1.PLANNING INFORMATION
A.Effectivity
* * * FOR GEnx-1B54, -1B58, -1B64, -1B67, -1B70, -1B54/P1, -1B58/P1, -1B64/P1, -1B67/P1, -1B70/P1, -1B70/72/P1, -1B70/75/P1, -1B74/75/P1, -1B75/P1
This Service Bulletin is applicable to these GEnx-1B engines:
•
GEnx-1B engines, serial numbers 956-147 thru 956-180.
B.Description
This Service Bulletin addresses the correct spacer configuration for the cowl support spacer for ESNs 956-147 thru 956-180. Spacer P/N 9193M69P23 should be replaced with spacer P/N 2432M35P01.
C.Compliance
Category 5
GE recommends that you do this Service Bulletin as soon as the affected part is removed from the engine. Replace the spacer P/N 9193M69P23 with spacer P/N 2432M35P01.
NOTE:
This Service Bulletin can be accomplished in shop.
This Service Bulletin is offered to improve the reliability or performance of your GE product, or to help prevent the occurrence of the event or condition described in this Service Bulletin. If the operator elects not to participate in the bulletin, that decision will be taken into consideration by GE in evaluating future product performance issues that may arise in the operators fleet.
D.Concurrent Requirements
None.
E.Reason
(1)Objective:
Get the cowl support to the production configuration.
(2)Condition:
Incorrect production configuration.
(3)Cause:
Installation escape.
(4)Improvement:
Change the cowl support to the production configuration.
(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
After you get access to the fan hub frame cowl support ring, you will need approximately 1.5 man-hours for each engine or component.
H.Weight and Balance
Weight and balance are not changed.
I.References (Use the latest version of this document)
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: 573818
 
BPP: 12-72-22-08
J.Publications Affected
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
K.Interchangeability
All parts in this Service Bulletin have to be changed 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:
 
Part Number
Qty/ Eng
Part Name
Unit ($) Price
Pkg Qty
Lead Time Days
 
2432M35P01
(36)
Spacer, Sleeve
29.25
(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-G09
(X)
Propulsor Module Assembly
2376M20G05-G09
(X)
RM
-/-
 
.2432M35P01
30-061, 72-00-02
(36)
Spacer, Sleeve (SIN 95070)
.9193M69P23
30-060, 72-00-02
(36)
RE
5/E
Operation Codes
RE=Replace
RM=Remains
Change Code 5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability.
Support Code 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.
E.Tooling - Price and Availability
None.
3.ACCOMPLISHMENT INSTRUCTIONS
A.No Change.