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Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION Number: 767-29-0113 Original Issue: May 29, 2013 ATA System: 2911 SUBJECT: MAIN HYDRAULIC SYSTEMS - Center Hydraulic System Air Driven Pump (ADP) - Turbine Gearbox Assembly (TGA) Replacement Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.
9E991ECCN:
BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2013 Boeing.
Unpublished Work. All Rights Reserved.
Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, KC-10, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing.
Original Issue: May 29, 2013 767-29-0113 1 of 26
3.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 2 of 26 BOEING SERVICE BULLETIN 767-29-0113
BLANK PAGE
Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected ........................................ 1 0 B. Concurrent Requirements ...................................... 1 0 C. Reason ................................................ 1 0 D. Description .............................................. 1 1 E. Compliance .............................................. 1 1 F. Approval ............................................... 1 1 G. Manpower .............................................. 1 1 H. Weight and Balance Changes .................................... 1 2 I. Electrical Load Data ......................................... 1 3 J. References .............................................. 1 3
1. Existing Data: ......................................... 1 3
2. Data Supplied with this Service Bulletin: ........................... 1 3
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 1 3 K. Publications Affected ........................................ 1 3 L. Interchangeability and Intermixability of Parts ........................... 1 4 M. Software Accomplishment Summary ................................ 1 4
2. MATERIAL INFORMATION ........................................ 1 5 A. Material - Price and Availability ................................... 1 5 B. Industry Support Information .................................... 1 5 C. Parts Necessary for Each Airplane ................................. 1 5
1. Kits/Parts ............................................ 1 5
2. Parts and Materials Supplied by the Operator ........................ 1 5
3. Parts Modified and Reidentified ................................ 1 6
4. Parts Removed and Not Replaced .............................. 1 6 D. Parts Necessary to Change Spares ................................. 1 6 E. Special Tooling - Price and Availability ............................... 1 6 F. Special Tooling Necessary to do this Service Bulletin ....................... 1 6
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 1 7 A. GENERAL INFORMATION ..................................... 1 7 B. WORK INSTRUCTIONS ....................................... 1 8 FIGURE 1: TURBINE GEARBOX ASSEMBLY (TGA) - AIRPLANE SKIN INTERFACE - BOTTOM AND TOP AFT TIE ROD ASSEMBLY - DISCONNECT [Group 1, Configuration 1] .......... 1 9 FIGURE 2: TURBINE GEARBOX ASSEMBLY (TGA) - TGA INTERFACE - BOTTOM AND TOP AFT TIE ROD ASSEMBLY - REMOVAL [Group 1, Configuration 1] .................. 2 2 FIGURE 3: TURBINE GEARBOX ASSEMBLY (TGA) - AIRPLANE SKIN INTERFACE - BOTTOM AND TOP AFT TIE ROD ASSEMBLY - INSTALLATION [Group 1, Configuration 1] .......... 2 4 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 3 of 26 BOEING SERVICE BULLETIN 767-29-0113
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 4 of 26 BOEING SERVICE BULLETIN 767-29-0113
BLANK PAGE
Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION SummaryNumber: 767-29-0113Original Issue: May 29, 2013 ATA System: 2911 SUBJECT: MAIN HYDRAULIC SYSTEMS - Center Hydraulic System Air Driven Pump (ADP) - Turbine Gearbox Assembly (TGA) Replacement BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.
CONCURRENT REQUIREMENTS None.
BACKGROUND Accomplishment of this service bulletin will make sure that the existing Air Driven Pump (ADP) Turbine Gearbox Assembly (TGA) of the Center Hydraulic System is replaced with an improved ADP TGA. The improved ADP TGA includes significant changes of the containment capabilities over the existing design. The new design minimizes the risk of external damage associated with fractures to the ADP TGA and the release of high energy fragments during an ADP TGA turbine wheel burst. If the existing ADP TGA is not replaced, and an uncontained turbine wheel burst occurs, high energy fragments could cause damage to the airplane and hazards to persons or property on the ground.
Analysis by Boeing finds that the existing ADP TGA design cannot adequately contain fragments caused by a ADP TGA turbine wheel burst.
Operators have reported uncontained failures of the ADP TGA turbine wheel when flight crews noticed a reduction in center hydraulic system pressure, and upon landing, found damage to the ADP TGA, left aft wing-to-body fairing, and airplane skin.
This service bulletin gives instructions to replace the existing ADP TGA with an improved ADP TGA that can adequately contain a turbine burst event should one occur.
Boeing Service Related Problem (SRP) 767-SRP-29-0083 is related to this service bulletin.
Service History ReportCycles/Years/Hours ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 41,004 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 8,522 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 5 of 26
Service History ReportCycles/Years/Hours ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 2,021 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 29,189 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 31,827 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 33,968 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 35,743 This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedNoSpares Affected Paragraph 1.E., Compliance and Paragraph
1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesYesWeight and Balance Change Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/PartsNoKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator YesOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION (PRR B12901-104S) Remove the existing ADP TGA.
Install a new ADP TGA.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 6 of 26 BOEING SERVICE BULLETIN 767-29-0113
EFFECTIVITY 767-400ER Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s).
COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.
Boeing recommends that the change given in this service bulletin be done within 36 months after the original issue date of this service bulletin.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the repair procedures given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 7 of 26 BOEING SERVICE BULLETIN 767-29-0113
BOEING SERVICE BULLETIN 767-29-0113
AFT LEFT
WING/BODY
FAIRING FWD
REMOVE THE AIR DRIVEN PUMP EXISTING ADP TGA.
(ADP) ASSEMBLY INSTALL THE NEW
ADP TGA TGA,
SHOWN WITHOUT
PROTECTIVE
BLANKET INSTALLED
TURBINE/GEARBOX
ASSEMBLY (TGA)
AIR DRIVEN PUMP 2098669 Original Issue: May 29, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 767-29-0113 Work - See page 1 for details. 8 of 26
Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION Number: 767-29-0113 Original Issue: May 29, 2013 ATA System: 2911 SUBJECT: MAIN HYDRAULIC SYSTEMS - Center Hydraulic System Air Driven Pump (ADP) - Turbine Gearbox Assembly (TGA) Replacement BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes This service bulletin is for the airplane(s) shown below. An equivalent change is on subsequent production airplanes. Refer to PRR B12901-104S for data about this change.
Refer to Service Bulletin Index D624T001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
DESCRIPTIONCONFIGURATIONGROUP 767-400ER Airplanes.-1 Airplanes with Protective Blanket installed on the Turbine Gearbox Assembly.
1 Airplanes without Protective Blanket installed on Turbine Gearbox Assembly.
2 Airplane Models:
767-400ER GroupVariable Number 1VQ001 - VQ021 1VQ071 - VQ086 1VQ111 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 9 of 26
2. Spares Affected None.
B. Concurrent Requirements None.
C. Reason Accomplishment of this service bulletin will make sure that the existing Air Driven Pump (ADP) Turbine Gearbox Assembly (TGA) of the Center Hydraulic System is replaced with an improved ADP TGA. The improved ADP TGA includes significant changes of the containment capabilities over the existing design. The new design minimizes the risk of external damage associated with fractures to the ADP TGA and the release of high energy fragments during an ADP TGA turbine wheel burst. If the existing ADP TGA is not replaced, and an uncontained turbine wheel burst occurs, high energy fragments could cause damage to the airplane and hazards to persons or property on the ground.
Analysis by Boeing finds that the existing ADP TGA design cannot adequately contain fragments caused by a ADP TGA turbine wheel burst.
Operators have reported uncontained failures of the ADP TGA turbine wheel when flight crews noticed a reduction in center hydraulic system pressure, and upon landing, found damage to the ADP TGA, left aft wing-to-body fairing, and airplane skin.
This service bulletin gives instructions to replace the existing ADP TGA with an improved ADP TGA that can adequately contain a turbine burst event should one occur.
Boeing Service Related Problem (SRP) 767-SRP-29-0083 is related to this service bulletin.
Service History ReportCycles/Years/Hours ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 41,004 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 8,522 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 2,021 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 29,189 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 31,827 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 10 of 26 BOEING SERVICE BULLETIN 767-29-0113
Service History ReportCycles/Years/Hours ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 33,968 ADP TGA Turbine wheel burst resulted in fractures to the ADP TGA and release of high energy fragments. Release of the high energy fragments resulted in airplane damage.
TGA Service Hours 35,743 D. Description Remove the existing ADP TGA.
Install a new ADP TGA.
The work in this service bulletin is done in the maintenance zone(s) given below.
Affected Maintenance Zones ZoneModel 197767-400ER E. Compliance The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.
Boeing recommends that the change given in this service bulletin be done within 36 months after the original issue date of this service bulletin.
F. Approval This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes.
If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin.
G. Manpower The table below shows an estimate of the task hours necessary to do this change for each airplane.
This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator task hour data if necessary. The estimate does not include lost time. These are some examples of lost time:
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 11 of 26 BOEING SERVICE BULLETIN 767-29-0113
Time to adjust to the workplace Time to schedule the work Time to inspect the work Time to cure the materials Time to make the parts Time to find the tools.
Group 1, Configuration 1:
Elapsed HoursTask HoursNumber of PersonsTask
1.6253.252Remove Existing
ADP TGA --1FIGURE 1
0.250.251FIGURE 2 --1FIGURE 3
1.6253.252Install New ADP TGA
3.506.75TOTAL FOR EACH AIRPLANE Group 1, Configuration 2:
Elapsed HoursTask HoursNumber of PersonsTask
1.6253.252Remove Existing
ADP TGA
1.6253.252Install New ADP TGA
3.256.50TOTAL FOR EACH AIRPLANE The time to make the change to the Air Driven Pump (ADP) Turbine Gearbox Assembly (TGA) in accordance with Fairchild Controls SB N012000000-29-03 R2 Service Bulletin is not included.
Group 1, Configuration 1:
The time to do the task in Figure 1 and Figure 3 is already given in the Removal and Installation of the ADP TGA.
H. Weight and Balance Changes Group 1, Configuration 1:
Change in Moment (Pound-Inches) Change in Weight (Pounds)Airplane +5350.7 lb.-in.+4.6 lb.767-400ER Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 29, 2013 767-29-0113 12 of 26 BOEING SERVICE BULLETIN 767-29-0113