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Copyright (2017) General Electric Company, U.S.A.
1.PLANNING INFORMATION
A.Effectivity
* * * FOR GEnx-1B64, -1B64/P1, -1B64/P2, -1B67, -1B67/P1, -1B67/P2, -1B70, -1B70/75/P1, -1B70/75/P2, -1B70/P1, -1B70/P2, -1B70C/P1, -1B70C/P2, -1B74/75/P1, -1B74/75/P2, -1B76A/P2
This Service Bulletin has been introduced in production to these GEnx-1B engines:
•
GEnx-1B engines, serial numbers less than 956-330 with tube P/N 2450M18G01.
These serial numbers are the best available data.
The booster anti-ice air sense tube (sense tube) P/N 2445M62G01 is affected by this Service Bulletin.
B.Description
This Service Bulletin provides a new field configuration for the booster anti-ice (BAI) downstream tube, so the anti-ice valve (BAI valve) VIN 63292047-2 (P/N 2045M87P07) can be used with tube P/N 2450M18G01, by removing the sense tube P/N 2445M62G01 and capping the port at the mentioned old duct.
C.Compliance
Category 7
GE recommends that you do this Service Bulletin at customer's convenience or option.
Impact F
Implement as deemed necessary per the Service Bulletin Category.
NOTE:
This Service Bulletin can be done on wing or in shop.
D.Concurrent Requirements
None.
E.Reason
(1)Objective:
To introduce a new field configuration for the BAI valve downstream tube.
(2)Condition:
Post-GEnx-1B S/B 75-0011 resulted in two fielded configurations for the BAI valve and surrounding hardware:
(a)BAI valve VIN 3291779-4 (P/N 2045M87P04) or VIN 3291779-6 (P/N 2045M87P06), with the tube P/N 2450M18G01 and sense tube P/N 2445M62G01 that connects the valve and the sense tube P/N 2445M62G01.
(b)BAI valve VIN 63292047-2 (P/N 2045M87P07) and Booster anti-ice air downstream duct tube (tube) P/N 2550M88G01. The sense tube in this configuration is not required.
Per voice of the customer, it is required to define a field configuration to allow the use of the BAI valve VIN 63292047-2 (P/N 2045M87P07) with the tube P/N 2450M18G01. The proposed field configuration removes the sense tube P/N 2445M62G01 and caps the remaining port.
(3)Cause:
It is required to define the field configuration to allow the use of the BAI valve VIN 63292047-2 (P/N 2045M87P07) on all engines without the need to replace the tube P/N 2450M18G01.
(4)Improvement:
This Service Bulletin authorizes a new field configuration with the following hardware:
(a)BAI valve VIN 63292047-2 (P/N 2045M87P07).
(b)Tube P/N 2450M18G01.
(c)Tube cap assembly P/N J1314G106.
(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)
GEnx-1B, Boeing 787 Aircraft Maintenance Manual (AMM)
GEK 112851, GEnx-1B Engine Manual (EM)
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
GEnx-1B S/B 75-0011, AIR - Booster Anti-Ice Valve (75-11-30) - Booster Anti-Ice Valve Improvement
NOTE:
The reference documents listed below are for the engine manufacturer's internal use only:
CID: 573917, 575082, 575868
BPP/EPEX: 16-72-00-54903
J.Publications Affected
GEnx-1B, Boeing 787 Aircraft Maintenance Manual (AMM)
GEK 112851, GEnx-1B Engine Manual (EM)
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
K.Interchangeability
The BAI valve VIN 63292047-2 (P/N 2045M87P07) can be used with the tube P/N 2450M18G01 by removing the sense tube P/N 2445M62G01 and capping the port at the mentioned old tube P/N 2450M18G01.
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
 
J1314G106
(1)
Cap Assembly, Tube
196.00
(1)
5
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
 
(FIELD ONLY)
 
2447M20G01/
G02/G03
(X)
Assembly, Propulsor Module
2447M20G01/
G02/G03
(X)
RM
-/-
 
2376M20G02/
G03/G04/G05/
G06/G07/G08/
G09
(X)
Propulsor Module Assembly
2376M20G02/
G03/G04/G05/
G06/G07/G08/
G09
(X)
RM
-/-
 
.VIN 63292047-2
(2045M87P07)
01-010A, 75-11-30
(1)
Valve, Anti-Ice
(SIN 63700)
.VIN 3291779-4
(2045M87P04)
01-010, 75-11-30
(1)
RE
5/-
 
.VIN 63292047-2
(2045M87P07)
01-010C, 75-11-30
(1)
Valve, Anti-Ice
(SIN 63700)
.VIN 3291779-6
(2045M87P06)
01-010B, 75-11-30
(ALT)
RE
5/-
 
.2450M18G01
01-030A, 75-11-30
(1)
Tube, Booster Anti-Ice Air Downstream Duct
(SIN 63703)
.2450M18G01
01-030A, 75-11-30
(1)
RM
-/-
 
--
(-)
Tube, Booster Anti-Ice Air Sense
(SIN 63708)
.2445M62G01
01-040, 75-11-30
(1)
DE
5/-
 
.J1314G106
01-045, 75-11-30
(1)
Cap Assembly, Tube
(SIN 63762)
--
(-)
AD
5/-
Operation Codes
AD=Add
DE=Delete
RE=Replace
RM=Remains
Change Codes
5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability.
D.Parts Disposition
None.
E.Tooling - Price and Availability
None.
3.ACCOMPLISHMENT INSTRUCTIONS
A.General
(1)Remove the BAI valve (1, Figure 1). Refer to the GEnx-1B EM, 72-00-02, DISASSEMBLY 002, CONFIG 01 or CONFIG 02 or GEnx-1B, Boeing 787 AMM, TASK DMC-B787-A-G75-11-01-00A-520A-A.
(2)Remove the sense tube (2, Figure 1).
(3) Install the tube cap assembly (2, Figure 2) on the duct (3).
(a)Torque the tube cap assembly (2) to 263 to 307 lb in. (29.7 to 34.6 Nm).
(4)Install the BAI valve (1, Figure 2). Refer to the GEnx-1B EM, 72-00-02, ASSEMBLY 005, CONFIG 01 or CONFIG 02 or GEnx-1B, Boeing 787 AMM, TASK DMC-B787-A-G75-11-01-00A-720A-A.
BAI Valve - Old Configuration
Figure 1  
BAI Valve - New Configuration
Figure 2