P.O. Box 31, DERBY 

DE24 8BJ, UK 

Telephone: 44 (0) 1332 242424 

Fax: 44 (0) 1332 249936 m 

Rol Is-Royce 

TRANSMITTA 

The technical information contained in this document has been approved under the authority 

of - See Planning Information, Approval. 

Signed Date Jul. 7/11 

N. J. Wright 

RB211 TRENT 500 SERIES PROPULSION SYSTEMS NON-MODIFICATION SERVICE BULLETIN 

ALERT 

This document transmits Revision 5 to Service Bulletin RB211-72-AF260 

Document History 

Service Bulletin Revision Status 

Initial Issue Oct .17/06 

Revision 1 Jan. 17/07 

Revision 2 Ju1.4/07 

Revision 3 Sep. 22/08 

Revision 4 Ju1.28/09 

Bulletin Revision 5 

Remove Incorporate 

Supplement Revision Status 

ALERT 

Reason for change 

Transmittal - Page 1 of 3 

CHECK THAT ALL PREVIOUS TRANSMllTALS HAVE BEEN INCORPORATED 

If any have not been received please advise Customer Data Services, Rolls-Royce plc, Derby, England 

O Rolls-Royce plc (date as above) Printed in Great Britain 
All pages of the

Service Bulletin

Pages 1 to 12 of the

Service Bulletin

To remove Trent 700 and

Trent 800 from 1. A.

Effectivity, 1.H.

References and 3.

Accomplishment

Instructions. To change the

EASA AD in 1.D. Compliance.

To amend the acceptance

criteria for damage and

frettage marks to

incorporate Engine Manual

references and to change

Fig.1 to Trent 500 engine

geometry.

All pages of

Appendix 1

Page 1 and 2 of

Appendix 1

To remove Trent 700 and

Trent 800 from 1. A.

Effectivity, 1.H.

References and 3.

Accomplishment

Instructions. To change the

EASA AD in 1.D. Compliance.

To amend the acceptance

criteria for damage and

frettage marks to

incorporate Engine Manual

references and to change

Fig.1 to Trent 500 engine

geometry.

Printed in Great Britain

RB.211−72−AF260

Transmittal - Page 2
LIST OF EFFECTIVE PAGES

The effective pages to this Service Bulletin following incorporation of Revision

5 are as follows:

Page Revision Number Revision Date

Bulletin

R 1 5 Jul.7/11

R 2 5 Jul.7/11

R 3 5 Jul.7/11

R 4 5 Jul.7/11

R 5 5 Jul.7/11

R 6 5 Jul.7/11

R 7 5 Jul.7/11

R 8 5 Jul.7/11

R 9 5 Jul.7/11

R 10 5 Jul.7/11

R 11 5 Jul.7/11

R 12 5 Jul.7/11

Appendix 1

R 1 5 Jul.7/11

R 2 5 Jul.7/11

Printed in Great Britain

RB.211−72−AF260

Transmittal - Page 3
1. Planning Information

A. Effectivity

R Airbus A340

R RB211 TRENT 500 Engines

B. Reason

(1) Problem

Cracking of the rear balance land has been found on Trent 800 and Trent

700 IP compressor shafts. The balancing feature and method is similar on

Trent 500, Trent 700 and Trent 800 engines.

Revision 1 of this Non-Modification Service Bulletin (NMSB) was to revise

an illustration (Fig.5).

Revision 2 of this NMSB was to revise section 3. Accomplishment

Instructions to emphasise the retention of balance weights and clamp

plates and the quarantine of the IP compressor shaft where inspection

acceptance criteria are not met.

Revision 3 of this NMSB was to incorporate revised accept/reject criteria

for the recess rear face and introduces accept/reject criteria for both

the inner diaphragm rear face and the recess inside diameter.

R that this NMSB did not have to be Revision 4 of this NMSB stated

accomplished on IP compressor shafts with a life of zero cycles since new,

R a revised accept/reject criteria and brought the NMSB into line introduced

with current SB style.

(2) Revision 5 of this NMSB is issued to remove the effect of Trent 700 and

Trent 800 engines from this NMSB, as this inspection has been superceded

by NMSB 72-AG085 for these engines. Also the acceptance criteria for

damage and frettage marks has been revised.

R

R

R

R

(3) Substantiation

This NMSB instructs a visual inspection of the IP Compressor shaft rear

balance land and to obtain data to support engineering analysis.

ENGINE - IP COMPRESSOR SHAFT - VISUAL INSPECTION OF BALANCE LAND - NON-MODIFICATION

SERVICE BULLETIN - NON - MOD.72-AF260

Printed in Great Britain

RB.211−72−AF260

Page 1 of 12

Oct 17/06

R Jul. 7/11
(4) 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.

C. Description

This NMSB instructs a visual inspection of the IP compressor shaft rear balance

land in order to maintain serviceability.

Inspection results (Appendix 1) shall be sent to Rolls-Royce via your local

service representative as soon as practically possible. These results will be

used to support engineering analysis.

D. Compliance

ALERT

(1) This Non-Modification Service Bulletin is subject to a European Aviation

R Airworthiness Directive EASA AD 2010-0266. It was previously Safety Agency

subject to

R

R EASA AD 2007-0052.

(2) Initial Issue and revision 1 and 2 of this Non-Modification Service

Bulletin is subject to a Federal Aviation Authority Airworthiness

Directive FAA AD 2008-18-08.

(3) This Non-Modification Service Bulletin should be accomplished at shop

visit on all engines sufficiently disassembled to access the Intermediate

Pressure (IP) Compressor Module rear face.

(4) This NMSB does not need to be accomplished on IP compressor shafts that

have a life of zero cycles since new.

Printed in Great Britain

RB.211−72−AF260

Page 2

Oct 17/06

R Jul. 7/11
E. Approval

The technical content of this Non-Modification Service Bulletin was approved

under the authority of Design Organisation Approval EASA.21J.035 on Oct.16/06

R and on Jul. 5/11. and was re-approved on Sep.16/08, Jul.20/09

F. Manpower

(1) Time to remove the balance weights

0.25 hours

(2) Time to clean and inspect

0.5 hours

(3) Time to refit the balance weights

0.25 hours

G. Tooling and Consumables

Special tools are not required.

H. References

(1) Engine Manual (EM), 72-32-31, Clean the IP compressor remaining parts,

72-32-31, Examine the IP compressor stage 1 to 8 shaft assembly, 72-32-31,

Examine the IP compressor shaft remaining parts

R

R

R

(2) TSD 594J TASK 70-00-00-300-363

(3) Standard Practices Manual (SPM) TASK 70-51-00-400-000, Torque Tighten

Components, 70-12-04-400-000, Lock Threaded Parts, 70-42-11-300-004-003,

Repair, FRS6625

Printed in Great Britain

RB.211−72−AF260

Page 3

Oct 17/06

R Jul. 7/11
2. Material Information

A. Parts required to accomplish this Service Bulletin

All Engines

72-32-31

FIG

ITEM

NO.

NEW

PART

NO.

QTY PART TITLE MAT OLD

PART

NO.

INSTR

DISP

01-450 AS44702 4 Bolt, 0.190 in. dia

x 0.335 in., VU1653

- AS44702 -

01-452 AS44691 4 Washer, VU1653 - AS44691 -

Printed in Great Britain

RB.211−72−AF260

Page 4

Oct 17/06

R Jul. 7/11
3. Accomplishment Instructions

A. Remove and inspect the balance weights and clamps.

CAUTION: YOU MUST ALWAYS WEAR COTTON GLOVES WHEN YOU TOUCH THE SHAFT.

(1) Make a careful record of which balance weight and clamp are fitted at each

position. Use an OMat 261 temporary marker to indicate the position of

each balance weight on the shaft, refer to TSD 594J TASK 70-00-00-300-363.

(2) Record the position and weight of each of the balance weights in Appendix

1 for reference during the assembly procedure.

(3) Remove the balance weight assemblies (balance weight EIPC 72-32-31,

Fig./Item No. 01-415/417/419/421/423/425/427, clamp EIPC 72-32-31,

Fig./item No.01-455, washer EIPC 72-32-31, Fig./Item No. 01-452 and bolt

EIPC 72-32-31,Fig./Item No. 01-450) from the balance land.

(4) Clean the balance weights and clamps in accordance with EM, 72-32-31,

Clean the IP compressor shaft remaining parts.

R

R

(5) Inspect the balance weights for damage in accordance with EM, 72-32-31,

Examine the IP compressor shaft remaining parts.

R

R

If no frettage (galling)

is found

Accept, retain weights and discard bolts

and washers

If frettage (galling) is

found on the balance

weight

Reject

If the balance weight is

rejected

Find and record the weight of the

balance weight assembly (balance weight

(EIPC 72-32-31, Fig./Item No.

01-415/417/419/421/423/425/427), clamp

(EIPC 72-32-31, Fig./Item No. 01-455),

washer (EIPC 72-32-31, Fig./Item No.

01-452) and bolt (EIPC 72-32-31,

Fig./Item No. 01-450)). This is to aid

the Assembly process

(6) Inspect the clamps in accordance with EM, 72-32-31, Examine the IP

compressor shaft remaining parts.

R

R

No damage and not bent Accept

Damaged or Bent Reject.

Printed in Great Britain

RB.211−72−AF260

Page 5

Oct 17/06

R Jul. 7/11
B. Carry out a visual inspection, of the circumference of the balance land looking

for damage. Refer to Fig.1, Fig.2, Fig.3, Fig.4 and Fig.5.

(1) Clean the areas to be inspected using a dry cloth making sure you do not

erase the temporary markings indicating the position of the balance

weights.

(2) Carry out a visual inspection, using a mirror, a 10x magnifying lens and a

torch of the circumference of the balance land, as indicated in Fig.1.

(a) Any surface of the balance land.

Cracked Reject

(b) Outer diaphragm rear face - damage or marks. Refer to EM, 72-32-31,

Examine the IP compressor stage 1 to 8 shaft assembly.

R

R

(c) Recess outside diameter - damage or marks. Refer to EM, 72-32-31,

Examine the IP compressor stage 1 to 8 shaft assembly.

R

R

(d) Rear face - Damage or marks. Refer to EM, 72-32-31, Examine the IP

compressor stage 1 to 8 shaft assembly.

R

R

(e) Recess rear face - Damage or marks. Refer to EM, 72-32-31, Examine the

IP compressor stage 1 to 8 shaft assembly.

R

R

(f) Recess inside diameter - Damage or marks. Refer to EM, 72-32-31,

Examine the IP compressor stage 1 to 8 shaft assembly.

R

R

(g) Inner diaphragm rear face - Damage or marks. Refer to EM, 72-32-31,

Examine the IP compressor stage 1 to 8 shaft assembly.

R

R

(3) Install the balance weight and the clamp in the same position as where

they were removed from on the IP Compressor Drum.

(a) If the balance weights and clamps are found to be serviceable,

(i) Install the balance weights (EIPC 72-32-31, Fig./Item No.

01-415/417/419/421/423/425/427), clamp (EIPC 72-32-31,

Fig./Item No. 01-455) with new bolts (EIPC 72-32-31, Fig./Item

No. 01-450), new locking washers (EIPC 72-32-31, Fig./Item No.

01-452) in the same position as where they were removed from on

the inspected and serviceable IP Compressor Drum.

NOTE: If any balance weights, clamps bolts and washers are

replaced, the new weight assembly must be within 0,1 g

(0.003 oz) of the original balance weight assembly.

(ii) Torque tighten the bolts to 4Nm (35 lbfin.). Refer to Standard

Practices Manual, TASK 70-51-00-400-000.

Printed in Great Britain

RB.211−72−AF260

Page 6

Oct 17/06

R Jul. 7/11
(iii) Use the locking washers, EIPC 72-32-31, Fig./Item No. 01-452,

to lock the bolts, EIPC 72-32-31, Fig./Item No. 01-450, in

position. Refer to Standard Practices Manual, TASK

70-12-04-400-000.

(4) If any of the acceptance criteria in Accomplishment Instructions (3.B.(2))

are not met; retain and quarantine the balance weight, balance clamp plate

and Compressor Drum and refer to Rolls-Royce via your local representative

within 2 weeks of the inspection.

(5) Make sure that all temporary markings produced in Accomplishment

Instructions 3.A.(1) are removed.

C. Record the condition of the balance land on the attached inspection sheet

provided in Appendix 1.

D. Accomplishment of this Non-Modification Service Bulletin is to be recorded in

the engine logbook.

Printed in Great Britain

RB.211−72−AF260

Page 7

Oct 17/06

R Jul. 7/11
B

B

RECESS OUTSIDE

REAR FACE

(fig 3), (fig 5)

OUTER DIAPHRAGM INNER DIAPHRAGM

REAR FACE

A

deh0007121

BALANCE

LAND

DIA (fig 4)

REAR FACE

RECESS REAR

FACE (fig 2)

RECESS

INSIDE DIA

A

R

R Surfaces to be visually inspected

R Fig.1

Printed in Great Britain

RB.211−72−AF260

Page 8

Oct 17/06

R Jul. 7/11
Frettage (Galling) on the recess rear face (viewed using a mirror)

Fig.2

Printed in Great Britain

RB.211−72−AF260

Page 9

Oct 17/06

R Jul. 7/11
Marks on the Rear Face and Visible Cracking

Fig.3

Printed in Great Britain

RB.211−72−AF260

Page 10

Oct 17/06

R Jul. 7/11
A Rejectable Damage Mark on the Recess Outside Diameter, Near the Chamfer with the

Rear Face and Visible Cracking on the First Trent 800 Finding

Fig.4

Printed in Great Britain

RB.211−72−AF260

Page 11

Oct 17/06

R Jul. 7/11
Heavy Circumferential Frettage Mark and Visible Cracking on the Rear Face on the

Trent 700 Finding. R

R Fig.5

Printed in Great Britain

RB.211−72−AF260

Page 12

Oct 17/06

R Jul. 7/11
Non-Modification Service Bulletin RB211-72-AF260. Critical data sheet.

Complete the following sheet for every shaft inspected.

1. Retain a copy of this sheet at overhaul facility.

2. Send a copy to Rolls-Royce via your local representative.

APPENDIX 1

Printed in Great Britain

RB.211−72−AF260

Appendix 1 - Page 1 of 2

Oct 17/06

R Jul. 7/11
Overhaul Base

ESN

Engine Mark (e.g. Trent 500)

IPC Drum PN

IPC Drum SN

Balance weights fitted:

Finding (location, N/A if none) Dimension (depth, length,...) Comments

Finding (location, N/A if none) Dimension (depth, length,...) Comments

Finding (location, N/A if none) Dimension (depth, length,...) Comments

Finding (location, N/A if none) Dimension (depth, length,...) Comments

Finding (location, N/A if none) Dimension (depth, length,...) Comments

Finding (location, N/A if none) Dimension (depth, length,...) Comments

Finding (location, N/A if none) Dimension (depth, length,...) Comments

Date of Inspection

PN

AS44695−150

AS44695−175

AS44695−200

Amount

CSN

TSN

CSN

TSN

Location

Balance weights:

Frettage

Outer Diaphragm rear face

Crack

Frettage

Marks on Face

Other

Crack

Frettage

Marks on Face

Mark near chamfer

Recess outside dia

Other

Crack

Frettage

Marks on Face

Mark near chamfer

Rear face

Other

Recess rear face

Crack

Frettage

Marks on Face

Other

Recess inside dia

Crack

Frettage

Marks on Face

Other

Inner Diaphragm rear face

Crack

Frettage

Marks on Face

Other

AS44695−225

AS44695−250

AS44695−275

AS44695−300

def0013697

Record position of each weight on 

this diagram 

View on Rear Face of IPC 8 disc 

looking towards front of engine 

 

Datum is the centre of the IPC8 

blade loading slot 

 

Datum

Feedback sheet NMSB 72−AF260

Appendix 1

Printed in Great Britain

RB.211−72−AF260

Appendix 1 - Page 2

Oct 17/06

R Jul. 7/11