@A300-600

SERVICE BULLETIN

SUMMARY

AIRBUS

CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC CEDEX

FRANCE

Tel : (33) 5 61 93 33 33

Telex : AIRBU 530526F

Fax : (33) 5 61 93 42 51

This summary is for information only and is not approved for modification of the aircraft.

MANDATORY MANDATORY MANDATORY

ATA SYSTEM: 27

TITLE: FLIGHT CONTROLS - HORIZONTAL STABILIZER ACTUATOR -

INSPECTION OF HSA NO BACK BRAKE DISKS

**CONF ALL

MODIFICATIONS

None

REASON/DESCRIPTION/OPERATIONAL CONSEQUENCES

During endurance qualification tests on other AIRBUS Program Trimmable Horizontal Stabiliser Actuator

(THSA), a partial loss of No-Back Brake (NBB) efficiency was identified.

Due to similarity of design, same tests were initiated by the supplier UTAS on the Wide Body HSA

sampled from the field. Subject tests confirmed that the A300-600, A300F4-608ST and A310 HSA Part

Numbers 47142-403, 47142-413, 47142-414 and 47142-423 are also affected by this partial loss of

NBB efficiency.

Investigations have identified that a polishing and an auto-contamination by carbon particles of the

carbon friction disk surface are at the origin of this issue. This auto-contamination leads to a partial loss

of the carbon friction disks efficiency.

The partial loss of the NBB efficiency is not detectable by aircraft systems. In case of power gear train

not able to keep the ball screw in its last commended position, the loss of NBB efficiency can potentially

lead to an uncommanded movement of the THS under specific aerodynamic loads.

The phenomenon of polishing and auto-contamination of the carbon friction disks is confirmed to be an

ageing / endurance issue.

A new hard limit of the NBB carbon disks leading to HSA periodic maintenance is set to 14600 flight

cycles.

This Inspection Service Bulletin (ISB) requires to:

- check the HSA PN/SN,

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 1

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SERVICE BULLETIN

SUMMARY

- determine HSA current time from first installation on aeroplane and relevant FC and FH or last

NBB disks replacement whichever is later,

- check subject data against the compliance time for NBB disks replacement published through this

ISB,

- schedule the appropriate time frame for HSA removal and replacement by a serviceable unit.

After installation of serviceable HSA, operator must repeat the inspection in order to plan the next HSA

NBB disks replacement.

NOTE: In the case the in-service history of the HSA is not known or partially missing, the

operator shall refer to the SIL 05-008 for estimation of FC and FH. The use of

conclusive maintenance records is allowed to positively determine the HSA in-service

history.

Accomplishment of this Service Bulletin permits scheduling the next HSA maintenance for NBB disks

replacement.

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

COST SAVING NO ETOPS 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) :

06P 67Q ABR AHK BCS F2I FDX IRA IRM KAC MNB MRJ MSR

SUD TAR THA UPS UQA URS UTP UZB

CONCURRENT REQUIREMENTS

None

REFERENCES / REPERCUSSIONS

TFU 27.44.00.014

OEB None

AOT None

SIL 05-008

LINE MAINTENANCE AFFECTED No

LIFE LIMIT YES

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SERVICE BULLETIN

SUMMARY

OTHER OIT 999.0075/13

NATURE OF THE WORK

AIRCRAFT YES

EQUIPMENT YES

HARD NO

SOFT NO

OBRM NO

MANPOWER

Task 276070-832-801-001: General Visual Inspection of the Horizontal Stabilizer Actuator (HSA)

(FIN 35CB)

TOTAL MANHOURS 2.50

ELAPSED TIME (HOURS) 2.50

Task 276070-833-801-001: Repair

TOTAL MANHOURS 24.00

ELAPSED TIME (HOURS) 12.00

APPENDICES

None

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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@A300-600

SERVICE BULLETIN

SUMMARY

**CONF ALL

A FR87

FR80

B

Z310

HORIZONTAL

B

312AR

A

STABILIZER

ACTUATOR (HSA)

TO BE INSPECTED

35CB

D_SB_276070_5_SAAA_01_00

Figure A-FSAAA - Sheet 01

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 4

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@A300-600

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 - HORIZONTAL STABILIZER ACTUATOR -

INSPECTION OF HSA NO BACK BRAKE DISKS

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

NOTE: This Service Bulletin is only applicable to HSA PN 47142-403, PN 47142-413,

PN 47142-414 and PN 47142-423.

(1) Models

B4-603 B4-605R B4-620 B4-622 B4-622R C4-605R/F C4-620 F4-605R

F4-622R

(2) Effectivity by MSN

0294 0344 0358 0361 0365 0380 0388 0401 0405 0408 0411 0414 0417 0477 0479

0505 0521 0525 0529-0530 0532 0536 0543 0546 0553 0555 0557-0559 0561 0563

0572 0575 0579 0581 0584 0602-0603 0607-0608 0611 0613 0617-0618 0621 0623

0625-0626 0629-0630 0632-0633 0637 0641 0643 0657 0659 0664 0666 0668 0670

0673 0677 0679 0683 0688 0694 0696 0699 0701 0703 0707 0709 0711 0713 0715

0717 0719 0721-0730 0732-0746 0748-0750 0752-0764 0766 0768-0775 0777-0794

0797 0799-0840 0845-0878

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SERVICE BULLETIN

(3) Effectivity by Operator

The Operator/MSN relationship is provided for information only and is correct at the time

of issue in accordance with the information available to AIRBUS. Any future changes

resulting from transfer of an aircraft from one operator to another will not be reflected in

this list unless the Service Bulletin is revised for another reason.

OPERATOR MSN

06P 0788

67Q 0584 0603 0744 0749 0764

ABR 0677 0743

AHK 0683 0770 0855 0856 0857 0858 0859 0860 0870 0871

BCS 0529 0557 0602 0617 0621 0637 0641 0670 0679 0703 0711 0724

0729 0730 0737 0740 0753 0783 0797 0836 0837 0872

F2I 0294

FDX 0358 0361 0365 0388 0417 0477 0479 0530 0536 0543 0555 0559

0572 0575 0579 0581 0611 0613 0625 0630 0633 0657 0659 0664

0668 0688 0709 0713 0715 0726 0728 0735 0736 0738 0742 0745

0748 0752 0757 0759 0760 0761 0766 0768 0769 0771 0772 0774

0777 0778 0779 0780 0781 0789 0790 0791 0792 0793 0794 0799

0800 0801 0802 0803 0804 0873 0874 0875 0876 0877 0878

IRA 0632 0696 0723 0727

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

0773 0838

KAC 0344 0673 0694 0699 0719 0721

MNB 0521 0525 0532 0734 0739 0755 0756 0758

MRJ 0750 0762

MSR 0561 0607

SUD 0666 0775

TAR 0505 0558 0563

THA 0629 0782 0784 0785 0786 0787

UPS 0805 0806 0807 0808 0809 0810 0811 0812 0813 0814 0815 0816

0817 0818 0819 0820 0821 0822 0823 0824 0825 0826 0827 0828

0829 0830 0831 0832 0833 0834 0835 0839 0840 0845 0846 0847

0848 0849 0850 0851 0852 0853 0854 0861 0862 0863 0864 0865

0866 0867 0868 0869

UQA 0626 0643

URS 0733

UTP 0707 0725 0732 0741 0746 0754 0763

UZB 0717 0722

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@A300-600

SERVICE BULLETIN

(4) Configuration by MSN

MSN CONFIGURATION

0294 0344 0358 0361 0365 0380 0388 0401 0405 0408 0411

0414 0417 0477 0479 0505 0521 0525 0529 0530 0532 0536

0543 0546 0553 0555 0557 0558 0559 0561 0563 0572 0575

0579 0581 0584 0602 0603 0607 0608 0611 0613 0617 0618

0621 0623 0625 0626 0629 0630 0632 0633 0637 0641 0643

0657 0659 0664 0666 0668 0670 0673 0677 0679 0683 0688

0694 0696 0699 0701 0703 0707 0709 0711 0713 0715 0717

0719 0721 0722 0723 0724 0725 0726 0727 0728 0729 0730

0732 0733 0734 0735 0736 0737 0738 0739 0740 0741 0742

0743 0744 0745 0746 0748 0749 0750 0752 0753 0754 0755

0756 0757 0758 0759 0760 0761 0762 0763 0764 0766 0768

0769 0770 0771 0772 0773 0774 0775 0777 0778 0779 0780

0781 0782 0783 0784 0785 0786 0787 0788 0789 0790 0791

0792 0793 0794 0797 0799 0800 0801 0802 0803 0804 0805

0806 0807 0808 0809 0810 0811 0812 0813 0814 0815 0816

0817 0818 0819 0820 0821 0822 0823 0824 0825 0826 0827

0828 0829 0830 0831 0832 0833 0834 0835 0836 0837 0838

0839 0840 0845 0846 0847 0848 0849 0850 0851 0852 0853

0854 0855 0856 0857 0858 0859 0860 0861 0862 0863 0864

0865 0866 0867 0868 0869 0870 0871 0872 0873 0874 0875

0876 0877 0878

001

(5) Configuration definition

**CONF 001

Config. 001 is valid for all the aircraft given in the effectivity of this Service Bulletin as a

standard configuration.

(6) Material Effectivity

No Material Set

B. CONCURRENT REQUIREMENTS

None

C. REASON

(1) History

During endurance qualification tests on other AIRBUS Program Trimmable Horizontal

Stabiliser Actuator (THSA), a partial loss of No-Back Brake (NBB) efficiency was

identified.

Due to similarity of design, same tests were initiated by the supplier UTAS on the

Wide Body HSA sampled from the field. Subject tests confirmed that the A300-600,

A300F4-608ST and A310 HSA Part Numbers 47142-403, 47142-413, 47142-414 and

47142-423 are also affected by this partial loss of NBB efficiency.

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 3

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SERVICE BULLETIN

Investigations have identified that a polishing and an auto-contamination by carbon

particles of the carbon friction disk surface are at the origin of this issue. This autocontamination leads to a partial loss of the carbon friction disks efficiency.

The partial loss of the NBB efficiency is not detectable by aircraft systems. In case of

power gear train not able to keep the ball screw in its last commended position, the loss

of NBB efficiency can potentially lead to an uncommanded movement of the THS under

specific aerodynamic loads.

The phenomenon of polishing and auto-contamination of the carbon friction disks is

confirmed to be an ageing / endurance issue.

A new hard limit of the NBB carbon disks leading to HSA periodic maintenance is set to

14600 flight cycles.

(2) Objective/Action

This Inspection Service Bulletin (ISB) requires to:

- check the HSA PN/SN,

- determine HSA current time from first installation on aeroplane and relevant FC and

FH or last NBB disks replacement whichever is later,

- check subject data against the compliance time for NBB disks replacement

published through this ISB,

- schedule the appropriate time frame for HSA removal and replacement by a

serviceable unit.

After installation of serviceable HSA, operator must repeat the inspection in order to plan

the next HSA NBB disks replacement.

NOTE: In the case the in-service history of the HSA is not known or partially

missing, the operator shall refer to the SIL 05-008 for estimation of

FC and FH. The use of conclusive maintenance records is allowed to

positively determine the HSA in-service history.

(3) Advantages

Accomplishment of this Service Bulletin permits scheduling the next HSA maintenance

for NBB disks replacement.

(4) Operational/Maintenance Consequences

None

D. DESCRIPTION

To accomplish this Service Bulletin it is necessary to :

Task 276070-832-801-001: General Visual Inspection of the Horizontal Stabilizer Actuator

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 4

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SERVICE BULLETIN

(HSA) (FIN 35CB)

(1) Plan HSA Maintenance (FIN 35CB)

Task 276070-833-801-001: Repair

(1) Depending on Inspection Results, Install a Serviceable HSA

E. COMPLIANCE

(1) Classification

MANDATORY: Service Bulletin must be accomplished.

(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,

intervals and dates given but reference should be made to the AD for confirmation of the

mandated accomplishment timescale.

Table 1, Config. 001 - General Visual Inspection of the Horizontal Stabilizer Actuator (HSA) (FIN

35CB)

Condition Action Compliance Time

Threshold Grace period

Repetitive

interval

All Aircraft Inspect the HSA

Part Number (PN)

and Serial Number

(SN) (FIN 35CB) in

accordance with

TASK

276070-832-801 001

30 days from the

issuance of this

Inspection Service

Bulletin (ISB)

None None

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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SERVICE BULLETIN

Table 1, Config. 001 - General Visual Inspection of the Horizontal Stabilizer Actuator (HSA) (FIN

35CB)

Condition Action Compliance Time

Threshold Grace period

Repetitive

interval

Plan the next HSA

replacement for NoBack Brake (NBB)

disk replacement in

accordance with

SUBTASK

276070-210-001 001

And

Replace the HSA by

a serviceable one in

accordance with

TASK

276070-833-801 001

See NOTE (*)

And

14600 Flight

Cycles (FC)

accumulated by

HSA from last

NBB disks

replacement or

since EIS when

NBB disks have

never been

replaced

- From Feb 01/16, operation

of HSA with NBB disks

having accumulated more

than 30000 FC since first

installation on an aircraft,

or since last NBB disks

replacement, whichever is

later, is not allowed

- From Feb 01/17, operation

of HSA with NBB disks

having accumulated more

than 20000 FC and less

than 30000 FC since first

installation on an aircraft,

or since last NBB disks

replacement, whichever is

later, is not allowed

- From Feb 01/19, operation

of HSA with NBB disks

having accumulated more

than 14600 FC since first

installation on an aircraft,

or since last NBB disks

replacement, whichever is

later, is not allowed

HSA in- None

service

history

available

Repeat the

inspection of the

HSA in accordance

with TASK

276070-832-801 001

None None At each HSA

replacement

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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SERVICE BULLETIN

Table 1, Config. 001 - General Visual Inspection of the Horizontal Stabilizer Actuator (HSA) (FIN

35CB)

Condition Action Compliance Time

Threshold Grace period

Repetitive

interval

Estimate HSA FC

and Flight Hours

(FH) (FIN 35CB) in

accordance with

SUBTASK

276070-210-001 001

Before next flight None None

Plan the next HSA

replacement for NoBack Brake (NBB)

disk replacement in

accordance with

SUBTASK

276070-210-001 001

And

Replace the HSA by

a serviceable one in

accordance with

TASK

276070-833-801 001

See NOTE (*)

14600 Flight

Cycles (FC)

accumulated by

HSA from last

NBB disks

replacement or

since EIS when

NBB disks have

never been

replaced

- From Feb 01/16, operation

of HSA with NBB disks

having accumulated more

than 30000 FC since first

installation on an aircraft,

or since last NBB disks

replacement, whichever is

later, is not allowed

- From Feb 01/17, operation

of HSA with NBB disks

having accumulated more

than 20000 FC and less

than 30000 FC since first

installation on an aircraft,

or since last NBB disks

replacement, whichever is

later, is not allowed

- From Feb 01/19, operation

of HSA with NBB disks

having accumulated more

than 14600 FC since first

installation on an aircraft,

or since last NBB disks

replacement, whichever is

later, is not allowed

None

HSA inservice

history not

available

Repeat the

inspection of the

HSA in accordance

with TASK

276070-832-801 001

None None At each HSA

replacement

NOTE (*): A serviceable HSA is a HSA whose NBB disks have not exceeded the limits identified in

this ISB, since first installation on an aircraft or since last NBB disks replacement whichever is later.

F. APPROVAL

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

Organisation Approval No. EASA.21J.031.

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SERVICE BULLETIN

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 276070-832-801-001: General Visual Inspection of the Horizontal Stabilizer Actuator (HSA)

(FIN 35CB)

Get Access 1.00

On Aircraft

Plan HSA Maintenance (FIN 35CB) 0.50

Close-Up 1.00

TOTAL MANHOURS 2.50

ELAPSED TIME (HOURS) 2.50

Task 276070-833-801-001: Repair

Get Access 2.00

On Aircraft

Depending on Inspection Results, Install a Serviceable

HSA

18.00

Tests 2.00

Close-Up 2.00

TOTAL MANHOURS 24.00

ELAPSED TIME (HOURS) 12.00

NOTE: The minimum manhours necessary to accomplish this Service Bulletin are

those for the Inspection. Depending on the inspection result, additional

manhours can apply.

H. WEIGHT AND BALANCE

Not Changed

I. ELECTRICAL LOAD DATA

Not Changed

J. REFERENCES

Aircraft Maintenance Manual (AMM) 06-21-00 06-31-53 24-00-00

27-44-11

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

Service Information Letter (SIL) 05-008

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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Airworthiness Limitation Section (ALS) Part 4

K. PUBLICATION AFFECTED

Impact on scheduled maintenance: Refer to MPD

L. INTERCHANGEABILITY/MIXABILITY

Not Applicable

M. SPARES

None

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This Page Intentionally Left Blank

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2. MATERIAL INFORMATION

**CONF ALL

A. MATERIAL - PRICE AND AVAILABILITY

(1) Procurement Addresses

None

(2) Price and Availability

None

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

None

(2) Components

NOTE: To accomplish this Service Bulletin it is necessary to use the expendable

parts listed in the subsequent referenced AMM task:

- refer to AMM 27-44-11, Page Block 401.

(3) Equipment

None

E. PARTS TO BE RE-IDENTIFIED BY OPERATOR

None

F. TOOLING

(1) Tooling - Price and Availability

None

(2) Tools

NOTE: To accomplish this Service Bulletin it is necessary to use the tools listed

in the subsequent referenced AMM task:

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SERVICE BULLETIN

- refer to AMM 27-44-11, Page Block 401.

(3) Special Tools

None

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SERVICE BULLETIN

3. ACCOMPLISHMENT INSTRUCTIONS

Task 276070-832-801-001 - General Visual Inspection of the Horizontal Stabilizer Actuator

(HSA) (FIN 35CB)

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.

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

NOTE: The accomplishment instructions of this Service Bulletin include procedures given

in other documents or in other sections of the Service Bulletin. When the words

"refer to" are used and the operator has a procedure accepted by the local

authority he belongs to, the accepted alternative procedure can be used. When the

words "in accordance with" are used then the given procedure must be followed.

NOTE: The access and close-up instructions, not comprising return to service tests, in this

Service Bulletin do not constitute or affect the technical intent of the Service

Bulletin. Operators can therefore, as deemed necessary, omit or add access and/or

close-up steps to add flexibility to their maintenance operations as long as the

technical intent of the Service Bulletin is met within the set parameters.

NOTE: Manual titles given in the accomplishment instructions are referred to by acronyms.

Refer to paragraph 1.J., References, for the definition of acronyms.

NOTE: The purpose of flow charts is to supplement the information given in the Procedure

and Compliance paragraphs and not to serve as the primary source for tasks or

compliance times given in this Service Bulletin.

NOTE: This Service Bulletin is classified mandatory or expected to be classified mandatory

by an Airworthiness Directive (AD). The paragraphs 3.C. and 3.D. in these

accomplishment instructions are Required for Compliance (RC) and must be done

to comply with the AD. Other paragraphs are recommended and may be deviated

from, done as part of other actions or done with accepted methods different from

those given in the Service Bulletin, as long as the RC paragraphs can be done and

the aircraft can be put back into a serviceable condition.

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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Task Associated Data

Zone

312

Access

Door 312AR

Manpower

TOTAL MANHOURS 2.50

ELAPSED TIME (HOURS) 2.50

A. GENERAL

(1) Subtask 276070-910-001-001 - Standard Practices

Manpower Resources

Skills NON SPECIFIC

References

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

06-31-53, Page Block 001

(a) For the Frame (FR) identification, refer to AMM 06-31-53, Page Block 001.

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

(2) Subtask 276070-839-001-001 - 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 276070-941-001-001 - Job Set-up

Manpower Resources

Skills NON SPECIFIC

References

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

NOTE: There are two procedures for the HSA PN and SN identification:

- check the HSA PN and/or SN in the aircraft maintenance records,

- or check the HSA PN and/or SN on aircraft (if PN or SN are not

known).

NOTE: Do this preparation procedure, only if you check the HSA PN and/or SN

on aircraft.

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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NOTE: The items given in this note shall be considered as the basic Aircraft

configuration before you start a maintenance task:

- Aircraft on the ground resting on landing gear (the ground safety

locks and the wheel chocks are in position on the landing gear)

- Engine shut down, thrust reversers closed and locked

- Aircraft in clean configuration

- Parking brake applied

- Aircraft electrical network de-energized

- Hydraulic systems depressurized

- Access to the cockpit and cabin is available

- All circuit breakers are in closed position

- All controls in NORM, AUTO or OFF position

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

Block 301.

(b) Put an access platform in position at Zone 312.

(c) Open the access door 312AR.

(d) Put the warning notices in position in the flight compartment to tell persons not to

operate the pitch controls.

C. PROCEDURE

(1) Subtask 276070-210-001-001 - Plan HSA Maintenance (FIN 35CB)

Work Zones and Access Panels

Zone Access/Work location

312 Access Door 312AR

Manpower Resources

Manhours 0.50

Minimum number of person 1

Subtask elapsed time 0.50

Skills AIRFRAME

References

Service Information Letter (SIL) 05-008

Fig. A-FBAAA

Area to be inspected

Sheet 01

Fig. A-FFAAA

Flow Chart

Sheet 01

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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(a) At the threshold given in PLANNING INFORMATION paragraph E.(2):

Inspect the HSA PN and SN in maintenance records (no need of SUBTASK

276070-941-001 001 Job Set-up ):

Refer to Fig. A-FFAAA

Refer to Fig. A-FBAAA

1 If the PN and SN are known:

a If the HSA in-service history is available and HSA is serviceable:

<1> Plan the HSA replacement for NBB disks replacement to be

compliant with the following requirements:

- From Feb 01/16, operation of HSA with NBB disks having

accumulated more than 30000 FC since first installation on an

aircraft, or since last NBB disks replacement, whichever is later,

is not allowed.

- From Feb 01/17, operation of HSA with NBB disks having

accumulated more than 20000 FC and less than 30000 FC

since first installation on an aircraft, or since last NBB disks

replacement, whichever is later, is not allowed.

- From Feb 01/19, operation of HSA with NBB disks having

accumulated more than 14600 FC since first installation on an

aircraft, or since last NBB disks replacement, whichever is later,

is not allowed.

<2> Within the above compliance times, replace the HSA by a

serviceable one, in accordance with TASK 276070-833-801 001

Repair .

NOTE: A serviceable HSA is a HSA whose NBB disks have

not exceeded the limits identified in this ISB, since

first installation on an aircraft or since last NBB disks

replacement whichever is later.

<3> Repeat the inspection at the interval given in the PLANNING

INFORMATION paragraph 1 E.(2), in accordance with TASK

276070-832-801 001 General Visual Inspection of the Horizontal

Stabilizer Actuator (HSA) (FIN 35CB) .

b If the HSA in service history is available and HSA is not serviceable:

<1> Replace the HSA by a serviceable one before next flight, in

accordance with TASK 276070-833-801 001 Repair .

NOTE: A serviceable HSA is a HSA having a PN 47142-

XXX and whose NBB disks have not exceeded the

limits identified in this ISB, since first installation on

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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SERVICE BULLETIN

an aircraft or last NBB disks replacement, whichever

is later.

<2> Repeat the inspection at the interval given in the PLANNING

INFORMATION paragraph 1 E.(2), in accordance with TASK

276070-832-801 001 General Visual Inspection of the Horizontal

Stabilizer Actuator (HSA) (FIN 35CB) .

c If the HSA in-service history is not available:

<1> Estimate HSA FC and FH in accordance with SIL 05-008:

<a> If the HSA is serviceable:

[1] Plan the HSA replacement for NBB disks replacement to

be compliant with the following requirements:

- From Feb 01/16, operation of HSA with NBB disks

having accumulated more than 30000 FC since first

installation on an aircraft or since last NBB disks

replacement, whichever is later.

- From Feb 01/17, operation of HSA with NBB disks

having accumulated more than 20000 FC and less

than 30000 FC since first installation on an aircraft or

since last NBB disks replacement, whichever is later.

- From Feb 01/19, operation of HSA with NBB disks

having accumulated more than 14600 FC since first

installation on an aircraft or since last NBB disks

replacement, whichever is later.

[2] Within the above compliance times, replace the HSA

by a serviceable one, in accordance with TASK

276070-833-801 001 Repair .

NOTE: A serviceable HSA is a HSA having a PN

47142-XXX and whose NBB disks have

not exceeded the limits identified in this

ISB, since first installation on an aircraft or

last NBB disks replacement, whichever is

later.

[3] Repeat the inspection at the interval given in the

PLANNING INFORMATION paragraph 1 E.(2), in

accordance with TASK 276070-832-801 001 General

Visual Inspection of the Horizontal Stabilizer Actuator

(HSA) (FIN 35CB) .

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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SERVICE BULLETIN

<b> If the HSA is not serviceable:

[1] Replace the HSA by a serviceable one before next flight,

in accordance with TASK 276070-833-801 001 Repair .

NOTE: A serviceable HSA is a HSA having a PN

47142-XXX and whose NBB disks have

not exceeded the limits identified in this

ISB, since first installation on an aircraft or

last NBB disks replacement, whichever is

later.

[2] Repeat the inspection at the interval given in the

PLANNING INFORMATION paragraph 1 E.(2), in

accordance with TASK 276070-832-801 001 General

Visual Inspection of the Horizontal Stabilizer Actuator

(HSA) (FIN 35CB) .

D. TEST

None

E. CLOSE-UP

(1) Subtask 276070-942-001-001 - Close-up

Manpower Resources

Skills NON SPECIFIC

NOTE: If you intend to accomplish an associated Repair Task during the same

layover period, the subsequent Close-up procedure is not necessary.

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

equipment.

(b) Remove the warning notices from the flight compartment.

(c) Close the access door 312AR.

(d) Remove the access platform(s).

(e) Put the aircraft back to its initial configuration.

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 18

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SERVICE BULLETIN

Task 276070-833-801-001 - Repair

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.

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

NOTE: The accomplishment instructions of this Service Bulletin include procedures given

in other documents or in other sections of the Service Bulletin. When the words

"refer to" are used and the operator has a procedure accepted by the local

authority he belongs to, the accepted alternative procedure can be used. When the

words "in accordance with" are used then the given procedure must be followed.

NOTE: The access and close-up instructions, not comprising return to service tests, in this

Service Bulletin do not constitute or affect the technical intent of the Service

Bulletin. Operators can therefore, as deemed necessary, omit or add access and/or

close-up steps to add flexibility to their maintenance operations as long as the

technical intent of the Service Bulletin is met within the set parameters.

NOTE: Manual titles given in the accomplishment instructions are referred to by acronyms.

Refer to paragraph 1.J., References, for the definition of acronyms.

NOTE: This Service Bulletin is classified mandatory or expected to be classified mandatory

by an Airworthiness Directive (AD). The paragraphs 3.C. and 3.D. in these

accomplishment instructions are Required for Compliance (RC) and must be done

to comply with the AD. Other paragraphs are recommended and may be deviated

from, done as part of other actions or done with accepted methods different from

those given in the Service Bulletin, as long as the RC paragraphs can be done and

the aircraft can be put back into a serviceable condition.

Task Associated Data

Zone

312

Modified FIN

35CB

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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SERVICE BULLETIN

Access

Door 312AR

Manpower

TOTAL MANHOURS 24.00

ELAPSED TIME (HOURS) 12.00

A. GENERAL

(1) Subtask 276070-910-002-001 - Standard Practices

Manpower Resources

Skills NON SPECIFIC

References

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

06-31-53, Page Block 001

(a) For the Frame (FR) identification, refer to AMM 06-31-53, Page Block 001.

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

(2) Subtask 276070-839-002-001 - 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 276070-941-002-001 - Job Set-up

Manpower Resources

Skills NON SPECIFIC

References

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

27-44-11, Page Block 401

NOTE: If you intend to accomplish this Repair Task during the same layover

period as the associated Inspection, the subsequent Preparation

procedure is not necessary except the Job Set-up procedure as specified

in the removal of the HSA (FIN 35CB), refer to AMM 27-44-11, Page

Block 401.

NOTE: The items given in this note shall be considered as the basic Aircraft

configuration before you start a maintenance task:

- Aircraft on the ground resting on landing gear (the ground safety

locks and the wheel chocks are in position on the landing gear)

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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- Engine shut down, thrust reversers closed and locked

- Aircraft in clean configuration

- Parking brake applied

- Aircraft electrical network de-energized

- Hydraulic systems depressurized

- Access to the cockpit and cabin is available

- All circuit breakers are in closed position

- All controls in NORM, AUTO or OFF position

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

Block 301.

(b) Put an access platform in position at Zone 312.

(c) Open the access door 312AR.

(d) Put the warning notices in position in the flight compartment to tell persons not to

operate the pitch controls.

(e) Do the Job Set-up procedure as specified in the removal of the HSA (FIN 35CB),

refer to AMM 27-44-11, Page Block 401.

C. PROCEDURE

(1) Subtask 276070-900-001-001 - Depending on Inspection Results, Install a

Serviceable HSA

Work Zones and Access Panels

Zone Access/Work location

312 Access Door 312AR

Manpower Resources

Manhours 18.00

Minimum number of person 2

Subtask elapsed time 9.00

Skills AIRFRAME

References

Aircraft Maintenance Manual (AMM) 27-44-11, Page Block 401

(a) Remove the HSA:

Refer to AMM 27-44-11, Page Block 401

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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SERVICE BULLETIN

FIN 35CB

1 HSA 47142-403

Or

FIN 35CB

1 HSA 47142-413

Or

FIN 35CB

1 HSA 47142-414

Or

FIN 35CB

1 HSA 47142-423

(b) Install a serviceable HSA, FIN 35CB, refer to AMM 27-44-11, Page Block 401.

NOTE: A serviceable HSA is a HSA whose NBB disks have not exceeded

the limits identified in this ISB, since first installation on an aircraft

or since last NBB disks replacement whichever is later.

D. TEST

(1) Subtask 276070-700-002-001 - Testing

Manpower Resources

Skills NON SPECIFIC

References

Aircraft Maintenance Manual (AMM) 27-44-11, Page Block 401

(a) Job Set-up

1 Remove the safety clips and/or tags and close/unlock the circuit breakers as

specified after the installation of the HSA (FIN 35CB), refer to AMM 27-44-11,

Page Block 401.

(b) Procedure

1 Do the test procedure as specified after the installation of the HSA (FIN

35CB), refer to AMM 27-44-11, Page Block 401.

E. CLOSE-UP

(1) Subtask 276070-942-002-001 - Close-up

Manpower Resources

Skills NON SPECIFIC

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

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SERVICE BULLETIN

References

Aircraft Maintenance Manual (AMM) 27-44-11, 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 after the installation of the HSA (FIN

35CB), refer to AMM 27-44-11, Page Block 401.

(c) Remove the warning notices from the flight compartment.

(d) Close the access door 312AR.

(e) Remove the access platform(s).

(f) Put the aircraft back to its initial configuration.

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 23

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SERVICE BULLETIN

**CONF ALL

IN ACCORDANCE WITH TASK 276070−832−801−001

GIVEN IN THE PLANNING INFORMATION PARAGRAPH E.(2)

STABILIZER ACTUATOR (HSA) (FIN 35CB) AT THE THRESHOLD

COMPLIANCE TIMES GIVEN IN THIS SERVICE BULLETIN

AND COMPLIANCE PARAGRAPHS AND NOT TO SERVE AS THE PRIMARY SOURCE FOR TASKS OR

THE PURPOSE OF FLOW CHARTS IS TO SUPPLEMENT THE INFORMATION GIVEN IN THE PROCEDURE

NOTE:

DO A GENERAL VISUAL INSPECTION OF THE HORIZONTAL 

IN ACCORDANCE WITH SUBTASK 276070−210−001−001

PLAN THE NEXT HSA REPLACEMENT FOR NBB DISKS REPLACEMENT 

SUBTASK 276070−833−801−001

INSTALL A SERVICEABLE HSA IN ACCORDANCE WITH

GIVEN IN THE PLANNING INFORMATION PARAGRAPH E.(2)

(IN ACCORDANCE WITH TASK 276070−832−801−001) AT THE INTERVAL 

REPEAT THE INSPECTION

QUESTION ACTION FINDING

REPLACEMENT WHICHEVER IS LATER

IN THIS SERVICE BULLETIN, SINCE FIRST INSTALLATION ON AN AIRCRAFT OR SINCE LAST NBB DISKS

A SERVICEABLE HSA IS A HSA WHOSE NBB DISKS HAVE NOT EXCEEDED THE LIMITS IDENTIFIED

01

02

SUBTASK 276070−210−001−001 

 FLIGHT CYCLES AND FLIGHT HOURS IN ACCORDANCE WITH

01

02

IF HISTORY IS NOT KNOWN ESTIMATE HSA FC AND FH IN ACCORDANCE WITH SIL 05−008

CHECK FOR HSA P/N AND S/N AND CHECK OR ESTIMATE HSA

WITHIN THE COMPLIANCE TIME GIVEN IN THE PLANNING

INFORMATION PARAGRAPH E.(2)

D_SB_276070_5_FAAA_01_04

Figure A-FFAAA - Sheet 01

Flow Chart

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 24

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SERVICE BULLETIN

**CONF ALL

A FR87

FR80

B

Z310

HORIZONTAL

B

312AR

A

STABILIZER

ACTUATOR (HSA)

TO BE INSPECTED

35CB

D_SB_276070_5_BAAA_01_00

Figure A-FBAAA - Sheet 01

Area to be inspected

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 25

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SERVICE BULLETIN

REPORTING SHEET

TITLE: FLIGHT CONTROLS - HORIZONTAL STABILIZER ACTUATOR -

INSPECTION OF HSA NO BACK BRAKE DISKS

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: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 1

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SERVICE BULLETIN

QUALITY PERCEPTION FORM

Use this form to tell us what is your perception of the quality of this Service Bulletin. The reported data

that you provide us will be used to analyse areas of difficulties and to take corrective action to further

improve the quality of our Service Bulletins.

We thank you for the time you have taken in completing this form.

(Please rate on a scale of 1 to 4, with 4 being the highest score)

- Quality rating of this SB 4321

- Quality rating of the Accomplishment Instructions 4321

- Quality rating of the Illustrations 4321

- Is this SB easy to understand ? Y/N

If you have had difficulties in the accomplishment of this SB please quote below the area(s) and give a

short description of the issue.

Planning Material Instructions

X Effectivity X Kit content X Preparation

X Reason X List of Materials Operator Supplied X Mod/Inspection

X Manpower X Industry support X Test

X References X Re-identification X Close-Up

X Publication X Tooling X Illustrations

Comments:

Operator: Date:

Name/Title:

Please return this form to:

AIRBUS

CUSTOMER SERVICES DIRECTORATE

1 Rond Point Maurice Bellonte

31707 BLAGNAC CEDEX FRANCE

Attn : SEM4 Service Bulletins Management

FAX : (33) 5 61 93 42 51

Or via your Resident Customer Support Office.

DATE: Feb 17/15 SERVICE BULLETIN No.: A300-27-6070

REVISION No.: 00 - Feb 17/15 Page: 1

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