LIST OF EFFECTIVE PAGES

The effective pages to this Service Bulletin following incorporation of Revision

1 are as follows:

Page Revision Number Revision Date

Bulletin

R 1 1 May 20/15

R 2 1 May 20/15

R 3 1 May 20/15

R 4 1 May 20/15

R 5 1 May 20/15

R 6 1 May 20/15

R 7 1 May 20/15

R 8 1 May 20/15

R 9 1 May 20/15

R 10 1 May 20/15

R 11 1 May 20/15

R 12 1 May 20/15

Appendix 1

R 1 1 May 20/15

R 2 1 May 20/15

R 3 1 May 20/15

Printed in Great Britain

RB.211−72−AJ035

Transmittal - Page 2
1. Planning Information

A. Effectivity

Airbus A330

RB211 TRENT 768, TRENT 772, TRENT 772B, TRENT 772C Engines as follows:

(1) Engine Serial Numbers from 41001 to 42330 which are Pre SB 72-H754

B. Reason

There have been a total of eleven unplanned engine removals caused by fracture

of the HP/IP turbine support internal oil feed tube (EIPC 72-51-24, 02-281) on

engines post SB 72-F227 standard.

The oil feed tube threaded end adaptor and sealing sleeve are designed to form

a sliding joint. If the sliding joint is restrained then the oil feed tube can

become compressed during thermal contraction of the turbine casing at the end

of the flight cycle. On each subsequent flight, the thermal growth and

contraction of the turbine casing relative to the oil tube, during the heating

and cooling phases of the flight cycle, applies a pull-push load cycle to the

tube, which can lead to low cycle fatigue fracture.

Investigation of the oil feed tube sealing sleeve (EIPC 72-51-23, 01-220) found

that one of the three different suppliers of this part (Supplier A) had

manufactured some sealing sleeves with the internal diameter below the drawing

minimum, which can cause binding at the sliding joint. All 'Supplier A' sealing

sleeves have been replaced through accomplishment of NMSB 72-AH673.

Following investigation of a recent event on an engine with a (Supplier B)

sealing sleeve fitted, it was established that some of the oil feed tube

adaptors (EIPC 72-51-24, 02-280) have been manufactured with the outer diameter

larger than drawing maximum, which can also cause binding at the sliding joint.

C. Description

This Non-Modification Service Bulletin (NMSB) instructs visual inspection of

manufacturing markings on the sealing sleeve, to identify whether the sealing

sleeve has previously been replaced in accordance with NMSB 72-AH673.

If the sealing sleeve markings show that it has not previously been replaced in

accordance with NMSB 72-AH673, this NMSB instructs replacement of the sealing

sleeve and external oil feed tube with SB 72-H754 parts, which alleviate

binding at the sliding joint.

ENGINE - HP/IP TURBINE BEARING SUPPORT - INSPECTION AND REPLACEMENT OF THE OIL FEED

TUBE SEALING SLEEVE - NON-MODIFICATION SERVICE BULLETIN - NON - MOD.72-AJ035

Printed in Great Britain

RB.211−72−AJ035

Page 1 of 12

May 11/15

R May.20/15
It is only necessary to carry out the action once in accordance with this NMSB

either on-wing or in-shop.

Revision 1 of this NMSB is issued to revise 1.D. Compliance to remove the

requirement to accomplish this NMSB prior to engine installation.

R

R

D. Compliance

ALERT

This Non-Modification Service Bulletin is anticipated to be the subject of an

EASA/FAA Airworthiness Directive.

(1) On-wing

Carry out the actions detailed in 3.A. Accomplishment Instructions at the

next convenient maintenance opportunity, within 24 months or 1600 engine

cycles (whichever occurs sooner), of the initial issue of this NMSB.

R

R

R

(2) In-shop

(a) Engines where the M51 module is undergoing a level 1 or level 2 shop

visit:

Carry out the actions detailed in 3.B. Accomplishment Instructions.

(b) Engines where the M51 module is undergoing a level 3 or level 4 shop

visit:

Carry out SB 72-H754.

E. Approval

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

under the authority of Design Organisation Approval EASA.21J.035 on May.7/15

and was re-approved on May.19/15.

R

R

F. Manpower

(1) On-wing:

(a) Time to inspect the sealing sleeve to confirm the batch number

0.25 hours (one person)

(b) Time to disconnect and remove the external HP/IP oil feed tube

0.25 hours (one person)

Printed in Great Britain

RB.211−72−AJ035

Page 2

May 11/15

R May.20/15
(c) Time to replace the sealing sleeve

0.5 hours (one person)

(d) Time to install the modified external oil feed tube and restore to a

serviceable condition

0.25 hours (one person)

(e) Ground running requirement

Fuel and oil leak test

NOTE: The leak test is only required if the oil feed tube is

disconnected.

(2) In-shop

(a) Time to inspect the sealing sleeve to confirm the batch number

0.25 hours (one person)

(b) Time to remove the external HP/IP oil feed tube and remove the sealing

sleeve

0.5 hours (one person)

G. Material Price and Availability

All materials required to accomplish NMSB 72-AJ035 are detailed in section 2.

Material Information

H. Tooling Price and Availability

(1) Torque wrench (up to 1500 lbfin.)

(2) Tooling/Consumables required for oil tube cutting procedure (Appendix 3):

(a) HU40179-1

(b) Portable electric drill - 230 RPM

(c) Pipe cutting tool or tube cropping tool (swarf-free cutting process)

(locally supplied)

(d) Vacuum cleaner - with 8mm diameter suction hose (locally supplied)

(e) Engine Oil (OMat 1011)

Printed in Great Britain

RB.211−72−AJ035

Page 3

May 11/15

R May.20/15
(3) Tooling required for sealing sleeve removal

(a) Impact extractor HU29255 with extraction adaptor HU45296

Or

(b) Facom U.49P6 expansion puller dia 18mm - 60mm

Facom U.53H3 expansion puller adaptor

Facom U.49AM slide hammer

Or

(c) Locally sourced equivalent hand tools

(d) Adjustable grips (locally supplied)

(e) Adjustable spanner (locally supplied)

I. References

(1) Rolls-Royce RB211 Service Bulletins:

(a) 72-F227

Engine - HP/IP Bearing Support - Introduction of an HP/IP Turbine

Bearings Support Structure with revised Oil and Air Service Tubes and

Associated Insulated Heatshield Covers

(b) 79-D102

Oil - Oil System Tubes and Fittings - Core Engine - Introduction of

revised HP/IP Turbine Structure Oil Tubes

(c) 72-H754

Engine - IP Turbine Case - Introduction of a revised Oil Feed Tube

Assembly with increased Radial Clearance between the Union Nut and

Sealing Sleeve

(2) Rolls-Royce RB211 Non-Modification Service Bulletin:

72-AH673

Engine - HP/IP Turbine Bearing Support - Inspection and replacement of the

Oil Feed Tube Sealing Sleeve - Non-Modification Service Bulletin

(3) Aircraft Maintenance Manual:

(a) Task 71-00-00-700-827-A, Test No.2 - Fuel and Oil Leak Test

Printed in Great Britain

RB.211−72−AJ035

Page 4

May 11/15

R May.20/15
(b) Task 70-51-00, PB 201, Torque Tightening Techniques

(c) Task 70-12-04-910-804-A, Locking Techniques - Wire Locking

(d) Task 78-30-00-010-803-A, Open the Thrust Reverser Cowl Doors

(e) Task 78-30-00-410-803-A, Close the Thrust Reverser Cowl Doors

(4) Engine Manual:

(a) Task 72-00-51-000-801, Remove the Tubes, the Electrical Harnesses and

the Components for Access to Remove the Intermediate Pressure (IP)

Turbine Module.

(b) Task 72-00-51-400-804, Install the Tubes, the Electrical Harnesses and

the Components for, Removed for Access on the Intermediate Pressure

(IP) Turbine Module.

(c) Task 72-51-20-000-801, Disassemble the Intermediate Pressure (IP)

Turbine Case and Vanes.

(d) Task 72-51-20-400-801, Assemble the Intermediate Pressure (IP) Case

and Vanes.

(e) Task 72-00-00-700-802, Test 2 - Fuel and Oil Leak Test

(5) Standard Practices Manual

(a) 70-51-00, Procedures used to Torque Tighten Components

(b) 70-12-04, Procedures Used to Lock Threaded Parts - LOCK THREADED PARTS

Printed in Great Britain

RB.211−72−AJ035

Page 5

May 11/15

R May.20/15
2. Material Information

A. The following parts are required to accomplish this NMSB if inspection confirms

that the sealing sleeve has not previously been replaced in accordance with

NMSB 72-AH673:

EIPC,

Fig/Item

Part No. Qty Description Mat

79-22-49,

02-100

KH28324 1 External Oil Feed Tube -

72-51-23,

01-220

KH28323 1 Oil Feed Sealing Sleeve -

Printed in Great Britain

RB.211−72−AJ035

Page 6

May 11/15

R May.20/15
3. Accomplishment Instructions

A. On-wing

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

SHUTDOWN. THE ENGINE CAN STAY HOT FOR ALMOST ONE HOUR.

WARNING: YOU MUST NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN

CAUSE INJURY. IF YOU GET AN INJURY, PUT IT IN COLD WATER FOR 10

MINUTES. THEN GET MEDICAL AID.

CAUTION: IN ORDER TO REDUCE THE POTENTIAL FOR MULTIPLE ENGINE EVENTS DUE TO

MAINTENANCE ERROR, ROLLS-ROYCE 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 AT THE SAME TIME, ROLLS-ROYCE RECOMMENDS THAT

ADDITIONAL CONTROLS ARE APPLIED IN ORDER TO ENSURE THAT MAINTENANCE

TASKS HAVE BEEN COMPLETED AS DEFINED. MAINTENANCE GUIDELINES SHOULD BE

REVISED, WHERE POSSIBLE, TO PROMOTE THIS RECOMMENDATION.

(1) If available via maintenance records, determine if engine has a sealing

sleeve with identity marking '102013', '102013L' or '112013'. If the

sealing sleeve has been replaced during accomplishment of NMSB 72-AH673,

then this guarantees the sealing sleeve will have the marking 102013,

102013L or 112013.

(a) If the maintenance records show that the sealing sleeve has identity

marking '102013', '102013L' or '112013' then proceed to step (6).

(b) If the sealing sleeve does not have identity marking '102013',

'102013L' or '112013' then proceed to step (2).

(2) Gain access:

(a) Open the thrust reverser cowl doors in accordance with Aircraft

Maintenance Manual, Task 78-30-00-010-803-A.

(b) Locate the oil feed tube (Part No. FW14193 or KH28324) and the oil

feed tube sealing sleeve (Part No. FW15003 or KH28323) at the 9

o'clock position when looking from the rear of the engine. Refer to

Fig.1.

(3) Inspect the markings on the sealing sleeve (Part No. FW15003 or KH28323)

in-situ.

(a) If the sealing sleeve has part number KH28323 the proceed to step (6).

Printed in Great Britain

RB.211−72−AJ035

Page 7

May 11/15

R May.20/15
(b) If the sealing sleeve has part number FW15003, then check for

identification number:

(i) If the sealing sleeve has identification marking '102013',

'102013L' or '112013' (refer to Fig.2a and Fig.2b), then

proceed to step (6).

(ii) If the sealing sleeve does not have identification marking

'102013', '102013L' or '112013' (refer to Fig.2a and Fig.2b),

then proceed to step (4).

(iii) If the sealing sleeve markings cannot be identified then

proceed to step (4).

CAUTION: DO NOT EXCEED 1500 LB/IN TORQUE WHEN DISCONNECTING THE UNION

NUT. EXCEEDING THIS TORQUE VALUE MAY DAMAGE THE INTERNAL OIL

TUBE

CAUTION: TOOLING CAN BE USED DURING SEALING SLEEVE REMOVAL, BUT TOOLING

MUST NOT BE USED DURING SEALING SLEEVE INSTALLATION. SEALING

SLEEVES ARE INSTALLED USING ONLY FINGER PRESSURE.

(4) Accomplish in accordance with 3.C. On-wing Accomplishment Instructions of

SB 72-H754 (refer to 1.I. References).

NOTE: Based on previous service experience, the HP/IP oil feed tube union

nut is not susceptible to seizure. If the union nut cannot be

disconnected, carry out the union nut cutting procedure in Appendix

1 to remove the union nut.

NOTE: The sealing sleeve bore diameter can vary slightly due to

tolerances at manufacturing. If a sealing sleeve cannot be

installed using only finger pressure, then install a different

sealing sleeve with part number KH28323 until such time as one can

be fitted with finger pressure only.

NOTE: The correct procedure for torque tightening the tube connectors is

provided by AMM 70-51-00. This task instructs a sequence of torque

tightening the union nut, then releasing it half a turn, and

repeating several times, to ensure correct bedding of the union.

(5) Restore the engine to a serviceable condition.

(a) Close the thrust reverser cowl doors in accordance with Aircraft

Maintenance Manual 78-30-00.

Printed in Great Britain

RB.211−72−AJ035

Page 8

May 11/15

R May.20/15
(b) Carry out the fuel and oil leak test in accordance with AMM 71-00-00,

Test 2, Fuel and Oil Leak Test.

NOTE: 1. It is particularly important that developer is applied

around each disturbed tube union, and examined carefully

after the test.

2. The leak test is only required if the oil feed tube was

disconnected during this procedure.

(6) Accomplishment of this Non-Modification Service Bulletin and if applicable

accomplishment of SB 72-H754 should be recorded in the engine logbook.

B. In-shop

(1) Locate the oil feed tube (EIPC 79-22-49, 02-100) at the 9 o'clock position

when looking from the rear of the engine. Refer to Fig.1.

(2) Inspect the markings on the sealing sleeve (EIPC 72-51-23, 01-220, Part

No.FW15003 or KH28323) in-situ.

(a) If the sealing sleeve has part number KH28323 then proceed to step

(4).

(b) If the sealing sleeve has part number FW15003, then check for batch

identification number:

(i) If the sealing sleeve has identification marking '102013',

'102013L' or '112013' (refer to Fig.2a and Fig.2b), then

proceed to step (4).

(ii) If the sealing sleeve does not have identification marking

'102013', '102013L' or '112013' (refer to Fig.2a and Fig.2b),

then proceed to step (3).

(iii) If the sealing sleeve markings cannot be identified from the

sleeve markings then continue with step (3).

Printed in Great Britain

RB.211−72−AJ035

Page 9

May 11/15

R May.20/15
CAUTION: TOOLING CAN BE USED DURING SEALING SLEEVE REMOVAL, BUT TOOLING

MUST NOT BE USED DURING SEALING SLEEVE INSTALLATION. SEALING

SLEEVES ARE INSTALLED USING ONLY FINGER PRESSURE.

(3) Accomplish in accordance with SB 72-H754 (refer to 1.I. References), 3.B.

In-shop Accomplishment Instructions.

NOTE: The sealing sleeve bore diameter can vary slightly due to

tolerances at manufacturing. If a sealing sleeve cannot be

installed using only finger pressure, then install a different

sealing sleeve with part number KH28323 until such time as one can

be fitted with finger pressure only.

NOTE: The correct procedure for torque tightening the tube connectors is

provided by AMM 70-51-00. This task instructs a sequence of torque

tightening the union nut, then releasing it half a turn, and

repeating several times, to ensure correct bedding of the union.

(4) Accomplishment of this Non-Modification Service Bulletin and if applicable

accomplishment of SB 72-H754 should be recorded in the engine logbook.

Printed in Great Britain

RB.211−72−AJ035

Page 10

May 11/15

R May.20/15
Oil Feed Tube (9 o'clock position on the IP Turbine Casing)

Fig.1

Printed in Great Britain

RB.211−72−AJ035

Page 11

May 11/15

R May.20/15
Printed in Great Britain

RB.211−72−AJ035

Page 12

May 11/15

R May.20/15
Procedure for Cutting off a Seized Union Nut

1. Effectivity

A. This procedure is applicable to the external HP/IP Turbine Oil Tube Post SB

79-D102 standard.

2. Description of Procedure

The procedure cuts through the thrust shoulder of the union nut. This removes

the axial load from the union nut threads, which reduces the torque required to

unscrew the nut. The union nut and external tube are destroyed in the

procedure. The depth stop on the cutting tool prevents the cutting tool from

making contact with the internal oil tube end fitting, so the internal oil tube

is not damaged by this procedure.

3. Tools and Consumables

Refer to 1.H. Tooling Prices and Availability

4. Material Requirements

Refer to 2. Material Information

5. Procedure

A. Disconnect the external oil tube connector and all tube clips.

B. Cut the external tube a maximum length of 30 mm from the union nut, refer

to Fig.3. Use a manual pipe cutting tool or a cropping tool to avoid making

any cutting debris.

C. If the tool is open ended, close the end of the cut tube using a temporary

bung, to prevent ingress of contamination.

D. Lubricate the shoulder of the union nut with clean engine oil.

CAUTION: WHEN THE CUTTING TOOL BREAKS THROUGH THE UNION NUT SHOULDER, THE NUT

CAN TURN WITH THE CUTTING TOOL. WHEN THIS HAPPENS, STOP CUTTING

IMMEDIATELY, BECAUSE IF THE NUT IS ROTATED THROUGH SEVERAL TURNS, THE

CUTTING TOOL CAN MAKE CONTACT WITH THE INTERNAL OIL TUBE END FITTING

E. Cut through the shoulder of the union nut, using the hole cutting tool and

the electric drill.

F. Remove all swarf, using the vacuum cleaner.

G. Remove the union nut. Do not allow any debris to drop into the open end of

the internal oil tube.

APPENDIX 1

Printed in Great Britain

RB.211−72−AJ035

Appendix 1 - Page 1 of 3

May 11/15

R May.20/15
H. Clean the internal oil tube end fitting. Inspect the end fitting to confirm

that there is no damage.

Printed in Great Britain

RB.211−72−AJ035

Appendix 1 - Page 2

May 11/15

R May.20/15
Union Nut Cutting Tool shown in-situ on the HP/IP Turbine External Oil Tube

Fig.3

Printed in Great Britain

RB.211−72−AJ035

Appendix 1 - Page 3

May 11/15

R May.20/15