 | GEnx-1B SERVICE BULLETIN - 72-0333 R00 | Revised: 05/05/2017 |
| SB 72-0333 R00 ENGINE - Turbine Rear Frame Assembly (72-57-00) - Pre-PIP2 TRF Rework to PIP2 Capable Configuration | Issued: 05/05/2017 | |
| GEnx-1B SERVICE BULLETIN - 72-0333 R00 | Revised: 05/05/2017 |
| SB 72-0333 R00 ENGINE - Turbine Rear Frame Assembly (72-57-00) - Pre-PIP2 TRF Rework to PIP2 Capable Configuration | Issued: 05/05/2017 | |
| 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 (2017) General Electric Company, U.S.A. |
| 1. | PLANNING INFORMATION |
| A. | Effectivity |
| * * * FOR GEnx-1B64/P2, -1B67/P2, -1B70/P2, -1B70C/P2, -1B70/75/P2, -1B74/75/P2, -1B76A/P2 |
| This Service Bulletin is applicable to the GEnx-1B engines that will be or are upgraded into PIP2 configuration in accordance with the GEnx-1B S/B 72-0154 and GEnx-1B S/B 72-0160. This Service Bulletin can be performed as a part of PIP2 engine upgrade process only. |
| The turbine rear frames (TRF) P/N 10054251, P/N 10067452, P/N 10070017, P/N 10075904, and P/N 10131146 are affected by this Service Bulletin. |
| B. | Description |
| This Service Bulletin provides instructions to rework the old pre-PIP2 TRFs into PIP2 capable configuration. |
| Also, this Service Bulletin releases the new reworked TRFs P/N 10189430, P/N 10200815, P/N 10200816, P/N 10200818, and P/N 10200820 to the field for use with PIP2 engines only. |
| C. | Compliance |
| Category 7 |
| GE recommends that you do this Service Bulletin at customer's option. |
| Impact F |
| Implement as deemed necessary per the Service Bulletin category. |
| NOTE: |
|
| D. | Concurrent Requirements |
| None. |
| E. | Reason |
| (1) | Objective: |
| To rework parts. |
| (2) | Condition: |
| During the engine upgrade to PIP2 configuration, the pre-PIP2 TRF needs to be replaced with a new PIP2 TRF (P/N 10140751 or P/N 10140753). |
| (3) | Cause: |
| There is a need to rework the pre-PIP2 TRFs to make them capable with PIP2 engines. |
| (4) | Improvement: |
| The proposed rework procedure consists of adding material (Inconel 718) with laser metal deposition-powder (LMD-p) in three critical areas to improve the ultimate strength capability in order to reach same or better strength capability than the current PIP2 configuration. |
| (5) | Substantiation: |
| Substantiation is by analysis and comparative analysis. |
| F. | Approval |
| The data contained in this Service Bulletin has been reviewed by the FAA or authorized entity representing the FAA and the repair(s) and modification(s) herein comply with the applicable Aviation Regulations and are 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 |
| The complete compliance with this Service Bulletin increases the TRFs weight as shown in table below: |
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| *Different hub casting requires different rework processes and amount of added material. |
| I. | References (Use the latest version of these documents) |
| GEK 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| GEnx-1B S/B 72-0154, ENGINE - General (72-00-00) - GEnx-1B/P2 Hardware Release (Collector Bulletin) |
| GEnx-1B S/B 72-0160, ENGINE - General (72-00-00) - GEnx-1B/P2 Hardware Release (LPT Module) |
| GEnx-1B S/B 72-0301, ENGINE - Turbine Rear Frame Assembly (72-57-00) - Release of TRF Subassembly Parts |
| Repair Document (RD) 940-351 (P1 or higher), Turbine Rear Frame Assembly - Turbine Rear Frame - Alteration - Weld Build Up Of Strut No. 2 and Hub Areas By Laser Metal Deposition Powder |
| NOTE: |
|
| J. | Publications Affected |
| GEK 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| K. | Interchangeability |
| One-way interchangeable. |
| L. | Software Accomplishment Summary |
| Not applicable. |
| 2. | MATERIAL INFORMATION |
| A. | Material - Price and Availability |
| (1) | Parts necessary to do this Service Bulletin: |
| None. |
| (2) | Other Spare Parts: |
| None. |
| (3) | Consumables: |
| None. |
| B. | Industry Support Information |
| This rework is part of the PIP2 upgrade process and follows the same warranty regulations as the PIP2 upgrade. |
| C. | Configuration Chart |
|
| Operation Codes DE=Delete RE=Replace RI=Reidentify RM=Remains RW=Rework |
| Change Codes 5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability. |
| Support Codes E=Old parts will be supplied, and can be used at other engine locations. |
| D. | Parts Disposition |
| Rework. |
| E. | Tooling - Price and Availability |
| None. |
| 3. | ACCOMPLISHMENT INSTRUCTIONS |
| A. | General |
| (1) | Remove the TRF (1, Figure 1). Removal instructions for the TRF (1) have not changed. Refer to the GEnx-1B EM, 72-00-04, REMOVAL 001 and DISASSEMBLY 001. |
| (2) | Disassemble the TRF (1, Figure 1). Disassembly instructions for the TRF (1) have not changed. Refer to the GEnx-1B EM, 72-57-00, DISASSEMBLY 001. |
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| (3) | Rework the TRF (1, Figure 1) as follows: |
| NOTE: |
|
| (a) | Rework the TRF (1, Figure 1). Refer to RD 940-351. |
| (b) | Reidentify the TRF (1, Figure 1) as specified in the repair instructions. Refer to RD 940-351. |
| (4) | Assemble the TRF (1, Figure 1). Assembly instructions for the TRF (1) have not changed. Refer to the GEnx-1B EM, 72-57-00, ASSEMBLY 001. |
| (5) | Install the TRF (1, Figure 1). Installation instructions for the TRF (1) have not changed. Refer to the GEnx-1B EM, 72-00-04, ASSEMBLY 001 and INSTALLATION 001. |
