@A300

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: 27

TITLE: FLIGHT CONTROLS - TRIMMABLE HORIZONTAL STABILIZER (THS) -

IMPROVE THS UPPER ATTACHMENT FITTING.

**CONF ALL

MODIFICATIONS

MODIFICATION CLASSIFICATION

MAJOR None

MINOR 13426S22775

NOTE: As per EASA IR 21, a minor change is one that has no appreciable effect on the

mass, balance, structural strength, reliability, operational characteristics affecting the

airworthiness of the product. All other changes are major changes.

REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES

A specific failure case of the Trimmable Horizontal Stabilizer Actuator (THSA) upper primary

attachment, which may result in a loading of the upper secondary attachment, has been identified by

analysis. Primary load path failure can be caused by bearing migration from the upper attachment

gimbal by failure or loss of a retention bolt.

When engaged the secondary attachment will only withstand the loads for a limited period of time.

This Service Bulletin is issued to advise all operators of A300 aircraft of the issue of the GOODRICH

Service Bulletin No. 723-27-1168.

This Service Bulletin details installation of three secondary retention plates for the gimbal bearings on

the THSA upper primary attachment.

Accomplishment of this Service Bulletin will prevent upper attachment bearing migration and

subsequent primary load path failure.

GENERAL EVALUATION

EVALUATION TABLE

COMPLIANCE MANDATORY (1) CANCELS INSPECTION SB NO

POTENTIAL AD YES A/C OPERATION AFFECTED NO

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SERVICE BULLETIN

SUMMARY

EVALUATION TABLE

RELIABILITY AFFECTED NO PAX COMFORT AFFECTED NO

COST SAVING NO ETOPS AFFECTED NO

STRUCTURAL LIFE EXTN NO VENDOR SB INVOLVED YES

NOTE (1): Service Bulletin must be accomplished.

MATERIAL PRICE INFORMATION

No Material

EFFECTIVITY

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

50W 69X 72U ABR AFG C2A DHL F2I FLM IAW IRA IRM KYE

KZU MIX MNB MSR NTR P2A RUN SOP TNO TSY

CONCURRENT REQUIREMENTS

None

REFERENCES / REPERCUSSIONS

TFU None

OEB None

AOT None

SIL None

LINE MAINTENANCE AFFECTED No

LIFE LIMIT None

OTHER OIT : SE 999.0020/10 dated on 15 March 2010

NATURE OF THE WORK

AIRCRAFT YES

EQUIPMENT YES

HARD NO

SOFT NO

OBRM NO

MANPOWER

Task 270204-831-801-001: Modification of the THSA Upper Attachment.

TOTAL MANHOURS 1.50

ELAPSED TIME (HOURS) 1.50

Additional manhours related to Vendor SB; refer to:

Modify the Upper Attachment of the THS Actuator. GOODRICH Service Bulletin No.

723-27-1168

DATE: Mar 11/11 SERVICE BULLETIN No.: A300-27-0204

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SERVICE BULLETIN

SUMMARY

APPENDICES

None

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SERVICE BULLETIN

SUMMARY

**CONF ALL

FR86

A_SB_270204_5_SAAA_01_00

Z311 Z312 − 

312AR

A B

TRIMMABLE HORIZONTAL STABILIZER ACTUATOR (THSA)

B

A AREA TO BE

MODIFIED

Figure A-FSAAA - Sheet 01

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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: 27

TITLE: FLIGHT CONTROLS - TRIMMABLE HORIZONTAL STABILIZER (THS) -

IMPROVE THS UPPER ATTACHMENT FITTING.

MODIFICATION No.: 13426S22775

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

NOTE: This modification is applicable by Service Bulletin only.

(1) Models

B2-1C B2-203 B2K-3C B4-103 B4-120 B4-203 B4-2C C4-203

F4-203

(2) Effectivity by MSN

0003 0019 0041 0044-0045 0047 0053 0055 0075 0079-0080 0082-0085 0090

0094-0095 0100-0101 0105 0107 0116-0117 0123-0126 0128-0129 0133-0137 0139

0141 0147-0152 0154-0157 0160 0170 0173 0175-0176 0180 0183-0185 0187

0189-0190 0196 0199-0200 0203-0204 0208 0210-0212 0216 0218-0220 0226-0227

0234-0236 0239 0243-0244 0247 0249-0250 0255-0256 0259 0261 0265 0274 0277

0289 0292 0299 0302 0304

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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

50W 0003

69X 0095

72U 0079

ABR 0148 0152 0184 0189 0199 0208 0219 0220 0234 0236 0250 0259

0274 0289

AFG 0180 0190

C2A 0211

DHL 0084 0085 0141 0149 0249 0265

F2I 0083 0094 0128 0133 0135 0136 0137 0156 0170 0235 0243

FLM 0082 0176

IAW 0239

IRA 0080 0139 0151 0173 0185 0187 0226 0256 0299 0302

IRM 0055 0090 0160 0175 0204 0244

KYE 0053 0100 0216

KZU 0041 0044 0101 0117

MIX 0125 0134 0157 0196 0203 0218

MNB 0019 0047 0123 0212 0277 0292 0304

MSR 0200 0255

NTR 0124 0155 0261

P2A 0116 0150

RUN 0075 0105 0107 0147 0154 0183

SOP 0126

TNO 0045 0210 0227 0247

TSY 0129

(4) Configuration by MSN

MSN CONFIGURATION

0003 0019 0041 0044 0045 0047 0053 0055 0075 0079 0080

0082 0083 0084 0085 0090 0094 0095 0100 0101 0105 0107

0116 0117 0123 0124 0125 0126 0128 0129 0133 0134 0135

0136 0137 0139 0141 0147 0148 0149 0150 0151 0152 0154

0155 0156 0157 0160 0170 0173 0175 0176 0180 0183 0184

0185 0187 0189 0190 0196 0199 0200 0203 0204 0208 0210

0211 0212 0216 0218 0219 0220 0226 0227 0234 0235 0236

0239 0243 0244 0247 0249 0250 0255 0256 0259 0261 0265

0274 0277 0289 0292 0299 0302 0304

001

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SERVICE BULLETIN

(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

MATERIAL QTY PER A/C SEE NOTES

Reidentified part set REIDA01 1

B. CONCURRENT REQUIREMENTS

None

C. REASON

(1) History

A specific failure case of the Trimmable Horizontal Stabilizer Actuator (THSA) upper

primary attachment, which may result in a loading of the upper secondary attachment,

has been identified by analysis. Primary load path failure can be caused by bearing

migration from the upper attachment gimbal by failure or loss of a retention bolt.

When engaged the secondary attachment will only withstand the loads for a limited

period of time.

(2) Objective/Action

This Service Bulletin is issued to advise all operators of A300 aircraft of the issue of the

GOODRICH Service Bulletin No. 723-27-1168.

This Service Bulletin details installation of three secondary retention plates for the gimbal

bearings on the THSA upper primary attachment.

(3) Advantages

Accomplishment of this Service Bulletin will prevent upper attachment bearing migration

and subsequent primary load path failure.

(4) Operational/Maintenance Consequences

None

D. DESCRIPTION

To accomplish this Service Bulletin it is necessary to :

Task 270204-831-801-001: Modification of the THSA Upper Attachment.

(1) Modify the Upper Attachment of the THS Actuator.

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SERVICE BULLETIN

E. COMPLIANCE

(1) Classification

MANDATORY: Service Bulletin must be accomplished.

(2) Accomplishment Timescale

Accomplishment of this Service Bulletin is requested within 30 months from original

issue date of the SB.

Accomplishment of this Service Bulletin is expected to be rendered mandatory by the

issue of an Airworthiness Directive (AD) published by the European Aviation Safety

Agency (EASA). It is anticipated that the AD will confirm the (thresholds and/or intervals

and/or date) given above but reference should be made to the AD for confirmation of the

mandated accomplishment timescale.

F. APPROVAL

The technical content of this document is approved under the authority of Design

Organisation Approval No. EASA.21J.031.

If an aircraft listed in the effectivity has a modification or repair embodied that is not of

AIRBUS origin, and which affects the content of this Service Bulletin, the operator is

responsible for obtaining approval by its airworthiness authority for any adaptation necessary

before incorporation of the Service Bulletin.

G. MANPOWER

The manpower estimates given in this Service Bulletin are based on the direct labor cost to

do the work. These estimates assume that the work will be done by experienced personnel,

and may need to be revised upwards to suit operator’s circumstances. The estimates do not

include the time to prepare, plan or inspect the work. Manufacture and procurement of parts

and tools, drying times for paints, sealants, etc., and general administration work are also not

included.

Task 270204-831-801-001: Modification of the THSA Upper Attachment.

Get Access 0.50

Tests 0.50

Close-Up 0.50

TOTAL MANHOURS 1.50

ELAPSED TIME (HOURS) 1.50

Additional manhours related to Vendor SB; refer to:

Modify the Upper Attachment of the THS Actuator. GOODRICH Service Bulletin No.

723-27-1168

DATE: Mar 11/11 SERVICE BULLETIN No.: A300-27-0204

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SERVICE BULLETIN

H. WEIGHT AND BALANCE

The weight and balance estimates given in this Service Bulletin are based on the

Manufacturer’s Empty Weight (MEW) and do not include operator item’s. For the definition of

MEW and operator’s items refer to Weight and Balance Manual (WBM) Chapter 1-00-07.

Manufacturers Empty Weight +0.400 KG (+0.8818 LB)

Effect on Balance +21.800 KGM (+157.679 LB.FT )

I. ELECTRICAL LOAD DATA

Not Changed

J. REFERENCES

Aircraft Maintenance Manual (AMM) 24-00-00 24-50-10 24-50-20

27-41-00 27-42-11

ATA Common Support Data Dictionary (CSDD),

Chapter 2

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

Vendor Service Bulletin (VSB) GOODRICH Service Bulletin No.

723-27-1168

Weight and Balance Manual (WBM) Weight and Balance Manual

(WBM) Chapter 1-00-07

K. PUBLICATION AFFECTED

Aircraft Maintenance Manual (AMM) 27-42-11

Illustrated Parts Catalog (IPC) 27-41-04

L. INTERCHANGEABILITY/MIXABILITY

DESCRIPTION OLD PART N ̊ NEW PART N ̊ INT MIXABILITY SEE

NOTES

THS-Actuator CHA723-XXX CHA723-XXXR 01 Not

Applicable

(1) (2)

NOTE: For definitions of interchangeability codes in column INT., refer to ATA

Common Support Data Dictionary (CSDD), Chapter 2.

NOTE (1): Pre-mod PNs can be installed in place of post-mod PNs provided that the

compliance date of the AD that will be issued to mandate the post-mod PNs is

not reached.

NOTE (2): Refer to the GOODRICH Service Bulletin No. 723-27-1168 for the complete

PN definition of the THS Actuator.

M. SPARES

THS-Actuator CHA723-XXX

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SERVICE BULLETIN

This Page Intentionally Left Blank

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SERVICE BULLETIN

2. MATERIAL INFORMATION

**CONF ALL

A. MATERIAL - PRICE AND AVAILABILITY

(1) Procurement Addresses

Vendor parts are to be procured from GOODRICH as per instructions given in

GOODRICH Service Bulletin No. 723-27-1168.

(2) Price and Availability

Refer to the GOODRICH Service Bulletin No. 723-27-1168.

B. INDUSTRY SUPPORT INFORMATION

Refer to the Vendor Service Bulletin (VSB) for the industry support terms.

C. LIST OF COMPONENTS

No Kit

D. LIST OF MATERIALS - OPERATOR SUPPLIED

(1) Consumable Materials

Refer to the GOODRICH Service Bulletin No. 723-27-1168.

(2) Components

Refer to the GOODRICH Service Bulletin No. 723-27-1168.

(3) Equipment

None

E. PARTS TO BE RE-IDENTIFIED BY OPERATOR

Refer to the GOODRICH Service Bulletin No. 723-27-1168.

Reidentified part set REIDA01

ITEM NEW PART N ̊ KEYWORD ITEM OLD PART N ̊ SEE

NOTES

CHA723-XXXR ACTUATOR CHA723-XXX

F. TOOLING

(1) Tooling - Price and Availability

To accomplish this Service Bulletin, it is necessary to use the tools listened in the

GOODRICH Service Bulletin No. 723-27-1168.

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SERVICE BULLETIN

(2) Tools

To accomplish this Service Bulletin, it is necessary to use the tools listened in the AMM

27-42-11, Page Block 401.

(3) Special Tools

None

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SERVICE BULLETIN

3. ACCOMPLISHMENT INSTRUCTIONS

Task 270204-831-801-001 - Modification of the THSA Upper Attachment.

WARNING: MAKE SURE THAT YOU OBEY ALL THE WARNINGS AND 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.

IF THERE IS CONTAMINATION, (REFER TO ESPM 20-55-00).

Task Associated Data

Manpower

TOTAL MANHOURS 1.50

ELAPSED TIME (HOURS) 1.50

Additional manhours related to Vendor SB; refer to:

GOODRICH Service Bulletin No. 723-27-1168

A. GENERAL

(1) Subtask 270204-839-001-001 - Administrative

Manpower Resources

Skills NON SPECIFIC

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

Service Bulletin.

B. PREPARATION

(1) Subtask 270204-941-001-001 - Job Set-up

Manpower Resources

Skills NON SPECIFIC

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SERVICE BULLETIN

References

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

27-42-11, Page Block 401

CAUTION: CAUTIONS MUST BE OBSERVED FOR THS ACTUATOR MANUAL

ACTUATION.

(a) Make sure that the aircraft is electrically grounded (Refer to AMM 24-00-00, Page

Block 301).

(b) Do the job set-up procedure as specified in the removal/installation of the THS

Actuator (Refer to AMM 27-42-11, Page Block 401).

C. PROCEDURE

(1) Subtask 270204-831-001-001 - Modify the Upper Attachment of the THS Actuator.

Material necessary to do the job

Reidentified part set REIDA01

ITEM NEW PART N ̊ KEYWORD ITEM OLD PART N ̊ SEE

NOTES

CHA723-XXXR ACTUATOR CHA723-XXX

References

Vendor Service Bulletin (VSB) GOODRICH 723-27-1168

(a) Follow the instructions given in the Vendor Service Bulletin to modify the THS

Actuator (Refer to GOODRICH Service Bulletin No. 723-27-1168).

(b) After the modification :

1 THS-Actuator CHA723-XXX

Becomes

1 THS-Actuator CHA723-XXXR

NOTE: Refer to the GOODRICH Service Bulletin No. 723-27-1168 for the

complete PN definition of the THS Actuator.

(c) Remove warning notice prohibiting operation of pitch controls and repressurization

of the hydraulic systems.

D. TEST

(1) Subtask 270204-865-002-001 - C/B Closing

Manpower Resources

Skills NON SPECIFIC

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SERVICE BULLETIN

References

Aircraft Maintenance Manual (AMM) 24-50-10, Page Block 001

24-50-20, Page Block 001

(a) Following aircraft configuration, remove the safety clips and tags and close these

circuit breakers :

PANEL DESIGNATION FIN LOCATION SEE

NOTES

21VU PITCH TRIM 1/PWR

SUPPLY/28VDC

13CC1 (01)

21VU PITCH TRIM 1/PWR

SUPPLY/115VAC

14CC1 (01)

21VU PITCH TRIM 1/26VAC 15CC1 (01)

21VU PITCH TRIM 2/PWR

SUPPLY/28VDC

13CC2 (01)

21VU PITCH TRIM 2/PWR

SUPPLY/115VAC

14CC2 (01)

21VU PITCH TRIM 2/26VAC 15CC2 (01)

21VU STALL COMPUT/ALPHA

TRIM PROBE/26VAC

29CC (01)

21VU STALL COMPUT/ALPHA

TRIM PROBE/115VAC

28CC (01)

21VU BITE 1WB (01)

127VU FLT CONTRL/SERVO

CONTRL/LEVER LOCK

44GP (01)

127VU FLT CONTRL/SERVO

CONTRL/ELEC VALVES

1GP (01)

127VU FLT CONTRL/SERVO

CONTRL/JAM WARNS

2GP (01)

127VU FLT CONTRL/TAIL

MOTOR/TEST

1CB (01)

NOTE (01): For the location of the circuit breakers refer to AMM 24-50-10, Page

Block 001 and AMM 24-50-20, Page Block 001.

Or

PANEL DESIGNATION FIN LOCATION SEE

NOTES

21VU FAC 1/28VDC 306CC1 (01)

21VU FAC 1/115VAC 309CC1 (01)

21VU FAC 1/26VAC 305CC1 (01)

21VU FAC 2/26VAC 305CC2 (01)

21VU FAC 2/115VAC 309CC2 (01)

21VU FAC 2/28VDC 306CC2 (01)

21VU STALL WARNING/ALPHA

PROBE 3/26VAC

29CC (01)

21VU STALL WARNING/ALPHA

PROBE 3/115VAC

28CC (01)

129VU MAINT PNL/MI & ANN LTS 1WB (01)

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PANEL DESIGNATION FIN LOCATION SEE

NOTES

127VU FLT CTLS/SERVO

CTLS/TEST

44GP (01)

127VU FLT CTLS/SERVO CTLS/HYD

SEL

1GP (01)

127VU FLT CTLS/SERVO

CTLS/CMPTR

2GP (01)

127VU FLT CTLS/TAIL MOT/TEST 1CB (01)

NOTE (01): For the location of the circuit breakers refer to AMM 24-50-10, Page

Block 001 and AMM 24-50-20, Page Block 001.

(2) Subtask 270204-700-001-001 - Testing

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 27-41-00, Page Block 501

(a) Do an operational test of THS control (Refer to AMM 27-41-00, Page Block 501).

E. CLOSE-UP

(1) Subtask 270204-942-001-001 - Close-up

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 27-42-11, Page Block 401

(a) Make sure that the work areas are clean and clear of tools and other items of

equipment.

(b) Do the close-up procedure as specified in the removal/installation of the THS

Actuator (Refer to AMM 27-42-11, Page Block 401).

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

(d) Remove the access platform(s).

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SERVICE BULLETIN

REPORTING SHEET

TITLE: FLIGHT CONTROLS - TRIMMABLE HORIZONTAL STABILIZER (THS) -

IMPROVE THS UPPER ATTACHMENT FITTING.

MODIFICATION No.: 13426S22775

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: Mar 11/11 SERVICE BULLETIN No.: A300-27-0204

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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 4 3 2 1

- Quality rating of the Accomplishment Instructions 4 3 2 1

- Quality rating of the Illustrations 4 3 2 1

- 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: Mar 11/11 SERVICE BULLETIN No.: A300-27-0204

REVISION No.: 00 - Mar 11/11 Page: 1

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