TRANSMITTAL INFORMATION
REVISION 1 TO SERVICE BULLETIN 73-0007
Revision 1 is issued to update paragraph 1.E., Reason and 1.K., Interchangeability
.
The original was issued January 12, 2012. Revision bars in the left margin identify changes.
1.PLANNING INFORMATION
A.Effectivity
* * * FOR GEnx-1B54, -1B58, -1B64, -1B67, -1B70
This Service Bulletin is applicable to all GEnx-1B engines.
The electronic engine control (EEC) VIN 114E9586G8 (P/N 2121M82P06) is affected by this Service Bulletin.
B.Description
This Service Bulletin releases a new EEC VIN 114E9586G10 (P/N 2447M85P01) and a new 1B EEC kit P/N 738L357G05.
C.Compliance
Category 7
GE recommends that you do this Service Bulletin at customer's option.
NOTE:
This Service Bulletin can be accomplished on wing or in shop.
D.Concurrent Requirements
None.
E.Reason
(1)Objective:
To introduce new parts.
(2)Condition:
 Old EEC configuration is not prepared to support GEnx engines with thrust above 75,000 pounds.
(3)Cause:
 PS3 transducer has a 750 psi (5171 kPa) design limit. Conditions expected on GEnx models with thrust above 75,000 pounds will exceed this pressure limit.
(4)Improvement:
 New EEC has a PS3 transducer capable of 850 psi (5861 kPa) required for pressure seen when engine operates above 75,000 pounds of thrust.
(5)Substantiation:
Substantiation is by test.
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 engine assembly, you will need approximately 1 man-hour for each engine or component.
H.Weight and Balance
Weight and balance are not changed.
I.References (Use the latest version of these documents)
GEnx-1B Boeing 787 Aircraft Maintenance Manual (AMM)
GEK 112851, GEnx-1B Engine Manual (EM)
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
GEK 114001, Component Maintenance Manual (CMM), 73-21-50
NOTE:
The reference documents listed below are for the engine manufacturer's internal use only:
CID: 573174, 573323
BPP: 10-73-00-03
J.Publications Affected
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
GEK 114001, Component Maintenance Manual (CMM), 73-21-50
K.Interchangeability
The new EEC VIN 114E9586G10 (P/N 2447M85P01) is fully interchangeable with the old EEC VIN 114E9586G8 (P/N 2121M82P06) on GEnx-1B54, -1B58, -1B64, -1B67 and -1B70. Parts added.
 The 1B EEC kit P/N 738L357G04 may be used on all GEnx-1B engines at 75,000 pounds of thrust and below. Otherwise, the old 1B EEC kit P/N 738L357G04 can be reworked to the new 1B EEC kit P/N 738L357G05 by returning the old EEC VIN 114E9586G8 (P/N 2121M82P06) to BAE Systems at the address for rework to VIN 114E9586G10 (P/N 2447M85P01) as follows:
Attn: Ehtesham Ahmed
FADEC International
2000 Taylor Street
Fort Wayne, Indiana 46802-4605
U.S.A.
Phone: 260-434-5251
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
 
VIN 114E9586G10* (2447M85P01)
(1)
Control, Electronic Engine
NP
(-)
--
*Part not supplied by GE Engine Services Distribution L.L.C. Procure through local purchase.
NP = Not Provisioned
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
 
GENX-1B54G02/ G03/G04/G05
(X)
Model List
GENX-1B54G02/ G03/G04/G05
(X)
RM
-/-
 
GENX-1B58G02/ G03/G04/G05
(X)
Model List
GENX-1B58G02/ G03/G04/G05
(X)
RM
-/-
 
GENX-1B64G02/ G03/G04/G05
(X)
Model List
GENX-1B64G02/ G03/G04/G05
(X)
RM
-/-
 
GENX-1B67G02/ G03/G04/G05
(X)
Model List
GENX-1B67G02/ G03/G04/G05
(X)
RM
-/-
 
GENX-1B70G02/ G03/G04/G05
(X)
Model List
GENX-1B70G02/ G03/G04/G05
(X)
RM
-/-
 
.738L357G05
01-012B, 73-21-20
(1)
1B EEC Kit
(SIN 00035)
.738L357G04
01-012A, 73-21-20
(-)
RE/RW
5/B
 
..VIN 114E9586G10 (2447M85P01)
01-013A, 73-21-20
(1)
Control, Electronic Engine
(SIN 65H00)
..VIN 114E9586G8 (2121M82P06)
01-013, 73-21-20
(1)
RE/RW
5/B
 
..2124M23P11
01-014A, 73-21-20
(1)
Software
(SIN 66H00)
..2124M23P11
01-014A, 73-21-20
(1)
RM
-/-
Operation Codes
RE=Replace
RM=Remains
RW=Rework
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
Old EEC can be reworked to new configuration at supplier.
E.Tooling - Price and Availability
None.
3.ACCOMPLISHMENT INSTRUCTIONS
A.Removal and installation
(1)Removal and installation instructions for the EEC have not changed. Refer to the GEnx-1B EM, 72-00-00, DISASSEMBLY 001 and ASSEMBLY 001, and to the GEnx-1B Boeing 787 AMM, 73-21-05.