 | GEnx-1B SERVICE BULLETIN - 75-0013 R00 | Revised: 06/10/2014 |
| SB 75-0013 R00 AIR SYSTEM - Air Anti-Ice Manifold - (75-11-40) - Booster Anti-Ice Manifold Improvement | Issued: 06/10/2014 | |
| GEnx-1B SERVICE BULLETIN - 75-0013 R00 | Revised: 06/10/2014 |
| SB 75-0013 R00 AIR SYSTEM - Air Anti-Ice Manifold - (75-11-40) - Booster Anti-Ice Manifold Improvement | Issued: 06/10/2014 | |
| 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 (2014) General Electric Company, U.S.A. |
| 1. | PLANNING INFORMATION |
| A. | Effectivity |
|
| This Service Bulletin is applicable to these GEnx-1B engines: |
| • |
|
| This Service Bulletin has been introduced in production to these GEnx-1B engines: |
| • |
|
| These serial numbers are the best available data. |
| B. | Description |
| This Service Bulletin provides a new configuration of booster anti-ice (BAI) hardware. |
| C. | Compliance |
| Category 7 |
| GE recommends that you do this Service Bulletin at customer's convenience. |
| NOTE: |
|
| D. | Concurrent Requirements |
| None. |
| E. | Reason |
| (1) | Objective: |
| To introduce new parts. |
| The purpose of these changes is to minimize air leakage at the splitter interface. |
| (2) | Condition: |
| The current design uses feeders with a large clearance gap at the splitter/BAI interface resulting in air leakage. |
| (3) | Cause: |
| The current BAI feeders have a clearance hole where they interface with the splitter which results in some air leakage. |
| The current BAI uses a half-shell wye as is conventional. It is believed that the wye causes a recirculation air bubble at the junction. |
| (4) | Improvement: |
| The proposed BAI manifold improves the overall flow characteristics of the system. |
| (5) | Substantiation: |
| Substantiation is by analysis and 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 |
| The complete compliance with this Service Bulletin decreases weight by 0.35 lb (0.16 kg). |
| 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 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| K. | Interchangeability |
| 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: |
|
| NP = Not Provisioned |
| *Part not supplied by GE Engine Services Distribution L.L.C. Procure through local purchase. |
| 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. E=Old parts will be supplied, and can be used at other engine locations. |
| D. | Parts Disposition |
| Use serviceable old parts at other engine locations and for engines that have not changed. |
| E. | Tooling - Price and Availability |
| None. |
| 3. | ACCOMPLISHMENT INSTRUCTIONS |
| A. | General |
| (1) | Removal instructions for the booster anti-ice manifold have not changed. Refer to the GEnx-1B EM, 72-00-01, REMOVAL 001. |
| (2) | Installation instructions for the booster anti-ice manifold have not changed. Refer to the GEnx-1B EM, 72-00-01, INSTALLATION 001, CONFIG 02. |