LIST OF EFFECTIVE PAGES The effective pages to this Service Bulletin are as follows: Page Revision Number Revision Date

Bulletin 1 Sep.26/12 2 Sep.26/12 3 Sep.26/12 4 Sep.26/12 5 Sep.26/12 6 Sep.26/12 7 Sep.26/12 8 Sep.26/12 9 Sep.26/12 10 Sep.26/12 11 Sep.26/12 12 Sep.26/12**Printed in Great Britain**



# RB.211−78−AG924 Transmittal - Page 21. Planning Information A. Effectivity Airbus A330 RB211 TRENT768-60, TRENT768-60/15, TRENT768-60/16 Propulsion Systems RB211 TRENT772-60, TRENT772-60/15, TRENT772-60/16 Propulsion Systems RB211 TRENT772B-60, TRENT772B-60/15, TRENT772B-60/16 Propulsion Systems RB211 TRENT772C-60, TRENT772C-60/15, TRENT772C-60/16 Propulsion Systems B. Concurrent Requirements
None C. Reason (1) Problem and Evidence Hinge position numbers 3 and 4 are links between the thrust reverser and the pylon, that feature a pin and bush pivot arrangement. The potential for bushes to be fitted in service at the number 3 and 4 hinge positions that do not feature the required heat treatment has been identified. (2) Substantiation The changes introduced by this Service Bulletin have been the subject of satisfactory engineering analysis including stress analysis performed by the thrust reverser manufacturer. (3) Objective Incorporation of this Service Bulletin (Modification) is designed to maintain reliability. (4) Effect of Bulletin on: (a) Operation Not affected (b) Maintenance Affected (see 1.L.,Other Publications Affected). EXHAUST - THRUST REVERSER ATTACHING PARTS - INTRODUCTION OF A REVISED BUSHING AT NO.3 AND NO.4 HINGE POSITIONS WITH PART IDENTIFICATION - MOD.78-AG924**Printed in Great Britain**



# RB.211−78−AG924 Page 1 of 12 Sep.26/12 Sep.26/12(c) Overhaul Not affected (d) Repair Schemes Affected (Repairs will be updated to include the new part(s) introduced by this Service Bulletin) (e) Interchangeability Affected (see 1.M.,Interchangeability of Parts). D. Description (1) This Service Bulletin introduces revised bushes at hinge positions number 3 and 4 on the thrust reverser unit The change introduced by this Service Bulletin is: A revised bush is introduced, similar to the existing item except for: (a) The material specification has been changed to clarify the heat treatment requirement (b) The part number is ink marked on the outer barrel of the bush (c) A scallop on each of the end faces of the bush for a permanent identification compared to the current item (2) Existing thrust reverser units left hand and right hand C-Ducts may be reworked in accordance with Aircelle Service Bulletin 78-G924 (3) Left hand and right hand C-Ducts incorporating this Service Bulletin will be identified by endorsement of the modification plate with 78-G924 (4) This Service Bulletin is in two parts as follows: (a) Part 1 New production thrust reverser units. (b) Part 2 Rework of in-service thrust reverser units. E. Compliance (1) On-wing
ALERT**Printed in Great Britain**



# RB.211−78−AG924 Page 2 Sep.26/12 Sep.26/12This Service Bulletin must be accomplished on all powerplants by 14 December 2014. (2) In-shop
ALERT This Service Bulletin must be accomplished on all powerplants by 14 December 2014. F. Approval The technical content of Service Bulletin 78-G924 was approved by a representative of the European Aviation Safety Agency (EASA) on 22nd June 2012, EASA Certificate No.10040291. The technical content of this document is approved under the authority of DOA No. EASA.21.J.031. G. Manpower Refer to Aircelle Service Bulletin 78-G924 H. Material Price and Availability Material required to accomplish this Service Bulletin (Modification) shall be supplied free of charge. I. Tooling Price and Availability Special tools are not required J. Weight and Balance (1) Weight Change
None (2) Moment Arm No effect (3) Datum Power Plant Station (PPS) 100 K. References (1) Aircraft Maintenance Manual, 78-32-51 and 78-32-52, Removal/Installation (2) Aircelle Service Bulletin 78-G924**Printed in Great Britain**



# RB.211−78−AG924 Page 3 Sep.26/12 Sep.26/12(3) Airbus SB No. A330-78-3021 This Service Bulletin is subject of aircraft modification No. 202463 S32262 (classified minor) and is covered by aircraft Service Bulletin No. A330-78-3021. Under no circumstances shall the modified equipment, resulting from the application of this SB, be installed on the aircraft type unless the corresponding modification, and if applicable, its aircraft SB are approved. L. Other Publications Affected (1) For effect on Illustrated Parts List (IPL), refer to Aircelle Service Bulletin 78-G784 (2) Aircelle Component Maintenance Manual 91A250-01, 78-30-20 (3) Refer to Airbus SB No. A330-78-3021 M. Interchangeability of Parts Affected (see 2.E.,Instruction disposition code (2)).**Printed in Great Britain**



# RB.211−78−AG924 Page 4 Sep.26/12 Sep.26/122. Material Information A. Parts required to accomplish this Service Bulletin: RB211 TRENT768-60, TRENT768-60/15, TRENT768-60/16 Propulsion Systems RB211 TRENT772-60, TRENT772-60/15, TRENT772-60/16 Propulsion Systems TRENT 768, 772 Thrust Reversers TRENT TR621, TRENT TR622 TRENT TR621 C-Ducts CDL072AA, CDR072AA TRENT TR622 C-Ducts CDL072AA, CDR073AA RB211 TRENT772B-60, TRENT772B-60/15, TRENT772B-60/16 Propulsion Systems TRENT 772B Thrust Reversers TRENT TR623, TRENT TR624 TRENT TR623 C-Ducts CDL075AA, CDR075AA TRENT TR624 C-Ducts CDL075AA, CDR076AA RB211 TRENT 772C-60, TRENT772C-60/15, TRENT772C-60/16 Propulsion Systems TRENT 772C Thrust Reversers TRENT TR100397 TRENT TR100397 C-Ducts CDL100398, CDR100399 78-30-14 Parts 1 and 2 of SB**Printed in Great Britain**



# RB.211−78−AG924 Page 5 Sep.26/12 Sep.26/12FIG ITEM NO. NEW PART NO. QTY PART TITLE MAT OLD PART NO. INSTR DISP

01208 91H364-02 2 Bush, sleeve - No.3 hinge position - 91H364-01 (2)

01258 91H364-02 2 Bush, sleeve - No.4 hinge position - 91H364-01 (2)

B. Parts to be reworked: RB211 TRENT768-60, TRENT768-60/15, TRENT768-60/16 Propulsion Systems RB211 TRENT772-60, TRENT772-60/15, TRENT772-60/16 Propulsion Systems TRENT 768, 772 Thrust Reversers TRENT TR621, TRENT TR622 LH C-Ducts CDL072AA RB211 TRENT772B-60, TRENT772B-60/15, TRENT772B-60/16 Propulsion Systems TRENT 772B Thrust Reversers TRENT TR623, TRENT TR624 LH C-Ducts CDL075AA RB211 TRENT 772C-60, TRENT772C-60/15, TRENT772C-60/16 Propulsion Systems TRENT 772C Thrust Reversers TRENT TR100397 LH C-Ducts CDL100398 78-31-00 Parts 1 and 2 of SB
FIG ITEM NO. NEW PART NO. QTY PART TITLE MAT OLD PART NO. INSTR DISP

01001 HDTR3411L (SB78-G924) 1 C-Duct, LH Thrust Reverser - HDTR3411L (Pre SB78-G924) (2)

01001 HDTR3412L (SB78-G924) 1 C-Duct, LH Thrust Reverser - HDTR3412L (Pre SB78-G924) (2)**Printed in Great Britain**



# RB.211−78−AG924 Page 6 Sep.26/12 Sep.26/12FIG ITEM NO. NEW PART NO. QTY PART TITLE MAT OLD PART NO. INSTR DISP

01001 HDTR3413L (SB78-G924) 1 C-Duct, LH Thrust Reverser - HDTR3413L (Pre SB78-G924) (2)

01001 HDTR3414L (SB78-G924) 1 C-Duct, LH Thrust Reverser - HDTR3414L (Pre SB78-G924) (2)

01001 HDTR3415L (SB78-G924) 1 C-Duct, LH Thrust Reverser - HDTR3415L (Pre SB78-G924) (2)

01001 HDTR3416L (SB78-G924) 1 C-Duct, LH Thrust Reverser - HDTR3416L (Pre SB78-G924) (2)

01001 HDTR3417L (SB78-G924) 1 C-Duct, LH Thrust Reverser - HDTR3417L (Pre SB78-G924) (2)

RB211 TRENT768-60, TRENT768-60/15, TRENT768-60/16 Propulsion Systems RB211 TRENT772-60, TRENT772-60/15, TRENT772-60/16 Propulsion Systems TRENT 768, 772 Thrust Reversers TRENT TR621, TRENT TR622 TRENT TR621 RH C-Ducts CDR072AA TRENT TR622 RH C-Ducts CDR073AA RB211 TRENT772B-60, TRENT772B-60/15, TRENT772B-60/16 Propulsion Systems TRENT 772B Thrust Reversers TRENT TR623, TRENT TR624 TRENT TR623 RH C-Ducts CDR075AA TRENT TR624 RH C-Ducts CDR076AA RB211 TRENT 772C-60, TRENT772C-60/15, TRENT772C-60/16 Propulsion Systems TRENT 772C Thrust Reversers**Printed in Great Britain**



# RB.211−78−AG924 Page 7 Sep.26/12 Sep.26/12TRENT TR100397 TRENT TR100397 RH C-Ducts CDR100399 78-31-00 Parts 1 and 2 of SB
FIG ITEM NO. NEW PART NO. QTY PART TITLE MAT OLD PART NO. INSTR DISP

02001 HDTR3413R (SB78-G924) 1 C-Duct, RH Thrust Reverser - HDTR3413R (Pre SB78-G924) (2)

02001 HDTR3414R (SB78-G924) 1 C-Duct, RH Thrust Reverser - HDTR3414R (Pre SB78-G924) (2)

02001 HDTR3415R (SB78-G924) 1 C-Duct, RH Thrust Reverser - HDTR3415R (Pre SB78-G924) (2)

02001 HDTR3416R (SB78-G924) 1 C-Duct, RH Thrust Reverser - HDTR3416R (Pre SB78-G924) (2)

02001 HDTR3418R (SB78-G924) 1 C-Duct, RH Thrust Reverser - HDTR3418R (Pre SB78-G924) (2)

02001 HDTR3419R (SB78-G924) 1 C-Duct, RH Thrust Reverser - HDTR3419R (Pre SB78-G924) (2)

02001 HDTR3420R (SB78-G924) 1 C-Duct, RH Thrust Reverser - HDTR3420R (Pre SB78-G924) (2)

C. New production parts: The following parts will be made available as future spares in addition to those listed under A and B: RB211 TRENT768-60, TRENT768-60/15, TRENT768-60/16 Propulsion Systems RB211 TRENT772-60, TRENT772-60/15, TRENT772-60/16 Propulsion Systems TRENT 768, 772 Thrust Reversers**Printed in Great Britain**



# RB.211−78−AG924 Page 8 Sep.26/12 Sep.26/12TRENT TR621, TRENT TR622 TRENT TR621 C-Ducts CDL072AA, CDR072AA TRENT TR622 C-Ducts CDL072AA, CDR073AA RB211 TRENT772B-60, TRENT772B-60/15, TRENT772B-60/16 Propulsion Systems TRENT 772B Thrust Reversers TRENT TR623, TRENT TR624 TRENT TR623 C-Ducts CDL075AA, CDR075AA TRENT TR624 C-Ducts CDL075AA, CDR076AA RB211 TRENT 772C-60, TRENT772C-60/15, TRENT772C-60/16 Propulsion Systems TRENT 772C Thrust Reversers TRENT TR100397 TRENT TR100397 C-Ducts CDL100398, CDR100399 78-30-00 Part 1 of SB
FIG ITEM NO. NEW PART NO. QTY PART TITLE MAT OLD PART NO. INSTR DISP

01001 91A250-19 1 Reverser, Thrust - Installation - 91A250-18 (1)

D. Reference Drawings: RB211 TRENT768-60, TRENT768-60/15, TRENT768-60/16 Propulsion Systems RB211 TRENT772-60, TRENT772-60/15, TRENT772-60/16 Propulsion Systems**Printed in Great Britain**



# RB.211−78−AG924 Page 9 Sep.26/12 Sep.26/12TRENT 768, 772 Thrust Reversers TRENT TR621, TRENT TR622 TRENT TR621 C-Ducts CDL072AA, CDR072AA TRENT TR622 C-Ducts CDL072AA, CDR073AA RB211 TRENT772B-60, TRENT772B-60/15, TRENT772B-60/16 Propulsion Systems TRENT 772B Thrust Reversers TRENT TR623, TRENT TR624 TRENT TR623 C-Ducts CDL075AA, CDR075AA TRENT TR624 C-Ducts CDL075AA, CDR076AA RB211 TRENT 772C-60, TRENT772C-60/15, TRENT772C-60/16 Propulsion Systems TRENT 772C Thrust Reversers TRENT TR100397 TRENT TR100397 C-Ducts CDL100398, CDR100399 78-30-14 Parts 1 and 2 of SB
FIG ITEM NO. NEW PART NO. QTY PART TITLE MAT OLD PART NO. INSTR DISP

01001 91A444-05 REF Bush, pin C-Duct attaching parts - 91A444-04 -

E. Instruction disposition codes: (1) Two-Way Interchangeable. Old and new parts are fully interchangeable.**Printed in Great Britain**



# RB.211−78−AG924 Page 10 Sep.26/12 Sep.26/12(2) One-Way Interchangeable. The old part may be replaced by the old or new part in isolation, but the new part must not be replaced by the old part in isolation.**Printed in Great Britain**



# RB.211−78−AG924 Page 11 Sep.26/12 Sep.26/123. Accomplishment Instructions A. The revised C-Duct attachment sleeve bush introduced by this Service Bulletin at TR C-Duct hinge positions No.3 and No.4 is interchangeable with the existing item one-way only, the new bush must not be replaced by the old bush, see 1.M.,Interchangeability of Parts and see also 2.E.,Instruction disposition codes. Remove the existing and install the new in accordance with existing maintenance practices (Aircraft Maintenance Manual 78-32-51 and 78-32-52, Removal/Installation).

B. A record of accomplishment is required.**Printed in Great Britain**



# RB.211−78−AG924 Page 12 Sep.26/12 Sep.26/12Aircelle Customer Support Center Tel. : 33 (0)1 64 14 80 33 BP 50042 Fax : 33 (0)1 64 14 84 10 50, rue Pierre Curie 78371 PLAISIR CEDEX – France 

# SB 78-AG924 Initial Issue, September. 26 / 2012 Page 1 of 6 

# SERVICE BULLETIN No. SB 78-AG924

SLEEVE NO. 3 AND 4 – NO MARKING AND LACK OF HEAT TREATMENT.

1. PLANNING INFORMATION A. Effectivity Airbus A330 This Service Bulletin is applicab le on production to the Thrust Reverser Assembly Part No. 91A250-19, HDTR3415L Trent 700 Thrust Reversers LH and HDTR3418R Trent 700 Thrust Reversers RH, Serial from No. 1040 included and onwards. For the retrofit in service this Service Bulletin is applicable to the Thrust Reverser Assembly Serial from No. 013 thru 1039 included. B. Concurrent Requirements None. C. Reason (1) Problem Sleeves No. 3 and 4 (P/N 91H364-01) were declared with a missing heat treatment. Sleeve 91H364-01 currently do not carry any permanent part number identification marking which makes it difficult to determine the Engineering Modification standard of the part. Clarification of the identity is required by Ink Marking and includes scallops (notches) to the sleeve ends for visual identification. (2) Substantiation The changes introduced by this Service Bulletin (modification) have been the subject of a satisfactory engineering analysis. (3) Objective This Service Bulletin gives instru ctions to replace the current parts on Trent 700 Thrust Reverser. (4) Cause Quality issues.Aircelle Customer Support Center Tel. : 33 (0)1 64 14 80 33 BP 50042 Fax : 33 (0)1 64 14 84 10 50, rue Pierre Curie 78371 PLAISIR CEDEX – France 

# SB 78-AG924 Initial Issue, September. 26 / 2012 Page 2 of 6 (5) Effect of bulletin on: (a) Operation Not affected. (b) Maintenance Not affected. (c) Overhaul Not affected. (d) Repair Schemes Not affected. (e) Fits and Clearances Not affected. D. Description This Service Bulletin gives instructions to replace the 12 O’clock Sleeves No. 3 and 4. E. Compliance ALERT This Service Bulletin must be acco mplished on all Po werplants by 14 th December 2014. NOTE: This Service Bulletin introduces new parts 91H364-02. Old parts 91H364-01 must be scrapped and not installed on Trent 700 Thrust Reverser. F. Approval The technical content of this Service Bulletin has been approved as part of Rolls-Royce Service Bulletin 78-AG924. G. Manpower After you get access to the Thrust Reverser, the time to apply the Service Bulletin is: Estimated man-hours: 1.00 Man Hour H. Material - Price and Availability Please refer to Rolls-Royce Service Bulletin. I. Tooling - Price and Availability SLING – Thrust Reverser Cowls: HU87133. Installation / Extraction tool hinge No. 3 and 4: HU87128.Aircelle Customer Support Center Tel. : 33 (0)1 64 14 80 33 BP 50042 Fax : 33 (0)1 64 14 84 10 50, rue Pierre Curie 78371 PLAISIR CEDEX – France 

# SB 78-AG924 Initial Issue, September. 26 / 2012 Page 3 of 6 J. Weight and Balance Not affected. K. Electrical Load Data Not applicable. L. References (1) Aircraft Maintenance Manual AMM 71-13-00, AMM 78-32-51 and AMM 78-32-52. (2) Other source: 91N0465 rev B. M. Publications Affected (1) Aircelle Component Maintenance Manual CMM 78-30-20. (2) Aircraft Illustrated Parts Catalogue IPC 78-30-14-01. N. Interchangeability of Parts One-way interchangeable. The old part 91H364-01 may be replaced by the old part prior to the associated Airworthiness Directive compliance timescale, see 1.E. of this Service Bulletin. The old part may be replaced by the new part 91H364-02 at any time and must be replaced by the new part within the Airworthiness Directive complianc e timescale, see 1.E. of this Service Bulletin. The new part must not be replaced by the old part at any time. It is not permissible to remove (demodify) this modification from powerplants onc e this Service Bulletin (Modification) has been accomplished. NOTE: Old parts 91H364-01 must be scrapped and not installed on Trent 700 Thrust Reverser.Aircelle Customer Support Center Tel. : 33 (0)1 64 14 80 33 BP 50042 Fax : 33 (0)1 64 14 84 10 50, rue Pierre Curie 78371 PLAISIR CEDEX – France 

# SB 78-AG924 Initial Issue, September. 26 / 2012 Page 4 of 6 2. MATERIAL INFORMATION A. Material information for the kits content Kits for LH C Ducts and RH C Ducts:

IPL Fig. / Item New Part Number Qty Keyword Mat. Old Part Number Inst. Disp. 01 – 1Q 91A250-19 N/A THRUST REVERSER INSTALLATION - 91A250-18 (4) 01 – 19 91A441-09 1 . KIT, C-DUCT, THRUST REVERSER LH - 91A441-08 (4) 03 – 1B 91A444-05 1 .. ATTACHING PARTS C-DUCT - 91A444-04 (4) 03 – 208A 03 – 258A 91H364-02 2 ... SLEEVE, BUSHING No. 3 – 4 - 91H364-01 (4)

01 – 59 91A441-59 1 . KIT, C-DUCT THRUST REVERSER RH - 91A441-58 (4) 03 – 1B 91A444-05 1 .. ATTACHING PARTS C-DUCT - 91A444-04 (4) 03 – 208A 03 – 258A 91H364-02 2 ... SLEEVE, BUSHING No. 3 – 4 - 91H364-01 (4)

B. Instructions disposition codes Code (4): One-way interchangeable. The old part 91H364-01 may be replaced by the old part prior to the associated Airworthiness Directive compliance timescale, see 1.E. of this Service Bulletin. The old part may be replaced by the new part 91H364-02 at any time and must be replaced by the new part within the Airworthiness Directive complianc e timescale, see 1.E. of this Service Bulletin. The new part must not be replaced by the old part at any time. It is not permissible to remove (demodify) this modification from powerplants onc e this Service Bulletin (Modification) has been accomplished. NOTE: Old parts 91H364-01 must be scrapped and not installed on Trent 700 Thrust Reverser.Aircelle Customer Support Center Tel. : 33 (0)1 64 14 80 33 BP 50042 Fax : 33 (0)1 64 14 84 10 50, rue Pierre Curie 78371 PLAISIR CEDEX – France 

# SB 78-AG924 Initial Issue, September. 26 / 2012 Page 5 of 6 3. ACCOMPLISHMENT INSTRUCTIONS A. General WARNING : WHEN YOU DO THE PROCEDURES YOU MUST WEAR PROTECTIVE CLOTHING, GLOVES, DUST MASK AND SAFETY GOGGLES. THIS IS TO PROTECT YOU AGAINST DUST AND LOOSE PARTICLES, WHICH CAN BE DANGEROUS TO YOUR HEALTH. WARNING : WHEN YOU USE CLEANING MATERIALS, ADHESIVES, COATING AND SEALANT, REFER TO, AND OBEY, THE MANUFACTURER'S CONTROL AND APPLICATION INSTRUCTIONS AND HEALTH AND SAFETY NOTICES. CAUTION : DURING MODIFICATION, CARE MUST BE TAKEN NOT TO DAMAGE THE SURROUNDING EQUIPMENT; PLACE A COVER ON TOP OF THE ELECTRONIC UNIT PROTECTION BOX (EUPB) TO PREVENT ANY TOOL OR COMPONENT TO FALL BEHIND AND BE STUCK. B. Procedure NOTE: This procedure is written for the Left Thrust Reverser but is equally applicable for the Right Thrust Reverser. (1) Get access: (a) Open the Left Fan Cowl Door. Refer to A330 Aircraft Maintenance Manual, TASK 71-13-00- 010-805. (2) Remove the Sleeves. Refer to A330 Aircraft Maintenance Manual, TASK 78-32-51-000-803-A. NOTE: For the Right Thrust Reverser, refer to the A330 Aircraft Maintenance Manual, TASK 78-32-52-000-802-A. (3) Install the Sleeves. Refer to A330 Aircra ft Maintenance Manual, TASK 78-32-51-000-803-A. NOTE: For the Right Thrust Reverser, refer to the A330 Aircraft Maintenance Manual, TASK 78-32-52-000-802-A. (4) Close access. (a) Close the Left Fan Cowl Door. Refer to A330 Aircraft Maintenance Manual, TASK 71-13-00- 410-805. (5) Identification of the modification. (a) Mark 78-AG924 to the modification plate of the C-duct Left Thrust Reverser and C-duct Right Thrust Reverser.Aircelle Customer Support Center Tel. : 33 (0)1 64 14 80 33 BP 50042 Fax : 33 (0)1 64 14 84 10 50, rue Pierre Curie 78371 PLAISIR CEDEX – France 

# SB 78-AG924 Initial Issue, September. 26 / 2012 Page 6 of 6 THIS PAGE INTENTIONALLY LEFT BLANK