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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 (2018) 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 958-102 and up.
These serial numbers are the best available data.
The sensor VIN APT-440-1000-100A (P/N 2435M01P01), transducer support bracket P/N 2446M02G01, manifold P/N 2437M31G01, W09 harnesses VIN 508372-6 (P/N 2443M56P01), VIN 508372-8 (P/N 2608M91P01), VIN 508372-9 (P/N 2443M56P02), and VIN 508372-10 (P/N 2777M85P01), and machine bolt P/N MS9556-08 are affected by this Service Bulletin.
B.Description
This Service Bulletin introduces a new air pressure sensor (sensor) VIN APT-440A-1000-100A (P/N 2482M06P01), transducer support bracket P/N 2776M71G01, signal air tube (manifold) P/N 2776M72G01, and W09 harness VIN 508372-11 (P/N 2776M73P01).
C.Compliance
Category 7
GE recommends that you do this Service Bulletin at customer's 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 new parts.
The objective is to simplify the BAI pressure subsystem by replacing the two separate single-channel sensors with one dual-channel sensor and the corresponding configuration hardware.
(2)Condition:
The introduction of the new BAI pressure subsystem simplifies the current configuration with no effect on performance or operational characteristics of the system.
(3)Cause:
The change in the BAI sense system is a result of engineering changes to simplify the configuration.
(4)Improvement:
The new dual-channel sensor and interfacing hardware simplifies the configuration by using just one sensor and eliminating one bracket, one sense line, and one W09 harness branch.
(5)Substantiation:
Substantiation is by analysis and 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
After you get access to the BAI pressure sensor system, you will need approximately 3 man-hours for each engine or component.
H.Weight and Balance
The complete compliance with this Service Bulletin decreases weight by 0.5 lb (0.2 kg).
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 114050, GEnx-1B Component Maintenance Manual (CMM), 77-34-06
NOTE:
The reference documents listed below are for the engine manufacturer's internal use only:
CID: 551207
BPP/EPEX No.: 15-30-21-45381
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)
GEK 114050, GEnx-1B Component Maintenance Manual (CMM), 77-34-06
K.Interchangeability
Qualified interchangeability.
The new parts must be introduced as a set. The old and new configurations cannot be mixed.
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 APT-440A-1000-100A* (2482M06P01)
(1)
Sensor, Air Pressure
NP
(-)
--
 
2776M71G01
(1)
Bracket, Transducer Support
751.00
(1)
Quote
 
2776M72G01
(1)
Tube, Signal Air
5,076.00
(1)
Quote
 
VIN 508372-11** (2776M73P01)
(1)
Harness, W09
NP
(-)
--
NP = Not Provisioned
*Part not supplied by GE Engine Services Distribution L.L.C. To procure parts, contact the following Kulite spare parts distributor:
North America:
Richard Sheldon E-mail: richard.sheldon@kellstrommaterials.com
Phone: +1 847-233-5923
Europe and China:
Walter Buser E-mail: walter.buser@kellstrommaterials.com
Phone: +1 631-962-1517
**Part not supplied by GE Engine Services Distribution L.L.C. To procure parts, contact the following:
Unison Industries Inc. 7575 Baymeadows Way Jacksonville, Florida 32256-8514 U.S.A.
OR
Customers (non-direct) are invited to contact the AAR CORP. representative at:
E-mail: unison.distribution@aarcorp.com Phone: +1 800-422-2213
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
 
2447M20G01/
G02/G03/G04/
G05
(X)
Propulsor Module Assembly
2447M20G01/
G02/G03/G04/
G05
(X)
RM
-/-
 
2376M20G05/
G06/G07/G08/
G09
(X)
Propulsor Module Assembly
2376M20G05/
G06/G07/G08/
G09
(X)
RM
-/-
 
.VIN APT-440A-1000-100A (2482M06P01)
01-170A, 75-11-30
(1)
Sensor
(Old Name)
Sensor, Air Pressure
(New Name)
(SIN 63701)
.VIN APT-440-1000-100A (2435M01P01)
01-170, 75-11-30
(2)
RE/QTC
5/C
 
.2776M71G01
30-220A, 72-00-02
(1)
Bracket, Transducer Support
(SIN 63715)
.2446M02G01
30-220, 72-00-02
(1)
RE
5/B
 
.2776M72G01
01-150A, 75-11-30
(1)
Manifold
(Old Name)
Tube, Signal Air
(New Name)
(SIN 63709)
.2437M31G01
01-150, 75-11-30
(1)
RE
5/B
 
.VIN 508372-11 (2776M73P01)
40-010D, 73-21-65
(1)
Harness, W09
(SIN 67008)
.VIN 508372-10 (2777M85P01)
40-010B, 73-21-65
(1)
RE
5/C
 
.VIN 508372-11 (2776M73P01)
40-010D, 73-21-65
(1)
Harness, W09
(SIN 67008)
.VIN 508372-8 (2608M91P01)
40-010A, 73-21-65
(1)
RE
5/C
 
.MS9556-08
01-190A, 75-11-30
(2)
Bolt, Machine
(SIN 63725)
.MS9556-08
01-190, 75-11-30
(4)
QTC
5/E
 
.VIN 508372-11 (2776M73P01)
40-010D, 73-21-65
(1)
Harness, W09
(SIN 67008)
.VIN 508372-6 (2443M56P01)
40-010, 73-21-65
(1)
RE
5/C
 
.VIN 508372-11 (2776M73P01)
40-010D, 73-21-65
(1)
Harness, W09
(SIN 67008)
.VIN 508372-9 (2443M56P02)
40-010C, 73-21-65
(1)
RE
5/C
Operation Codes
QTC=Quantity Change RE=Replace
RM=Remains
Change Codes
5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability.
Support Codes
B=Old parts will be supplied until all old parts are sold. C=Old parts will be supplied until June 2020. E=Old parts will be supplied, and can be used at other engine locations.
D.Parts Disposition
Use serviceable old parts for engines that have not changed.
E.Tooling - Price and Availability
None.
3.ACCOMPLISHMENT INSTRUCTIONS
A.Removal
(1)Remove the old W09 harness (1, Figure 1) as follows:
(a)For on-wing procedure, refer to the GEnx-1B Boeing 787 AMM, G73-22-01, DMC-B787-A-G73-22-01-00A-520A-A.
(b)For in-shop procedure, refer to the GEnx-1B EM, 72-00-00, DISASSEMBLY 001.
(2)Remove the old manifold (2, Figure 1) as follows:
(a)For on-wing removal, do as follows:
1Disconnect the old manifold (2) from the old sensors (3) and BAI air downstream duct tube (tube) (5).
2Remove the old manifold (2).
(b)For in-shop procedure, refer to the GEnx-1B EM, 72-00-02, DISASSEMBLY 002, CONFIG 01, Subtask 72-00-02-030-472 or CONFIG 02, Subtask 72-00-02-030-553.
(3)Remove the old sensors (3, Figure 1) as follows:
(a)For on-wing procedure, refer to the GEnx-1B Boeing 787 AMM, G75-11-02, DMC-B787-A-G75-11-02-00A-520A-A.
(b)For in-shop procedure, do as follows:
1Remove the machine bolts (4, Figure 1) that attach the sensors (3) to the old transducer support bracket (6).
2Remove the old sensors (3).
(4)Remove the engine anti-ice (EAI) controller (1, Figure 2) as follows:
(a)For on-wing procedure, refer to the GEnx-1B Boeing 787 AMM, 30-21-03, DMC-B787-A-30-21-03-01B-520A-A.
(b)For in-shop procedure, refer to the GEnx-1B EM, 72-00-02, DISASSEMBLY 002, CONFIG 01, Subtask 72-00-02-030-462 or CONFIG 02, Subtask 72-00-02-030-554.
(5)Remove the support EAI controller bracket (5, Figure 2) and the old transducer support bracket (6) as follows:
(a)Remove the machine bolts (7), washers (8), and blank off plate (9) that attach the support EAI controller bracket (5) and the old transducer support bracket (6) to the support cowl (10).
(b)Remove the support EAI controller bracket (5) and the old transducer support bracket (6).
B.Installation
(1)Install the support EAI controller bracket (5, Figure 2) and the new transducer support bracket (6) as follows:
(a)Install the support EAI controller bracket (5) and the new transducer support bracket (6) on the support cowl (10) at the 1:00 o'clock position as follows:
1Install the machine bolts (7) and washers (8) in the support cowl (10) with the blank off plate (9).
2Attach the support EAI controller bracket (5) and the new transducer support bracket (6) with the machine bolts (7).
3Torque the machine bolts (7) to 32 to 38 lb in. (3.6 to 4.2 Nm).
(2)Install the EAI controller (1, Figure 2) as follows:
(a)For on-wing procedure, refer to the GEnx-1B Boeing 787 AMM, 30-21-03, DMC-B787-A-30-21-03-01B-720A-A.
(b)For in-shop procedure, refer to the GEnx-1B EM, 72-00-02, ASSEMBLY 005, CONFIG 02.
(3)Install the new manifold (8, Figure 1) and the new sensor (9) as follows:
(a)Put the new sensor (9) in position on the new transducer support bracket (11).
(b)Install the two machine bolts (10) that attach the new sensor (9) to the new transducer support bracket (11).
(c)Tighten the two machine bolts (10) to 49 to 57 lb in. (5.5 to 6.4 Nm).
(d)Install the new manifold (8) to the tube (5). Do not torque the manifold (8) B-nut at this time.
(e)Install the new manifold (8) to the new sensor (9). Do not torque the manifold (8) B-nut at this time.
(f)Torque the new manifold (8) B-nut attached to the tube (5) to 262 to 308 lb in. (29.6 to 34.7 Nm).
(g)Torque the new manifold (8) B-nut attached to the new sensor (9) to 143 to 167 lb in. (16.1 to 18.8 Nm).
(4)Install the new W09 harness (7) as follows:
(a)For on-wing procedure, refer to the GEnx-1B Boeing 787 AMM, G73-22-01, DMC-B787-A-G73-22-01-00A-720A-A.
NOTE:
The only change from the existing procedure is that the P099 connector, of the W09 harness (7, Figure 1), is the only available connector for the new sensor (9).
(b)For in-shop procedure, refer to the GEnx-1B EM, 72-00-00, ASSEMBLY 001.
NOTE:
The only change from the existing procedure is that the P099 connector, of the W09 harness (7, Figure 1), is the only available connector for the new sensor (9).
Sensor and Attaching Hardware Location
Figure 1   (Sheet 1)
Sensor and Attaching Hardware Location
Figure 1   (Sheet 2)
EAI Controller Location
Figure 2   (Sheet 1)
EAI Controller Location
Figure 2   (Sheet 2)