 | GEnx-1B SERVICE BULLETIN - 72-0358 R00 | Revised: 05/08/2018 |
| SB 72-0358 R00 ENGINE - Fan Stator Assembly (72-21-00) - Fan Case B-Flange Fasteners Clarification | Issued: 05/08/2018 | |
| GEnx-1B SERVICE BULLETIN - 72-0358 R00 | Revised: 05/08/2018 |
| SB 72-0358 R00 ENGINE - Fan Stator Assembly (72-21-00) - Fan Case B-Flange Fasteners Clarification | Issued: 05/08/2018 | |
| 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 (2018) General Electric Company, U.S.A. |
| 1. | PLANNING INFORMATION |
| A. | Effectivity |
| * * * FOR GEnx-1B64/P2, -1B67/P2, -1B70/75/P2, -1B70/P2, -1B70C/P2, -1B74/75/P2, -1B76A/P2 |
| This Service Bulletin is applicable to all GEnx-1B PIP 2 engines. |
| The machine bolts (bolts) P/N AS3238-28 installed on the fan case B-flange (B-flange) are affected by this Service Bulletin. |
| B. | Description |
| This Service Bulletin updates the next higher assembly of the affected bolts in the GEnx-1B Engine Illustrated Parts Catalog (EIPC) for PIP 2 engines. |
| C. | Compliance |
| Category 9 |
| Information only. |
| Impact F |
| Implement as deemed necessary per the Service Bulletin Category. |
| D. | Concurrent Requirements |
| None. |
| E. | Reason |
| (1) | Objective: |
| To update the GEnx-1B EIPC. |
| (2) | Condition: |
| There are no bolts available on the fan stator module assemblies P/N 2447M18G01 and P/N 2447M18G02. |
| (3) | Cause: |
| This is because the fan stator module assemblies P/N 2447M18G01 and P/N 2447M18G02 involved stator grind, which requires the forward and aft fan cases to be mated using B-flange bolts. With all B-flange bolts currently listed under the fan stator module assemblies P/N 2305M15G08 through P/N 2305M15G11 (an assembly after the fan stator module assemblies P/N 2447M18G01 and P/N 2447M18G02 level), there would be no bolts available on the fan stator module assemblies P/N 2447M18G01 and P/N 2447M18G02. |
| (4) | Improvement: |
| The introduction of B-flange bolts and fasteners to the fan stator module assemblies P/N 2447M18G01 and P/N 2447M18G02 allows the stator grind with the forward and aft fan cases mated. |
| (5) | Substantiation: |
| Substantiation is by 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 |
| Weight and balance are not changed. |
| I. | References (Use the latest version of these documents) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| NOTE: |
|
| J. | Publications Affected |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| K. | Interchangeability |
| Not applicable. |
| 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 |
| None. |
| C. | Configuration Chart |
|
| Operation Codes AD=Add DE=Delete RM=Remains QTC=Quantity Change |
| Change Codes 5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability. |
| Support Codes None. |
| D. | Parts Disposition |
| None. |
| E. | Tooling - Price and Availability |
| None. |
| 3. | ACCOMPLISHMENT INSTRUCTIONS |
| A. | Not applicable. |