Close-up

Manpower Resources

Skills NON SPECIFIC

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 20

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@A300-600

SERVICE BULLETIN

References

Aircraft Maintenance Manual (AMM) 12-12-29, Page Block 001

29-10-00, Page Block 301

29-14-00, Page Block 301

32-12-11, Page Block 301

32-22-11, Page Block 301

(a) Pressurize green hydraulic system (Refer to AMM 29-10-00, Page Block 301).

(b) Pressurize green hydraulic reservoir (Refer to AMM 29-14-00, Page Block 301).

(c) Close the MLG doors (Refer to AMM 32-12-11, Page Block 301).

(d) Close the NLG doors (Refer to AMM 32-22-11, Page Block 301).

(e) Replenish hydraulic reservoirs as necessary if not already done in Test procedure

(Refer to AMM 12-12-29, Page Block 001).

(f) Remove access platforms.

(g) Restore the systems and the aircraft to normal operating condition.

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 21

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@A300-600

SERVICE BULLETIN

**CONF ALL

A

Z711

A B

C

NLG SEQUENCE VALVE

SEQUENCE VALVE LEVER

RIGGING PIN

P/N: 98A−3230−1012−000

OR

PIN OF 7.1 mm (0.279 in) DIAMETER

HOLE 1

LH SIDE SHOWN

B C

PIN SHEARING INDICATING AREA

D_SB_326110_5_BAAA_01_03

Figure A-FBAAA - Sheet 01

Inspection of the NLG Door Sequence Valve

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 22

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@A300-600

SERVICE BULLETIN

**CONF ALL

Z741

Z731

C

LH SIDE SHOWN

RH SIDE SYMMETRICAL

A B

A

B

FWD

RIGGING HOLE FOR RIGGING PIN 98A−3230−1018−000 OR

PIN OF 7.1 mm (0.279 in) DIAMETER

MLG SEQUENCE

VALVE

RIGGING HOLE

FOR RIGGING PIN

98A−3230−3002−000

PIN SHEARING

LH SIDE SHOWN

RH SIDE SYMMETRICAL

HOLE 1

HOLE 2

C

INDICATING AREA LEVER AREA

D_SB_326110_5_BBAA_01_03

Figure A-FBBAA - Sheet 01

Inspection of the MLG Door Sequence Valve

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 23

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@A300-600

SERVICE BULLETIN

**CONF ALL

QUESTION

ACTION

FINDING

AND THE PIN SHEARING INDICATING AREA

AT THRESHOLD GIVEN IN PLANNING INFORMATION PARAGRAPH E.(2).

YES

DO A DETAILED INSPECTION OF THE SEQUENCE VALVE LEVER

FINDING

DAMAGE

FREELY/EASILY THE

TO INSERT

POSSIBILITY

RIGGING PIN

REFER TO SUBTASK 326110−832−001−001 AND 326110−832−002−001

NO

MECHANICAL LINKAGES BETWEEN DOORS AND NLG (NOSE LANDING

DO A DETAILED INSPECTION OF THE ADJUSTMENT OF THE

GEAR) AND MLG (MAIN LANDING GEAR) SEQUENCE VALVES

REFER TO SUBTASK 326110−832−003−001 AND 326110−832−004−001

NO YES

NO FURTHER

ACTION

7.1 mm (0.279 in)

TO INSERT A PIN OF

POSSIBILITY

DIAMETER

NO YES

ADJUST THE MECHANICAL LINKAGES

REFER TO SUBTASK

326110−833−005−001 AND

NO FURTHER ACTION

326110−833−006−001

*

ADJUST THE MECHANICAL LINKAGES

REFER TO SUBTASK

326110−833−005−001 AND

326110−833−006−001

NOTE:

* THE PIN OF 7.1 mm (0.279 in) DIAMETER IS VALID ONLY FOR HOLE 1 FOR NLG AND MLG

NO FURTHER ACTION

AND

SEQUENCE VALVE

(INCLUDING LEVER)

INSTALL A SERVICEABLE

326110−833−003−001

AND/OR 326110−833−004−001

SEND THE INVOLVED

 SEQUENCE VALVE IN SHOP

(SCRAP THE LEVER)

REFER TO SUBTASKS

D_SB_326110_5_FAAA_01_05

Figure A-FFAAA - Sheet 01

Flow Chart

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 24

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@A300-600

SERVICE BULLETIN

Appendix 01 - Elapsed Time Assumption

**CONF ALL

(1) The following chart is only a proposal operators may determine that another way to do the work is

more suitable for them.

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 1

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@A300-600

SERVICE BULLETIN

Appendix 01 - Elapsed Time Assumption

**CONF ALL

ELAPSED TIME ASSUMPTION SERVICE BULLETIN No. A300−32−6110

SB ELAPSED TIME

(HOURS)

GET ACCESS

MH ET/S

TOTAL MANHOURS

SB ELAPSED TIME

10.00

5.00

STEPS

1.00 0.50

0 1 2 3 4 5

INSPECTION OF THE NLG SEQUENCE VALVE LEVER AREA AND THE PIN SHEARING AREA 0.25 0.25

INSPECTION OF THE MLG SEQUENCE VALVE LEVER AREA AND THE PIN SHEARING AREA 0.25 0.25

INSPECTION OF THE ADJUSTEMENT OF THE MECHANICAL LINKS BETWEEN DOORS 0.50 0.50

INSPECTION OF THE ADJUSTEMENT OF THE MECHANICAL LINKS BETWEEN DOORS 0.50 0.50

TEST 1.00 0.50

CLOSE−UP 1.00 0.50

MH

ET/S:

PER

MANHOURS

ELAPSED TIME PER STEP

NUMBER OF PERSONS

01

02

THIS CHART IS ONLY A PROPOSAL.

OPERATORS MAY DETERMINE THAT ANOTHER WAY

TO DO THE WORK IS MORE SUITABLE FOR THEM.

01

02

NOTES:

PER

2

1

1

1

1

2

2

ADJUST THE MECHANICAL LINKS BETWEEN DOORS AND THE INVOLVED 1.00 1.00 1

:

: IF A VSB IS INVOLVED, THE ASSOCIATED MANHOURS

ARE NOT REFLECTED IN THIS GANTT CHART.

AND NLG SEQUENCE VALVE

AND MLG SEQUENCE VALVE

NLG SEQQUENCE VALVES

ADJUST THE MECHANICAL LINKS BETWEEN DOORS AND THE INVOLVED 1.00 1.00 1

MLG SEQQUENCE VALVES

SEND THE INVOLVED NLG SEQUENCE VALVE 0.25 0.25 1

INSTALL A SERVICEABLE NLG SEQUENCE VALVE 1.50 1.50 1

SEND THE INVOLVED MLG SEQUENCE VALVE 0.25 0.25 1

INSTALL A SERVICEABLE MLG SEQUENCE VALVE 1.50 1.50 1

D_SB_326110_5_AAAA_01_00

Figure A-FAAAA - Sheet 01

Elapsed Time Assumption

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 2

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@A300-600

SERVICE BULLETIN

Appendix 02 - Inspection Report - NLG and MLG Sequence Valve

**CONF ALL

The results of the inspection, including no findings, replacement or action to be done, must be

forwarded to AIRBUS Department SEEL3, on the attached inspection report sheet.

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 1

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SERVICE BULLETIN

Appendix 02 - Inspection Report - NLG and MLG Sequence Valve

**CONF ALL

INSPECTION REPORT

SERVICE BULLETIN No. :

A/C MSN :

FLIGHT CYCLES :

FLIGHT HOURS :

A300−32−6110

DATE OF INSPECTION :

RETURN TO :

AIRBUS

CUSTOMER SERVICES ENGINEERING − SEEL3

LANDING GEAR SYSTEMS A330/A340 & WIDE BODY

INSPECTION METHOD : DETAILED INSPECTION

1 ROND POINT MAURICE BELLONTE

31707 BLAGNAC CEDEX

FRANCE

FAX +33 (0)5 61 93 32 73

DETAILED INSPECTION

DAMAGE FOUND

DETAILED INSPECTION

RIGGING PIN INSERTED

FREELY/EASILY

PIN OF 7.1 mm (0.279 in)

DIAMETER INSERTED

LH

RH

NLG SEQUENCE VALVE

DETAILED INSPECTION

DAMAGE FOUND

DETAILED INSPECTION

RIGGING PIN INSERTED

FREELY/EASILY

PIN OF 7.1 mm (0.279 in)

DIAMETER INSERTED

LH

RH

MLG SEQUENCE VALVE

D_SB_326110_5_RAAA_01_02

Figure A-FRAAA - Sheet 01

Inspection Report - NLG and MLG Sequence Valve

DATE: Jul 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 2

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SERVICE BULLETIN

REPORTING SHEET

TITLE: LANDING GEAR - NORMAL EXTENSION AND RETRACTION -

INSPECTION OF NLG AND MLG SEQUENCE VALVES

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 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 1

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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 17/12 SERVICE BULLETIN No.: A300-32-6110

REVISION No.: 00 - Jul 17/12 Page: 1

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