Messier-Dowty Ltd

Service Letter No. A33-34 A20

Page 1 of 2

CAGE: K0654

Cheltenham Road, Gloucester, GL2 9QH, England

Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821

SERVICE LETTER

ATTENTION: AIRBUS AIRCRAFT OPERATORS AND REPAIR STATIONS

AIRCRAFT: AIRBUS A330-200/300, A340-200/300 AND A340-500/600

UNITS: MESSIER-DOWTY MAIN LANDING GEARS AND CENTER LANDING 

GEARS

SUBJECT: MATERIAL PROPERTIES OUTSIDE OF SPECIFICATION REQUIREMENTS

1. REASON

A. Messier-Dowty has found that production quality coupon testing has shown below

specification material properties.

B. This Service Letter tells operators that there will be a flight hour and/or landing and/or

calendar life limitation reduction on main fittings, bogie beams and sliding pistons which are

identified in the Airbus Airworthiness Limitation Section (ALS Part 1) and this Service Letter.

C. This fatigue life limitation reduction applies because of a potential problem in the raw

material of the main fittings, bogie beams and sliding pistons.

2. GENERAL

A. Messier-Dowty tells you that on going investigations and additional fatigue testing should

improve the reduced life limits of the main fittings, bogie beams and sliding pistons

referenced in this Service Letter.

3. PROCEDURE

A. Messier-Dowty tells you that if you have a main landing gear main fitting part number/serial

number which appears in Appendix A Table 1 or 2: 

(1) in Section 1 the reduced life limitation for the part number/serial number will be in the

ALS Part 1.

(2) in Section 2 the part number/serial number are no longer part of the suspect population:

refer to ALS Part 1 for the normal life limitation.

NOTE : If the main landing gear main fitting part number/serial number does not

appear in Appendix A, refer to ALS Part 1 for the normal life limitation.

B. Messier-Dowty tells you that if you have a main landing gear bogie beam part number/serial

number which appears in Appendix B: 

(1) in Section 1 the reduced life limitation for the part number/serial number will be in the

ALS Part 1.

(2) in Section 2 the part number/serial number are no longer part of the suspect population:

refer to ALS Part 1 for the normal life limitation.

NOTE : If the main landing gear bogie beam part number/serial number does not

appear in Appendix B, refer to ALS Part 1 for the normal life limitation.

Mar 13/2007

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Service Letter No. A33-34 A20

Page 2

SERVICE LETTER

C. Messier-Dowty tells you that if you have a center landing gear main fitting part number/serial

number which appears in Appendix C:

(1) in Section 1 the reduced life limitation for the part number/serial number will be in the

ALS Part 1

(2) in Section 2 the part number/serial number are no longer part of the suspect population,

refer to ALS Part 1 for the normal life limitation.

NOTE : If the center landing gear main fitting part number/serial number does not

appear in Appendix C, refer to ALS Part 1 for the normal life limitation.

D. Messier-Dowty tells you that if you have a main landing gear sliding piston part number/serial

number which appears in Appendix D:

(1) in Section 1 the reduced life limitation for the part number/serial number will be in the

ALS Part 1.

NOTE : If the main landing gear sliding piston part number/serial number does not

appear in Appendix D, refer to ALS Part 1 for the normal life limitation.

E. Messier-Dowty Ltd tells you that if you have to replace a part listed in this Service Letter you

must order the new part and also the associated consumable material part number. Refer to

Appendix E for the detail of part numbers to be ordered.

F. Messier-Dowty Ltd tells you that Appendix F of this Service Letter provides a pro-forma

which must be used to record the removal and mutilation of unserviceable parts.

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 1 of 10

CAGE: K0654

Cheltenham Road, Gloucester, GL2 9QH, England

Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821

SERVICE LETTER

APPENDIX A

AFFECTED SERIAL NUMBERS FOR MAIN LANDING GEAR MAIN FITTING LH PART NUMBERS 

201488324, 201488335, 50-1209001-03 AND 50-2107001-00

TABLE 1

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Section 1: The list of serial numbers of parts that are SUSPECTED to be affected by the 

material specification, including:

- parts with no concession (or for spare parts: not identified in a EASA form 1

or in a FAA Form 8130-3)

- parts for which a defect has been documented.

06MDM00069 (S1) 06MDM00123 (S1) 06MDM00261 (S1) 06MDM00845 (S3)

06MDM00073 (S1) 06MDM00125 (S3) 06MDM00265 (S1) 06MDM00847 (S1)

06MDM00075 (S1) 06MDM00129 (S1)* 06MDM00267 (S3) 06MDM00849 (S1)

06MDM00077 (S1) 06MDM00133 (S1) 06MDM00269 (S3) 06MDM00851 (S1)

06MDM00087 (S1) 06MDM00151 (S1) 06MDM00271 (S1) 06MDM00853 (S1)

06MDM00093 (S1) 06MDM00161 (S1) 06MDM00289 (S3) 06MDM00855 (S1)

06MDM00095 (S3) 06MDM00167 (S3) 06MDM00291 (S3) 06MDM00859 (S3)

06MDM00097 (S3) 06MDM00169 (S3) 06MDM00293 (S3) 06MDM00861 (S3)

06MDM00099 (S3) 06MDM00171 (S3) 06MDM00821 (S1) 06MDM00869 (S1)

06MDM00101 (S3) 06MDM00191 (S3) 06MDM00827 (S1) 06MDM00871 (S3)

06MDM00103 (S3) 06MDM00193 (S3) 06MDM00829 (S1) 07MDM00217 (S3)

06MDM00107 (S1) 06MDM00195 (S3) 06MDM00831 (S3) MDMCAA0141M (S3)

06MDM00111 (S3) 06MDM00197 (S3) 06MDM00833 (S3) MDMCAA0153M (S3)

06MDM00113 (S1) 06MDM00199 (S3) 06MDM00835 (S3) MDMCAA0159M (S3)

06MDM00115 (S3) 06MDM00249 (S1) 06MDM00837 (S1) MDMCAA0163M (S3)

06MDM00117 (S3) 06MDM00251 (S1) 06MDM00839 (S1) MDMCAA0165M (S3)

06MDM00119 (S1) 06MDM00255 (S1) 06MDM00841 (S1) MDMCAA0187M (S3)

06MDM00121 (S1) 06MDM00259 (S1) 06MDM00843 (S3) MDMCAA0191M (S3)

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 2

SERVICE LETTER

MDMCAA0195M (S3) MDMCAC0425M (S3) MDMCAC0485M (S3) MDMCAC0773M (S1)

MDMCAA0197M (S3) MDMCAC0427M (S3) MDMCAC0497M (S3) MDMCAC0783M (S1)

MDMCAA0229M (S1) MDMCAC0429M (S3) MDMCAC0517M (S3) MDMCAC0793M (S1)

MDMCAC0315M (S3) MDMCAC0431M (S3) MDMCAC0521M (S3) MDMCAC0805M (S1)

MDMCAC0321M (S3) MDMCAC0433M (S3) MDMCAC0523M (S3) MDMCAC0813M (S2C)

MDMCAC0361M (S3) MDMCAC0447M (S3) MDMCAC0547M (S3) MDMCAC0815M (S1)

MDMCAC0365M (S3) MDMCAC0461M (S3) MDMCAC0621M (S3) MDMCAC0817M (S1)

MDMCAC0369M (S3) MDMCAC0463M (S3) MDMCAC0629M (S3) MDMCAI0017M (S1)

MDMCAC0371M (S3) MDMCAC0465M (S3) MDMCAC0631M (S3) MDMCAI0023M (S1)

MDMCAC0373M (S3) MDMCAC0467M (S3) MDMCAC0639M (S3) MDMCAI0027M (S1)

MDMCAC0375M (S3) MDMCAC0471M (S3) MDMCAC0643M (S3) MDMCAI0031M (S1)

MDMCAC0383M (S3) MDMCAC0473M (S3) MDMCAC0683M (S3) MDMCAI0039M (S1)

MDMCAC0385M (S3) MDMCAC0475M (S3) MDMCAC0719M (S3) MDMCAI0041M (S1)

MDMCAC0391M (S3) MDMCAC0477M (S3) MDMCAC0753M (S3) MDMCAI0043M (S1)

MDMCAC0409M (S3) MDMCAC0481M (S3) MDMCAC0759M (S1) MDMCAI0049M (S1)

MDMCAC0421M (S3) MDMCAC0483M (S3) MDMCAC0767M (S1) MDMCAI0051M (S1)

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 3

SERVICE LETTER

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Section 2: The list of serial numbers of parts that are NO LONGER SUSPECTED to be 

affected by the material specification, including:

- parts delivered with a concession (or for spare parts: identified either in a

EASA form 1 or in a FAA Form 8130-3)

- parts previously listed in the SL A20.

06MDM00063 06MDM00159 06MDM00279 07MDM00245

06MDM00065 06MDM00163 06MDM00281 07MDM00247

06MDM00067 06MDM00165 06MDM00285 07MDM00249

06MDM00071 06MDM00173 06MDM00287 07MDM00251

06MDM00079 06MDM00175 06MDM00823 07MDM00253

06MDM00081 06MDM00177 06MDM00825 07MDM00255

06MDM00083 06MDM00179 06MDM00857 07MDM00257

06MDM00085 06MDM00181 06MDM00863 07MDM00259

06MDM00089 06MDM00183 06MDM00865 07MDM00261

06MDM00091 06MDM00185 06MDM00867 07MDM00299

06MDM00105 06MDM00187 06MDM00879 07MDM00883

06MDM00127 06MDM00189 07MDM00215 07MDM00891

06MDM00131 06MDM00201 07MDM00219 MDMCAA0193M

06MDM00135 06MDM00203 07MDM00221 MDMCAA0199M

06MDM00137 06MDM00207 07MDM00223 MDMCAA0201M

06MDM00139 06MDM00209 07MDM00225 MDMCAA0203M

06MDM00141 06MDM00211 07MDM00227 MDMCAA0205M

06MDM00143 06MDM00213 07MDM00231 MDMCAA0207M

06MDM00145 06MDM00247 07MDM00233 MDMCAA0209M

06MDM00147 06MDM00257 07MDM00235 MDMCAA0211M

06MDM00149 06MDM00263 07MDM00237 MDMCAA0213M

06MDM00153 06MDM00273 07MDM00239 MDMCAA0215M

06MDM00155 06MDM00275 07MDM00241 MDMCAA0217M

06MDM00157 06MDM00277 07MDM00243 MDMCAA0219M

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 4

SERVICE LETTER

NOTE : Please refer to OIT SE 999.0012/07/LB Rev. 04 dated 05 May 08 and TFU Ref:

32.00.00.012, for information regarding (S1), (S2C) and (S3) in the above Table 1,

Section 1.

NOTE : If Messier-Dowty Limited Service Bulletin A33/34-32-257 has been done to the

main fitting part number 201488324, the new main fitting part number will be

201488335, while keeping the same serial number.

NOTE : * Production part listed as quarantine or WIP - to be scrapped.

MDMCAA0221M MDMCAC0695M MDMCAC0741M MDMCAC0799M

MDMCAA0223M MDMCAC0697M MDMCAC0743M MDMCAC0801M

MDMCAA0225M MDMCAC0699M MDMCAC0745M MDMCAC0803M

MDMCAA0227M MDMCAC0701M MDMCAC0747M MDMCAC0807M

MDMCAA0231M MDMCAC0703M MDMCAC0749M MDMCAC0809M

MDMCAA0233M MDMCAC0705M MDMCAC0751M MDMCAC0811M

MDMCAA0235M MDMCAC0707M MDMCAC0755M MDMCAC0819M

MDMCAA0237M MDMCAC0709M MDMCAC0757M MDMCAI0015M

MDMCAA0239M MDMCAC0711M MDMCAC0761M MDMCAI0021M

MDMCAA0241M MDMCAC0713M MDMCAC0763M MDMCAI0025M

MDMCAA0245M MDMCAC0715M MDMCAC0765M MDMCAl0029M

MDMCAC0615M MDMCAC0717M MDMCAC0769M MDMCAI0033M

MDMCAC0673M MDMCAC0721M MDMCAC0771M MDMCAI0035M

MDMCAC0675M MDMCAC0723M MDMCAC0775M MDMCAI0037M

MDMCAC0677M MDMCAC0725M MDMCAC0777M MDMCAl0045M

MDMCAC0679M MDMCAC0727M MDMCAC0781M MDMCAl0047M

MDMCAC0681M MDMCAC0729M MDMCAC0785M MDMCAl0053M

MDMCAC0685M MDMCAC0731M MDMCAC0787M MDMCAl0055M

MDMCAC0687M MDMCAC0733M MDMCAC0789M MDMCAI0057M

MDMCAC0689M MDMCAC0735M MDMCAC0791M MDMCAI0059M

MDMCAC0691M MDMCAC0737M MDMCAC0795M MDMCAI0061M

MDMCAC0693M MDMCAC0739M MDMCAC0797M -

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Main Fitting LH

Serial Number:

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 5

SERVICE LETTER

AFFECTED SERIAL NUMBERS FOR MAIN LANDING GEAR MAIN FITTING RH PART NUMBERS 

201488325, 201488336, 50-1210001-03 AND 50-2108001-00

TABLE 2

Main Fitting RH

Serial Number:

Main Fitting RH

Serial Number

Main Fitting RH

Serial Number

Main Fitting RH

Serial Number

Section 1: The list of serial numbers of parts that are SUSPECTED to be affected by the 

material specification, including:

- parts with no concession (or for spare parts: not identified in a EASA form 1

or in a FAA Form 8130-3)

- parts for which a defect has been documented.

06MDM00044 (S1) 06MDM00190 (S3) 07MDM00210 (S3) MDMCAC0420M (S3)

06MDM00046 (S1) 06MDM00192 (S3) 07MDM00216 (S3) MDMCAC0422M (S3)

06MDM00048 (S1) 06MDM00204 (S3) 07MDM00218 (S3) MDMCAC0424M (S3)

06MDM00050 (S1) 06MDM00234 (S1) 07MDM00280 (S3) MDMCAC0426M (S3)

06MDM00054 (S1) 06MDM00236 (S1) MDMCAA0114M (S3) MDMCAC0428M (S3)

06MDM00062 (S1) 06MDM00240 (S1) MDMCAA0130M (S3) MDMCAC0430M (S3)

06MDM00064 (S1) 06MDM00246 (S1) MDMCAA0132M (S3) MDMCAC0432M (S3)

06MDM00068 (S1) 06MDM00254 (S1) MDMCAA0138M (S3) MDMCAC0438M (S3)

06MDM00072 (S1) 06MDM00264 (S1) MDMCAA0140M (S3) MDMCAC0440M (S3)

06MDM00078 (S1) 06MDM00266 (S1) MDMCAA0152M (S3) MDMCAC0450M (S3)

06MDM00080 (S1) 06MDM00810 (S1) MDMCAA0154M (S3) MDMCAC0472M (S3)

06MDM00082 (S1) 06MDM00812 (S1) MDMCAA0176M (S3) MDMCAC0484M (S3)

06MDM00088 (S1) 06MDM00818 (S1) MDMCAA0218M (S1) MDMCAC0490M (S3)

06MDM00094 (S1) 06MDM00822 (S1) MDMCAA0224M (S1) MDMCAC0494M (S3)

06MDM00112 (S1) 06MDM00824 (S1) MDMCAA0226M (S1) MDMCAC0516M (S3)

06MDM00114 (S1)* 06MDM00826 (S1) MDMCAC0352M (S3) MDMCAC0568M (S3)

06MDM00126 (S1) 06MDM00830 (S1) MDMCAC0364M (S3) MDMCAC0574M (S3)

06MDM00138 (S1) 06MDM00832 (S1) MDMCAC0366M (S3) MDMCAC0586M (S3)

06MDM00140 (S1) 06MDM00840 (S1) MDMCAC0372M (S3) MDMCAC0604M (S3)

06MDM00146 (S1) 06MDM00860 (S1) MDMCAC0410M (S3) MDMCAC0610M (S3)

06MDM00188 (S3) 07MDM00208 (S3) MDMCAC0418M (S3) MDMCAC0702M (S3)

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 6

SERVICE LETTER

MDMCAC0740M (S1) MDMCAC0752M (S1) MDMCAC0788M (S1) MDMCAI0014M (S1)

MDMCAC0744M (S1) MDMCAC0754M (S1) MDMCAC0790M(S2C) MDMCAI0020M (S1)

MDMCAC0746M (S1) MDMCAC0758M (S1) MDMCAI0008M (S1) MDMCAI0028M (S1)

MDMCAC0750M (S1) MDMCAC0784M (S1) MDMCAI0010M (S1) -

Main Fitting RH

Serial Number:

Main Fitting RH

Serial Number

Main Fitting RH

Serial Number

Main Fitting RH

Serial Number

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 7

SERVICE LETTER .

Main Fitting RH

Serial Number:

Main Fitting RH

Serial Number

Main Fitting RH

Serial Number

Main Fitting RH

Serial Number

Section 2: The list of serial numbers of parts that are NO LONGER SUSPECTED to be 

affected by the material specification, including:

- parts delivered with a concession (or for spare parts: identified either in a

EASA form 1 or in a FAA Form 8130-3)

- parts previously listed in the SL A20.

06MDM00042 06MDM00130 06MDM00194 06MDM00834

06MDM00052 06MDM00132 06MDM00198 06MDM00836

06MDM00056 06MDM00136 06MDM00200 06MDM00838

06MDM00058 06MDM00142 06MDM00202 06MDM00842

06MDM00060 06MDM00144 06MDM00232 06MDM00848

06MDM00066 06MDM00148 06MDM00238 06MDM00850

06MDM00074 06MDM00150 06MDM00242 06MDM00852

06MDM00076 06MDM00152 06MDM00244 06MDM00856

06MDM00084 06MDM00154 06MDM00248 06MDM00858

06MDM00086 06MDM00156 06MDM00250 06MDM00862

06MDM00090 06MDM00158 06MDM00252 06MDM00870

06MDM00092 06MDM00160 06MDM00256 06MDM00872

06MDM00096 06MDM00162 06MDM00258 06MDM00874

06MDM00098 06MDM00164 06MDM00262 07MDM00206

06MDM00100 06MDM00166 06MDM00268 07MDM00220

06MDM00102 06MDM00168 06MDM00272 07MDM00222

06MDM00104 06MDM00170 06MDM00274 07MDM00224

06MDM00108 06MDM00172 06MDM00278 07MDM00226

06MDM00110 06MDM00174 06MDM00804 07MDM00228

06MDM00116 06MDM00176 06MDM00806 07MDM00230

06MDM00118 06MDM00178 06MDM00808 07MDM00232

06MDM00120 06MDM00180 06MDM00814 07MDM00234

06MDM00122 06MDM00182 06MDM00816 07MDM00238

06MDM00124 06MDM00184 06MDM00820 07MDM00240

06MDM00128 06MDM00186 06MDM00828 07MDM00242

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 8

SERVICE LETTER

07MDM00244 MDMCAA0212M MDMCAC0696M MDMCAC0772M

07MDM00246 MDMCAA0214M MDMCAC0698M MDMCAC0774M

07MDM00248 MDMCAA0216M MDMCAC0700M MDMCAC0776M

07MDM00252 MDMCAA0220M MDMCAC0704M MDMCAC0778M

07MDM00254 MDMCAA0222M MDMCAC0706M MDMCAC0780M

07MDM00256 MDMCAA0228M MDMCAC0708M MDMCAC0782M

07MDM00260 MDMCAC0492M MDMCAC0710M MDMCAC0786M

07MDM00262 MDMCAC0650M MDMCAC0712M MDMCAC0792M

07MDM00264 MDMCAC0654M MDMCAC0714M MDMCAC0794M

07MDM00266 MDMCAC0656M MDMCAC0716M MDMCAC0796M

07MDM00284 MDMCAC0658M MDMCAC0718M MDMCAC0798M

07MDM00870 MDMCAC0660M MDMCAC0720M MDMCAC0800M

07MDM00872 MDMCAC0662M MDMCAC0722M MDMCAC0802M

07MDM00874 MDMCAC0664M MDMCAC0724M MDMCAI0006M

07MDM00876 MDMCAC0666M MDMCAC0726M MDMCAl0012M

MDMCAA0166M MDMCAC0668M MDMCAC0728M MDMCAl0016M

MDMCAA0186M MDMCAC0670M MDMCAC0730M MDMCAI0018M

MDMCAA0188M MDMCAC0672M MDMCAC0732M MDMCAI0022M

MDMCAA0190M MDMCAC0674M MDMCAC0734M MDMCAl0024M

MDMCAA0192M MDMCAC0676M MDMCAC0736M MDMCAI0026M

MDMCAA0194M MDMCAC0678M MDMCAC0738M MDMCAl0030M

MDMCAA0196M MDMCAC0680M MDMCAC0742M MDMCAI0032M

MDMCAA0198M MDMCAC0682M MDMCAC0748M MDMCAI0034M

MDMCAA0200M MDMCAC0684M MDMCAC0756M MDMCAI0036M

MDMCAA0202M MDMCAC0686M MDMCAC0762M MDMCAI0038M

MDMCAA0204M MDMCAC0688M MDMCAC0764M MDMCAI0040M

MDMCAA0206M MDMCAC0690M MDMCAC0766M

MDMCAA0208M MDMCAC0692M MDMCAC0768M -

MDMCAA0210M MDMCAC0694M MDMCAC0770M

Main Fitting RH

Serial Number:

Main Fitting RH

Serial Number

Main Fitting RH

Serial Number

Main Fitting RH

Serial Number

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix A

Service Letter No. A33-34 A20

Page 9

SERVICE LETTER

NOTE : Please refer to OIT SE 999.0012/07/LB Rev. 04 dated 05 May 08 and TFU Ref:

32.00.00.012, for information regarding (S1), (S2C) and (S3) in the above Table 2,

Section 1.

NOTE : If Messier-Dowty Limited Service Bulletin A33/34-32-257 has been done to the

main fitting part number 201488325, the new main fitting part number will be

201488336, while keeping the same serial number.

NOTE : * Production part listed as quarantine or WIP - to be scrapped.

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

INTENTIONALLY BLANK

Appendix A

Service Letter No. A33-34 A20

Page 10

SERVICE LETTER
Messier-Dowty Ltd

Appendix B

Service Letter No. A33-34 A20

Page 1 of 4

CAGE: K0654

Cheltenham Road, Gloucester, GL2 9QH, England

Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821

SERVICE LETTER

APPENDIX B

AFFECTED SERIAL NUMBERS FOR MAIN LANDING GEAR BOGIE BEAMS 201272304, 

50-1217001-01, 50-1217001-04 AND 50-2117002-00

TABLE 1

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Section 1: The list of serial numbers of parts that are SUSPECTED to be affected by the 

material specification, including:

- parts with no concession (or for spare parts: not identified in a EASA form 1

or in a FAA Form 8130-3)

- parts for which a defect has been documented.

06MDG2600 (S2B) 06MDG2837 (S2A) 06MDG4769 (S2A) 06MDG5837 (S2B)

06MDG2601 (S2A) 06MDG2838 (S2A) 06MDG4770 (S2A) 06MDG5838 (S2B)

06MDG2602 (S2A) 06MDG2839 (S2A) 06MDG4776 (S2A) 06MDG5839 (S2B)

06MDG2603 (S2A) 06MDG2840 (S2A) 06MDG4777 (S2A) 06MDG5840 (S2B)

06MDG2604 (S2A) 06MDG2841 (S2A) 06MDG4778 (S2A) 06MDG5841 (S2B)

06MDG2605 (S2A) 06MDG2850 (S2A) 06MDG4947 (S2C) 06MDG5842 (S2A)

06MDG2805 (S2C) 06MDG2851 (S2C) 06MDG4948 (S2C) 06MDG5843 (S2A)

06MDG2806 (S2A) 06MDG2852 (S2A) 06MDG4949 (S2A) 06MDG5844 (S2B)

06MDG2807 (S2A) 06MDG2853 (S2A) 06MDG4950 (S2A) 06MDG5845 (S2B)

06MDG2808 (S2A) 06MDG2897 (S2C) 06MDG4951 (S2A) 06MDG5846 (S2B)

06MDG2809 (S2A) 06MDG2898 (S2C) 06MDG4952 (S2A) 06MDG5847 (S2A)

06MDG2810 (S2A) 06MDG2899 (S2B) 06MDG4953 (S2B) 06MDG5848 (S2A)

06MDG2811 (S2A) 06MDG2900 (S2B) 06MDG4954 (S2B) 06MDG5849 (S2A)

06MDG2832 (S2C) 06MDG2903 (S2A) 06MDG4955 (S2A) 06MDG5850 (S2A)

06MDG2833 (S2C) 06MDG2904 (S2C) 06MDG4956 (S2A) 06MDG10434 (S2A)

06MDG2834 (S2A) 06MDG2906 (S2B) 06MDG5834 (S2B) 06MDG10435 (S2A)

06MDG2835 (S2A) 06MDG2907 (S2B) 06MDG5835 (S2B) 06MDG10436 (S2A)

06MDG2836 (S2A) 06MDG2908 (S2A) 06MDG5836 (S2B) 06MDG10437 (S2A)

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix B

Service Letter No. A33-34 A20

Page 2

SERVICE LETTER

06MDG10438 (S2A) 06MDG14351 (S2A) 06MDG15893 (S2C)* 07MDG3540 (S2B)

06MDG10439 (S2A) 06MDG14352 (S2A) 06MDG15894 (S2A) 07MDG3541 (S2B)

06MDG10440 (S2A) 06MDG14353 (S2A) 06MDG15895 (S2A) 07MDG3542 (S2B)

06MDG10441 (S2A) 06MDG14354 (S2A) 06MDG15896 (S2A) 07MDG3543 (S2B)

06MDG10442 (S2A) 06MDG14355 (S2C) 06MDG15897 (S2A) 07MDG3545 (S2B)

06MDG10443 (S2A) 06MDG14356 (S2C) 06MDG15898 (S2A) 07MDG3546 (S2B)

06MDG10538 (S2A) 06MDG14415 (S2C) 07MDG1179 (S2A) 07MDG3547 (S2B)

06MDG10539 (S2A) 06MDG14416 (S2C) 07MDG1180 (S2A) 07MDG3662 (S2A)

06MDG10548 (S2A) 06MDG14417 (S2A) 07MDG1181 (S2A) 07MDG3663 (S2B)

06MDG10549 (S2A) 06MDG14418 (S2A) 07MDG1182 (S2A) 07MDG3664 (S2B)

06MDG12158 (S2A) 06MDG14419 (S2C) 07MDG1183 (S2A) 07MDG3665 (S2B)

06MDG12159 (S2A) 06MDG14420 (S2C) 07MDG1184 (S2A) 07MDG3666 (S2B)

06MDG12174 (S2A) 06MDG15548 (S2A) 07MDG1185 (S2A) 07MDG3667 (S2B)

06MDG12175 (S2B) 06MDG15549 (S2A) 07MDG1186 (S2A) 07MDG3668 (S2B)

06MDG12177 (S2A) 06MDG15789 (S2A) 07MDG1187 (S2A) 07MDG3669 (S2A)

06MDG12178 (S2A) 06MDG15790 (S2A) 07MDG1188 (S2A) 07MDG3671 (S2B)

06MDG12179 (S2A) 06MDG15791 (S2A) 07MDG1189 (S2A) 07MDG6041 (S2B)

06MDG13934 (S2B) 06MDG15792 (S2A) 07MDG1190 (S2A) 07MDG6042 (S2B)

06MDG13935 (S2B) 06MDG15793 (S2A) 07MDG1191 (S2A) 07MDG6043 (S2B)

06MDG13938 (S2B) 06MDG15794 (S2A) 07MDG1192 (S2A) 07MDG6044 (S2B)

06MDG13939 (S2B) 06MDG15795 (S2C) 07MDG1193 (S2A) 07MDG6045 (S2B)

06MDG13940 (S2B) 06MDG15796 (S2C) 07MDG1194 (S2A) 07MDG6046 (S2B)

06MDG13941 (S2A) 06MDG15797 (S2A) 07MDG1195 (S2A) 07MDG6047 (S2B)

06MDG13942 (S2A) 06MDG15798 (S2A) 07MDG1196 (S2A) 07MDG6048 (S2A)

06MDG14032 (S2B) 06MDG15890 (S2A) 07MDG3537 (S2A) 07MDG6049 (S2A)

06MDG14033 (S2A) 06MDG15891 (S2A) 07MDG3538 (S2B) 07MDG6050 (S2A)

06MDG14034 (S2A) 06MDG15892 (S2B) 07MDG3539 (S2B) 07MDG6051 (S2A)

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix B

Service Letter No. A33-34 A20

Page 3

SERVICE LETTER

07MDG6052 (S2A) 12036/05 (S2A) 8095/05 (S2A) 8289/05 (S2A)

07MDG6053 (S2B) 12037/05 (S2A) 8096/05 (S2A) 8290/05 (S2A)

07MDG6952 (S2A) 12243/05 (S2A) 8097/05 (S2A) 8291/05 (S2A)

07MDG6953 (S2A)* 12244/05 (S2A) 8098/05 (S2A) 8292/05 (S2A)

07MDG6954 (S2A) 12245/05 (S2A) 8099/05 (S2A) 8293/05 (S2A)

07MDG6955 (S2A) 12246/05 (S2A) 8100/05 (S2A) 8294/05 (S2A)

07MDG6957 (S2B) 12447/05 (S2A) 8209/05 (S2B) 8295/05 (S2A)

07MDG6958 (S2B) 12448/05 (S2A) 8210/05 (S2B) 9625/05 (S2A)

07MDG6959 (S2B) 12449/05 (S2C) 8211/05 (S2A) 9626/05 (S2A)

07MDG6960 (S2B) 12450/05 (S2C) 8212/05 (S2A) 9627/05 (S2A)

07MDG7077 (S2A) 13951/05 (S2C) 8213/05 (S2A) 9628/05 (S2A)

07MDG7078 (S2A) 13952/05 (S2C) 8214/05 (S2A) 9629/05 (S2A)

07MDG7079 (S2A) 14906/05 (S2A) 8280/05 (S2A) 9630/05 (S2A)

07MDG7080 (S2A) 14908/05 (S2A) 8281/05 (S2A) 9873/05 (S2A)

07MDG7081 (S2B) 14909/05 (S2A) 8282/05 (S2A) 9874/05 (S2A)

07MDG7082 (S2B) 14910/05 (S2A)* 8283/05 (S2A) 9875/05 (S2A)

07MDG7083 (S2B) 14911/05 (S2A) 8284/05 (S2A) 9876/05 (S2A)

07MDG7084 (S2B) 14912/05 (S2A) 8285/05 (S2B) 9877/05 (S2A)

12029/05 (S2A) 3899/05 (S2B) 8286/05 (S2B) 9878/05 (S2A)

12030/05 (S2B) 3900/05 (S2B) 8287/05 (S2A) -

12035/05 (S2A) 8094/05 (S2A) 8288/05 (S2A) -

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Bogie Beam

Serial Number:

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix B

Service Letter No. A33-34 A20

Page 4

SERVICE LETTER

AFFECTED SERIAL NUMBERS FOR MAIN LANDING GEAR BOGIE BEAMS 201272304, 

50-1217001-01, 50-1217001-04 AND 50-2117002-00

NOTE : Please refer to OIT SE 999.0012/07/LB Rev. 04 dated 05 May 08 and TFU Ref:

32.00.00.012, for information regarding (S2A), (S2B) and (S2C) in the above Table

1, Section 1.

NOTE : All bogie part numbers 50-1217001-01 in the above list were delivered from

Messier-Dowty prior to introduction of the -04 evolution. The lives for the specific

parts detailed above is the same whether they are -01 or -04 parts. Retrospective

embodiment of A34/56M-32-25 on these bogies by re-part numbering the bogie

with part number 50-1217001-04, whilst retaining the same serial number, will

allow operators to claim the revised -04 life, with no physical change. However,

the component will still be subject to the same reduced life limitations due to

having been manufactured from MTL1201 material suspected of having deficient

fatigue properties. For these specific -01 parts therefore, the life is the same as

for the affected -04 parts.

NOTE : * Production part listed as quarantine or WIP - to be scrapped.

Bogie Beam

Serial Number:

Bogie Beam

Serial Number

Bogie Beam

Serial Number

Bogie Beam

Serial Number

Section 2: The list of serial numbers of parts that are NO LONGER SUSPECTED to be 

affected by the material specification, including:

- parts delivered with a concession (or for spare parts: identified either in a

EASA form 1 or in a FAA Form 8130-3)

- parts previously listed in the SL A20.

06MDG10550 – – –

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix C

Service Letter No. A33-34 A20

Page 1 of 2

CAGE: K0654

Cheltenham Road, Gloucester, GL2 9QH, England

Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821

SERVICE LETTER

APPENDIX C

AFFECTED SERIAL NUMBERS FOR CENTER LANDING GEAR MAIN FITTING PART NUMBERS 

50-1105296-00, 50-1105326-00 AND 50-1105236-01.

TABLE 1

Main Fitting 

Serial Number:

Main Fitting

Serial Number:

Main Fitting

Serial Number:

Main Fitting

Serial Number:

Section 1: The list of serial numbers of parts that are SUSPECTED to be affected by the 

material specification, including:

- parts with no concession (or for spare parts: not identified in a EASA form

1 or in a FAA Form 8130-3)

- parts for which a defect has been documented.

06MDM00021 (S1) 07MDM00035 (S3) MDMCBA0082M (S3) MDMCBA0120M (S3)

06MDM00022 (S3) 07MDM00036 (S3) MDMCBA0098M (S3) MDMCBA0121M (S3)

06MDM00023 (S3) 07MDM00037 (S3) MDMCBA0099M (S3) MDMCBA0137M (S1)

06MDM00024 (S3) 07MDM00038 (S3) MDMCBA0100M (S3) MDMCBA0138M (S1)

06MDM00025 (S3) 07MDM0041 (S3) MDMCBA0101M (S3) MDMCBA0139M (S1)

06MDM00026 (S3) 07MDM0042 (S3) MDMCBA0105M (S3) MDMCBA0140M (S1)

06MDM00027(S3) MDMCBA0052M (S3) MDMCBA0106M (S3) MDMCBJ0007M (S2C)

06MDM00028 (S3) MDMCBA0053M (S3) MDMCBA0107M (S3) MDMCBJ0008M (S2C)

06MDM00029 (S3) MDMCBA0055M (S3) MDMCBA0110M (S3) -

06MDM00030 (S3) MDMCBA0056M (S3) MDMCBA0111M (S3) -

06MDM00031 (S3) MDMCBA0057M (S3) MDMCBA0114M (S3) -

06MDM00032 (S3) MDMCBA0058M (S3) MDMCBA0115M (S3) -

07MDM00033 (S3) MDMCBA0059M (S3) MDMCBA0118M (S3) -

07MDM00034 (S3) MDMCBA0079M (S3) MDMCBA0119M (S3) -

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix C

Service Letter No. A33-34 A20

Page 2

SERVICE LETTER

NOTE : Please refer to OIT SE 999.0012/07/LB Rev. 04 dated 05 May 08 and TFU Ref:

32.00.00.012, for information regarding (S1), (S2C) and (S3) in the above Table 1,

Section 1.

Main Fitting 

Serial Number:

Main Fitting

Serial Number:

Main Fitting

Serial Number:

Main Fitting

Serial Number:

Section 2: The list of serial numbers of parts that are NO LONGER SUSPECTED to be 

affected by the material specification, including:

- parts delivered with a concession (or for spare parts: identified either in a

EASA form 1 or in a FAA Form 8130-3)

- parts previously listed in the SL A20.

06MDM00011 06MDM00017 MDMCBA0129M MDMCBA0136M

06MDM00012 06MDM00018 MDMCBA0130M MDMCBJ0004M

06MDM00013 06MDM00019 MDMCBA0133M MDMCBJ0006M

06MDM00014 06MDM00020 MDMCBA0134M MDMCBJ0009M

06MDM00015 MDMCBA0128M MDMCBA0135M MDMCBJ0010M

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix D

Service Letter No. A33-34 A20

Page 1 of 2

CAGE: K0654

Cheltenham Road, Gloucester, GL2 9QH, England

Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821

SERVICE LETTER

APPENDIX D

AFFECTED SERIAL NUMBERS FOR MAIN LANDING GEAR SLIDING PISTON PART NUMBER

50-2109001-01, 201487307 AND 201487309.

TABLE 1

NOTE : Please refer to OIT SE 999.0012/07/LB Rev. 04 dated 05 May 08 and TFU Ref:

32.00.00.012, for information regarding (S1) in the above Table 1, Section 1.

NOTE : If Messier-Dowty Limited Service Bulletin A33/34-32-233 or A33/34-32-234 has

been done to the sliding piston part number 201487307, the new sliding piston

part number will be 201487309, while keeping the same serial number.

Sliding Piston

Serial Number:

Sliding Piston

Serial Number:

Sliding Piston

Serial Number:

Sliding Piston

Serial Number:

Section 1: The list of serial numbers of parts that are SUSPECTED to be affected by the 

material specification, including:

- parts with no concession (or for spare parts: not identified in a EASA form

1 or in a FAA Form 8130-3)

- parts for which a defect has been documented.

07B0694X1455 (S1) 07B0697X1459 (S1) B0046-292 (S1) -

07B0695X1456 (S1) 07B0698X1460 (S1) B0047-300 (S1) -

07B0696X1457 (S1) B0045-290 (S1) B0048-302 (S1) -

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

INTENTIONALLY BLANK

Appendix D

Service Letter No. A33-34 A20

Page 2

SERVICE LETTER
Messier-Dowty Ltd

Appendix E

Service Letter No. A33-34 A20

Page 1 of 2

CAGE: K0654

Cheltenham Road, Gloucester, GL2 9QH, England

Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821

SERVICE LETTER

APPENDIX E

Material

Messier-Dowty Ltd will provide main landing gear main fittings, bogie beams, sliding pistons and

center landing gear main fittings at planned maintenance opportunities to support the

replacement of affected components prior to the drop-dead date where the life is exhausted prior

to overhaul.

Your regional Messier-Dowty Ltd Customer Service Manager will provide the part number and

serial number of the material to be replaced, and details of the new replacement items.

Main Landing Gear – Main Fittings

To support MLG main fitting interventions details of replacement material to be ordered are as

follows:

Attrition Spares

It is recognised that some components within the MLG that are not considered 100 percent

replacements may be required due to unforeseen circumstances. Messier-Dowty Ltd will place at

strategic locations sufficient parts to support interventions that are to be undertaken in that

geographic region. The list of components will include:

Where required replacement parts will be confirmed by the Messier-Dowty Ltd Working Party

Team Leader, ordered by the operator and shipped on the next available flight to the required

location.

MLG Main Fitting

Series Detail P/N Procurable P/N Kit No.

201252 201488324 201488255 201588MFK1T1

201252 201488325 201488256 201588MFK1T1

201490 201488324 201488277 201488MFK1T1

201490 201488325 201488278 201488MFK1T1

10-21 50-2107001-00 30-2107001-00 81-2101001-00

10-21 50-2108001-00 30-2108001-00 81-2101001-00

10-12 50-1209001-03 30-1209001-03 81-1201005-00

10-12 50-1210001-03 30-1210001-03 81-1201005-00

Bell Crank Bogie Pivot Pin

SM2 Pin SM8/SM9 Pins

Lower Bearing Stop Pads

Upper Bearing COV (spare seal)

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix E

Service Bulletin No. A33-34 A20

Page 2

SERVICE LETTER

Main Landing Gear – Bogie Beams

To support MLG bogie beam interventions details of replacement material to be ordered are as

follows:

Main Landing Gear – Sliding Piston

To support MLG sliding piston interventions details of replacement material to be ordered are as

follows:

Centre Landing Gear – Main Fitting

To support CLG main fitting interventions details of replacement material to be ordered are as

follows:

Working Party Support

Where the component needs to be replaced prior to first overhaul, Messier-Dowty Ltd will support

the first change-out of affected components with a free of charge service engineer team. At this

time Messier-Dowty Ltd offer training to the operator’s maintenance provider to enable them to

support subsequent interventions themselves.

MLG Bogie Beam

Detail P/N Procurable P/N Kit No.

201272304 201272235 201272B0GK1T1

50-2117002-00 30-2117002-00 81-2111002-00

50-1217001-04 30-1217001-06 81-1211001-00

MLG Sliding Piston

Detail P/N Procurable P/N Consumable Kit No.

50-2109001-01 30-2109001-01 81-1101103-00

201487307 201487216 201487SL1DK1T1

201487309 201487219 201487SL1DK1T1

CLG Main Fitting

Detail P/N Procurable P/N Seal Kit No. Consumable Kit No.

50-1105296-00 30-1105296-01 81-1101034-02 81-1105450-00

50-1105326-00 30-1105326-00 81-1101101-00 81-1101102-00

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix F

Service Letter No. A33-34 A20

Page 1 of 2

CAGE: K0654

Cheltenham Road, Gloucester, GL2 9QH, England

Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821

SERVICE LETTER

APPENDIX F

PERMANENT DISPOSAL OF SCRAP AIRCRAFT PARTS AND MATERIALS

1. Mutilation of Parts and Materials

A. Scrap aircraft parts and materials which will no longer be used are to be permanently

disposed of. The parts should be mutilated so that they cannot be re-used for their original

intended use. The mutilation should be sufficient to make sure that parts cannot be repaired

or camouflaged to give the appearance of acceptable parts. To effectively mutilate parts or

materials you should:

(1) remove major lugs or other integral features

(2) permanently distort the part

(3) cut holes into the part with a saw

(4) saw parts into many small pieces

B. The list which follows is not considered as effective methods of mutilation:

(1) stamp or mark the word ‘SCRAP’ on the part

(2) spray the part with paint

(3) hammer marks on the part

(4) Identification tags or marks

(5) drilling small holes in the parts

(6) sawing in two pieces.

C. After successful mutilation of a part or parts, complete a copy of the pro-forma shown on

page 2 of this Appendix F with the required information and forward it to:

The Retrofit Team

Messier-Dowty Limited

Cheltenham Road

Gloucester

GL2 9QH

England

Fax: + 44 01452 711972.

email: retrofit@messier-dowty.com

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

Appendix F

Service Bulletin No. A33-34 A20

Page 2

SERVICE LETTER

Permanent Disposal of Scrap Aircraft Parts and Materials - Pro-Forma

Hand of Unit removed from: Left/Right/Not applicable (please tick)

Component(s) removed from MSN: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

I, the undersigned, confirm that the above referenced part(s) has/have been removed from 

useful service and that the part(s) has/have been successfully mutilated in accordance with 

the advice given (Messier-Dowty Limited Service Letter A33-34 A20, Appendix E refers). 

I also confirm that the part(s) has/have been properly disposed of as scrap.

PERMANENT DISPOSAL OF SCRAP AIRCRAFT PARTS AND MATERIALS 

Additional information or comments:

Signed: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Dated: _ _ _ _/_ _ _ _/_ _ _ _ _ _ _

For and on Behalf of: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Aircraft Type: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

Description of Part(s): _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Part Number(s): _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Serial Number(s): _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

Date of Destruction: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

Jul 31/2009 (Revision 5)
Messier-Dowty Ltd

CAGE: K0654

Cheltenham Road, Gloucester, GL2 9QH, England

Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821

SERVICE LETTER

AIRBUS A330/A340 MAIN LANDING GEAR

SERVICE LETTER A33-34 A20

TRANSMITTAL LETTER FOR REVISION 5

DATE JUL 31/2009

1. REASON

A. Appendix A: To update tables 1 and 2 and the notes. 

B. Appendix B: To update table 1 and the notes.

C. Appendix C: To update table 1 and the notes.

D. Appendix D : To update note.

2. ACTION

A. Remove and destroy existing pages 1 and 2 dated Oct 10/2008 (Revision 4) and substitute

revised pages 1 and 2 dated Jul 31/2009 (Revision 5).

B. Appendix A. Remove and destroy existing pages 1 to 6 dated Oct 10/2008 (Revision 4) and

substitute the revised pages 1 to 10 dated Jul 31/2009 (Revision 5).

C. Appendix B. Remove and destroy existing pages 1 and 4 dated Oct 10/2008 (Revision 4)

and substitute the revised pages 1 to 4 dated Jul 31/2009 (Revision 5).

D. Appendix C. Remove and destroy existing pages 1 and 2 dated Oct 10/2008 (Revision 4)

and substitute the revised pages 1 and 2 dated Jul 31/2009 (Revision 5).

E. Appendix D. Remove and destroy existing pages 1 and 2 dated Oct 10/2008 (Revision 4)

and substitute the revised pages 1 and 2 dated Jul 31/2009 (Revision 5).

F. Appendix E. Remove and destroy existing pages 1 and 2 dated Oct 10/2008 (Revision 4)

and substitute the revised pages 1 and 2 dated Jul 31/2009 (Revision 5).

G. Appendix F. Remove and destroy existing pages 1 and 2 dated Oct 10/2008 (Revision 4) and

substitute the revised pages 1 and 2 dated Jul 31/2009 (Revision 5).

3. PREVIOUS REVISION/ISSUE DETAILS

Revision Status Date

A. Initial Issue Mar 13/2007

B. Revision 1 Sep 14/2007

C. Revision 2 Apr 28/2008

D. Revision 3 Jun 27/2008

E. Revision 4 Oct 10/2008
Messier-Dowty Ltd

INTENTIONALLY BLANK

SERVICE LETTER