This document transmits the Initial Issue of Service Bulletin SB-BR700-72-101683. This Service Bulletin can be embodied "At Overhaul/Shop Visit". Service Bulletin Initial Issue Remove Incorporate Reason for change Pages 1 to 9 of the Service Bulletin. Initial Issue.**Printed in Great Britain** Sep.20/10

BR700 SERIES PROPULSION SYSTEM SERVICE BULLETIN



# SB−BR700−72−101683 Transmittal - Page 1 of 11. Planning Information A. Effectivity BR700-715A1-30, BR700-715B1-30 and BR700-715C1-30 Engines. For all engines which do not have the Service Bulletin SB-BR700-72-101155 standard incorporated. Non-Modular. B. Concurrent Requirements
None. C. Reason (1) Problem Low Pressure (LP) compressor booster rotors of pre Service Bulletin SB-BR700-72-101155 standard do not fulfill all engineering requirements. The machining of the 24 front flange scallops and the peening process of this area at the LP compressor booster rotors have not been done as originally designed. This could have an influence on the predicted safe cyclic life of these LP compressor booster rotors. (2) Evidence This was found during engineering reviews and supported by part inspections after rig testing. (3) Substantiation The changes introduced by this Service Bulletin were the subject of satisfactory engineering analysis and tests. This Service Bulletin complies with the applicable engine certification basis. (4) Objective Introduction of this Service Bulletin is designed to maintain reliability. ENGINE - LOW PRESSURE (LP) COMPRESSOR BOOSTER ROTOR - INTRODUCTION OF A LP COMPRESSOR BOOSTER ROTOR WITH REPROFILED SCALLOPS BY REWORK**Printed in Great Britain**



# SB−BR700−72−101683 Page 1 of 9 Sep.20/10 Sep.20/10 Initial Issue(5) Effect of Bulletin on: (a) Operation Not affected. (b) Maintenance Not affected. (c) Overhaul Affected (Refer to paragraph 1.O. Other Publications Affected). (d) Repair Schemes Affected (The Repair Schemes BRG1500, BRG1504, BRG1505 and BRG1509 are affected). (e) Interchangeability Not affected. (f) Fits and Clearances Not affected. D. Description This Service Bulletin instructs a rework to LP compressor booster rotors of pre Service Bulletin SB-BR700-72-101155 standard. The used LP compressor booster rotors will be inspected and only LP compressor booster rotors without visible cracks will be reworked. The rework contains: - Machining of the 24 front flange scallops and the radii of the 24 front flange scallops. - A crack inspection of the reworked area. - Shot peening of the reworked area. - Identification of the reworked part with a new part number.**Printed in Great Britain**



# SB−BR700−72−101683 Page 2 of 9 Sep.20/10 Sep.20/10 Initial IssueThe maximum approved lives of the reworked LP compressor booster rotors and any later alterations to them will be determined in the Time Limits Manual, Chapter 05-10-01.
NOTE : The LP compressor booster rotor can be reworked from the old standards (P/N BRH19871 or P/N BRH19215) to the new standards (P/N FW82697 or P/N FW82700) in accordance with the Rework Instruction 72-101683 Issue 01 by companies only who have the letters of approval from Rolls-Royce Deutschland to do this rework. The Rework Instruction 72-101683 Issue 01 is not attached to this Service Bulletin. This Service Bulletin is divided into two PARTs as follows: PART 1 - Applicable for engines which have the Service Bulletin SB-BR700-72-100922 standard incorporated but do not have the Service Bulletin SB-BR700-72-101155 standard incorporated (Rework of the LP compressor booster rotor from the old standard (P/N BRH19871) to the new standard (P/N FW82697). PART 2 - Applicable for engines which do not have the Service Bulletin SB-BR700-72-100922 standard incorporated (Rework of the LP compressor booster rotor from the old standard (P/N BRH19215) to the new standard (P/N FW82700). E. Compliance RECOMMENDED It is recommended that this Service Bulletin be accomplished on engines when the engine or module is disassembled for refurbishment or overhaul. F. Approval The technical content of this document is approved under the authority of EASA Design Organisation Approval No. EASA.21J.065. G. Manpower Estimated Man-hours: (1) In Service Not applicable. (2) At Overhaul/Shop Visit (a) Applicable (Hours not affected) (b) 8 hours for rework.**Printed in Great Britain**



# SB−BR700−72−101683 Page 3 of 9 Sep.20/10 Sep.20/10 Initial IssueH. Material Price and Availability A modification kit is not required; parts are supplied as single line items. For actual prices and availability of spares, contact: Rolls-Royce Deutschland Ltd & Co KG Spares Business Eschenweg 11, Dahlewitz 15827 Blankenfelde-Mahlow Germany Fax: +49 (0) 33 7086 3028 I. Tooling Price and Availability New tools are not required. J. Industry Support Information The incorporation of this Service Bulletin is not free of charge. NOTE : For further information contact your local Rolls-Royce Representative. K. Weight and Balance (1) Weight Change
None. (2) Moment Arm No effect. (3) Datum ES2540 (PPS100). L. Electrical Load Data The aircraft electrical load is not affected by this Service Bulletin. M. Software Accomplishment Summary Not applicable.**Printed in Great Britain**



# SB−BR700−72−101683 Page 4 of 9 Sep.20/10 Sep.20/10 Initial IssueN. References (1) Modification Bulletin 72-101683 Issue 01 date Aug.19/10. (2) Engine Manual - E-715-3BR, Chapters 72-00-32 and 72-31-00. (3) Rework Instruction 72-101683 Issue 01 dated Mar. 1/10. (4) Service Bulletin SB-BR700-72-100922
ENGINE - LP COMPRESSOR BOOSTER ROTOR - INTRODUCTION OF NEW OIL DRAIN HOLE POSITIONS AND CHANGED MANUFACTURING TOLERANCES (5) Service Bulletin SB-BR700-72-101155
ENGINE - LP COMPRESSOR BOOSTER ROTOR - INTRODUCTION OF A NEW BOOSTER BLISK ROTOR WITH DECREASED TIP CLEARANCE O. Other Publications Affected (1) Illustrated Parts Catalog - S-715-3BR, Chapter 72-38-18. (2) Engine Manual - E-715-3BR, Chapter 72-38-18. (3) Time Limits Manual - T-715-3BR, Chapter 05-10-01. P. Interchangeability of Parts Not affected.**Printed in Great Britain**



# SB−BR700−72−101683 Page 5 of 9 Sep.20/10 Sep.20/10 Initial Issue2. Material Information A. Parts required to accomplish this Service Bulletin (In addition to Parts in 2.B., 2.C. and 2.E.)
None. B. Parts to be Reworked IPC Fig/Item No. New Part No. Unit Price (US Dollars) Qty Per Eng. Key Word Old Part No. Instructions/ Dispositions

PART 1 72-38-18 01-200 FW82697 - 1 Low Pressure (LP) compressor booster rotor BRH19871 (1)(2)(3)

PART 2 72-38-18 01-200 FW82700 - 1 Low Pressure (LP) compressor booster rotor BRH19215 (1)(2)(3)

C. New Production Parts
None. D. Redundant Parts
None. E. Expendable Parts Refer to the related Manual tasks given in the Accomplishment Instruction of this Service Bulletin.**Printed in Great Britain**



# SB−BR700−72−101683 Page 6 of 9 Sep.20/10 Sep.20/10 Initial IssueF. Instruction/Disposition Codes (1) The old and new parts are fully interchangeable. (2) The part can be reworked from the old standard to the new standard in accordance with the Rework Instruction 72-101683 Issue 01 by companies only who have the letters of approval from Rolls-Royce Deutschland to do this rework. The Rework Instruction 72-101683 Issue 01 is not attached to this Service Bulletin. (3) The reworked LP compressor booster rotors can be used as alternatives to each other and to the existing LP compressor booster rotors, P/N BRH19871 (Service Bulletin SB-BR700-72-100922 standard) and P/N BRH20241 (Service Bulletin SB-BR700-72-101155 standard).**Printed in Great Britain**



# SB−BR700−72−101683 Page 7 of 9 Sep.20/10 Sep.20/10 Initial Issue3. Accomplishment Instruction A. General (1) Obey all the WARNINGS and CAUTIONS in the procedures that are referred to. (2) Consumable Materials (a) Refer to the related Manual tasks given in this instruction. (3) Tools and Equipment (a) Refer to the related Manual tasks given in this instruction. B. Remove the Low Pressure (LP) compressor (fan) disc/Low Pressure (LP) compressor booster rotor assembly from the engine (Refer to the Engine Manual, TASK 72-00-32-000-801). C. Disassemble the LP compressor (fan) disc/LP compressor booster rotor assembly (Refer to the Engine Manual, TASK 72-31-00-000-802) (1) Remove the old LP compressor booster rotor (72-38-18, 01-200), P/N BRH19871 or P/N BRH19215. D. Rework the removed LP compressor booster rotor (72-38-18, 01-200) from the old standards (P/N BRH19871 or P/N BRH19215) to the new standards (P/N FW82697 or P/N FW82700) (1) A source demonstration is necessary for this rework. Refer to your local Rolls-Royce Representative to find the companies who have the letters of approval from Rolls-Royce Deutschland to do this rework in accordance with the Rework Instruction 72-101683 Issue 01. E. Assemble the LP compressor (fan) disc/LP compressor booster rotor assembly (Refer to the Engine Manual, TASK 72-31-00-400-801) (1) Install the reworked LP compressor booster rotor (72-38-18, 01-200), P/N FW82697 or P/N FW82700. F. Install the LP compressor (fan) disc/LP compressor booster rotor assembly on the engine (Refer to the Engine Manual, TASK 72-00-32-400-801). G. Make sure that the work area is clean and clear of tools, equipment and other unwanted materials.**Printed in Great Britain**



# SB−BR700−72−101683 Page 8 of 9 Sep.20/10 Sep.20/10 Initial IssueH. A record of accomplishment is required. Rolls-Royce Deutschland suggests to put an entry into the engine log book (1) Record the incorporation of Service Bulletin SB-BR700-72-101683 (PART A or B) in the Engine Service Record. (2) Record the incorporation of Service Bulletin SB-BR700-72-101683 (PART A or B) in the Service Bulletins list of the Non-Modular Log Card. (3) Record the removal of the old LP compressor booster rotor (72-38-18, 01-200), P/N BRH19871 or P/N BRH19215 in the Serialized Parts Life Record list of the Non-Modular Log Card and on the Life Limited Part (LLP) record sheet (a) Complete the LLP record sheet of the old LP compressor booster rotor to show the accumulated life of the old LP compressor booster rotor at rework. (4) Record the installation of the reworked LP compressor booster rotor (72-38-18, 01-200), P/N FW82697 or P/N FW82700 in the Serialized Parts Life Record list of the Non-Modular Log Card and on the LLP record sheet (a) Raise a new LLP record sheet for the reworked LP compressor booster rotor. (b) Make sure the serial number and accumulated life at rework of the old LP compressor booster rotor (72-38-18, 01-200), P/N BRH19871 or P/N BRH19215 from the LLP record sheet is recorded on the new LLP record sheet for the reworked LP compressor booster rotor. (c) Make sure the accumulated life and serial number of the reworked LP compressor booster rotor is recorded in the Serialized Parts Life Record list of the Non-Modular Log Card.**Printed in Great Britain**



# SB−BR700−72−101683 Page 9 of 9 Sep.20/10 Sep.20/10 Initial Issue