 | GEnx-1B SERVICE BULLETIN - 72-0121 R02 | Revised: 03/10/2015 |
| SB 72-0121 R02 ENGINE - Propulsor Module Assembly (72-00-02) - Introduction of MTU Designed Turbine Center Frame Assembly | Issued: 01/17/2013 | |
| GEnx-1B SERVICE BULLETIN - 72-0121 R02 | Revised: 03/10/2015 |
| SB 72-0121 R02 ENGINE - Propulsor Module Assembly (72-00-02) - Introduction of MTU Designed Turbine Center Frame Assembly | Issued: 01/17/2013 | |
| GE PROPRIETARY INFORMATION | |
| The information contained in this document is GE proprietary information and is disclosed in confidence. It is the property of GE and shall not be used, disclosed to others or reproduced without the express written consent of GE, including, but without limitation, it is not to be used in the creation, manufacture, development, or derivation of any repairs, modifications, spare parts, designs, or configuration changes or to obtain FAA or any other government or regulatory approval to do so. If consent is given for reproduction in whole or in part, this notice and the notice set forth on each page of this document shall appear in any such reproduction in whole or in part. | |
| This technical data is considered EAR controlled pursuant to 15 CFR Parts 730-774 respectively. Transfer of this data by any means to a Non-US Person, whether in the United States or abroad, without the proper U.S. Government authorization (e.g., License, exemption, NLR, etc.), is strictly prohibited. | |
| Copyright (2015) General Electric Company, U.S.A. |
| TRANSMITTAL INFORMATION |
| REVISION 2 TO SERVICE BULLETIN 72-0121 |
| Revision 2 is issued to update paragraph 2., MATERIAL INFORMATION . |
| Revision 1 was issued on the April 16, 2013. The original was issued on the January 17, 2013. Revision bars in the left margin identify changes. |
| 1. | PLANNING INFORMATION |
| A. | Effectivity |
|
| This Service Bulletin is applicable to all GEnx-1B engines. |
| This Service Bulletin has been introduced in production to these GEnx-1B engines: |
| • |
|
| These serial numbers are the best available data. |
| The turbine center frame (TCF) P/N 2305M58G06 is affected by this Service Bulletin. |
| B. | Description |
| This Service Bulletin provides a new TCF P/N 1GN38001G01 designed and manufactured by MTU to GEnx-1B engines. |
| C. | Compliance |
| Category 7 |
| GE recommends that you do this Service Bulletin at customer's option. |
| NOTE: |
|
| D. | Concurrent Requirements |
| None. |
| E. | Reason |
| (1) | Objective: |
| To introduce a new part and improve reliability. |
| (2) | Condition: |
| The current TCF assembly P/N 2330M58G06 is designed and manufactured by GE. |
| (3) | Cause: |
| The new TCF assembly P/N 1GN38001G01 is designed and manufactured by MTU. This Service Bulletin will complete the introduction of MTU as a revenue sharing partner. |
| (4) | Improvement: |
| The new TCF assembly P/N 1GN38001G01 introduces a new material for flowpath fairings and panels, along with more durable forward and rear hangers, bolts, nuts, and spline seals. Due to the update of the engine manual, section 72-54-00 will be consistent with both GE and MTU designed TCF modules. |
| (5) | Substantiation: |
| Substantiation is by comparative analysis. |
| F. | Approval |
| This Service Bulletin has been reviewed by the FAA and the repair(s) and modification(s) herein comply with the applicable Federal Aviation Regulations and are FAA APPROVED for installation in the model(s) listed in this Service Bulletin. |
| G. | Manpower |
| No additional man-hours are required to comply with this Service Bulletin. |
| H. | Weight and Balance |
| Weight and balance are not changed. |
| I. | References (Use the latest version of these documents) |
| GEK 112851, GEnx-1B Engine Manual (EM) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| NOTE: |
|
| J. | Publications Affected |
| GEK 112851, GEnx-1B Engine Manual (EM) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| K. | Interchangeability |
| The old TCF P/N 2330M58G06 and new TCF P/N 1GN38001G01 are two-way interchangeable as a set. |
| L. | Software Accomplishment Summary |
| Not applicable. |
| 2. | MATERIAL INFORMATION |
| A. | Material - Price and Availability |
| (1) | Parts necessary to do this Service Bulletin: |
|
| NOTE: |
|
| (2) | Other Spare Parts: |
| None. |
| (3) | Consumables: |
| None. |
| B. | Industry Support Information |
| None. |
| C. | Configuration Chart |
|
| Operation Codes AD=Add DE=Delete RE=Replace RM=Remains QTC=Quantity Change |
| Change Codes 2=Two-way interchangeable. 5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability. |
| Support Codes B=Old parts will be supplied until all old parts are sold. D=Old parts will be supplied for engines that have not been changed by this Service Bulletin. |
| D. | Parts Disposition |
| None. |
| E. | Tooling - Price and Availability |
| None. |
| 3. | ACCOMPLISHMENT INSTRUCTIONS |
| A. | General. |
| (1) | Removal and installation instructions for the TCF assembly have not changed. Refer to the GEnx-1B EM, 72-54-00, DISASSEMBLY 001 and ASSEMBLY 001. |