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Commercial Airplanes 777 Service Bulletin ALERT Number: 777-55A0018 Original Issue: July 27, 2011 ATA System: 5510 SUBJECT: STABILIZERS - Horizontal Stabilizer - Pivot Pin - Inspection, Rework, and Replacement Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 730-774). 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BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2011 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.
This document includes proprietary information owned by The Boeing Company and/or one or more third parties.
Treatment of the document and the information it contains is governed by contract with Boeing. For more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.
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, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and the Boeing livery 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.
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4.0
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Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected ........................................ 1 3 B. Concurrent Requirements ...................................... 1 3 C. Reason ................................................ 1 3 D. Description .............................................. 1 4 E. Compliance .............................................. 1 4 F. Approval ............................................... 1 6 G. Manpower .............................................. 1 6 H. Weight and Balance Changes .................................... 1 7 I. Electrical Load Data ......................................... 1 7 J. References .............................................. 1 7
1. Existing Data .......................................... 1 7
2. Data supplied with this Service Bulletin ............................ 1 8
3. Installation Drawings Used in the Preparation of this Service Bulletin ............ 1 8 K. Publications Affected ........................................ 1 8 L. Interchangeability and Intermixability of Parts ........................... 1 8
2. MATERIAL INFORMATION ........................................ 1 9 A. Material - Price and Availability ................................... 1 9 B. Industry Support Information .................................... 1 9 C. Parts Necessary For Each Airplane ................................. 1 9
1. Kits/Parts ............................................ 1 9
2. Parts and Materials Supplied by the Operator ........................ 2 0
3. Parts Modified and Reidentified ................................ 2 0
4. Parts Removed and Not Replaced .............................. 2 1 D. Parts Necessary to Change Spares ................................. 2 1 E. Special Tooling - Price and Availability ............................... 2 1 F. Special Tooling Necessary to do this Service Bulletin ....................... 2 1
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 2 3 A. GENERAL INFORMATION ..................................... 2 3 B. WORK INSTRUCTIONS ....................................... 2 4 FIGURE 1: 182W6401-1 OUTER PIVOT PIN REWORK ......................... 3 1 FIGURE 2: 182W6401-2 OR 182W6401-301 INNER PIVOT PIN REWORK .............. 3 5 APPENDIX A: HORIZONTAL STABILIZER TEMPORARY PIVOT PIN FABRICATION/INSTALLATION . 37
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Commercial Airplanes 777 Service Bulletin ALERT SummaryNumber: 777-55A0018Original Issue: July 27, 2011 ATA System: 5510 SUBJECT: STABILIZERS - Horizontal Stabilizer - Pivot Pin - Inspection, Rework, and Replacement
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 This service bulletin gives instructions to replace the existing horizontal stabilizer pivot pins with new or reworked pivot pins that have improved resistance to corrosion. If the work given in this service bulletin is not done, horizontal stabilizer pivot pins with corrosion could eventually crack and fracture. A fractured horizontal stabilizer pivot pin may cause excessive horizontal stabilizer freeplay and structural damage significant enough to result in loss of control of the airplane.
The left and right horizontal stabilizer pivot joints each contain inner and outer pivot pins, along with spacers, washers, and retaining hardware. These parts join the horizontal stabilizer to the section 48 stabilizer support bulkhead at body station 2370.
Boeing has received several reports of horizontal stabilizer pivot pin corrosion damage on the outer diameter chrome surface. One operator sent a corroded pivot pin to Boeing for analysis. Upon close examination, Boeing found micro cracks in the chrome plating of the pivot pin. Some of the micro cracks extended into the base metal.
Accomplishment of this service bulletin will remove the micro-cracking process condition found in existing horizontal stabilizer pivot pins and ensure that the pins are free of corrosion damage that could result in pivot pin fracture.
Boeing Fleet Team Digest (FTD) article 777 FTD 55-10001 is related to this service bulletin.
Boeing Service Related Problem (SRP) 777-SRP-55-0049 is related to this service bulletin.
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ACTION (PRR 62777-78S) Remove the horizontal stabilizer inner and outer pivot pins. Install new pivot pins that have improved resistance to corrosion. Alternatively, rework and re-install the existing pivot pins or install spare pivot pins that have already been reworked in accordance with this service bulletin. After replacement, do detailed and ultrasonic inspections of the horizontal stabilizer pivot pins. Accomplish all actions in accordance with paragraph 1.E., Compliance.
EFFECTIVITY 777-200, 777-200LR, 777-300, 777-300ER, and 777F airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.
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.
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection and replacement procedures given in this service bulletin.
MANPOWER Elapsed HoursTotal Task HoursAirplanes
9.5038.00All airplanes.
MATERIAL INFORMATION Boeing Supplied Kits/Parts.
Refer to Paragraph 2.A., Material - Price and Availability.
Operator Supplied Materials.
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BOEING SERVICE BULLETIN 777-55A0018
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HORIZONTAL STABILIZER
REMOVE THE HORIZONTAL STABILIZER INNER AND OUTER PIVOT JOINT PIVOT PINS. INSTALL NEW PIVOT PINS THAT HAVE REWORK AND RE-INSTALL THE EXISTING PIVOT PINS OR IMPROVED RESISTANCE TO CORROSION. ALTERNATIVELY, RIGHT SIDE SIMILAR) (LEFT SIDE SHOWN
INSTALL SPARE PIVOT PINS THAT HAVE ALREADY BEEN
REWORKED IN ACCORDANCE WITH THIS SERVICE BULLETIN. DO AFTER REPLACEMENT INSPECTIONS OF THE HORIZONTAL STABILIZER PIVOT PINS. ACCOMPLISH ALL 2043045 ACTIONS IN ACCORDANCE WITH PARAGRAPH 1.E., COMPLIANCE.
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Commercial Airplanes 777 Service Bulletin ALERT Number: 777-55A0018 Original Issue: July 27, 2011 ATA System: 5510 SUBJECT: STABILIZERS - Horizontal Stabilizer - Pivot Pin - Inspection, Rework, and Replacement
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 Document D624W001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplane(s) shown below. An equivalent change is on subsequent production airplanes. Refer to PRR 62777-78S for data about this change.
DESCRIPTIONCONFIGURATIONGROUP 777-200 and 777-300 airplanes, line numbers 1 through 868.-1 777-200LR, 777-300ER, and 777F airplanes, line numbers 423 through 919.
-2 Airplane Models:
777-200, 777-200LR, 777-300, 777-300ER, 777F GroupVariable Number 1WA001 - WA017 1WA076 - WA080 1WA086 - WA093 1WA101 - WA104 1WA116 - WA119
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GroupVariable Number 1WA131 - WA137 1WA171 - WA175 1WA196 - WA198 1WA206 - WA212 1WA221 - WA223 1WA231 - WA232 1WA241 - WA250 1WA261 - WA266 1WA281 - WA283 1WA301 - WA304 1WB001 - WB021 1WB031 - WB046 1WB051 - WB088 1WB101 - WB106 1WB121 - WB125 1WB131 - WB148 1WB151 - WB155 1WB161 - WB177 1WB181 - WB194 1WB201 - WB215 1WB231 - WB247 1WB271 - WB273 1WB276 - WB286 1WB291 - WB302 1WB306 - WB307 1WB311 - WB337 1WB341 - WB342 1WB366 - WB368 1WB371 - WB388 1WB406 1WB411 - WB413 1WB416 - WB439 1WB446 - WB453
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GroupVariable Number 1WB476 1WB481 - WB484 1WB501 - WB512 1WB531 - WB537 1WB551 - WB554 1WB591 - WB597 1WB601 - WB606 1WB611 - WB622 1WB631 - WB638 1WB646 - WB649 1WC051 - WC073 1WC101 - WC104 1WC111 - WC120 1WC221 - WC224 1WC241 - WC243 1WC281 - WC290 1WC301 - WC308 1WC361 - WC364 1WC371 - WC374 1WC381 - WC395 1WC441 1WC446 - WC449 1WC456 - WC459 1WC486 - WC493 1WC506 - WC508 1WC521 - WC522 1WC531 - WC536 1WC546 - WC548 1WC556 1WC566 - WC567 1WC571 - WC574 1WC581 2WD001 - WD002
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GroupVariable Number 2WD011 - WD018 2WD031 - WD036 2WD046 - WD055 2WD066 - WD075 2WD081 - WD088 2WD091 2WD096 2WD101 - WD103 2WD501 - WD513 2WD521 - WD541 2WD546 - WD554 2WD561 - WD573 2WD581 - WD599 2WD606 - WD609 2WD621 - WD632 2WD651 - WD665 2WD671 - WD676 2WD691 - WD709 2WD741 - WD752 2WD761 - WD771 2WD786 - WD788 2WD796 - WD813 2WD826 - WD837 2WD846 - WD861 2WD871 - WD883 2WD911 - WD915 2WD921 - WD922 2WD936 - WD939 2WD946 - WD951 2WD966 - WD970 2WD981 - WD982 2WD986 - WD987 2WD996
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