This document transmits Revision 3 of Service Bulletin SB-BR700-72-A101523.

NOTE: If any of the previous issues of this Service Bulletin is already

incorporated, no further Operator action is required with this Revision.

This Service Bulletin can be embodied "In Service" or "At Overhaul/Shop Visit".

Document History

Service Bulletin Revision Status

Initial Issue Sep. 5/05

Revision 1 Dec.14/05

Revision 2 Dec.19/13

Service Bulletin Revision 3

Remove Incorporate Reason for change

All pages of the

Service Bulletin.

Pages 1 to 18 of the

Service Bulletin.

To change the Compliance category to

ALERT, to extend the accomplishment

date for the Service Bulletin until

31st January 2016 and to include some

minor editorial changes.

Printed in Great Britain

Dec.10/15

BR700 SERIES PROPULSION SYSTEM SERVICE BULLETIN

ALERT SB−BR700−72−A101523

Transmittal - Page 1 of 1

ALERT

1. Planning Information

A. Effectivity

(1) BR700-710A1-10 Engines.

Prior to Engine Serial Number 11506.

Modules M51-104 and M51-111 (LP Turbine Module).

(2) BR700-710A2-20 Engines.

Prior to Engine Serial Number 12493.

Modules M51-108 and M51-111 (LP Turbine Module).

(3) BR700-710C4-11 Engines.

(a) For engines which have hardware configuration standard 710C4-11

engraved on the engine data plate (Service Bulletin

SB-BR700-72-101466 standard not incorporated).

Prior to Engine Serial Number 15278.

Module M51-112 (LP Turbine Module).

(b) For engines which have hardware configuration standard 710C4-11/10

engraved on the engine data plate (Service Bulletin

SB-BR700-72-101466 standard incorporated).

Prior to Engine Serial Number 15330.

Module M51-112 (LP Turbine Module).

B. Concurrent Requirements

None.

C. Reason

(1) Problem

It is possible for the pawl carrier of the fuel shut-off mechanism to

seize. This is caused by corrosion of the pawl carrier pivot pins.

ENGINE - LOW PRESSURE (LP) TURBINE SHUT-OFF PAWL CARRIER - INTRODUCTION OF FUEL

SHUT-OFF PAWL CARRIER PIVOT PINS MADE FROM A DIFFERENT MATERIAL WITH IMPROVED

CORROSION PROTECTION PROPERTIES

Printed in Great Britain

SB−BR700−72−A101523

Page 1 of 18

Sep. 5/05

Dec.10/15 Revision 3
(2) Evidence

This was identified during engine overhaul.

(3) Substantiation

The changes introduced by this Service Bulletin were the subject of

satisfactory engineering analysis. This Service Bulletin complies with

the applicable engine certification basis.

(4) Objective

Introduction of this Service Bulletin is designed to maintain

reliability.

(5) Effect of Bulletin on:

(a) Operation

Not affected.

(b) Maintenance

Not affected.

(c) Overhaul

Not affected.

(d) Repair Schemes

Not affected.

(e) Interchangeability

Not affected.

(f) Fits and Clearances

Not affected.

R been issued to extend the date in the Revision 2 of this Service Bulletin had

Note of the Compliance, to update the Effectivity and the Accomplishment Form

and to include some minor editorial changes.

Revision 3 of this Service Bulletin has been issued to change the Compliance

category to ALERT, to extend the accomplishment date for the Service Bulletin

until 31st January 2016 and to include some minor editorial changes.

R

R

R

Printed in Great Britain

SB−BR700−72−A101523

Page 2 of 18

Sep. 5/05

Dec.10/15 Revision 3
D. Description

This Service Bulletin introduces fuel shut-off pawl carrier pivot pins made

from a different material, which have improved corrosion protection

properties.

NOTE: The Accomplishment Instruction of this Service Bulletin is divided into

two INSTRUCTIONs as follows:

INSTRUCTION I - Applicable for engines "In Service".

INSTRUCTION II - Applicable for engines "At Overhaul/Shop Visit".

E. Compliance

R ALERT

R Service Bulletin must be accomplished on all engines by 31st January This

2016.

R

R

F. Approval

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

Design Organisation Approval No. EASA.21J.065.

G. Manpower

Estimated Man-hours:

(1) In Service

3 hours.

(2) At Overhaul/Shop Visit

Applicable (Hours not affected).

Printed in Great Britain

SB−BR700−72−A101523

Page 3 of 18

Sep. 5/05

Dec.10/15 Revision 3
H. Material Price and Availability

A modification kit is not required; parts are supplied as single line items.

This is a technical document not a quotation; any prices in this Service

Bulletin are given in good faith without engagement.

The prices listed within the Material Information are at the year of Service

Bulletin issue.

For availability of spares, contact:

Rolls-Royce Deutschland Ltd & Co KG

Spares Business

Eschenweg 11

15827 Blankenfelde-Mahlow

Germany

R +49 33-7086-3535 Tel:

R E-mail: rrd-spares@rolls-royce.com

I. Tooling Price and Availability

New tools are not required.

J. Industry Support Information

The incorporation of this Service Bulletin is not free of charge.

NOTE: For further information contact your Rolls-Royce Regional Customer

Manager (RCM).

K. Weight and Balance

(1) Weight Change

None.

(2) Moment Arm

No effect.

(3) Datum

ES2540 (PPS100).

L. Electrical Load Data

The aircraft electrical load is not affected by this Service Bulletin.

Printed in Great Britain

SB−BR700−72−A101523

Page 4 of 18

Sep. 5/05

Dec.10/15 Revision 3
M. Software Accomplishment Summary

Not applicable.

N. References

For BR700-710A1-10 Engines:

R dated Dec. 9/15. (1) Modification Bulletin 72-101523 Issue 04

(2) Engine Maintenance Manual - M-710-1BR, Chapters 70-50-02, 72-00-31,

72-56-15 and 78-10-02.

(3) Engine Manual - E-710-1BR, Chapters 72-38-02, 72-51-00, 72-56-15 and

78-10-02.

For BR700-710A2-20 Engines:

R dated Dec. 9/15. (1) Modification Bulletin 72-101523 Issue 04

(2) Engine Maintenance Manual - M-710-2BR, Chapters 70-50-02, 72-31-01,

72-56-15 and 78-10-02.

(3) Engine Manual - E-710-2BR, Chapters 72-38-02, 72-51-00, 72-56-15 and

78-10-02.

For BR700-710C4-11 Engines:

R dated Dec. 9/15. (1) Modification Bulletin 72-101523 Issue 04

(2) Engine Maintenance Manual - M-710-4BR, Chapters 70-50-02, 72-00-31,

72-56-15 and 78-10-02.

(3) Engine Manual - E-710-4BR, Chapters 72-38-02, 72-51-00, 72-56-15 and

78-10-02.

O. Other Publications Affected

For BR700-710A1-10 Engines:

(1) Illustrated Parts Catalog - S-710-1BR, Chapter 72-51-26.

For BR700-710A2-20 Engines:

(1) Illustrated Parts Catalog - S-710-2BR, Chapter 72-51-26.

For BR700-710C4-11 Engines:

(1) Illustrated Parts Catalog - S-710-4BR, Chapter 72-51-26.

Printed in Great Britain

SB−BR700−72−A101523

Page 5 of 18

Sep. 5/05

Dec.10/15 Revision 3
P. Interchangeability of Parts

Affected (Refer to paragraph 2.F. Instruction/Disposition Codes).

Printed in Great Britain

SB−BR700−72−A101523

Page 6 of 18

Sep. 5/05

Dec.10/15 Revision 3
2. Material Information

A. Parts required to accomplish this Service Bulletin (In addition to Parts in

2.B., 2.C. and 2.E.)

IPC

Fig/Item

No.

New

Part

No.

Unit Price

(US

Dollars)

Qty

Per

Eng.

Key Word Old

Part

No.

Instructions/

Dispositions

72-51-26

R 2 Pawl carrier 01-300 BRR24416 $ 430.00

pivot pin

BRR17117 (1)

B. Parts to be Reworked

None.

C. New Production Parts

None.

D. Redundant Parts

None.

E. Expendable Parts

Refer to the related Manual tasks given in the Accomplishment Instruction of

this Service Bulletin.

F. Instruction/Disposition Codes

(1) The old and new parts are fully interchangeable as a set only.

Printed in Great Britain

SB−BR700−72−A101523

Page 7 of 18

Sep. 5/05

Dec.10/15 Revision 3
3. Accomplishment Instruction

INSTRUCTION I - APPLICABLE FOR ENGINES "IN SERVICE"

A. General

NOTE: In order to reduce the potential for multiple-engine in-flight

shutdown, power loss, or other anomaly due to maintenance error,

Rolls-Royce Deutschland recommends that Operators avoid performing

maintenance on multiple engines installed on the same aircraft at the

same time. If it is not possible to avoid maintenance on more than one

engine of an aircraft at the same time, Rolls-Royce Deutschland

recommends that additional controls are applied in order to ensure that

maintenance tasks have been completed as defined.

WARNING: YOU MUST BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE

ENGINE IS STOPPED. THE ENGINE PARTS CAN STAY HOT FOR ALMOST ONE

HOUR.

WARNING: DO NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN

CAUSE AN INJURY. IF YOU GET AN INJURY PUT IT IN COLD WATER FOR TEN

MINUTES AND GET MEDICAL AID.

(1) Obey all the WARNINGS and CAUTIONS in the procedures that are referred

to.

(2) Consumable Materials

(a) Refer to the related Manual tasks given in this instruction.

(3) Tools and Equipment

(a) Refer to the related Manual tasks given in this instruction.

(4) Refer to the Engine Maintenance Manual, Chapter 70-50-02, PB201/TASK

70-50-02-910-801 for all torque procedures.

B. Get access to the Low Pressure (LP) turbine fuel shut-off pawl carrier that is

installed on the rear face of the LP turbine stage 2 disc

(1) Remove the exhaust cone from the engine (Refer to the Engine Maintenance

Manual, Chapter 78-10-02, PB401/TASK 78-10-02-000-801).

(2) Remove the outer exhaust air baffle from the engine (Refer to the Engine

Maintenance Manual, Chapter 72-56-15, PB401/TASK 72-56-15-000-801).

C. Put a protective cover below the pawl carrier to make sure that no parts or

tools can fall into the engine.

Printed in Great Britain

SB−BR700−72−A101523

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Sep. 5/05

Dec.10/15 Revision 3
D. Replace the two pawl carrier pivot pins (72-51-26, 01-300) that are installed

on the pawl carrier (72-51-26, 01-100) (Refer to Figure 1)

(1) Replace one pawl carrier pivot pin (72-51-26, 01-300)

(a) Hold the Dee head bolt (72-51-26, 01-290) in the fully rearward

position. At the same time remove the nut (72-51-26, 01-275) from

the thread of the Dee head bolt (72-51-26, 01-290).

(b) Hold the pawl (72-51-26, 01-310) and the spring (72-51-26, 01-320)

in position on the pawl carrier (72-51-26, 01-100). At the same time

remove the old pawl carrier pivot pin (72-51-26, 01-300), P/N

BRR17117 together with the retaining plate (72-51-26, 01-250) from

the pawl carrier (72-51-26, 01-100).

(c) Remove the pawl (72-51-26, 01-310) together with the spring

(72-51-26, 01-320) from the pawl carrier (72-51-26, 01-100).

(d) Push the Dee head bolt (72-51-26, 01-290) through the hole of the

pawl carrier (72-51-26, 01-100) fully rearward.

(e) Put and hold the pawl (72-51-26, 01-310) together with the spring

(72-51-26, 01-320) in position on the pawl carrier (72-51-26,

01-100).

(f) Install the new pawl carrier pivot pin (72-51-26, 01-300), P/N

BRR24416 together with the retaining plate (72-51-26, 01-250) on the

pawl carrier (72-51-26, 01-100)

[1] Make sure that the pawl carrier pivot pin (72-51-26, 01-300) is

correctly installed through the holes of the pawl carrier

(72-51-26, 01-100), the pawl (72-51-26, 01-310) and the spring

(72-51-26, 01-320).

[2] Make sure that the retaining plate (72-51-26, 01-250) is

correctly engaged in the groove of the pawl carrier pivot pin

(72-51-26, 01-300).

[3] Make sure that the thread of the Dee head bolt (72-51-26,

01-290) is correctly engaged in the hole of the retaining plate

(72-51-26, 01-250).

(g) Hold the Dee head bolt (72-51-26, 01-290) in the fully rearward

position. At the same time install the nut (72-51-26, 01-275) on the

thread of the Dee head bolt (72-51-26, 01-290).

(h) Torque the nut (72-51-26, 01-275) to 11,5 Nm (100 lbf in.).

Printed in Great Britain

SB−BR700−72−A101523

Page 9 of 18

Sep. 5/05

Dec.10/15 Revision 3
(i) Make sure that the pawl (72-51-26, 01-310) and the spring (72-51-26,

01-320) are free to move around the pawl carrier pivot pin

(72-51-26, 01-300)

[1] If the pawl (72-51-26, 01-310) and the spring (72-51-26,

01-320) do not move easily do the steps D.(1)(a) to D.(1)(i)

again to replace the pawl carrier pivot pin (72-51-26, 01-300).

(2) Do the steps D.(1)(a) to D.(1)(i) again to replace the other pawl carrier

pivot pin (72-51-26, 01-300).

E. Remove the protective cover from the engine.

F. Do an inspection of the pawl carrier adjustment to make sure that the two

pawls (72-51-26, 01-310) are installed in their correct positions (Refer to

Figure 2)

CAUTION: THE DIMENSION D MUST BE BETWEEN 1,4 AND 2,6 MM (0.055 AND 0.102 IN.).

IF THE DIMENSION D IS NOT IN THIS TOLERANCE, THE LP TURBINE OVERSPEED

SPLITTER UNIT CAN OPERATE AND CAUSE AN IN-FLIGHT SHUTDOWN.

(1) Make sure that the pawl arms (1) of the two pawls (72-51-26, 01-310) are

fully engaged in the middle of the 8 mm (0.315 in.) slots (2) of the LP

reference tube. The two dimensions D at each 8 mm (0.315 in.) slot (2) of

the LP reference tube must be between 1,4 and 2,6 mm (0.055 and 0.102

in.)

NOTE: There are four slots in the LP reference tube. The 8 mm (0.315

in.) slots (2) are the two smaller and closed slots in the LP

reference tube.

(a) If any pawl arm (1) of the two pawls (72-51-26, 01-310) is not

correctly engaged in the 8 mm (0.315 in.) slot (2) of the LP

reference tube, adjust the pawl carrier (72-51-26, 01-100) in

relation to the LP reference tube in accordance with the Engine

Maintenance Manual task that follows:

[1] For BR700-710A1-10 and BR700-710C4-11 Engines:

Refer to the Engine Maintenance Manual, Chapter 72-00-31,

PB401/TASK 72-00-31-400-801.

[2] For BR700-710A2-20 Engines:

Refer to the Engine Maintenance Manual, TASK 72-31-01-400-801.

G. Make sure that the work area is clean and clear of tools, equipment and other

unwanted materials.

Printed in Great Britain

SB−BR700−72−A101523

Page 10 of 18

Sep. 5/05

Dec.10/15 Revision 3
H. Close the access to the LP turbine fuel shut-off pawl carrier

(1) Install the outer exhaust air baffle on the engine (Refer to the Engine

Maintenance Manual, Chapter 72-56-15, PB401/TASK 72-56-15-400-801).

(2) Install the exhaust cone on the engine (Refer to the Engine Maintenance

Manual, Chapter 78-10-02, PB401/TASK 78-10-02-400-801).

I. Complete the Accomplishment Form on page 18 and send it to Rolls-Royce

R Deutschland, Service Engineering.

J. A record of accomplishment is required. Rolls-Royce Deutschland suggests to

put an entry into the engine log book

R (1) Record the incorporation of Service Bulletin SB-BR700-72-A101523 in the

Engine Service Record.

R (2) Record the incorporation of Service Bulletin SB-BR700-72-A101523 in the

Service Record of the Module 51 Log Card.

R (3) Record the incorporation of Service Bulletin SB-BR700-72-A101523 in the

Service Bulletins list of the Module 51 Log Card.

Printed in Great Britain

SB−BR700−72−A101523

Page 11 of 18

Sep. 5/05

Dec.10/15 Revision 3
INSTRUCTION II - APPLICABLE FOR ENGINES "AT OVERHAUL/SHOP VISIT"

K. General

(1) Obey all the WARNINGS and CAUTIONS in the procedures that are referred

to.

(2) Consumable Materials

(a) Refer to the related Manual tasks given in this instruction.

(3) Tools and Equipment

(a) Refer to the related Manual tasks given in this instruction.

L. Get access to the Low Pressure (LP) turbine fuel shut-off pawl carrier that is

installed on the rear face of the LP turbine stage 2 disc

(1) Remove the exhaust cone from the engine

(a) For BR700-710A1-10 and BR700-710A2-20 Engines:

Refer to the Engine Manual, Chapter 78-10-02, PB301/TASK

78-10-02-000-001.

(b) For BR700-710C4-11 Engines:

Refer to the Engine Manual, Chapter 78-10-02, PB301/TASK

78-10-02-000-801.

(2) Remove the outer exhaust air baffle from the engine

(a) For BR700-710A1-10 and BR700-710A2-20 Engines:

Refer to the Engine Manual, Chapter 72-56-15, PB301/TASK

72-56-15-000-001.

(b) For BR700-710C4-11 Engines:

Refer to the Engine Manual, Chapter 72-56-15, PB301/TASK

72-56-15-000-801.

M. Put a protective cover below the pawl carrier to make sure that no parts or

tools can fall into the engine.

Printed in Great Britain

SB−BR700−72−A101523

Page 12 of 18

Sep. 5/05

Dec.10/15 Revision 3
N. Remove the two old pawl carrier pivot pins (72-51-26, 01-300), P/N BRR17117

from the pawl carrier

(1) For BR700-710A1-10 and BR700-710A2-20 Engines:

Refer to the Engine Manual, Chapter 72-51-00, PB501/TASK

72-51-00-000-001.

(2) For BR700-710C4-11 Engines:

Refer to the Engine Manual, Chapter 72-51-00, PB501/TASK

72-51-00-000-801.

O. Install the two new pawl carrier pivot pins (72-51-26, 01-300), P/N BRR24416

on the pawl carrier

(1) For BR700-710A1-10 and BR700-710A2-20 Engines:

Refer to the Engine Manual, Chapter 72-51-00, PB1001/TASK

72-51-00-400-001.

(2) For BR700-710C4-11 Engines:

Refer to the Engine Manual, Chapter 72-51-00, PB1001/TASK

72-51-00-400-801.

P. Make sure that the pawls on the pawl carrier are free to move around the pawl

carrier pivot pins (72-51-26, 01-300)

(1) If any pawl do not move easily do the steps N. and O. again to replace

the pawl carrier pivot pin (72-51-26, 01-300) at the affected pawl.

Q. Remove the protective cover from the engine.

Printed in Great Britain

SB−BR700−72−A101523

Page 13 of 18

Sep. 5/05

Dec.10/15 Revision 3
R. Do an inspection of the pawl carrier adjustment to make sure that the two

pawls (72-51-26, 01-310) are installed in their correct positions (Refer to

Figure 2)

CAUTION: THE DIMENSION D MUST BE BETWEEN 1,4 AND 2,6 MM (0.055 AND 0.102 IN.).

IF THE DIMENSION D IS NOT IN THIS TOLERANCE, THE LP TURBINE OVERSPEED

SPLITTER UNIT CAN OPERATE AND CAUSE AN IN-FLIGHT SHUTDOWN.

(1) Make sure that the pawl arms (1) of the two pawls (72-51-26, 01-310) are

fully engaged in the middle of the 8 mm (0.315 in.) slots (2) of the LP

reference tube. The two dimensions D at each 8 mm (0.315 in.) slot (2) of

the LP reference tube must be between 1,4 and 2,6 mm (0.055 and 0.102

in.)

NOTE: There are four slots in the LP reference tube. The 8 mm (0.315

in.) slots (2) are the two smaller and closed slots in the LP

reference tube.

(a) If any pawl arm (1) of the two pawls (72-51-26, 01-310) is not

correctly engaged in the 8 mm (0.315 in.) slot (2) of the LP

reference tube, adjust the pawl carrier (72-51-26, 01-100) in

relation to the LP reference tube in accordance with the Engine

Manual task that follows:

[1] For BR700-710A1-10 and BR700-710A2-20 Engines:

Refer to the Engine Manual, Chapter 72-38-02, PB401/TASK

72-38-02-400-001.

[2] For BR700-710C4-11 Engines:

Refer to the Engine Manual, Chapter 72-38-02, PB401/TASK

72-38-02-400-801.

S. Make sure that the work area is clean and clear of tools, equipment and other

unwanted materials.

Printed in Great Britain

SB−BR700−72−A101523

Page 14 of 18

Sep. 5/05

Dec.10/15 Revision 3
T. Close the access to the LP turbine fuel shut-off pawl carrier

(1) Install the outer exhaust air baffle on the engine

(a) For BR700-710A1-10 and BR700-710A2-20 Engines:

Refer to the Engine Manual, Chapter 72-56-15, PB401/TASK

72-56-15-400-001.

(b) For BR700-710C4-11 Engines:

Refer to the Engine Manual, Chapter 72-56-15, PB401/TASK

72-56-15-400-801.

(2) Install the exhaust cone on the engine

(a) For BR700-710A1-10 and BR700-710A2-20 Engines:

Refer to the Engine Manual, Chapter 78-10-02, PB401/TASK

78-10-02-400-001.

(b) For BR700-710C4-11 Engines:

Refer to the Engine Manual, Chapter 78-10-02, PB401/TASK

78-10-02-400-801.

U. Complete the Accomplishment Form on page 18 and send it to Rolls-Royce

R Deutschland, Service Engineering.

V. A record of accomplishment is required. Rolls-Royce Deutschland suggests to

put an entry into the engine log book

R (1) Record the incorporation of Service Bulletin SB-BR700-72-A101523 in the

Engine Service Record.

R (2) Record the incorporation of Service Bulletin SB-BR700-72-A101523 in the

Service Record of the Module 51 Log Card.

R (3) Record the incorporation of Service Bulletin SB-BR700-72-A101523 in the

Service Bulletins list of the Module 51 Log Card.

Printed in Great Britain

SB−BR700−72−A101523

Page 15 of 18

Sep. 5/05

Dec.10/15 Revision 3
Removal and Installation of the Pawl Carrier Pivot Pins (72-51-26, 01-300)

Figure 1

Printed in Great Britain

SB−BR700−72−A101523

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Sep. 5/05

Dec.10/15 Revision 3
Inspection of the Pawl Carrier Adjustment

Figure 2

Printed in Great Britain

SB−BR700−72−A101523

Page 17 of 18

Sep. 5/05

Dec.10/15 Revision 3
R

R Accomplishment Form

Printed in Great Britain

SB−BR700−72−A101523

Page 18 of 18

Sep. 5/05

Dec.10/15 Revision 3
 

 SERVICE BULLETIN FEEDBACK FORM

Dec.10/15

Revision 3

© Rolls-Royce Deutschland Ltd & Co KG

SB-BR700-72-A101523

Page 1 of 1

Printed in Great Britain

Please use this form to give feedback on the quality of this Service Bulletin. The input you provide will be used to 

analyse areas of improvement and to take action to further improve the quality of our Service Bulletins.

We thank you for the time you spent in completing this form.

Please rate on a scale of 1 to 5, with 5 being the highest score:

- General quality rating of this Service Bulletin  1  2  3  4  5

- Quality rating of the Accomplishment Instructions  1  2  3  4  5

- Quality rating of the Illustration  1  2  3  4  5

- Is this Service Bulletin easy to understand ?  Yes  No 

If you have had difficulties to perform this Service Bulletin please quote below the area(s) and give a short 

description of the issue:

Operator: Overhaul Site:

Name/Title: Date:

Please send the completed Service Bulletin Feedback Form to Rolls-Royce Deutschland, Service Bulletin Group.

Email: mailto:RRD.SERVICE.BULLETINS@ROLLS-ROYCE.COM 

Planning Information

Section:

Material Information

Section:

Accomplishment Instruction

Section:

  1.A.  1.I.  2.A.  General

  1.B.  1.J.  2.B.  Get Access

  1.C.  1.K.  2.C.  Removal/Installation

  1.D.  1.L.  2.D.  Inspection

  1.E.  1.M.  2.E.  Test

  1.F.  1.N.  2.F.  Close the Access

  1.G.  1.O.  Log Book Entry

  1.H  1.P. 

Explanatory notes: