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 (2013) General Electric Company, U.S.A.
1.PLANNING INFORMATION
A.Effectivity
* * * FOR GEnx-1B54, -1B58, -1B64, -1B67, -1B70
This Service Bulletin has been introduced in production to these GEnx-1B engines:
•
GEnx-1B engines, serial numbers 956-140 and up
.
These serial numbers are the best available data.
The tube P/N 2437M29G01 and split bushing P/N 9352M41P08
are
affected by this Service Bulletin.
B.Description
This Service Bulletin releases a new booster anti-ice duct with integrated wear sleeve P/N 2450M18G01.
C.Compliance
Category 7
GE recommends that you do this Service Bulletin at customer's convenience or option.
NOTE:
This Service Bulletin can be accomplished in shop.
D.Concurrent Requirements
None.
E.Reason
(1)Objective:
To introduce a new part.
(2)Condition:
The current design has separate wear sleeves, which are installed on a section of the tube that has a butt weld which makes the assembly of the tube, wear sleeves clamp, and bracket difficult.
(3)Cause:
During certification vibration testing of the original tube it was found that it needed additional support. There was insufficient time to get a new tube made to support this vibration testing, so separate snap-on wear sleeves were released.
(4)Improvement:
This proposed design integrates the wear sleeve as a welded on item, and moves the manufacturing process weld away from the clamping location.
(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 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
NOTE:
The reference document listed below is for the engine manufacturer's internal use only:
 
CID: 547904
J.Publications Affected
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
K.Interchangeability
The proposed configuration will be introduced as qualified interchangeable. The proposed and superseded configurations must be introduced in complete engine sets. Mixing the details of the proposed and superseded configurations in the same engine is not permitted.
L.Software Accomplishment Summary
Not applicable.
2.MATERIAL INFORMATION
A.Material - Price and Availability
(1)Parts necessary to do this Service Bulletin:
 
Part Number
Qty/ Eng
Part Name
Unit ($) Price
Pkg Qty
Lead Time Days
 
2450M18G01
(1)
Tube, Anti-Ice Air
24,940.00
(1)
30
NOTE:
Prices are provided for planning purposes and are subject to change.
(2)Other Spare Parts:
None.
(3)Consumables:
None.
B.Industry Support Information
None.
C.Configuration Chart
 
New Part Number
Qty/ Eng
Part Name
Old Part Number/ IPC Location
Qty/ Eng
Op Code
Chg/ Sprt Code
 
2376M20G05
(X)
Propulsor Module Assembly
2376M20G05
(X)
RM
-/-
 
.2450M18G01
01-030A, 75-11-30
(1)
Tube
(SIN 63703)
.2437M29G01
01-030, 75-11-30
(1)
RE
5/B
 
--
(-)
Bushing, Split
(SIN 63770)
.9352M41P08
01-200, 75-11-30
(2)
DE
5/B
Operation Codes
DE=Delete
RE=Replace
RM=Remains
Change Code
5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability.
Support Code
B=Old parts will be supplied until all old parts are sold.
D.Parts Disposition
Use serviceable old parts for engines that have not changed.
E.Tooling - Price and Availability
None.
3.ACCOMPLISHMENT INSTRUCTIONS
A.General
(1)Removal and assembly instructions for the booster anti-ice tube have not changed. Refer to GEnx-1B EM, 72-00-02, DISASSEMBLY 002 and ASSEMBLY 005.