This document transmits Revision 3 to Service Bulletin RB211-73-G848

Document History

Service Bulletin Revision Status Supplement Revision Status

Initial Issue Mar.30/12

Revision 1 Jan.21/13

Revision 2 Sep.20/13

Bulletin Revision 3

Remove Incorporate Reason for change

All pages of the

Service Bulletin

Page 1 and 2 of the

Service Bulletin

To cancel Non-Modification

Service Bulletin 73-G848

All pages of

Appendix 1

To cancel Non-Modification

Service Bulletin 73-G848

All pages of

Appendix 2

To cancel Non-Modification

Service Bulletin 73-G848

Printed in Great Britain

Jun.12/14

RB211 TRENT 700 SERIES PROPULSION SYSTEM NON-MODIFICATION SERVICE BULLETIN

RB.211−73−G848

Transmittal - Page 1 of 2

Date
LIST OF EFFECTIVE PAGES

The effective pages to this Service Bulletin following incorporation of Revision

3 are as follows:

Page Revision Number Revision Date

Bulletin

R 1 3 Jun.12/14

R 2 3 Jun.12/14

Printed in Great Britain

RB.211−73−G848

Transmittal - Page 2
1. Planning Information

A. Effectivity

Airbus A330

RB211 TRENT 768-60/15 Engines

RB211 TRENT 768-60/16 Engines

RB211 TRENT 772-60/15 Engines

RB211 TRENT 772-60/16 Engines

RB211 TRENT 772B-60/15 Engines

RB211 TRENT 772B-60/16 Engines

RB211 TRENT 772C-60/15 Engines

RB211 TRENT 772C-60/16 Engines

B. Reason

Low-pressure (LP) fuel leaks from the LP fuel tubes between the combined LP/HP

(High Pressure) Fuel Pump and the Fuel/Oil Heat Exchanger (FOHE), and FOHE to

LP/HP fuel pump have occurred in-service in the Trent 700 fleet. Movement of

the FOHE mounts due to wear allows the fuel tubes to move excessively within

the clipping points. This has resulted in excessive wear of the rubber section

of the P-Clips, and the subsequent frettage between the exposed metal band and

the fuel tubes. The frettage reduces the fuel tube outer wall thickness,

leading to fracture of the fuel tube and the consequent fuel leak. This may

cause the leakage of significant amounts of fuel and can cause IFSD and

diversion events. This Non-Modification Service Bulletin (NMSB) is designed to

address the condition on in-shop engines.

Revision 1 of this NMSB was issued to; Section 2. Material Information, rectify

an incorrect part number at 72-35-16, Fig./Item 05500; Section 3.

Accomplishment Instructions, to correct IPC Fig/Item reference in para

3.A.(4)(a)(iii), remove incorrect torque loading instruction para 3.A.(4)(a)(v)

and minor non-technical changes to improve the clarity of the acceptance

criteria tables.

R issued to advise that this inspection was Revision 2 of this NMSB was

applicable to all engines in-shop.

TRENT 700 - LP FUEL TUBES, CLIPS, AND FOHE MOUNTING HARDWARE - INSPECTION FOR

FRETTAGE - NON-MODIFICATION SERVICE BULLETIN - MOD.73-G848

Printed in Great Britain

RB.211−73−G848

Page 1 of 2

R Mar 30/12

Jun.12/14
Revision 3 of this NMSB is issued to advise that Rolls-Royce has confirmed that

the requirement to inspect the LP fuel tubes, clips and FOHE mounting hardware

has been revised and defined in NMSB 73-AH522 for both in-shop and on-wing.

R

R

R

R Non-Modification Service Bulletin 73-G848 is therefore cancelled.

C. Approval

R Non-Modification Service Bulletin 73-G848 was cancelled under the Rolls-Royce

R authority of Design Organisation Approval EASA.21J.035 on Mar.31/14.

D. References

R Rolls-Royce RB211 Service Bulletin:

R RB211-73-AH522

Trent 700 - LP fuel tubes, clips, and FOHE mounting hardware - Inspection for

frettage - Non-Modification Service Bulletin.

R

R

2. Material Information

R None.

3. Accomplishment Instructions

R None.

Printed in Great Britain

RB.211−73−G848

Page 2

R Mar 30/12

Jun.12/14