# @A340 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. 

# MANDATORYMANDATORYMANDATORY
ATA SYSTEM: 27 

### TITLE: FLIGHT CONTROLS - TRIMMABLE HORIZONTAL STABILIZER ACTUATOR - BALLSCREW INTEGRITY CHECK **CONF ALL MODIFICATIONS None REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES The aim of the AMM Task 27-44-51-220-801 is to perform the integrity check of the Trimmable Horizontal Stabilizer Actuator (THSA) ballscrew shaft (Primary and Secondary Load path). Current AMM Task 27-44-51-220-801 checks the ballscrew shaft integrity by applying a differential torque between the ballscrew (Primary Load path) and the tie bar (Secondary Load path). This check is satisfactorily passed if there is a limited differential rotation between the primary and the secondary load paths. AMM Task 27-44-51-220-801 is called by the MRB task 274000-12 every 16,000FH. Further to corrosion issue identified in service on THSA PN 47147-500 and 47147-700 at the level of the ballscrew lower splines (which are loaded only in case of ballscrew rupture), an interval reduction of the ballscrew integrity check is proposed as a protective action. This Inspection Service Bulletin requires the application of the Ballscrew Integrity Check as per MRB task 274000-12 on THSA PN 47147-500 and 47147-700 every 12,000 FH / 4,400 FC. Accomplishment of this Service Bulletin will permit to ensure a reliable function of the THSA by checking the ballscrew integrity. GENERAL EVALUATION EVALUATION TABLE COMPLIANCE MANDATORY (1) CANCELS INSPECTION SB NO POTENTIAL AD YES A/C OPERATION AFFECTED NO RELIABILITY AFFECTED NO PAX COMFORT AFFECTED NO DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 1 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN SUMMARY EVALUATION TABLE COST SAVING NO LROPS AFFECTED NO STRUCTURAL LIFE EXTN NO VENDOR SB INVOLVED NO NOTE (1): Service Bulletin must be accomplished. MATERIAL PRICE INFORMATION No Material EFFECTIVITY This Service Bulletin is applicable to this (these) operator(s) :

47W 56W 83V AAW AFR ALK ARG CAL CCA CES CPA DGA DLH FIN GAF GFA HFY IBE IRC KAC KNE LAN M3R MAU MDG MSR NMB PAL QAF RJA S3R SAA SAS SFB SLM SVW SWR TAP THT THY UAE VCV VIR XAX 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 274186-832-801-001: Inspection TOTAL MANHOURS 15.00 ELAPSED TIME (HOURS) 11.00 APPENDICES Appendix 01 - Elapsed Time Assumptions Appendix 02 - Inspection Report
DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 2 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN SUMMARY

**CONF ALL

FR87

FR80 

### A **B**

1CS



## B 312AR



## A Z310 PANEL ACCESS

F_SB_274186_5_SAAA_01_01 Figure A-FSAAA - Sheet 01

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 3 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN SUMMARY

This Page Intentionally Left Blank

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 4 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 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



# MANDATORYMANDATORYMANDATORY
ATA SYSTEM: 27 

### TITLE: FLIGHT CONTROLS - TRIMMABLE HORIZONTAL STABILIZER ACTUATOR - BALLSCREW INTEGRITY CHECK 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 340-211 340-212 340-213 340-311 340-312 340-313 (2) Effectivity by MSN 0002-0006 0009 0011 0013-0015 0018-0029 0031-0035 0038 0041 0043-0044 0046-0049 0051-0053 0056-0058 0061 0063 0074-0076 0078-0081 0084-0085 0088-0091 0093-0094 0101 0104 0114-0115 0117 0123 0125-0126 0128-0129 0131 0133-0137 0139 0141-0142 0145-0147 0149-0152 0154 0156-0161 0163-0164 0166-0170 0173-0176 0178-0180 0182 0185-0187 0190 0192-0194 0196-0197 0199 0201-0202 0204 0207-0208 0210 0212-0218 0220-0221 0225 0227-0228 0233 0235-0237 0239 0242-0243 0245-0246 0252 0257 0260 0263-0264 0268 0270 0273-0274 0278 0280 0282 0292 0297 0302 0304 0307 0310 0318-0319 0321 0325 0327 0329 0331-0332 0335 0347 0352 0354-0355 0359 0363 0367 0373-0374 0377-0379 0381 0385 0387 0390 0395 0399 0402 0406 0411 0413-0415 0424 0429-0430 0433-0435 0438 0442 0446-0447 0450 0459 0467 0470 0474 0483 0528 0538 0541 0544-0546 0554 0556 0559 0561-0562 0582 0585 0590 0598 0643 0646 0651 0668 0793 0800 0835 0844 0921 0938 0955

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 1 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 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 47W 0009 56W 0003 0013 0015 83V 0235 0239 0280 0292 AAW 0151 AFR 0029 0078 0084 0186 0207 0237 0245 0246 0260 0307 0310 0377 0399 ALK 0032 0033 0034 0367 0374 0381 ARG 0048 0063 0074 0080 0085 0093 0094 0123 0126 0128 0373 CAL 0402 0406 0411 0415 0433 0541 CCA 0192 0199 0201 0242 0243 0264 CES 0129 0131 0141 0161 0182 CPA 0136 0137 0142 0147 0157 0160 0208 0218 0220 0227 0228 DGA 0075 0081 DLH 0020 0024 0027 0028 0035 0052 0053 0056 0135 0158 0213 0233 0252 0297 0304 0321 0325 0327 0335 0347 0352 0354 0379 0390 0434 0447 FIN 0058 0168 0174 0835 0844 0921 0938 GAF 0274 0355 GFA 0212 0215 0282 0554 HFY 0117 0133 IBE 0005 0088 0125 0134 0145 0146 0170 0193 0217 0221 0302 0318 0329 0332 0387 0414 0459 0474 0483 IRC 0002 KAC 0089 0090 0101 0104 KNE 0004 LAN 0167 0359 0363 0429 0442 M3R 0061 MAU 0076 0152 0194 0268 0793 0800 MDG 0210 0319 MSR 0156 0159 0178 NMB 0047 0051 PAL 0173 0176 0187 0196 QAF 0026 0528 RJA 0014 0022 0038 0043 S3R 0204 SAA 0006 0011 0018 0019 0021 0197 0378 0544 0582 0590 0643 0646 0651 SAS 0413 0424 0430 0435 0450 0467 0470 SFB 0046 SLM 0049
DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 2 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN

OPERATOR MSN SVW 0955 SWR 0150 0154 0169 0175 0179 0263 0538 0545 0546 0556 0559 0561 0562 0585 0598 TAP 0041 0044 0079 0091 THT 0385 0395 0438 0446 0668 THY 0023 0025 0057 0115 0180 0216 0257 0270 0331 UAE 0139 0149 0163 0166 0185 0190 0202 0236 VCV 0031 VIR 0114 0164 0214 0225 XAX 0273 0278 (4) Configuration by MSN MSN CONFIGURATION 0002 0003 0004 0005 0006 0009 0011 0013 0014 0015 0018 0019 0020 0021 0022 0023 0024 0025 0026 0027 0028 0029 0031 0032 0033 0034 0035 0038 0041 0043 0044 0046 0047 0048 0049 0051 0052 0053 0056 0057 0058 0061 0063 0074 0075 0076 0078 0079 0080 0081 0084 0085 0088 0089 0090 0091 0093 0094 0101 0104 0114 0115 0117 0123 0125 0126 0128 0129 0131 0133 0134 0135 0136 0137 0139 0141 0142 0145 0146 0147 0149 0150 0151 0152 0154 0156 0157 0158 0159 0160 0161 0163 0164 0166 0167 0168 0169 0170 0173 0174 0175 0176 0178 0179 0180 0182 0185 0186 0187 0190 0192 0193 0194 0196 0197 0199 0201 0202 0204 0207 0208 0210 0212 0213 0214 0215 0216 0217 0218 0220 0221 0225 0227 0228 0233 0235 0236 0237 0239 0242 0243 0245 0246 0252 0257 0260 0263 0264 0268 0270 0273 0274 0278 0280 0282 0292 0297 0302 0304 0307 0310 0318 0319 0321 0325 0327 0329 0331 0332 0335 0347 0352 0354 0355 0359 0363 0367 0373 0374 0377 0378 0379 0381 0385 0387 0390 0395 0399 0402 0406 0411 0413 0414 0415 0424 0429 0430 0433 0434 0435 0438 0442 0446 0447 0450 0459 0467 0470 0474 0483 0528 0538 0541 0544 0545 0546 0554 0556 0559 0561 0562 0582 0585 0590 0598 0643 0646 0651 0668 0793 0800 0835 0844 0921 0938 0955 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: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 3 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN
C. REASON (1) History The aim of the AMM Task 27-44-51-220-801 is to perform the integrity check of the Trimmable Horizontal Stabilizer Actuator (THSA) ballscrew shaft (Primary and Secondary Load path). Current AMM Task 27-44-51-220-801 checks the ballscrew shaft integrity by applying a differential torque between the ballscrew (Primary Load path) and the tie bar (Secondary Load path). This check is satisfactorily passed if there is a limited differential rotation between the primary and the secondary load paths. AMM Task 27-44-51-220-801 is called by the MRB task 274000-12 every 16,000FH. Further to corrosion issue identified in service on THSA PN 47147-500 and 47147-700 at the level of the ballscrew lower splines (which are loaded only in case of ballscrew rupture), an interval reduction of the ballscrew integrity check is proposed as a protective action. (2) Objective/Action This Inspection Service Bulletin requires the application of the Ballscrew Integrity Check as per MRB task 274000-12 on THSA PN 47147-500 and 47147-700 every 12,000 FH / 4,400 FC. (3) Advantages Accomplishment of this Service Bulletin will permit to ensure a reliable function of the THSA by checking the ballscrew integrity. (4) Operational/Maintenance Consequences None D. DESCRIPTION To accomplish this Service Bulletin it is necessary to : Task 274186-832-801-001: Inspection (1) Do a Special Detailed Inspection of the THSA Ballscrew (2) Replace the Trimmable Horizontal Stabilizer Actuator (THSA) E. COMPLIANCE (1) Classification MANDATORY: Service Bulletin must be accomplished.

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 4 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN (2) Accomplishment Timescale 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 intervals given below but reference should be made to the AD for confirmation of the mandated accomplishment timescale. Table 1, all Config. - Special Detailed Inspection of the THSA Ballscrew Compliance Time (Whichever occurs latest) Condition Action Threshold (Whichever occurs latest) Grace Period Repetitive Interval (Whichever occurs first)

For THSA which PN are not 47147-500 or 47147-700. No further action None None None

For THSA which PN are 47147-500 or 47147-700 having accumulated less than 11,000 FH since the last application of MRB Task 274000-12 or since aircraft first flight whichever occurs the latest. Do SUBTASK 274186-280-001 001 Do a Special Detailed Inspection of the THSA Ballscrew 12,000 FH since the last application of MRB task 274000-12 or since aircraft first flight. None None

For THSA which PN are 47147-500 or 47147-700 having accumulated between 11,000 FH and 15,000 FH since the last application of MRB Task 274000-12 or since aircraft first flight whichever occurs the latest. Do SUBTASK 274186-280-001 001 Do a Special Detailed Inspection of the THSA Ballscrew Within 1,000 FH None None

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 5 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN

For THSA which PN are 47147-500 or 47147-700 having accumulated more than 15,000 FH since the last application of MRB Task 274000-12 or since aircraft first flight whichever occurs the latest. Do SUBTASK 274186-280-001 001 Do a Special Detailed Inspection of the THSA Ballscrew 16,000 FH since the last application of MRB task 274000-12 or since aircraft first flight. None None

If the Ballscrew integrity test is correct. Repeat the Inspection, refer to TASK 274186-832-801 001 Inspection None None 12,000 FH / 4,400 FC

If THSA is not replaced by PN 47147-500 or 47147-700: No further action If the Ballscrew integrity test is not correct. Replace the THSA, refer to SUBTASK 274186-960-001 001 Replace the Trimmable Horizontal Stabilizer Actuator (THSA) Before next flight None

If THSA is replaced by PN 47147-500 or 47147-700: Repeat this Inspection at 12,000 FH / 4,400 FC. F. APPROVAL The technical content of this document is approved under the authority of Design Organisation Approval No. EASA.21J.031. If an aircraft listed in the effectivity has a modification or repair embodied that is not of AIRBUS origin, and which affects the content of this Service Bulletin, the operator is responsible for obtaining approval by its airworthiness authority for any adaptation necessary before incorporation of the Service Bulletin. G. MANPOWER The manpower estimates given in this Service Bulletin are based on the direct labor cost to do the work. These estimates assume that the work will be done by experienced personnel, and may need to be revised upwards to suit operator’s circumstances. The estimates do not include the time to prepare, plan or inspect the work. Manufacture and procurement of parts and tools, drying times for paints, sealants, etc., and general administration work are also not included. Task 274186-832-801-001: Inspection Get Access 2.00 On Aircraft DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 6 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN
Task 274186-832-801-001: Inspection Do a Special Detailed Inspection of the THSA Ballscrew 2.00 Replace the Trimmable Horizontal Stabilizer Actuator (THSA) 8.00 Tests 1.00 Close-Up 2.00 TOTAL MANHOURS 15.00 ELAPSED TIME (HOURS) 11.00 H. WEIGHT AND BALANCE Not Changed I. ELECTRICAL LOAD DATA Not Changed J. REFERENCES

Aircraft Maintenance Manual (AMM) 06-20-00 06-31-53 06-41-53 12-34-24 27-44-51 Elec. Std. Practices Manual (ESPM) 20-55-00 K. PUBLICATION AFFECTED

Aircraft Wiring List (AWL) Maintenance Planning Document (MPD) 274400-08-1 L. INTERCHANGEABILITY/MIXABILITY Not Applicable M. SPARES Actuator-Ths 47147-500 Actuator-Ths 47147-700

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 7 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN

This Page Intentionally Left Blank

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 8 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN
2. MATERIAL INFORMATION **CONF ALL A. MATERIAL - PRICE AND AVAILABILITY (1) Procurement Addresses Vendor parts are to be procured from: Goodrich Actuation Systems 13 avenue de l’Eguillette Saint-Ouen l’Aumone 95056 Cergy Pontoise CEDEX France (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 AIRBUS will not provide industry support for accomplishment of this Service Bulletin. C. LIST OF COMPONENTS No Kit D. LIST OF MATERIALS - OPERATOR SUPPLIED (1) Consumable Materials NOTE: To accomplish this Service Bulletin it is necessary to use the expendable parts listed in AMM Task 27-44-51-400-805 and AMM Task 27-44-51-400-801. (2) Components None (3) Equipment None E. PARTS TO BE RE-IDENTIFIED BY OPERATOR None F. TOOLING (1) Tooling - Price and Availability None DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 9 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN (2) Tools NOTE: To accomplish this Service Bulletin it is necessary to use the tools listed in AMM Task 27-44-51-220-801 and AMM Task 27-44-51-400-801. (3) Special Tools None

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 10 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN
3. ACCOMPLISHMENT INSTRUCTIONS Task 274186-832-801-001 - 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 From 311 to 312 Modified FIN 1CS Access Door 312AR Manpower TOTAL MANHOURS 15.00 ELAPSED TIME (HOURS) 11.00 A. GENERAL (1) Subtask 274186-910-001-001 - Standard Practices Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) 06-20-00, Page Block 001 06-31-53, Page Block 001 06-41-53, Page Block 001

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 11 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN (a) For the Frame (FR) identification (Refer to AMM 06-31-53, Page Block 001). (b) For the identification of zones (Refer to AMM 06-20-00, Page Block 001) and Manual Front Matter, Zone List. (c) For the identification of access panels (Refer to AMM 06-41-53, Page Block 001) and Manual Front Matter, Panel List. (d) Tag the parts that you must remove and retain to make the subsequent installation easier. (e) Put all the retained hardware in identified plastic bags and attach the bags to the related unit. (f) Put blanking caps on the disconnected electrical connectors. (2) Subtask 274186-839-001-001 - Administrative Manpower Resources Skills NON SPECIFIC (a) Write in the applicable aircraft records that you have done all the work given in this Service Bulletin. B. PREPARATION (1) Subtask 274186-941-001-001 - Job Set-up Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 12-34-24-860-802 Task 27-44-51-220-801 (a) Make sure that aircraft is electrically grounded (Refer to AMM Task 12-34-24-860-802). (b) Put the access platforms in position at the passenger/crew door and Zone 312. (c) Open the passenger/crew door(s). (d) Open the access door 312AR. (e) Do the job set-up procedure as specified in the Check Integrity of the Trimmable Horizontal Stabilizer Actuator (THSA) Ballscrew Shaft (Primary and Secondary Load Path) (Refer to AMM Task 27-44-51-220-801).

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 12 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN
C. PROCEDURE (1) Subtask 274186-280-001-001 - Do a Special Detailed Inspection of the THSA Ballscrew Work Zones and Access Panels Zone Access/Work location From 311 Access Door 312AR To 312 Manpower Resources Manhours 2.00 Minimum number of person 1 Subtask elapsed time 2.00 Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 27-44-51-220-801 At the threshold given in the Planning Information Paragraph E.(2) : (a) For THSA which PN are not 47147-500 or 47147-700: - No further action. (b) For THSA which PN are 47147-500 or 47147-700: 1 Do a Ballscrew integrity test in accordance with AMM Task 27-44-51-220-801:
a If the test is correct: <1> Repeat the Special Detailed Inspection of the THSA Ballscrew at the Interval given in the Planning Information paragraph E.(2) (refer to SUBTASK 274186-280-001 001 Do a Special Detailed Inspection of the THSA Ballscrew ). <2> Send the Appendix 02 - Inspection Report . b If the test is not correct: <1> Before next flight, replace the THSA FIN 1CS, refer to SUBTASK 274186-960-001 001 Replace the Trimmable Horizontal Stabilizer Actuator (THSA) . <a> If the THSA is not replaced by PN 47147-500 or PN 47147-700: [1] No further action [2] Send the Appendix 02 - Inspection Report .

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 13 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN <b> If the THSA is replaced by PN 47147-500 or PN 47147-700: [1] Repeat the Special Detailed Inspection of the THSA Ballscrew at the Interval given in the Planning Information paragraph E.(2) (refer to SUBTASK 274186-280-001 001 Do a Special Detailed Inspection of the THSA Ballscrew ). [2] Send the Appendix 02 - Inspection Report . (2) Subtask 274186-960-001-001 - Replace the Trimmable Horizontal Stabilizer Actuator (THSA) Manpower Resources Manhours 8.00 Minimum number of person 2 Subtask elapsed time 4.00 Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 27-44-51-000-801 Task 27-44-51-400-801 (a) Remove the THSA, FIN 1CS (Refer to AMM Task 27-44-51-000-801). FIN 1CS 1 Actuator-Ths 47147-500 Discard or FIN 1CS 1 Actuator-Ths 47147-700 Discard (b) Install the new THSA, FIN 1CS (Refer to AMM Task 27-44-51-400-801). D. TEST (1) Subtask 274186-720-001-001 - Test Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 27-44-51-000-801 Task 27-44-51-220-801 Task 27-44-51-400-801 (a) If the THSA has been replaced: 1 Job Set-up:
a Remove the safety clip(s) and/or tag(s) and close/unlock the circuit breaker(s) as specified after the installation of the THS Actuator (Refer to AMM Task 27-44-51-400-801). DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 14 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN

2 Procedure:
a Do the test procedure as specified after the installation of the THS Actuator (Refer to AMM Task 27-44-51-400-801). E. CLOSE-UP (1) Subtask 274186-942-001-001 - Close-up Manpower Resources Skills NON SPECIFIC References Aircraft Maintenance Manual (AMM) Task 27-44-51-220-801 (a) Do the close-up procedure as specified after the Check Integrity of the Trimmable Horizontal Stabilizer Actuator (THSA) Ballscrew Shaft (Primary and Secondary Load Path) (Refer to AMM Task 27-44-51-220-801). (b) Make sure that the work area is clean and clear of tools and other items. (c) Close the access panel 312AR. (d) Remove the WARNING NOTICE(S). (e) Close the passenger/crew door(s). (f) Remove the access platforms. (g) Restore the systems and the aircraft to normal operating condition.

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 15 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN

**CONF ALL

− Z311 Z312 1CS 

### A

312AR FR87

FR80



### B 

## A

**NOTE:** AREA TO BE INSPECTED 01 01



## B

F_SB_274186_5_BAAA_01_00 Figure A-FBAAA - Sheet 01 Inspection Area
DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 16 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN

**CONF ALL

QUESTION ACTION FINDING AT THE THRESHOLD GIVEN IN THE PLANNING INFORMATION PARAGRAPH E.(2).

THSA PN YES NO DO A SPECIAL DETAILED INSPECTION OF THE TRIMMABLE HORIZONTAL STABILIZER ACTUATOR (THSA) FIN 1CS BALLSCREW

NO FURTHER ACTION REFER TO AMM TASK 27−44−51−220−801 DO A BALLSCREW INTEGRITY TEST 47147−500 OR

47147−700 REFER TO TASK 274186−832−801−001

YES NO TEST OK

DO A SPECIAL DETAILED INSPECTION OF THE TRIMMABLE HORIZONTAL STABILIZER AT THE THRESHOLD GIVEN IN THE PLANNING INFORMATION PARAGRAPH E.(2). ACTUATOR (THSA) FIN 1CS BALLSCREW

REFER TO TASK 274186−832−801−001 BEFORE NEXT FLIGHT

REPLACE THE THSA REFER TO SUBTASK 274186−960−001−001

REPLACED BY YES NO THSA PN 47147−500 OR 47147−700 NO FURTHER ACTION

F_SB_274186_5_FAAA_01_00 Figure A-FFAAA - Sheet 01 Flow Chart
DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 17 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN

This Page Intentionally Left Blank

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 18 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN Appendix 01 - Elapsed Time Assumptions **CONF ALL The following chart is only a proposal. Operators may determine that another way to do the work is more suitable for them.

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 1 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN Appendix 01 - Elapsed Time Assumptions

**CONF ALL

**ELAPSED TIME ASSUMPTION SERVICE BULLETIN No. A330−27−4186**

GET ACCESS MH ET/S

TOTAL MANHOURS SB ELAPSED TIME 15.00 11.00 STEPS

2.00 2.00

10 0 DO A SPECIAL DETAILED 2.00 2.00

8.00 4.00

TEST 1.00 1.00

CLOSE−UP 2.00 2.00

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

1

1

2

1

1

: : SB ELAPSED TIME (HOURS) 2 4 6 8 12

IF A VSB IS INVOLVED, THE ASSOCIATED MANHOURS ARE NOT REFLECTED IN THIS GANTT CHART. INSPECTION OF THE THSA BALLSCREW

REPLACE THE TRIMMABLE HORIZONTAL STABILIZER ACTUATOR (THSA)

F_SB_274186_5_AAAA_01_00 Figure A-FAAAA - Sheet 01 Elapsed Time Assumptions
DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 2 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN Appendix 02 - Inspection Report **CONF ALL The results of the inspection, including no findings, replacement or action to be done, must be forwarded to Airbus department SEEL6, on the attached inspection report sheet.

DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 1 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN Appendix 02 - Inspection Report

**CONF ALL **INSPECTION REPORT** SERVICE BULLETIN No. : A/C MSN : FLIGHT CYCLES : FLIGHT HOURS : A340−27−4186

DATE OF INSPECTION : RETURN TO : AIRBUS CUSTOMER SERVICES ENGINEERING − SEEL6 FLIGHT CONTROL SYSTEMS A330/A340 &

INSPECTION METHOD : SPECIAL DETAILED WIDE BODY 1 ROND POINT MAURICE BELLONTE 31707 BLAGNAC CEDEX FRANCE FAX +33 (0)5 61 93 32 73

− Z311 Z312 1CS 

### A

312AR FR87

FR80



## A

BALLSCREW INTEGRITY THSA REPLACED BY TEST CORRECT PN 4147−500 OR 4147−700
YES NO YES NO BALLSCREW

THSA PN IS 4147−500 OR 4147−700
YES NO INSPECTION

F_SB_274186_5_RAAA_01_01 Figure A-FRAAA - Sheet 01 Inspection Report
DATE: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 2 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 SERVICE BULLETIN REPORTING SHEET 

### TITLE: FLIGHT CONTROLS - TRIMMABLE HORIZONTAL STABILIZER ACTUATOR - BALLSCREW INTEGRITY CHECK 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: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 1 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.

# @A340 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: Jun 07/12 SERVICE BULLETIN No.: A340-27-4186 REVISION No.: 00 - Jun 07/12 Page: 1 5

Printed in FRANCE ©AIRBUS S.A.S. 2007. All rights reserved.