 | GEnx-1B SERVICE BULLETIN - 72-0317 R00 | Revised: 06/29/2016 |
| SB 72-0317 R00 ENGINE - Fan Stator Module Assembly (72-00-01) - Introduction of New Fan Stator Module Assembly | Issued: 06/29/2016 | |
| GEnx-1B SERVICE BULLETIN - 72-0317 R00 | Revised: 06/29/2016 |
| SB 72-0317 R00 ENGINE - Fan Stator Module Assembly (72-00-01) - Introduction of New Fan Stator Module Assembly | Issued: 06/29/2016 | |
| 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 (2016) 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 |
| This Service Bulletin has been introduced in production to these GEnx-1B engines: |
| • |
|
| These serial numbers are the best available data. |
| The aft fan stator case assembly P/N 2447M18G01 is affected by this Service Bulletin. |
| B. | Description |
| This Service Bulletin releases a new aft fan stator case assembly P/N 2447M18G02. |
| C. | Compliance |
| Category 7 |
| GE recommends that you do this Service Bulletin at customer convenience/option. |
| NOTE: |
|
| D. | Concurrent Requirements |
| None. |
| E. | Reason |
| (1) | Objective: |
| To introduce parts, improve reliability, and for safety. |
| (2) | Condition: |
| The profile bump forward of the fan blade leading edge contributed to a rub event resulting in an in-flight shutdown (IFSD). |
| (3) | Cause: |
| If there is no clearance between the fan blade tip and the aft fan stator case assembly, the fan blade tip rubs and engages into the abradable material; then, the cutting load causes the fan blade to open and traverse axially forward. |
| (4) | Improvement: |
| The elimination of the abradable bump forward of the fan blade leading edge reduces the maximum rub forces that can be generated during a tip rub. The increase in clearance will reduce the likelihood of fan blade tip rubs. |
| (5) | Substantiation: |
| Substantiation is by comparative analysis. |
| F. | Approval |
| The data contained in this Service Bulletin has been reviewed by the appropriate governmental authority 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 decreases weight by 2.46 lb (1.12 kg). |
| I. | References (Use the latest version of these documents) |
| GEnx-1B, Boeing 787 Aircraft Maintenance Manual (AMM) |
| GEK 112851, GEnx-1B Engine Manual (EM) |
| GEK 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| GEnx-1B S/B 72-0309, ENGINE - General (72-00-00) - Fan Stator Module Assembly Rework for GEnx-1B PIP2 Engines |
| GEnx-1B S/B 72-0314, ENGINE - General (72-00-00) - Fan Stator Module Assembly Clearance Increase for GEnx-1B PIP2 Engines |
| NOTE: |
|
| J. | Publications Affected |
| GEK 112851, GEnx-1B Engine Manual (EM) |
| 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: |
|
| NOTE: |
|
| (2) | Other Spare Parts: |
| None. |
| (3) | Consumables: |
| None. |
| B. | Industry Support Information |
| None. |
| C. | Configuration Chart |
|
| Operation Codes RE=Replace RM=Remains RW=Rework |
| Change Codes 1=One-way interchangeable. |
| Support Codes A=Old parts will no longer be supplied. |
| D. | Parts Disposition |
| All parts in production control will be reworked to the new configuration. Fielded hardware to be addressed via GEnx-1B S/B 72-0309 and S/B 72-0314. |
| E. | Tooling - Price and Availability |
| None. |
| 3. | ACCOMPLISHMENT INSTRUCTIONS |
| A. | General |
| (1) | Remove the old fan stator module assembly (Figure 1). Removal instructions have not changed. Refer to the GEnx-1B EM, 72-00-01, REMOVAL 001. |
| (2) | Install the new fan stator module assembly (Figure 1). Installation instructions have not changed. Refer to the GEnx-1B EM, 72-00-01, INSTALLATION 001, CONFIG 02. |
