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Commercial Airplanes 777 Service Bulletin ALERT Number: 777-25A0677 Original Issue: April 25, 2016 ATA System: 2531 SUBJECT: EQUIPMENT FURNISHINGS - Galley - A2 and A3 Galley Hardware Installation Inspection 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 © 2016 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Unpublished Work.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: April 25, 2016 777-25A0677 1 of 29
3.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 2 of 29 BOEING SERVICE BULLETIN 777-25A0677
ALERTALERT
BLANK PAGE
Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected10
B. Concurrent Requirements10
C. Reason10
D. Description10
E. Compliance11
F. Approval11
G. Manpower11
H. Weight and Balance Changes11
I. Electrical Load Data12
J. References12
1. Existing Data:12
2. Data Supplied with this Service Bulletin:12
3. Installation Drawings Used in the Preparation of this Service Bulletin:12
K. Publications Affected12
L. Interchangeability and Intermixability of Parts12
M. Software Accomplishment Summary12
2. MATERIAL INFORMATION13
A. Material - Price and Availability13
B. Industry Support Information13
C. Parts Necessary for Each Airplane13
1. Kits/Parts13
2. Parts and Materials Supplied by the Operator13
3. Parts Modified and Reidentified13
4. Parts Removed and Not Replaced13
D. Parts Necessary to Change Spares13
E. Special Tooling - Price and Availability13
F. Special Tooling Necessary to do this Service Bulletin13
3. ACCOMPLISHMENT INSTRUCTIONS15
A. GENERAL INFORMATION15
B. WORK INSTRUCTIONS16
FIGURE 1: A2 GALLEY - HARDWARE INSTALLATION - INSPECTION18
FIGURE 2: A3 GALLEY - HARDWARE INSTALLATION - INSPECTION20
FIGURE 3: A2 GALLEY - T53 TIE ROD PIN - INSTALLATION22
FIGURE 4: A3 GALLEY - T52 TIE ROD PIN - INSTALLATION24
FIGURE 5: A2 GALLEY - T53 TIE ROD BOLT - INSTALLATION26
FIGURE 6: A3 GALLEY - T52 TIE ROD BOLT - INSTALLATION28
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 3 of 29 BOEING SERVICE BULLETIN 777-25A0677
ALERTALERT
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 4 of 29 BOEING SERVICE BULLETIN 777-25A0677
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Commercial Airplanes 777 Service Bulletin ALERT SummaryNumber: 777-25A0677Original Issue: April 25, 2016 ATA System: 2531 SUBJECT: EQUIPMENT FURNISHINGS - Galley - A2 and A3 Galley Hardware Installation Inspection
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
CONCURRENT REQUIREMENTS None.
BACKGROUND Accomplishment of this service bulletin will make sure that the A2 and A3 Galleys are attached to the T53 and T52 tie rods, respectively, in the overhead support structure and thus prevent the galley from coming loose. If this service bulletin is not done, A2 and A3 galleys not connected to the tie rods may come loose under a 9G load posing a risk of serious injury to passengers and the impedance of escapement routes.
The hardware that attaches the T53 and T52 tie rods to the tripod mount assembly in the A2 and A3 Galleys was found unattached during a routine production inspection of line number 1357 and 1358 airplanes before delivery. The cause was determined to be a change to the galley installation sequence for the airplanes in the effectivity of this service bulletin to correct a galley door binding issue that was occurring in service. This changed installation sequence did not have a robust method to make sure that the tie rods were attached to the galley before delivery. Boeing has implemented a new improved process to make sure that the hardware that attaches the T53 and T52 tie rods to the tripod mount assembly in the A2 and A3 Galleys is attached. Boeing is not aware of any in-service damage to galley parts or surrounding parts due to uninstalled tie rod hardware. There are no known failures in service during normal flight loads. Therefore it is expected that the galley parts and surrounding parts can withstand normal flight loads if the hardware is missing from the tie rod.
This service bulletin gives instructions to do a one-time inspection of the A2 and A3 Galleys to make sure they are connected to the T53 and T52 tie rods and thus stay securely in place under a 9G load.
Boeing Service Related Problem (SRP) 777-25-0372 is related to this service bulletin.
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 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 5 of 29
ReferenceAffectedPlanning Data Paragraph 1.E., Compliance and Paragraph
1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesNoWeight 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 NoOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION Get access to the area above the A2 and A3 Galleys. Do a one-time general visual inspection of the A2 Galley T53 tie rod assembly and A3 Galley T52 tie rod assembly, to make sure that the hardware that connects to the tripod mount assembly to the T53 and T52 tie rods is installed. If the hardware is installed no more work is necessary. Install the hardware if it is not installed.
EFFECTIVITY 777-300ER Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s).
COMPLIANCE Boeing recommends that the inspection and corrective action given in this service bulletin be done within 12 months after the original issue date of this service bulletin.
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.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for 777 airplanes in warranty as of December 09, 2015. Please refer to Paragraph 2.B., Industry Support Information. The warranty remedies will expire eight years from the original issue date of this service bulletin.
Boeing warranty remedies are not available for the inspection given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 6 of 29 BOEING SERVICE BULLETIN 777-25A0677
ALERTALERT
BOEING SERVICE BULLETIN 777-25A0677
ALERT ALERT
MATERIAL INFORMATION None.
INSPECT THE A2 AND A3
GALLEY TRIPOD MOUNT ASSEMBLY AND T53 AND T52
TIE ROD FOR HARDWARE
INSTALLATION STA 2108 INBD LEFT SIDE SHOWN, RIGHT SIDE SIMILAR 2482890 (TYPICAL) Original Issue: April 25, 2016 Export Controlled ECCN: 9E991 - BOEING 777-25A0677 PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7 of 29
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 8 of 29 BOEING SERVICE BULLETIN 777-25A0677
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BLANK PAGE
Commercial Airplanes 777 Service Bulletin ALERT Number: 777-25A0677 Original Issue: April 25, 2016 ATA System: 2531 SUBJECT: EQUIPMENT FURNISHINGS - Galley - A2 and A3 Galley Hardware Installation Inspection
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index D624W001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is applicable to 777-300ER Airplanes listed below, in 1 Group. The Variable Number and Group Information for the applicable airplanes is given below. Line Number 1377 and on will have a caution note added to production airplanes.
DESCRIPTIONCONFIGURATIONGROUP 777-300ER Airplanes with A2 and A3 Galley hardware that may not be installed -1 Airplane Models:
777-300ER GroupVariable Number 1WD931 - WD933 1WE057 1WE315 - WE318 1WE341 - WE343 1WE400 - WE401 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 9 of 29
GroupVariable Number 1WE557 - WE565
2. Spares Affected None.
B. Concurrent Requirements None.
C. Reason Accomplishment of this service bulletin will make sure that the A2 and A3 Galleys are attached to the T53 and T52 tie rods, respectively, in the overhead support structure and thus prevent the galley from coming loose. If this service bulletin is not done, A2 and A3 galleys not connected to the tie rods may come loose under a 9G load posing a risk of serious injury to passengers and the impedance of escapement routes.
The hardware that attaches the T53 and T52 tie rods to the tripod mount assembly in the A2 and A3 Galleys was found unattached during a routine production inspection of line number 1357 and 1358 airplanes before delivery. The cause was determined to be a change to the galley installation sequence for the airplanes in the effectivity of this service bulletin to correct a galley door binding issue that was occurring in service. This changed installation sequence did not have a robust method to make sure that the tie rods were attached to the galley before delivery. Boeing has implemented a new improved process to make sure that the hardware that attaches the T53 and T52 tie rods to the tripod mount assembly in the A2 and A3 Galleys is attached. Boeing is not aware of any in-service damage to galley parts or surrounding parts due to uninstalled tie rod hardware. There are no known failures in service during normal flight loads. Therefore it is expected that the galley parts and surrounding parts can withstand normal flight loads if the hardware is missing from the tie rod.
This service bulletin gives instructions to do a one-time inspection of the A2 and A3 Galleys to make sure they are connected to the T53 and T52 tie rods and thus stay securely in place under a 9G load.
Boeing Service Related Problem (SRP) 777-25-0372 is related to this service bulletin.
D. Description Get access to the area above the A2 and A3 Galleys. Do a one-time general visual inspection of the A2 Galley T53 tie rod assembly and A3 Galley T52 tie rod assembly, to make sure that the hardware that connects to the tripod mount assembly to the T53 and T52 tie rods is installed. If the hardware is installed no more work is necessary. Install the hardware if it is not installed.
The work in this service bulletin is done in the maintenance zone(s) given below.
Affected Maintenance Zones ZoneModel 261, 262777-300ER Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 10 of 29 BOEING SERVICE BULLETIN 777-25A0677
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E. Compliance Boeing recommends that the inspection and corrective action(s) given in this service bulletin be done within 12 months after the original issue date of this service bulletin.
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.
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:
• 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 Elapsed HoursTask HoursNumber of PersonsTask
0.300.301Open Access
0.100.101FIGURE 1
0.100.101FIGURE 2
0.300.301Close Access
0.800.80TOTAL FOR EACH AIRPLANE NOTE: Data not given if fastener needs to be installed.
H. Weight and Balance Changes None.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 11 of 29 BOEING SERVICE BULLETIN 777-25A0677
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I. Electrical Load Data Not changed.
J. References
1. Existing Data:
a. Boeing Service Related Problem (SRP) 777-25-0372
b. Service Bulletin Index D624W001
c. Standard Overhaul Practices Manual (SOPM) 20-50-01
d. 777 Aircraft Maintenance Manual (AMM) 25-21-07, 25-31-03
2. Data Supplied with this Service Bulletin:
None.
3. Installation Drawings Used in the Preparation of this Service Bulletin:
None.
K. Publications Affected
1. Publications:
Chapter-SectionPublication 25-31777 Illustrated Parts Catalog
2. Damage Tolerance Based Structural Inspections:
Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary.
L. Interchangeability and Intermixability of Parts Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts.
M. Software Accomplishment Summary Not affected.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2016 777-25A0677 12 of 29 BOEING SERVICE BULLETIN 777-25A0677