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 956-161 and up.
These serial numbers are the best available data.
The aft fan case vapor barrier (vapor barrier) P/N 2360M41P02 is affected by this Service Bulletin.
B.Description
This Service Bulletin releases the new vapor barrier P/N 2416M46P01.
C.Compliance
Category 7
GE recommends that you do this Service Bulletin at customer's convenience.
NOTE:
This Service Bulletin can be accomplished in shop.
D.Concurrent Requirements
None.
E.Reason
(1)Objective:
To reduce cost of ownership.
(2)Condition:
Not applicable.
(3)Cause:
Not applicable.
(4)Improvement:
The material of the vapor barrier changes from Ti 6-4 to Inco 718.
(5)Substantiation:
Substantiation is by 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 increases weight by 0.53 lb (0.24 kg).
I.References (Use the latest version of these documents)
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)
NOTE:
The reference documents listed below are for the engine manufacturer's internal use only:
 
CID: 547351
 
BPP: 08-72-21-11
J.Publications Affected
GEK 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR)
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
K.Interchangeability
Two-way interchangeable.
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
 
2416M46P01
(1)
Vapor Barrier
Quote
(X)
Quote
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
 
2305M18G07
(X)
Assembly, Aft Fan Stator Case
(SIN 00109)
2305M18G07
(X)
RM
-/-
 
.2416M46P01
01-190A, 72-21-00
(1)
Barrier, Aft Fan Case Vapor (Old Name)
Vapor Barrier (New Name)
(SIN 84405)
.2360M41P02
01-190, 72-21-00
(1)
RE
2/B
Operation Codes
RE=Replace
RM=Remains
Change Code 2=Two-way interchangeable.
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 installation instructions for the vapor barrier have not changed. Refer to GEnx-1B EM, 72-21-00, DISASSEMBLY 001 and ASSEMBLY 001.