This document transmits Revision 2 to Service Bulletin RB211-71-AG698

Document History

Service Bulletin Revision Status Supplement Revision Status

Initial Issue Oct.14/11

Revision 1 Sep.28/12

Bulletin Revision 2

Remove Incorporate Reason for change

All pages of the

Service Bulletin

Pages 1 to 16 of the

Service Bulletin

To revise 1.A. Effectivity,

1.I. References, 3.A.

Accomplishment Instructions

and Appendix 2, correcting

air intake cowl serial

numbers and add reference

to Bombardier Service

Bulletin RB211-E4-A1003 (RR

RMR 11841).

Printed in Great Britain

Jun.20/13

RB211-535E4 SERIES PROPULSION SYSTEMS NON-MODIFICATION SERVICE BULLETIN

RB.211−71−AG698

Transmittal - Page 1 of 3

Signed Date

ALERT

ALERT
All pages of

Appendix 1

Pages 1 to 7 of

Appendix 1

To revise 1.A. Effectivity,

1.I. References, 3.A.

Accomplishment Instructions

and Appendix 2, correcting

air intake cowl serial

numbers and add reference

to Bombardier Service

Bulletin RB211-E4-A1003 (RR

RMR 11841).

All pages of

Appendix 2

Page 1 and 2 of

Appendix 2

To revise 1.A. Effectivity,

1.I. References, 3.A.

Accomplishment Instructions

and Appendix 2, correcting

air intake cowl serial

numbers and add reference

to Bombardier Service

Bulletin RB211-E4-A1003 (RR

RMR 11841).

All pages of

Appendix 3

Pages 1 to 6 of

Appendix 3

To revise 1.A. Effectivity,

1.I. References, 3.A.

Accomplishment Instructions

and Appendix 2, correcting

air intake cowl serial

numbers and add reference

to Bombardier Service

Bulletin RB211-E4-A1003 (RR

RMR 11841).

All pages of

Appendix 4

Pages 1 to 5 of

Appendix 4

To revise 1.A. Effectivity,

1.I. References, 3.A.

Accomplishment Instructions

and Appendix 2, correcting

air intake cowl serial

numbers and add reference

to Bombardier Service

Bulletin RB211-E4-A1003 (RR

RMR 11841).

Printed in Great Britain

RB.211−71−AG698

Transmittal - Page 2
LIST OF EFFECTIVE PAGES

The effective pages to this Service Bulletin following incorporation of Revision

2 are as follows:

Page Revision Number Revision Date

Bulletin

R 1 2 Jun.20/13

R 2 2 Jun.20/13

R 3 2 Jun.20/13

R 4 2 Jun.20/13

R 5 2 Jun.20/13

R 6 2 Jun.20/13

R 7 2 Jun.20/13

R 8 2 Jun.20/13

R 9 2 Jun.20/13

R 10 2 Jun.20/13

R 11 2 Jun.20/13

R 12 2 Jun.20/13

R 13 2 Jun.20/13

R 14 2 Jun.20/13

R 15 2 Jun.20/13

R 16 2 Jun.20/13

Appendix 1

R 1 2 Jun.20/13

R 2 2 Jun.20/13

R 3 2 Jun.20/13

R 4 2 Jun.20/13

R 5 2 Jun.20/13

R 6 2 Jun.20/13

R 7 2 Jun.20/13

Appendix 2

R 1 2 Jun.20/13

R 2 2 Jun.20/13

Appendix 3

R 1 2 Jun.20/13

R 2 2 Jun.20/13

R 3 2 Jun.20/13

R 4 2 Jun.20/13

R 5 2 Jun.20/13

R 6 2 Jun.20/13

Appendix 4

R 1 2 Jun.20/13

R 2 2 Jun.20/13

R 3 2 Jun.20/13

R 4 2 Jun.20/13

R 5 2 Jun.20/13

Printed in Great Britain

RB.211−71−AG698

Transmittal - Page 3
1. Planning Information

A. Effectivity

Boeing 757

RB211-535E4-37, -535E4-37/10, -535E4-37/11, -535E4-37/12, -535E4-37/14,

-535E4-37/15, -535E4-37/16, -535E4-37/17, -535E4-37/19, -535E4-37/20,

-535E4-37/21, -535E4-37/23, -535E4-37/24, -535E4-37/25, -535E4-37/39,

-535E4-37/43, -535E4-37/44 Propulsion Systems.

RB211-535E4-B-37, -535E4-B-37/15, -535E4-B-37/19, -535E4-B-37/20,

-535E4-B-37/21, -535E4-B-37/25, -535E4-B-37/35, -535E4-B-37/39, -535E4-B-37/41,

-535E4-B-37/44 Propulsion Systems.

RB211-535E4-C-37, -535E4-C-37/43 Propulsion Systems.

Air Intake Cowl Serial Numbers:

SB/RR/4001 to SB/RR/4484 (LJ30000 series part numbers: LJ35708, LJ35810,

LJ38036, LJ38066, LJ38068, LJ39447, LJ39448 (Pre SB 71-9634, Dyna-Rohr

standard)).

R (LJ50000 series part numbers: LJ50501, LJ50675, SB/RR/9001 to SB/RR/9786

LJ50678 and LJ50812 (SB 71-9634)).

Excluding air intake cowls that have been modified by a Supplementary type

certificate, identified by the following marking adjacent to the modification

plate on the rear bulkhead. Refer to Bombardier Service Bulletin

RB211-E4-A1003, latest revision, for instructions relating to these air intake

cowls.

R

R

R

Bombardier Aerospace

STC - CAA.21NE2.00023

FAA - ST02102NY

TCCA - SSA05-25

POWERPLANT - AIR INTAKE COWL - REPLACEMENT OF THE FORWARD BULKHEAD ASSEMBLY, THERMAL

ANTI-ICE (TAI) SPRAY RING ASSEMBLY AND ATTACHMENT FITTINGS - NON-MODIFICATION SERVICE

BULLETIN - NON - MOD.71-AG698

Printed in Great Britain

RB.211−71−AG698

Page 1 of 16

R Oct.14/11

Jun.20/13
B. Reason

There is a known in-service issue relating to cracking of the forward bulkhead

web, web stiffeners, attachment angles, and to a lesser extent, on the Thermal

Anti Ice (TAI) spray ring affecting the RB211-535E4, 535E4-B and 535E4-C air

intake cowls (refer to Fig.1 and Fig.2). This cracking is typically found

during shop visits for incidental damage. A detailed assessment of these

findings concluded there is a need to replace the affected components with new

to maintain serviceability. Further analysis concluded that this issue is

deemed to be life related; therefore there is a need to remove and replace the

affected components within a prescribed timescale starting with those units

introduced into service first.

This Non-Modification Service Bulletin (NMSB) instructs the removal of the air

intake cowl and replacement of the forward bulkhead assembly, the TAI spray

ring and its associated attachment fittings before the air intake is allowed to

be returned to service. Operators are also requested to provide details of the

findings to further aid problem understanding.

R Modification(s) are being processed in order to address this issue.

R Revision 1 of this NMSB was issued to include minor non-technical changes.

Revision 2 of this NMSB is issued to correct the air intake cowl serial numbers

in 1.A.Effectivity, 3.A Accomplishment Instructions and Appendix 2, amend text

to include reference to Bombardier Service Bulletin RB211-E4-A1003 in

1.A.Effectivity and Appendix 2, add Bombardier Service Bulletin RB211-E4-A1003

in 1.I. Reference.

R

R

R

R

R

C. Description

This NMSB instructs the removal of the air intake cowl from the engine and

replacement of the air intake cowl forward bulkhead assembly; TAI spray ring

and attachment fittings with new in order to maintain serviceability.

In order to assist Rolls-Royce and Bombardier Aerospace-Shorts, it is

recommended that the operator advise their assigned Rolls-Royce Field Service

Office (FSO) and Bombardier Aerospace-Shorts of NMSB accomplishment. To support

future analysis, operators are also requested to provide details of the

findings, using forms provided in Appendix 1.

D. Compliance

ALERT

This NMSB is anticipated to be the subject of an FAA Airworthiness Directive.

(1) For air intake cowls listed in Appendix 2 that are still in-service, carry

out the procedure, as defined in 3. Accomplishment Instructions, within

the timescales provided in Appendix 2.

Printed in Great Britain

RB.211−71−AG698

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(2) If the air intake was disassembled during a previous shop visit and it can

be shown that repair of the air intake introduced a new complete forward

bulkhead assembly as per parts list defined in step (a) or (b) below,

subsequent replacement of the complete forward bulkhead assembly can be

delayed and performed within 144 months from the date of last replacement.

(a) For Pre SB71-9634 standards - RB211-71-AG698-E4KIT fitted or all the

parts listed in Appendix 3.

(b) For SB71-9634 standards - RB211-71-AG698-E4BKIT fitted or all the

parts listed in Appendix 4.

This NMSB is applicable to in-shop embodiment.

E. Approval

This Non-Modification Service Bulletin has been reviewed by the Federal

Aviation Administration (FAA) and the FAA finds it acceptable.

This NMSB has been approved by the Boeing Commercial Airplane Company.

F. Manpower

(1) Time to remove nose cowl from engine

6 hours

(2) Time to restore nose cowl to serviceable condition

240 hours

(3) Time to restore-install nose cowl on engine

6 hours

G. Material Price and Availability

The parts required to accomplish this Non-Modification Service Bulletin may be

procured from operator stock or purchased as single line items as shown in

Appendix 3 and 4. Alternatively, the following kits are available obtained by

contacting Bombardier at the following addresses:

RB211-71-AG698-E4KIT (for Pre SB71-9634 standards)

RB211-71-AG698-E4BKIT (for SB71-9634 standards)

(1) Bombardier Customer Services

Short Brothers PLC

PO Box 241

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Belfast BT3 9DZ

Northern Ireland

Att: Spares Sales

Phone: +44 2890 733700

Fax: +44 2890 733839

E Mail: bfs_spares_sales@aero.bombardier.com

(2) Bombardier Customer Services

Dallas MRO

4039 Rock Quarry Road, Suite 600

Dallas, Texas

TX 75211

U.S.A

Phone: 214-331-9400

Fax: 214-331-9401

H. Tooling Price and Availability

None

I. References

(1) RB211-535, LJ30000 Series Nose Cowl Maintenance Data (Component

Maintenance Manual, 71-11-30).

(2) RB211-535, LJ50000 Series Nose Cowl Maintenance Data (Component

Maintenance Manual, 71-11-50).

(3) FRS7130 Disassembly/Assembly of Air Intake Cowl (Pre SB 71-9634, Dyna-Rohr

standard). TASK 71-11-30-300-819-A01.

(4) FRS7131 - Disassembly/Assembly of Air Intake Cowl (SB71-9634, SB 71-D143).

TASK 71-11-50-300-813-A01.

(5) FRS7132 - Replacement of the Rear Angle, (Pre SB 71-9634) Front Bulkhead.

TASK 71-11-30-300-821-A01.

(6) FRS7134 - Install and Remove the Front Bulkhead/Spray Ring Assembly (Pre

SB 71-9634). TASK 71-11-30-300-823-A01.

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(7) FRS7136 - Replace the Front Bulkhead Diaphragm (SB 71-9634). TASK

71-11-50-300-815-A01.

(8) FRS7137 - Replace the Front Bulkhead Diaphragm (Pre SB 71-9634). TASK

71-11-30-300-824-A01.

(9) FRS7145 - Replace Inner and Outer Front Angles, Lipskin Assembly (Pre SB

71-9634). TASK 71-11-30-300-828-A01.

(10) FRS7145 - Replace Inner and Outer Front Angles, Lipskin Assembly (SB

71-9634). TASK 71-11-50-300-822-A01.

(11) FRS7150 - Replace the Rear Angle (SB 71-9634). TASK 71-11-50-300-826-A01.

(12) FRS7152 - Replace Stiffeners and Buttstraps, Front Bulkhead Removed (Pre

SB 71-9634). TASK 71-11-30-300-830-A01.

(13) FRS7152 - Replace Stiffeners and Buttstraps, Front Bulkhead Removed (SB

71-9634). TASK 71-11-50-300-828-A01.

(14) FRS7153 - Remove and Install the Front Bulkhead/Spray Ring Assembly (SB

71-9634). TASK 71-11-50-300-829-A01.

(15) FRS7154 - Remove and Replace the Thermal Anti Icing (T.A.I) Spray Ring

Assembly (Pre SB 71-9634). TASK 71-11-30-300-831-A01.

(16) FRS7154 - Remove and Replace the Thermal Anti Icing (T.A.I) Spray Ring

Assembly (SB 71-9634). TASK 71-11-50-300-830-A01.

(17) FRS7199 - Disassembly/Assembly of Air Intake Cowl SB 71-9634, Pre SB

71-D143. TASK 71-11-50-300-831-A01.

(18) RB211-535 Engine Manual, 71-11-03.

(19) RB211-535 Engine Manual, 71-00-31 Remove/Install Inlet Cowl

(20) Aircraft Maintenance Manual, 71-11-01- Removal/Installation.

(21) Overhaul Materials Manual, OMat.

(22) Boeing 757 Non-Destructive Test Manual, Part 1 chapter 51-05.

R (23) Bombardier Service Bulletin RB211-E4-A1003, latest revision.

Printed in Great Britain

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2. Material Information

A. Consumable Materials

OMat No. Description Availability

OMat 150 Acetone (CH3)2CO Commercially Available

(Commercial grade 0-A-51)

OMat 2/101 Absorbent Cloth,

lint-free

Commercially Available

OMat 2/114 Gloves, lint-free Commercially Available

NOTE: To identify consumable materials, refer to Overhaul Materials Manual.

OMat.

Printed in Great Britain

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3. Accomplishment Instructions

A. Remove the air intake cowl by referring to current overhaul or maintenance

procedures (Engine Manual, 71-00-31 - Removal or Aircraft Maintenance Manual,

71-11-01- Removal/Installation).

B. Replace the forward bulkhead assembly, TAI spray ring assembly, and attachment

fittings.

WARNING: KEEP FLAMES AND ELECTRICAL EQUIPMENT THAT IS NOT FLAMEPROOF OUT OF THE

REPAIR AREA. MATERIALS USED ARE FLAMMABLE. INJURY MAY OCCUR.

WARNING: SOLVENT CLEANERS ARE FLAMMABLE AND THEIR VAPOURS ARE HARMFUL. USE IN A

WELL VENTILATED AREA. AVOID PROLONGED BREATHING OF VAPOURS OR PROLONGED

OR REPEATED CONTACT WITH SKIN. HIGH CONCENTRATIONS MAY CAUSE IMPAIRED

JUDGEMENT. PROTECTIVE GLOVES SHOULD BE WORN DURING USE. SOLVENT MAY

CAUSE DERMATITIS BY REMOVING SKIN OILS. PRIOR TO USE OF THIS PRODUCT,

READ THE 'MATERIALS SAFETY DATA SHEET' AND FOLLOW ALL LISTED SAFETY AND

HEALTH PRECAUTIONS.

CAUTION: IN ORDER TO REDUCE THE POTENTIAL FOR MULTIPLE ENGINE IN-FLIGHT SHUT

DOWN, POWER LOSS, OR OTHER ANOMALY 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, WERE POSSIBLE, TO PROMOTE THIS

RECOMMENDATION.

(1) There are three distinct modification standards of air intake cowl

configured for the RB211 535E4/E4-B Pre SB 71-D143 / E4B Post SB 71-D143.

(a) Pre SB 71-9634 standard intake cowls (Dyna-Rohr standard, part numbers

LJ35708, LJ39447, LJ35810, LJ39448, LJ38068, LJ38036 and LJ38066.

Nose cowl serial numbers SB/RR/4001 to SB/RR/4484

(b) SB 71-9634, Pre SB 71-D143, standard intake cowls (Bombardier

standard, part numbers LJ50501, LJ50675, LJ50678).

Nose cowl serial numbers SB/RR/9001 to SB/RR/9663 (unless SB 71-D143

has been incorporated in-service).

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(c) SB 71-9634, SB 71-D143 standard intake cowls (Bombardier standard,

part numbers LJ50678 and LJ50812).

R Nose cowl serial numbers SB/RR/9664 to SB/RR/9786. Also any nose cowls

listed in step (1)(b) above that has SB 71-D143 incorporated

in-service.

NOTE: The Dyna-Rohr standard intake cowls have a metal intake barrel

with insulation blanket. The Bombardier standard intake cowls

have a composite intake barrel with the insulation blanket

deleted.

(2) Having confirmed the modification standard of the air intake cowl, replace

the forward bulkhead assembly, TAI spray ring assembly and associated

attachment fittings with new in accordance with the applicable Component

Maintenance Manual (CMM) tasks.

(a) Pre SB 71-9634 standard intake cowls (Dyna-Rohr standard, part numbers

LJ35708, LJ39447, LJ35810, LJ39448, LJ38068, LJ38036 and LJ38066).

Nose cowl serial numbers SB/RR/4001 to SB/RR/4484

(i) Disassemble the air intake cowl in accordance with CMM Task

71-11-30-300-819-A01 (FRS7130). Do subtask 71-11-30-99F-034-A01

through to subtask 71-11-30-350-082-A01 only.

NOTE: Any parts referred to below that are to be discarded should

be stored until repair is complete as in some occasions the

old part may need to be used as a reference.

(ii) Remove and discard the forward bulkhead and spray ring assembly

in accordance with CMM Task 71-11-30-300-823-A01 (FRS7134).

(iii) Remove and discard old inner and outer rear angles in

accordance with CMM Task 71-11-30-300-821-A01 (FRS7132).

(iv) Remove and discard old inner and outer front angles, remove and

retain lipskin assembly in accordance with CMM Task

71-11-30-300-828-A01 (FRS7145).

(v) Replace the complete forward bulkhead assembly with Kit

RB211-71-AG698-E4KIT or replace ALL the component parts with

new, per Appendix 3, using the tasks below. Please note the

retained parts below which can be reinstalled onto the new

front bulkhead diaphragm, only if these parts are in

serviceable condition.

(1) New front bulkhead diaphragm in accordance with CMM Task

71-11-30-300-824-A01 (FRS7137).

A Install retained plate packing, LJ35501 and LJ35499.

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B Install retained seal, LJ35506.

C Install retained plate reinforcing, LJ38074 and LJ35500.

D Install the retained sling bracket assemblies, LJ26891.

E Install retained cover access plate, LJ38076.

(2) New stiffeners and buttstraps (front bulkhead removed) in

accordance with CMM Task 71-11-30-300-830-A01 (FRS7152).

(vi) Install the new inner and outer front angles, lipskin assembly

in accordance with CMM Task 71-11-30-300-828-A01 (FRS7145).

(vii) Assemble the new TAI spray ring in accordance with CMM Task

71-11-30-300-831-A01 (FRS7154).

(viii) Install the new front bulkhead/spray ring assembly in

accordance with CMM Task 71-11-30-300-823-A01 (FRS7134).

(ix) Install the new rear angles - front bulkhead in accordance with

CMM Task 71-11-30-300-821-A01 (FRS7132).

(x) Reassemble the air intake cowl in accordance with CMM Task

71-11-30-300-819-A01 (FRS7130). Do subtask 71-11-30-350-084-A01

through to subtask 71-11-30-220-033-A01 only.

(b) SB 71-9634, Pre SB 71-D143, standard intake cowls (part numbers

LJ50501, LJ50675 and LJ50678).

Nose cowl serial numbers SB/RR/9001 to SB/RR/9663 (unless SB 71-D143

has been incorporated in-service).

(i) Disassemble the air intake cowl in accordance with CMM Task

71-11-50-300-831-A01 (FRS7199). Do subtask 71-11-50-99F-090-A01

through to subtask 71-11-50-350-261-A01 only.

NOTE: Any parts referred to below that are to be discarded should

be stored until repair is complete as in some occasions the

old part may need to be used as a reference.

(ii) Remove and discard old forward bulkhead and spray ring assembly

in accordance with CMM Task 71-11-50-300-829-A01 (FRS7153).

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(iii) Remove and discard old inner and outer rear angles in

accordance with CMM Task 71-11-50-300-826-A01 (FRS7150).

(1) If cracking or holing of the front bulkhead diaphragm is

found, inspect the backing sheet of all the air intake cowl

acoustic panels, for evidence of disbonds, using the tap test

procedure. Refer to the Boeing 757 NDT Manual, part 1 chapter

51-05. Visually inspect the backing sheet of all the air

intake cowl acoustic panels for evidence of heat

discoloration.

NOTE: An operator who has found disbonds or heat

discoloration in any acoustic panel is asked to

contact Bombardier Customer Services Technical

Helpline: +44 7850 77 0826,

(shorts.support@aero.bombardier.com) for further

disposition.

(iv) Remove and discard old inner and outer front angles, remove and

retain lipskin assembly in accordance with CMM Task

71-11-50-300-822-A01 (FRS7145).

(v) Replace the complete forward bulkhead assembly with Kit

RB211-71-AG698-E4BKIT or replace ALL the component parts with

new, per Appendix 4, using the tasks below. Please note the

retained parts below which can be reinstalled onto the new

front bulkhead diaphragm, only if these parts are in

serviceable condition.

(1) New front bulkhead diaphragm in accordance with CMM Task

71-11-50-300-815-A01 (FRS7136).

A Install retained plate packing, LJ50629.

B Install retained machined doubler, LJ50632.

C Install retained seal housing, LJ50631.

D Install the retained shroud fitting, LJ50633.

E Install retained sling bracket assemblies, LJ26893.

F Install retained access cover, LJ38076.

(2) New stiffeners and buttstraps (front bulkhead removed) in

accordance with CMM Task 71-11-50-300-828-A01 (FRS7152).

(vi) Install the new inner and outer front angles, lipskin assembly

in accordance with CMM Task 71-11-50-300-822-A01 (FRS7145).

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(vii) Assemble the new TAI spray ring in accordance with CMM Task

71-11-50-300-830-A01 (FRS7154).

(viii) Install the new front bulkhead/spray ring assembly in

accordance with CMM Task 71-11-50-300-829-A01 (FRS7153).

(ix) Install the new rear angles - front bulkhead in accordance with

CMM Task 71-11-50-300-826-A01 (FRS7150).

(x) Reassemble the air intake cowl in accordance with CMM Task

71-11-50-300-831-A01 (FRS7199). Do subtask 71-11-50-560-002-A01

through to subtask 71-11-50-220-098-A01 only.

(c) SB 71-9634, SB 71-D143, standard intake cowls (part numbers LJ50678

and LJ50812).

R Nose cowl serial numbers SB/RR/9664 to SB/RR/9786. Also any nose cowls

listed in step (1)(b) above that has SB 71-D143 incorporated

in-service.

(i) Disassemble the air intake cowl in accordance with CMM Task

71-11-50-300-813-A01 (FRS7131). Do subtask 71-11-50-99F-091-A01

through to subtask 71-11-50-350-274-A01 only.

NOTE: Any parts referred to below that are to be discarded should

be stored until repair is complete as in some occasions the

old part may need to be used as a reference.

(ii) Remove and discard old forward bulkhead and spray ring assembly

in accordance with CMM Task 71-11-50-300-829-A01 (FRS7153).

(iii) Remove and discard old inner and outer rear angles in

accordance with CMM Task 71-11-50-300-826-A01 (FRS7150).

(1) If cracking or holing of the front bulkhead diaphragm is

found, inspect the backing sheet of all the air intake cowl

acoustic panels, for evidence of disbonds, using the tap test

procedure. Refer to the Boeing 757 NDT Manual, part 1 chapter

51-05.

NOTE: An operator who has found disbonds in any acoustic

panel is asked to contact Bombardier Customer Services

Technical Helpline: +44 7850 77 0826,

(shorts.support@aero.bombardier.com) for further

disposition.

(iv) Remove and discard old inner and outer front angles, remove and

retain lipskin assembly in accordance with CMM Task

71-11-50-300-822-A01 (FRS7145).

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(v) Replace the complete forward bulkhead assembly with Kit

RB211-71-AG698-E4BKIT or replace ALL the component parts with

new, per Appendix 4, using the tasks below. Please note the

retained parts below which can be reinstalled onto the new

front bulkhead diaphragm, only if these parts are in

serviceable condition.

(1) New front bulkhead diaphragm in accordance with CMM Task

71-11-50-300-815-A01 (FRS7136).

A Install retained plate packing, LJ50629.

B Install retained machined doubler, LJ50632.

C Install retained seal housing, LJ50631.

D Install the retained shroud fitting, LJ50633.

E Install retained sling bracket assemblies, LJ26893.

F Install retained access cover, LJ38076.

(2) New stiffeners and buttstraps (front bulkhead removed) in

accordance with CMM Task 71-11-50-300-828-A01 (FRS7152).

(vi) Install the new inner and outer front angles, lipskin assembly

in accordance with CMM Task 71-11-50-300-822-A01 (FRS7145).

(vii) Assemble the new TAI spray ring in accordance with CMM Task

71-11-50-300-830-A01 (FRS7154).

(viii) Install the new front bulkhead/spray ring assembly in

accordance with CMM Task 71-11-50-300-829-A01 (FRS7153).

(ix) Install the new rear angles - front bulkhead in accordance with

CMM Task 71-11-50-300-826-A01 (FRS7150).

(x) Re-assemble the air intake cowl in accordance with CMM Task

71-11-50-300-813-A01 (FRS7131). Do subtask 71-11-50-560-004-A01

through to subtask 71-11-50-220-100-A01 only.

C. Install the air intake cowl by referring to current overhaul or maintenance

procedures (Engine Manual, 71-00-31 Installation or Aircraft Maintenance Manual

71-11-01, Removal/Installation.)

Printed in Great Britain

RB.211−71−AG698

Page 12

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D. A record of accomplishment is required.

(1) Record accomplishment of this Non-Modification Service Bulletin by

referring to local Service Bulletin tracking system procedures and metal

stamp, vibro etch or electro etch on the air intake cowl modification

plate that Non-Modification Service Bulletin RB211-71-AG698 has been done.

Printed in Great Britain

RB.211−71−AG698

Page 13

R Oct.14/11

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Air Intake Cowl Forward Bulkhead Assembly

Fig.1

Printed in Great Britain

RB.211−71−AG698

Page 14

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Air Intake Cowl Forward Bulkhead Web and TAI Spray Ring Assembly

Fig.2 (sheet 1 of 2)

Printed in Great Britain

RB.211−71−AG698

Page 15

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TAI Spray Ring Assembly, Attaching Parts

Fig.2 (sheet 2 of 2)

Printed in Great Britain

RB.211−71−AG698

Page 16

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Damage Record Sheets

Record accomplishment of this Non-Modification Service Bulletin by referring to

local Service Bulletin tracking system procedures.

Advise Bombardier Aerospace-Shorts and your assigned Rolls-Royce FSO of NMSB

accomplishment and results regardless of findings. Damage record sheets can be found

in Appendix 1.

Return the inspection record for Bombardier Aerospace-Shorts to the address that

follows:

FAO In-service Engineering

Customer Services

Bombardier Aerospace

PO Box 241

Belfast BT3 9DZ

Northern Ireland

Phone: +44 2890 733546

Fax: +44 2890 733253

Email: shorts.support@aero.bombardier.com

Also, please send a copy of the information to your assigned Rolls-Royce Field

Service Office (FSO).

APPENDIX 1

Printed in Great Britain

RB.211−71−AG698

Appendix 1 - Page 1 of 7

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Damage Record Sheet

Printed in Great Britain

RB.211−71−AG698

Appendix 1 - Page 2

R Oct.14/11

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Damage Record Sheet - Write the damage observed on forward bulkhead, stiffeners,

butt straps and bulkhead web

Fig.1 (sheet 1 of 5)

Printed in Great Britain

RB.211−71−AG698

Appendix 1 - Page 3

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Damage Record Sheet - Write the damage observed on bulkhead web

Fig.1 (sheet 2 of 5)

Printed in Great Britain

RB.211−71−AG698

Appendix 1 - Page 4

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Damage Record Sheet - Write the damage observed on forward inner and outer

attachment angles

Fig.1 (sheet 3 of 5)

Printed in Great Britain

RB.211−71−AG698

Appendix 1 - Page 5

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Damage Record Sheet - Write the damage observed on rear inner and outer attachment

angles

Fig.1 (sheet 4 of 5)

Printed in Great Britain

RB.211−71−AG698

Appendix 1 - Page 6

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Damage Record Sheet - Write the damage observed on links at spray ring and bulkhead

Fig.1 (sheet 5 of 5)

Printed in Great Britain

RB.211−71−AG698

Appendix 1 - Page 7

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The air intake cowls listed below are subject to replacement of the forward

bulkhead, TAI spray ring assembly and attachment fittings in accordance with this

NMSB within the timescales provided.

Air Intake Cowl Serial Numbers NMSB Implementation Timescale

4001 to 4121 Within 12 months of NMSB issue date, and

within every 144 months thereafter.

4122 to 4241 Within 24 months of NMSB issue date, and

within every 144 months thereafter.

4242 to 4361 Within 36 months of NMSB issue date, and

within every 144 months thereafter.

4362 to 4481 Within 48 months of NMSB issue date, and

within every 144 months thereafter.

4482 to 4484 and 9001 to 9117 Within 60 months of NMSB issue date, and

within every 144 months thereafter.

9118 to 9237 Within 72 months of NMSB issue date, and

within every 144 months thereafter.

9238 to 9357 Within 84 months of NMSB issue date, and

within every 144 months thereafter.

9358 to 9477 Within 96 months of NMSB issue date, and

within every 144 months thereafter.

9478 to 9597 Within 108 months of NMSB issue date,

and within every 144 months thereafter.

9598 to 9717 Within 120 months of NMSB issue date,

and within every 144 months thereafter.

R 9718 to 9786 Within 132 months of NMSB issue date,

and within every 144 months thereafter.

APPENDIX 2

Printed in Great Britain

RB.211−71−AG698

Appendix 2 - Page 1 of 2

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NOTE: Excluding air intake cowls that have been modified by a Supplementary type

certificate, identified by the following marking adjacent to the modification

plate on the rear bulkhead. Refer to Bombardier Service Bulletin

RB211-E4-A1003, latest revision, for instructions relating to these air

intake cowls.

R

R

R

Bombardier Aerospace

STC - CAA.21NE2.00023

FAA - ST02102NY

TCCA - SSA05-25

Printed in Great Britain

RB.211−71−AG698

Appendix 2 - Page 2

R Oct.14/11

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Pre SB 71-9634 (Dyna-Rohr Standard)

Part No. Description Qty

LJ12671 Sleeve 12

LJ17145 Bolt-Special 12

LJ20012 Main Link Assy 6

LJ20252 Spacer 8

LJ20256 Inter Link Assy 4

LJ21739 Trap Washer 10

LJ21874 Bolt 11

LJ21875 Bolt 1

LJ21876 Bolt D-Head 8

LJ22350 Bracket Main Support 6

LJ22353 Bracket Inter Support 4

LJ27101 Bolt 4

LJ33601 Plate Retaining 2

LJ33602 Plate Retaining 2

LJ33698 Plate Packing 4

APPENDIX 3

Printed in Great Britain

RB.211−71−AG698

Appendix 3 - Page 1 of 6

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Part No. Description Qty

LJ33699 Plate Packing 4

LJ33943 Plate Packing 2

LJ35310 Half Ring (B Way) 2

LJ35361 TAI Ring Assy 1

LJ35431 Diaphragm, Segment 1

LJ35432 Diaphragm, Upper RH 1

LJ35433 Diaphragm, Lower LH 1

LJ35434 Diaphragm, Lower RH 1

LJ35435 Rib Stiffener 2

LJ35436 Stiffener Top Hat 1

LJ35437 Rib Stiffener 2

LJ35439 Rib Stiffener 4

LJ35440 Rib Stiffener 1

LJ35441 Rib Stiffener 1

LJ35442 Rib Stiffener 1

LJ35444 Rib Stiffener 1

Printed in Great Britain

RB.211−71−AG698

Appendix 3 - Page 2

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Part No. Description Qty

LJ35445 Rib Stiffener 2

LJ35446 Rib Stiffener 2

LJ35447 Rib Stiffener 4

LJ35448 Rib Stiffener 3

LJ35450 Rib Stiffener 1

LJ35451 Rib Stiffener 2

LJ35452 Rib Stiffener 1

LJ35453 Rib Stiffener 1

LJ35454 Stiffener Top Hat 2

LJ35455 Rib Stiffener 1

LJ35456 Stiffener Rib 1

LJ35457 Stiffener Top Hat 1

LJ35459 Rib Stiffener 1

LJ35460 Rib Stiffener 1

LJ35462 Rib Stiffener 1

LJ35465 Rib Stiffener 1

Printed in Great Britain

RB.211−71−AG698

Appendix 3 - Page 3

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Part No. Description Qty

LJ35466 Stiffener Top Hat 1

LJ35467 Rib Stiffener 1

LJ35468 Rib Stiffener 1

LJ35469 Rib Stiffener 1

LJ35470 Rib Stiffener 1

LJ35488 Buttstrap 1

LJ35489 Buttstrap 1

LJ35490 Plate 2

LJ35491 Buttstrap 1

LJ35492 Joint Plate 1

LJ35493 Buttstrap 2

LJ35499 Plate Packing 1

LJ35500 Reinforcing Plate 1

LJ35501 Plate Packing 1

LJ35506 Bulkhead Seal 1

LJ38074 Reinforcing Plate 1

Printed in Great Britain

RB.211−71−AG698

Appendix 3 - Page 4

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Part No. Description Qty

LJ38075 Rib Stiffener 1

LJ33637 Packer 2

LJ35471 Angle 1

LJ35472 Angle Joint 1

LJ35473 Angle Joint 1

LJ35474 Joint Angle 1

LJ35475 Attachment Angle Rear 1

LJ35476 Angle Outer Rear 1

LJ35477 Angle ATT FWD Outer 1

LJ35478 Angle Attachment FWD Outer 1

LJ35479 Angle 2

LJ35480 Inner Joint Angle 2

LJ35482 Angle Inner Rear 1

LJ35483 Angle Inner Rear 1

LJ35484 Joint Angle FWD Inner 1

LJ35485 Joint Angle FWD Inner 1

Printed in Great Britain

RB.211−71−AG698

Appendix 3 - Page 5

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Part No. Description Qty

LJ35502 Packer 1

LJ35503 Packer 1

LJ35504 Shim 1

LJ35505 Shim 1

Printed in Great Britain

RB.211−71−AG698

Appendix 3 - Page 6

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SB 71-9634 (Bombardier Standard)

Part No. Description Qty

LJ12671 Sleeve 12

LJ17145 Bolt-Special 8

LJ20012 Main Link Assy 6

LJ20252 Spacer 8

LJ20256 Inter Link Assy 4

LJ21739 Trap Washer 10

LJ21874 Bolt 11

LJ21875 Bolt 1

LJ21876 Bolt D-Head 8

LJ22350 Bracket Main Support 6

LJ22353 Bracket Inter Support 4

LJ27101 Bolt 4

LJ33601 Plate Retaining 2

LJ33602 Plate Retaining 2

LJ33698 Plate Packing 4

APPENDIX 4

Printed in Great Britain

RB.211−71−AG698

Appendix 4 - Page 1 of 5

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Part No. Description Qty

LJ33699 Plate Packing 4

LJ35310 Half Ring (B Way) 2

LJ35432 Diaphragm, Upper RH 1

LJ35433 Diaphragm, Lower LH 1

LJ35434 Diaphragm, Lower RH 1

LJ35435 Rib Stiffener 2

LJ35436 Stiffener Top Hat 1

LJ35437 Rib Stiffener 2

LJ35439 Rib Stiffener 4

LJ35440 Rib Stiffener 1

LJ35441 Rib Stiffener 1

LJ35442 Rib Stiffener 1

LJ35444 Rib Stiffener 1

LJ35445 Rib Stiffener 2

LJ35446 Rib Stiffener 2

LJ35447 Rib Stiffener 4

Printed in Great Britain

RB.211−71−AG698

Appendix 4 - Page 2

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Part No. Description Qty

LJ35448 Rib Stiffener 3

LJ35450 Rib Stiffener 1

LJ35451 Rib Stiffener 2

LJ35452 Rib Stiffener 1

LJ35453 Rib Stiffener 1

LJ35454 Stiffener Top Hat 2

LJ35455 Rib Stiffener 1

LJ35456 Stiffener Rib 1

LJ35457 Stiffener Top Hat 1

LJ35459 Rib Stiffener 1

LJ35460 Rib Stiffener 1

LJ35462 Rib Stiffener 1

LJ35465 Rib Stiffener 1

LJ35466 Stiffener Top Hat 1

LJ35467 Rib Stiffener 1

LJ35468 Rib Stiffener 1

Printed in Great Britain

RB.211−71−AG698

Appendix 4 - Page 3

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Part No. Description Qty

LJ35469 Rib Stiffener 1

LJ35470 Rib Stiffener 1

LJ35488 Buttstrap 1

LJ35489 Buttstrap 1

LJ35490 Plate 2

LJ35491 Buttstrap 1

LJ35492 Joint Plate 1

LJ35493 Buttstrap 2

LJ50523 Stiffener Rib 1

LJ50545 Spray Ring 1

LJ50660 Plate, Packing 4

LJ50636 Diaphragm Segment 1

LJ33637 Packer 2

LJ35473 Angle Joint 1

LJ35474 Joint Angle 1

LJ35477 Angle Attachment FWD Outer 1

Printed in Great Britain

RB.211−71−AG698

Appendix 4 - Page 4

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Part No. Description Qty

LJ35478 Angle Attachment FWD Outer 1

LJ35480 Inner Joint Angle 2

LJ35484 Angle FWD Inner 1

LJ35485 Angle FWD Inner 1

LJ50537 Angle Joint Rear Inner 1

LJ35471 Angle 1

LJ35472 Angle Joint 1

LJ50538 Angle Joint Rear Inner 1

LJ35476 Angle Outer Rear 1

LJ50536 Angle ATT Rear Inner 1

LJ50627 Angle Outer Rear 1

LJ50535 Angle Inner Rear 1

Printed in Great Britain

RB.211−71−AG698

Appendix 4 - Page 5

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