P.O. Box 31, DERBY 

DE24 8BJ, UK 

Telephone: 44 (0) 1332 242424 

Fax: 44 (0) 1332 249936 

PUBLICATION 

- Rolls-Royce 

TRANSMITTA 

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

of - See Planning Information, Approval. 

Signed 4, Date Ju1.28/09 

N. J. Wright 

RB211 TRENT 500, 700 AND 800 SERIES PROPULSION SYSTEMS NON-MODIFICATION 

SERVICE BULLETIN 

ALERT 

This document transmits Revision 4 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 

Bulletin Revision 4 

Remove 

Pages 1 to 12 of the 

Service Bulletin 

Supplement Revision Status 

Incorporate 

Pages 1 to 13 of the 

Service Bulletin 

Page 1 and 2 of 

Appendix 1 

ALERT 

Reason for change 

To remove accompl i shment on 

IP compressor shafts with a 

life of zero cycles since 

new, introduce a revised 

accept/reject criteria and 

bring the NMSB into line 

with current SB style. 

To remove accompl i shment on 

IP compressor shafts with a 

life of zero cycles since 

new, introduce a revised 

accept/reject criteria and 

bring the NMSB into line 

with current SB style. 

Transmittal - Page 1 of 2 

CHECK THAT ALL PREVIOUS TRANSMITTALS 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 
LIST OF EFFECTIVE PAGES

The effective pages to this Service Bulletin following incorporation of Revision

4 are as follows:

Page Revision Number Revision Date

Bulletin

R 1 4 Jul.28/09

R 2 4 Jul.28/09

R 3 4 Jul.28/09

R 4 4 Jul.28/09

R 5 4 Jul.28/09

R 6 4 Jul.28/09

R 7 4 Jul.28/09

R 8 4 Jul.28/09

R 9 4 Jul.28/09

R 10 4 Jul.28/09

R 11 4 Jul.28/09

R 12 4 Jul.28/09

R 13 4 Jul.28/09

Appendix 1

R 1 4 Jul.28/09

R 2 4 Jul.28/09

Printed in Great Britain

RB.211−72−AF260

Transmittal - Page 2
1. Planning Information

A. Effectivity

(1) Boeing 777

RB211 TRENT 800 Engines

(2) Airbus A330

RB211 TRENT 700 Engines

(3) Airbus A340

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.

R

R

R

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

an illustration (Fig.5).

R

R

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.

R

R

R

R

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

R

R

Revision 4 of this NMSB states that this NMSB does not have to be

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

introduces a revised accept/reject criteria and brings the NMSB into line

with current SB style.

R

R

R

R

(2) 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 13

Oct.17/06

R Jul.28/09
(3) Effect of Bulletin on:

(a) Operation

R Not affected.

(b) Maintenance

R Not affected.

(c) Overhaul

R Not affected.

(d) Repair Schemes

R Not affected.

(e) Interchangeability

R Not affected.

R C. Description

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

land in order to maintain serviceability.

R

R

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.

R

R

R

D. Compliance

ALERT

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

Safety Airworthiness Directive EASA AD 2007-0052.

R

R

(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.

R

R

R

(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.

R

R

R

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

have a life of zero cycles since new.

R

R

Printed in Great Britain

RB.211−72−AF260

Page 2

Oct.17/06

R Jul.28/09
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 was re-approved on Sep.16/08 and on Jul.20/09.

F. Manpower

(1) Time to remove the balance weights

0.25 hours

R inspect (2) Time to clean and

0.5 hours

(3) Time to refit the balance weights

0.25 hours

R G. Tooling and Consumables

R Special tools are not required.

H. References

R Engine Manual (EM):

R (1) TRENT 500

TASK 72-32-31-100-830, Clean, TASK 72-32-31-200-801, 72-32-31-200-830,

Inspection/Check

R

R

R (2) TRENT 700

TASK 72-32-31-100-804, Clean, TASK 72-32-31-200-801, 72-32-31-200-804,

Inspection/Check

R

R

R (3) TRENT 800

TASK 72-32-31-100-804, Clean, TASK 72-32-31-200-801, 72-32-31-200-804,

Inspection/Check

R

R

R (4) TSD 594J TASK 70-00-00-300-363

(5) 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

R

R

R

Printed in Great Britain

RB.211−72−AF260

Page 3

Oct.17/06

R Jul.28/09
2. Material Information

R this Service Bulletin A. Parts required to accomplish

R All Engines

R 72-32-31

R FIG

R ITEM

R NO.

R NEW

R PART

R NO.

R PART TITLE R QTY MAT OLD

R PART

R NO.

R INSTR

R DISP

R AS44702 R 4 Bolt, 0.190 in. dia R 01-450

R x 0.335 in., VU1653

- AS44702 -

R AS44691 R 4 Washer, VU1653 R 01-452 - AS44691 -

Printed in Great Britain

RB.211−72−AF260

Page 4

Oct.17/06

R Jul.28/09
3. Accomplishment Instructions

R A. Remove and inspect the balance weights and clamps.

R 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.

R

R

R

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

1 for reference during the assembly procedure.

R

R

(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.

R

R

R

R

R (4) Clean the balance weights and clamps in accordance with:

R TRENT 500 EM TASK 72-32-31-100-830

R TRENT 700 EM TASK 72-32-31-100-804

R TRENT 800 EM TASK 72-32-31-100-804

R (5) Inspect the balance weights for damage in accordance with:

R TRENT 500 EM TASK 72-32-31-200-830, SUBTASK 72-32-31-210-054

R TRENT 700 EM TASK 72-32-31-200-804, SUBTASK 72-32-31-210-099

R TRENT 800 EM TASK 72-32-31-200-804, SUBTASK 72-32-31-210-100

If no frettage (galling)

is found

R

R

Accept, retain weights and discard bolts

and washers

If frettage (galling) is

found on the balance

weight

R

R

R

Reject

If the balance weight is

rejected

R

R

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

R

R

R

R

R

R

R

R

R

Printed in Great Britain

RB.211−72−AF260

Page 5

Oct.17/06

R Jul.28/09
R (6) Inspect the clamps in accordance with:

R TRENT 500 TASK 72-32-31-200-830, SUBTASK 72-32-31-210-056

R TRENT 700 TASK 72-32-31-200-804, SUBTASK 72-32-31-210-015

R TRENT 800 TASK 72-32-31-200-804, SUBTASK 72-32-31-210-015

R Accept R No damage and not bent

R Reject. R Damaged or Bent

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.

R

R

(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.

R

R

R

(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.

R

R

R (a) Any surface of the balance land.

R Reject R Cracked

R (b) Outer diaphragm rear face - damage or marks. Refer to:

R Trent 800 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-097

R Trent 700 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-041

R Trent 500 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-068

R (c) Recess outside diameter.

Damage or indentation

marks on the recess

outside diameter near

the chamfer with the

rear face

R

R

R

R

R

R Reject

Damage or indentation

marks more than 1,00 mm

(0,039 in.) away from

the chamfer with the

rear face

R

R

R

R

R

Refer to Trent 800 EM TASK

72-32-31-200-801, SUBTASK

72-32-31-220-097

R

R

R

Trent 700 EM TASK 72-32-31-200-801,

SUBTASK 72-32-31-220-041

R

R

Trent 500 EM TASK 72-32-31-200-801,

SUBTASK 72-32-31-220-068

R

R

Printed in Great Britain

RB.211−72−AF260

Page 6

Oct.17/06

R Jul.28/09
R (d) Rear face - Damage or marks.

Marks of no discernible

depth up to 0,013 mm

(0.0005 in.) in depth

R

R

R

Accept

Marks of 0,013 mm

(0.0005 in.) or greater

in depth

R

R

R

Reject.

R (e) Recess rear face - Damage or marks.

If frettage (galling )

on the recess rear face

is less than 4 square

mm per scallop

R

R

R

R

Accept

Frettage (galling)

marks on the recess

rear face are more than

4 square mm per scallop

R

R

R

R

Reject

If Frettage (galling)

on the recess rear face

is 0,051 mm (0.002 in.)

or less in depth

R

R

R

R

Repair, FRS6625 SPM TASK

70-42-11-300-004-003

R

R

If Frettage (galling)

on the recess rear face

is more than 0,051 mm

(0.002 in.) in depth

R

R

R

R

Reject

R (f) Recess inside diameter - Damage or marks. Refer to:

R Trent 800 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-116

R Trent 700 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-005

R Trent 500 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-068

R (g) Inner diaphragm rear face - Damage or marks. Refer to:

R Trent 800 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-097

R Trent 700 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-041

R Trent 500 EM TASK 72-32-31-200-801, SUBTASK 72-32-31-220-068

Printed in Great Britain

RB.211−72−AF260

Page 7

Oct.17/06

R Jul.28/09
(3) Install the balance weight and the clamp in the same position as where

they were removed from on the IP Compressor Drum.

R

R

R (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.

R

R

R

R

R

R

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.

R

R

R

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

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

R

R

(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.

R

R

R

R

(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.

R

R

R

R

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

Instructions 3.A.(1) are removed.

R

R

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

provided in Appendix 1.

R

R

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

the engine logbook.

R

R

Printed in Great Britain

RB.211−72−AF260

Page 8

Oct.17/06

R Jul.28/09
B

B

RECESS OUTSIDE

DIA (fig 4)

REAR FACE

(fig 3), (fig 5)

OUTER DIAPHRAGM

REAR FACE

RECESS REAR

FACE (fig 2)

INNER DIAPHRAGM

REAR FACE

RECESS

INSIDE DIA

BALANCE

LAND

A

A

def0013696

R

R Surfaces to be visually inspected

R Fig.1

Printed in Great Britain

RB.211−72−AF260

Page 9

Oct.17/06

R Jul.28/09
R

R Frettage (Galling) on the recess rear face (viewed using a mirror)

R Fig.2

Printed in Great Britain

RB.211−72−AF260

Page 10

Oct.17/06

R Jul.28/09
R

R Marks on the Rear Face and Visible Cracking

R Fig.3

Printed in Great Britain

RB.211−72−AF260

Page 11

Oct.17/06

R Jul.28/09
R

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 R

R Fig.4

Printed in Great Britain

RB.211−72−AF260

Page 12

Oct.17/06

R Jul.28/09
R

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 13

Oct.17/06

R Jul.28/09
R Non-Modification Service Bulletin RB211-72-AF260. Critical data sheet.

R Complete the following sheet for every shaft inspected.

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

R 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.28/09
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

R

R Appendix 1

Printed in Great Britain

RB.211−72−AF260

Appendix 1 - Page 2

Oct.17/06

R Jul.28/09