Service Bulletin No. A33/34-32-284 Page 1 of 12 CAGE: K0654 Cheltenham Road, Gloucester, GL2 9QH, England Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821 

# SERVICE BULLETIN Messier-Dowty Ltd



### © MESSIER-BUGATTI-DOWTY 2012 (AND SU BSEQUENT REVISION PAGE DATES) This document and all information contained herein is the sole property of Messier-Bugatti-Dowty. No intellectual property righ ts are granted by the delivery of this document or the disclosure of its content. This document shall not be reproduced to a third party without the express written consent of Messier-Bugatti-Dowty. Safran and Messier-Bugatti names are marks owned respectively bySafran and Messier-Bugatti-Dowty companies. The mark Dowty is used under licence. LANDING GEAR - MAIN LANDING GEAR - BOGI E AND DRESSINGS - INTRODUCTION OF A NEW BOGIE AND DRESSINGS WITH A NEW TWO COAT PAINT PROCEDURE 1. Planning Information A. Effectivity Aircraft affected: AIRBUS A330 and A340 Unit affected: Bogie and Dressings which includes: Bogie Assembly Part/Type Nos.: 201486003 and 201486004 (Bogie and Dressings) which includes: 201272004 (Bogie Assembly) OR 201486001 and 201486002 (Bogie and Dressings) which includes: 201485 Series (Bogie Assembly) OR 201274 Series (Bogie and Dressings) which includes: 201272 Series (Bogie Assembly) B. Concurrent Requirements (1) Messier-Dowty Limited tells operators that Service Bulletins A33-34/32-41, A33/34-32-175, A33/34-32-176, A33/34-32-193, A33/34-32-194 and A33/34-32-278 must be done before or at the same time you do this Service Bulletin. C. Reason (1) Fracture of a bogie beam has occured in-service due to corrosion in the bore. Investigation showed thin paint coats and paint deterioration. D. Description (1) Messier-Dowty Limited tells operators that a new bogie and dressings is introduced. The new bogie and dressings has: - a new two coat paint procedure applied - the bogie beam protective treatments chec ked for thickness after they are applied - a new protective treatment Ardrox AV100D applied to the bore of the bogie beam after paint

MAF1-0002-0149 May 11/2010 Jul 10/2012 (Revision 1)Service Bulletin No. A33/34-32-284 Page 2 

# SERVICE BULLETIN Messier-Dowty Ltd

- a new part number bogie beam, bogie beam subassembly and bogie beam, and axle. The new part numbers will show that the two coat paint procedure and Ardrox AV100D are applied and the protective treatments checked for thickness. (2) Messier-Dowty Limited recommend that yo u do this Service Bulletin on main landing gears on which: - the strike number 25 has not been cancelled on the bogie and dressings nameplate and looks like this . (3) Messier-Dowty Limited tells you that new m anufacture will include this Service Bulletin on main landing gears on which: - the strike number 25 has been cancel led on the bogie and dressings nameplate and looks like this - the part number of the new bogie and dressings starts 201486003-030. (4) Messier-Dowty Limited tells operators to re-identify, in-service, bogie beams that by records have had the correct protective treatments applied and checked at new manufacture. (a) Appendix A of this Service Bulletin has the serial numbers of the bogie beams which have had the correct protective treatments applied. NOTE: If you have a bogie beam which has a serial number shown in the table in Appendix A, you must re-identify the bogie beam, the bogie assembly and the bogie beam and axle subassembly: refer to Para 3.A. of this Service Bulletin. E. Compliance (1) Recommended (a) At next overhaul. (2) Refer to Airbus Service Bulletins A330-32-3237 and A340-32-4279. F. Approval (1) The technical content of this Service Bulletin has been approved under the authority of the EASA Design Organisation A pproval No. EASA.21J.031. G. Manpower (1) Messier-Dowty Limited make an estimate th at it will take approximately 3 man-hours to identify each bogie beam with a new part number: refer to Para 3.A. (2) Messier-Dowty Limited tells you no moreman hours are necessary when you do this Service Bulletin at overhaul or shop visit. NOTE: It is assumed that the equipment has been placed in a maintenance status. The man-hour estimates do not include preparation, close out or administrative functions. H. Weight and Balance (1) None. 25

25

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# SERVICE BULLETIN Messier-Dowty Ltd

I. References (1) Messier-Dowty Limited Component Maintenance Manual 32-12-01. (2) Messier-Dowty Limited Component Maintenance Manual 32-12-04. (3) Messier-Dowty Limited Component Maintenance Manual 32-12-05. (4) Messier-Dowty Limited Component Maintenance Manual 32-11-70. (5) Messier-Dowty Limited Component Maintenance Manual 32-11-94. (6) Messier-Dowty Limited Component Maintenance Manual 32-11-95. (7) Messier-Dowty Limited Component Maintenance Manual 32-11-74. (8) Messier-Dowty Limited Service Bulletin A33/34-32-278. (9) Messier-Dowty Limited Service Bulletin A33/34-32-194. (10) Messier-Dowty Limited Service Bulletin A33/34-32-193. (11) Messier-Dowty Limited Service Bulletin A33/34-32-176. (12) Messier-Dowty Limited Service Bulletin A33/34-32-175. (13) Messier-Dowty Limited Service Bulletin A33/34-32-41. (14) Messier-Dowty Limited Modifica tion Form No. MAF1-0002-0149, issue 3. (15) Messier-Dowty Standard Practices Manual 20-00-10. (16) Airbus Service Bulletin A330-32-3237 and A340-32-4279. (17) Airbus Modification No. 58896. (18) Airbus Airworthiness Limitation Section Part 1. (19) Aircraft Maintenance Manual. NOTE: This Service Bulletin is subject of aircraft modification No. 58896 and is covered by aircraft Service Bulletins A330-32-3237 and A340-32-4279. When you do this Service Bulletin the modified equipment can not be installed on the aircraft type unless the related aircraft modification and, if applicable, its aircraft Service Bulletin are approved. J. Other Publications Affected (1) Messier-Dowty Limited Component Maintenance Manual 32-12-01. (2) Messier-Dowty Limited Component Maintenance Manual 32-12-04. (3) Messier-Dowty Limited Component Maintenance Manual 32-12-05. (4) Messier-Dowty Limited Component Maintenance Manual 32-11-70. (5) Messier-Dowty Limited Component Maintenance Manual 32-11-94. (6) Messier-Dowty Limited Component Maintenance Manual 32-11-95. (7) Messier-Dowty Limited Component Maintenance Manual 32-11-74. 2. Material Information A. Material - Price and Availability

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# SERVICE BULLETIN Messier-Dowty Ltd

(1) The prices shown in this material sect ion are valid for the calendar year, ending December 31st 2012. Refer to the Messier-Dowty Spare Parts Price Catalog for subsequent year prices or contact your regional Messier-Dowty Technical Assistance and Spares Support Center (TASSC) for the la test price and availability information. B. Material Necessary For Each Unit The I/D codes below give information which help you to understand the instruction/disposition. I/D Code Instruction/information A New part B Part that can be obtained from the old one C Expendable part D Old part to be discarded E Part of new design valid for new manufacture F Part number change only Interchangeability codes (IC) given below show bas ic information to help you understand the interchangeability of parts. For full explanation of interchangeability codes, please refer to the latest edition of ATA specification 2000. IC Instruction/information 01 One-way interchangeable 02 Two-way interchangeable 03 Not interchangeable 04 Interchangeable as a set 05 Qualified Interchangeability The table that follows tells operators of the items that are necessary to do this Service Bulletin. It does not include tools or materials that are referred to in the Component Maintenance Manuals.

New Part No. Qty. Per Unit Keyword Old Part No. Instructions/ Disposition IC New Part Price ($US) 201486003-030 1 Bogie and Dressings which includes 201486003-025 (F) 01 -

201272004-020 1 .Bogie Assembly 201272004-015 (F) 01 - 201272248 1 ..Bogie Beam and Axle Subassembly which includes: 201272236 (F) 01 -

201272245 1 ...Bogie Beam Subassembly which includes: 201272235 (F) 01 -

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# SERVICE BULLETIN Messier-Dowty Ltd

C. Tooling (1) None. 3. Accomplishment Instructions The figure/item numbers in parentheses in the textagree with those that are in the illustrated parts list. Only the primary figure/item numbers are used. The Process Specifications (M-DLPS, M-DLNDT and PCS) are in the Standard Practices Manual. A. Procedure to re-identify the bogie beam with a new part number, that by records have had the correct protective treatments applied and checked at new manufacture (refer to the Aircraft Maintenance Manual, CMM 32-11-74 or CMM 32-12-05) (1) Refer to Appendix A. Check the table in Appendix A for the serial numbers of the bogie beams which, by records, have had the co rrect protective treatments applied and checked at new manufacture. If a bogie beam serial number is shown in the table in Appendix A: NOTE: If a bogie beam serial number is not shown in the table in Appendix A: refer to Para 3.B. (a) Make sure the aircraft is in a safe condition: refer to the Aircraft Maintenance Manual. (b) Remove the protective treatments from the bogie beam adjacent to the part number: refer to PCS-2700. (c) Identify the bogie beam (3-180) by chan ge of part number as follows: refer to PCS-6000-05. New Part Number Old Part Number 201272307 201272304 (d) Repair the protective treatment on top of the new part number: refer to PCS-2141 and PCS-2500. (e) Identify the bogie beam subassembly (3-20)by change of part number as follows: refer to PCS-6000-07. New Part Number Old Part Number 201272245 201272235 201272307 1 ....Bogie Beam 201272304 (B) 01 - NOTE: For IC code also refer to Airbus Service Bulletins A330-32-3237 and A340-32-4279. New Part No. Qty. Per Unit Keyword Old Part No. Instructions/ Disposition IC New Part Price ($US)

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# SERVICE BULLETIN Messier-Dowty Ltd

(f) Identify the bogie beam and axle subassembly (2-170, CMM 32-11-74) or (2-180, CMM 32-12-05) by change of part number as follows: refer to PCS-6000-07. New Part Number Old Part Number 201272248 201272236 (2) Continue at Para 3.C. Identification. B. Procedure at overhaul or the next shop vi sit (refer to CMM 32-11-74, CMM 32-12-05 and Figures 1 to 3 of this Service Bulletin). At the applicable step: NOTE: Make sure Service Bulletin A33/34-32-278 is completed before you continue with this Service Bulletin. (1) Check that you have the correct thicknes s of cadmium plate. Measure at each point (points 1 to 10), with a permascope, five times and take the average measurement: refer to Figures 1 to 3 for the measuring points. (a) The thickness of cadmium plate to be between 0,010 and 0,020 mm (0.0004 and 0.0008 in). NOTE: If the measurement is below that given above the bogie beam must be cadmium plated again: refer to REPAIR and PCS-2100. (2) Identify the bogie beam (3-180) by change of part number as follows: refer to PCS-6000-05. New Part Number Old Part Number 201272307 201272304 or 201272306 201272302 or 201272305 201272300 or 201485301 201485300 (3) Repair the protective treatment on top of the new part number: refer to PCS-2141 or PCS-2100. (4) Primer paint the bogie beam 201272307, 201272306, 201272305 or 201485301: refer to PCS-2500. (5) Check that you have the correct thicknes s of primer paint. Measure at each point (points 1 to 10), with a permascope, five times and take the average measurement: refer to Figures 1 to 3 for the measuring points. (a) The thickness of primer paint in the bore of the bogie beam (points 1 to 8) to be 0,040 to 0,050 mm (0.0016 to 0.0020 in) dry film thickness.

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# SERVICE BULLETIN Messier-Dowty Ltd

(b) The thickness of primer paint on the outside of the bogie beam (points 9 and 10) to be 0,020 to 0,025 mm (0.0008 to 0.0010 in) dry film thickness. NOTE: The thickness measurement of the primer paint must not include the cadmium plate thickness. The average thickness at Para 3.B.(1)(a) at points 1 to 10 must be subtracted from the thickness at Para 3.B.(5)(a) and (b). NOTE: If the measurement is below that given in Para 3.B.(5)(a) and (b) the bogie beam must be primer painted again: refer to REPAIR and PCS-2500. (6) Install the bushes in the bogie beam 201272307, 201272306, 201272305 or 201485301: refe r to ASSEMBLY. (7) Top coat paint the bogie beam subassem bly (3-20): refer to REPAIR, PCS-2500 and PCS-7204. (8) Check that you have the correct thickness of top coat paint. Measure at each point (points 1 to 10), with a permascope, fivetimes and take the average measurement: refer to Figures 1 to 3 for the measuring points. (a) The thickness of top coat paint to be 0,040 to 0,050 mm (0.0016 to 0.0020 in) dry film thickness NOTE: The thickness measurement of the top coat paint must not include the cadmium plate or primer paint thicknesses. The average thickness at Para 3.B.(1)(a) at points 1 to 10 plus the average thicknesses taken at Para 3.B.(5)(a) and (b) at points 1 to 10 must be subtracted from the thickness at Para 3.B.(8)(a). NOTE: If the measurement is below that given in Para 3.B.(8)(a), the bogie beam subassembly must be painted again: refer to REPAIR and PCS-2500. (9) Calculate the total thickness of protective treatments applied (ie: cadmium plate plus primer paint plus top coat paint). Measure the depth of protective treatments with a permascope to make sure the total depth is correct. (10) Apply Ardrox AV100D to the bore of the bogie beam subassembly (3-20): refer to PCS-2800. (11) Identify the bogie beam subassembly (3-20) by change of part number as follows: refer to PCS-6000-07. New Part Number Old Part Number 201272245 201272235 or 201272244 201272226 or 201272244 201272228 or 201272243 201272230 or 201485207 201485205

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# SERVICE BULLETIN Messier-Dowty Ltd

(12) Install the axles in the bogie b eam subassembly 201272245, 201272244, 201272243 or 201485207: refer to ASSEMBLY. (13) Identify the bogie beam and axle subassembly (2-170, CMM 32-11-74) or (2-180, CMM 32-12-05) by change of part number as follows: refer to PCS-6000-07. New Part Number Old Part Number 201272248 201272236
or 201272247 201272238
or New Part Number Old Part Number 201272247 201272239
or 201272246 201272240
or 201485208 201485206 (14) Continue with the assembly of the bogie assembly: refer to ASSEMBLY in the applicable CMM. C. Identification NOTE: When it is necessary to replace the identification nameplate identify the replacement nameplate with all the applicable data. (1) After you have done this Service Bulletin: - cancel the related strike number 25 on the bogie and dressings nameplate, refer to M-DLPS1006-5 and cancel like this - write the Service Bulletin number A33/34-32-284 in the applicable aircraft and landing gear records. 25

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# SERVICE BULLETIN Messier-Dowty Ltd

Bogie Beam - Measurement Points Figure 1 A340A5258-1 

## A A

80,00 to 90,00mm (3.150 to 3.543in) 75,00 to 85,00mm (2.953 to 3.346in)

80,00 to 90,00mm (3.150 to 3.543in) 75,00 to 85,00mm (2.953 to 3.346in) POINT 9

POINT 10

POINTS 9 AND 10 ARE EXTERNAL MEASUREMENT POINTS 

## B

100,00mm (3.937in)

POINT 2

POINT 4



## C POINT 3 POINT 1

POINT 5 POINT 6 DIM. A (SEE FIGURE 3)

100,00mm (3.937in)



## B POINT 8 POINT 7

SECTION 

## A-A POINTS 1 TO 8 ARE INTERNAL MEASUREMENT POINTS SEE SHEET 2

POINTS 1 TO 8 ARE INTERNAL MEASUREMENT POINTS DIM. A (SEE FIGURE 3)

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# SERVICE BULLETIN Messier-Dowty Ltd

Bogie Beam - Measurement Points Figure 2 A340A5240-1 SPOT FACES

PROBE DIAMETER 8,00 to 12,00mm (0.315 to 0.472in) TYPICAL ALL POINTS

SECTION 

## B-B W

POINT 1 POINT 2 DIAMETRICALLY OPPOSITE

POINT 3 POINT 4 DIAMETRICALLY OPPOSITE

POINT 5 POINT 6 DIAMETRICALLY OPPOSITE

POINT 7 POINT 8 DIAMETRICALLY OPPOSITE



## V Y SPOTFACES DETAIL

## C 11,00mm (0.433in)

POINTS 3 TO 6 RADIUS BLEND TANGENT POINT

SEE SHEET 1 TYPICAL POINTS 3 TO 6 INCLUSIVE

SEE SHEET 1 10,00mm (0.390in) DIA 

## X V-W

10,00mm (0.390in) DIA 

## Z V-W

10,00mm (0.390in) DIA 

## Z V-W

10,00mm (0.390in) DIA 

## Y V-W X

Z

POINTS 1 TO 8 ARE INTERNAL MEASUREMENT POINTS

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# SERVICE BULLETIN Messier-Dowty Ltd

Bogie Beam - Measurement Points (Part Numbers Pre-Service Bulletin A33/34-32-284) Figure 3 Bogie Beam

Part No. Bogie Beam Subassembly Part No. Dimension A (see Figure 1) 201272300 201272230 162,00 mm (6.379 in)

201272302 201272226
171,00 mm (6.732 in) 201272228 201485300 201485205 201272304 201272235

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# SERVICE BULLETIN Messier-Dowty Ltd

4. Messier-Dowty and Messier Services Contacts A. Refer to the Messier-Dowty website (safranmbd. com) for the latest list of contact names, addresses and numbers. Original Equipment Manufacturers Messier-Dowty Inc. 574 Monarch Avenue Ajax, Ontario L1S 2G8 CANADA Tel : 905-683-3100 Fax : 905-683-6936 Messier-Dowty Limited Cheltenham Road Gloucester GL2 9QH ENGLAND Tel : +44(0)1452 712424 Fax : +44(0)1452 713821 Messier-Bugatti-Dowty Landing Gear & Systems Integration Division Inovel Parc Sud BP10 78140 Velizy - Villacoublay FRANCE Tel : +33 146 29 18 00 Fax : +33 146 29 8770 Technical Assistance and Spares Support Centers (TASSC) For AOG (commercial and technical): aogtassc@safranmbd.com For Europe - Africa - Middle East customers: eametassc@safranmbd.com Tel: +33 1 5521 2590 For Americas customers: americatassc@safranmbd.com Tel: +1 404 305 2626 For Asia-Pacific customers: asiatassc@safranmbd.com Tel: +65 6245 5688 Repair and Overhaul Facilities Messier Services R&O Facility 574 Monarch Avenue Ajax, Ontario L1S 2G8 CANADA Tel : 905-683-3100 Fax : 905-683-0378 Messier Services R&O Facility Meteor Business Park Cheltenham Road Gloucester GL2 9QL ENGLAND Tel : +44(0)1452 713111 Fax : +44(0)1452 716500 Messier Services R&O Facility 3, rue Antoine de St Exupery, BP110 67124 Molsheim Cedex FRANCE Tel : (33) 38838 9200 Fax : (33) 38838 9399
Messier Services (Asia) Pte. Ltd. R&O Facility 21 Loyang Crescent, Loyang Industrial Estate SINGAPORE 508985 Tel : (65) 6545 9455 Fax : (65) 6542 3936 Messier Services R&O Facility - Americas Av. La Noria Parque Industrial Querétaro Carretera QRO-SLP, Km. 28.5 Querétaro, QRO 76220 MEXICO Tel : +52 (442) 19 25 800 Fax :+52 (442) 19 25 801 HYDREP Aéroport de Dinard-Pleurtuit-Saint-Malo Bâtiment 20 BP90154 35801 DINARD Cedex FRANCE Tel : (33) 2 99 82 79 79 Fax : (33) 2 99 82 79 97

Jul 10/2012 (Revision 1)Appendix A Service Bulletin No. A33/34-32-284 Page 1 of 2 CAGE: K0654 Cheltenham Road, Gloucester, GL2 9QH, England Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821 

# SERVICE BULLETIN Messier-Dowty Ltd



### © MESSIER-BUGATTI-DOWTY 2012 (AND SU BSEQUENT REVISION PAGE DATES) This document and all information contained herein is the sole property of Messier-Bugatti-Dowty. No intellectual property righ ts are granted by the delivery of this document or the disclosure of its content. This document shall not be reproduced to a third party without the express written consent of Messier-Bugatti-Dowty. Safran and Messier-Bugatti names are marks owned respectively bySafran and Messier-Bugatti-Dowty companies. The mark Dowty is used under licence. APPENDIX A LANDING GEAR - MAIN LANDING GEAR - BOGIE AND DRESSINGS - BOGIE BEAM - SERIAL NUMBER DATA 1. The tables that follow shows the serial numbers of the bogie beams 201272304 that have had the correct protective treatments applied and checked at new manufacture. Bogie Beam Serial No. Bogie Beam Serial No. Bogie Beam Serial No. Bogie Beam Serial No. 07MDG3420 07MDG9149 07MDG9417 07MDG10902 07MDG10903 07MDG15409 07MDG15410 07MDG15411 07MDG15412 07MDG15413 07MDG15414 07MDG16090 07MDG16091 07MDG16092 07MDG16093 07MDG16094 07MDG16095 07MDG18804 07MDG18805 07MDG18806 07MDG18807 07MDG18808 07MDG18809 08MDG1050 08MDG1052 08MDG1053 08MDG3104 08MDG3105 08MDG3976 08MDG3977 08MDG3979 08MDG3980 08MDG5506 08MDG5507 08MDG5509 08MDG5510 08MDG5940 08MDG5941 08MDG5942 08MDG5943 08MDG5944 08MDG5945 08MDG11550 08MDG11551 08MDG11553 08MDG11554 08MDG11555 08MDG11556 08MDG11558 08MDG11718 08MDG11719 08MDG11720 08MDG11721 08MDG11722 08MDG11723 08MDG11724 08MDG11880 08MDG11887 08MDG12345 08MDG12347 - - - 08MDG5511 08MDG12348 08MDG12343 SER12335/05 08MDG5508 - - -

Jul 10/2012 (Revision 1)INTENTIONALLY BLANK

Appendix A Service Bulletin No. A33/34-32-284 Page 2 

# SERVICE BULLETIN Messier-Dowty LtdCAGE: K0654 Cheltenham Road, Gloucester, GL2 9QH, England Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821 

# SERVICE BULLETIN Messier-Dowty Ltd



### © MESSIER-BUGATTI-DOWTY 2012 (AND SU BSEQUENT REVISION PAGE DATES) This document and all information contained herein is the sole property of Messier-Bugatti-Dowty. No intellectual property righ ts are granted by the delivery of this document or the disclosure of its content. This document shall not be reproduced to a third party without the express written consent of Messier-Bugatti-Dowty. Safran and Messier-Bugatti names are marks owned respectively bySafran and Messier-Bugatti-Dowty companies. The mark Dowty is used under licence. AIRBUS A330/A340 MAIN LANDING GEAR SERVICE BULLETIN A33/34-32-284 TRANSMITTAL LETTER FOR REVISION 1 DATE JUL 10/2012
1. REASON A. To update Manpower hours. B. To update serial numbers in Appendix A.
2. ACTION A. Remove and destroy existing pages 1 to 10 and substitute revised pages 1 to 10 dated Jul 10/2012. B. Appendix A. Remove and destroy existi ng pages 1 to 2 and substitute revised pages 1 to 2 dated Jul 10/2012.
3. PREVIOUS REVISION/ISSUE DETAILS Revision Status Date A. Initial Issue May 11/2010

# SERVICE BULLETIN Messier-Dowty Ltd