TextPartly OCR
Some pages are OCR from a scan. OCR can misread letters and numbers.
Query with SQL
duckdb -csv -c "SELECT p.page, p.text_source, p.text, f.rights_holder, f.license FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256) WHERE p.file_sha256 = '421c6d7491e6f2a205f0c3c05338b0d3c9b8e3b8d1bb4b27df4dfa00c074139f' ORDER BY p.page"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT p.page, p.text_source, p.text, f.rights_holder, f.license FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256) WHERE p.file_sha256 = '421c6d7491e6f2a205f0c3c05338b0d3c9b8e3b8d1bb4b27df4dfa00c074139f' ORDER BY p.page
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Commercial Airplane Group 777 Service Bulletin Number: 777-27A0059 Date: September 18, 2003 Revision 2: January 15, 2009 ATA System: 2741 SUBJECT: FLIGHT CONTROLS - Horizontal Stabilizer,Trim Actuator, Ballscrew Maintenance and Lubrication Interval Change, and Freeplay Inspection Addition 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BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2003 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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, 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.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 1 of 37
6.0
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 2 of 37 BOEING SERVICE BULLETIN 777-27A0059
BLANK PAGE
Table of Contents
Revision Transmittal Sheet5
Summary7
1. PLANNING INFORMATION ........................................ 1 1 A. Effectivity ............................................... 1 1
1. Airplanes ............................................ 1 1
2. Spares Affected ........................................ 1 4 B. Concurrent Requirements ...................................... 1 4 C. Reason ................................................ 1 4 D. Description .............................................. 1 5 E. Compliance .............................................. 1 6 F . Approval ............................................... 1 7 G. Manpower .............................................. 1 8 H. Weight and Balance Changes .................................... 1 8 I. Electrical Load Data ......................................... 1 8 J. References .............................................. 1 9
1. Existing Data: .......................................... 1 9
2. Data supplied with this Service Bulletin: ........................... 1 9
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 1 9 K. Publications Affected ......................................... 1 9 L. Interchangeability and Intermixability of Parts ........................... 1 9
2. MATERIAL INFORMATION ........................................ 2 1 A. Material - Price and Availability ................................... 2 1 B. Industry Support Information .................................... 2 1 C. Parts Necessary For Each Airplane ................................. 2 1
1. Kits/Parts: ............................................ 2 1
2. Parts and Materials Supplied by the Operator: ........................ 2 1
3. Parts Modified and Reidentified: ................................ 2 1
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 2
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 2 3 A. GENERAL INFORMATION ..................................... 2 3 B. WORK INSTRUCTIONS ....................................... 2 4 FIGURE 1: (THIS FIGURE IS DELETED) ................................. 2 6 FIGURE 2: HORIZONTAL STABILIZER TRIM ACTUATOR - BALLSCREW AND BALLNUT DETAILED INSPECTION .......................................... 2 7 Appendix A: HORIZONTAL STABILIZER TRIM ACTUATOR - BALLSCREW-TO-BALLNUT FREEPLAY INSPECTION .......................................... 2 9 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 3 of 37 BOEING SERVICE BULLETIN 777-27A0059
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 4 of 37 BOEING SERVICE BULLETIN 777-27A0059
BLANK PAGE
Commercial Airplane Group 777 Service Bulletin Revision Transmittal SheetNumber: 777-27A0059Date: September 18, 2003 Revision 2: January 15, 2009 ATA System: 2741 SUBJECT: FLIGHT CONTROLS - Horizontal Stabilizer,Trim Actuator, Ballscrew Maintenance and Lubrication Interval Change, and Freeplay Inspection Addition This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Airworthiness Directive FAA AD 2007-17-12 is related to this service bulletin.
No more work is necessary on airplanes inspected or lubricated as shown in the Revision 1 of this service bulletin. Continue to accomplish the lubrication and the inspections in accordance with the intervals given in Paragraph 1.E., Compliance.
REASON FOR REVISION This revision is sent to specify the horizontal stabilizer freeplay test equipment, J55002-37, as the correct tool to accomplish the Ballscrew-to-Ballnut Freeplay Inspection. Although the inspection can be accomplished correctly as specified in Revision 1, it is possible that too much force will be applied to the structure. The J55002-37 equipment has a force scale to monitor the force applied to the horizontal stabilizer during the inspection. Also, a better description is needed to better explain the extent of action necessary to restore a removed unit.
These sections were changed:
1. Paragraph 1.D., Description: The request to send data to Boeing is deleted. The affected maintenance zones are added.
2. Paragraph 1.E., Compliance: A reference to FAA AD 2007-17-12 is added. The recommended intervals are deleted, leaving only the maximum intervals. A note is added to explain that when you replace a horizontal stabilizer actuator with a unit that is in a known serviceable condition, this action meets the intent of one detailed inspection, one freeplay inspection,and one lubrication of the stabilizer ballscrew. Notes are added to help identify the 777 MPD task that is satisfied by the accomplishment of each task in this service bulletin.
The table is simplified to eliminate redundant logic.
3. Paragraph 1.F ., Approval: A paragraph is added to explain that this service bulletin is an Alternative Method of Compliance (AMOC) to FAA AD 2007-17-12.
4. Paragraph 2.E., Special Tooling - Price and Availability: The tool kit number is changed. Also, the rental and purchase data is updated. The data about alternative tools are removed.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 5 of 37
5. Paragraph 1.K., Publications Affected:The 777 Maintenance Manual and 777 Maintendance Planning Data are given as affected publications.
6. Paragraph 2.A., Material - Price and Availability: An unnecessary reference to paragraph 2.C. was was removed.
7. Paragraph 2.C.2., Parts and Materials Supplied by the Operator: An unnecessary reference to paragraph
2.F . was removed.
8. Paragraph 2.E., Special Tooling - Price and Availability: The tool kit number and the rental data is changed.
9. Paragraph 2.F ., Special Tooling Necessary to do this Service Bulletin: The tool kit number and the price data is changed.
10. Paragraph 3.A., General Information: A note is added that explains how to identify replacement horizontal stabilizer trim actuators that are in a known serviceable condition.
11. Paragraph 3.B., Work Instructions: In parts 1 and 2, the step that gives requirements for inspections if you replace a worn or damaged actuator is changed to require the inspections only if you install a unit that is not in a known serviceable condition.
12. Paragraph 3.B., Work Instructions: The lubrication step is clarified to make sure that the ballnut is given as an item to lubricate. A step is added in Part 3, similar to Parts 1 and 2. This step requires that the detailed inspection and freeplay inspection be accomplished if you remove a worn or damaged actuator and install a unit that is not in a known serviceable condition.
13. FIGURE 2: Step 2 is deleted. This step was redundant to the AMM procedure referenced in step 1 and to note (a). Note (a), the instruction to remove and replace the unit is replaced with a statement that the condition must be corrected.
14. APPENDIX A:The instructions to accomplish the Ballscrew-to-Ballnut Freeplay Inspection for the Horizontal Stabilizer Trim Actuator are changed to require the tool kit J55002-37. The torque specification is removed.
A force specification is added. The illustrations are changed to show the tool J55002-37. An unnecessary note is deleted. The step to overhaul a horizontal stabilizer trim actuator assembly that is removed because it is found to be worn is deleted.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location of important changes.
Pages with no vertical lines have no important changes.
REVISION HISTORY September 18, 2003Original Issue:
August 18, 2005Revision 1:
January 15, 2009Revision 2:
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 6 of 37 BOEING SERVICE BULLETIN 777-27A0059
Commercial Airplane Group 777 Service Bulletin SummaryNumber: 777-27A0059Date: September 18, 2003 Revision 2: January 15, 2009 ATA System: 2741 SUBJECT: FLIGHT CONTROLS - Horizontal Stabilizer,Trim Actuator, Ballscrew Maintenance and Lubrication Interval Change, and Freeplay Inspection Addition
CONCURRENT REQUIREMENTS None.
BACKGROUND Accomplishment of this service bulletin will help to decrease the probability that the horizontal stabilizer actuator will become worn prematurely. This actuator controls the position of the horizontal stabilizer. It is possible that the flight crew cannot safely control the airplane if the actuator ballnut and ballscrew become worn sufficiently to disengage (although this is very unlikely to occur).
An investigation found that an MD-80 accident was caused by a prematurely worn horizontal stabilizer actuator.
Also, one 757 airplane was found to have an actuator with severe corrosion. The 777 has no reports of similar conditions. Because the 777 actuator has similar configuration to the 757 actuator, Boeing did a safety analysis of the 777 actuator. This analysis found no safety problems with the configuration of the 777 actuator. But the analysis did show that changes to the maintenance procedures and interval can make the actuator more reliable.
This service bulletin gives three scheduled maintenance procedures necessary to keep the 777 actuator in a serviceable condition. Each of the three procedures can be done independently. No airplane configuration changes are necessary.
Boeing Service Related Problem (SRP) 777-SRP-27-0153 is related to this service bulletin.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 7 of 37
ACTION
1. DETAILED INSPECTION: Do a detailed inspection for metal particles or corrosion products in the grease on the actuator ballnut and ballscrew. Clean the actuator ballscrew. Inspect the actuator ballnut for damage, cracks, corrosion, and obvious wear. Inspect the ballscrew for thread distortion, metal flaking, cross-threading, and stripping. Inspect the ballscrew for corrosion. If corrosion is found, evaluate the extent of the corrosion.
Inspect for lifted or damaged ballnut return tubes. Inspect the external areas of the actuator, and the areas below the actuator for loose ball bearings. Move the horizontal stabilizer to a different setting. Repeat the inspections for the newly exposed area of the ballscrew. Replace the actuator before further flight if one or more of these conditions are found. Lubricate the actuator ballnut and ballscrew. Repeat the Detailed Inspection at the interval given in Paragraph 1.E., Compliance.
2. BALLSCREW-TO-BALLNUT FREEPLAY INSPECTION: Measure the freeplay between the actuator ballnut and ballscrew. Replace the actuator if the freeplay is found to be more than the specified limit. Lubricate the actuator ballnut and ballscrew. Repeat the stabilizer ballscrew-to-ballnut freeplay inspection at the interval given in Paragraph 1.E., Compliance.
3. BALLNUT AND BALLSCREW LUBRICATION: Lubricate the actuator ballnut and ballscrew. Repeat the lubrication at the interval given in Paragraph 1.E., Compliance.
NOTE: If you replace the actuator with unit that is not in a known serviceable condition, then you must do the Detailed Inspection and the Ballscrew-to-Ballnut Freeplay Inspection of the replacement unit as given in this service bulletin before further flight. Refer to Paragraph 3.A., General Information for the applicable known serviceable conditions.
EFFECTIVITY All 777 airplanes.
COMPLIANCE Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes, inspection, and/or repair procedures given in this service bulletin.
MANPOWER Elapsed HoursTotal Task Hours
5.07.5
MATERIAL INFORMATION Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 8 of 37 BOEING SERVICE BULLETIN 777-27A0059
BOEING SERVICE BULLETIN 777-27A0059
• SEE A
1. CHANGE STABILIZER BALLSCREW
LUBRICATION INTERVAL
2. ADD STABILIZER BALLSCREW
FREEPLAY INSPECTION
3. ADD DETAILED INSPECTION AT
MORE FREQUENT INTERVALS
SERVICE ACCESS DOOR, 311BL FWD < W01314 September 18, 2003 Revision 2: January 15, 2009 777-27A0059 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 37
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 10 of 37 BOEING SERVICE BULLETIN 777-27A0059
BLANK PAGE
Commercial Airplane Group 777 Service Bulletin Number: 777-27A0059 Date: September 18, 2003 Revision 2: January 15, 2009 ATA System: 2741 SUBJECT: FLIGHT CONTROLS - Horizontal Stabilizer,Trim Actuator, Ballscrew Maintenance and Lubrication Interval Change, and Freeplay Inspection Addition
1. PLANNING INFORMATION A. Effectivity
1. Airplanes This service bulletin is for the airplanes shown below.
Refer to Service Bulletin Index Document D624W001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
NOTE: This Service Bulletin is for the airplanes identified below. The Effectivity list shown below is complete for airplanes through line number 790. Airplanes after line number 790 are also affected by this service bulletin, and are in Group(s): 1
DESCRIPTIONCONFIGURATIONGROUP Group 1 applies to all 777 airplanes-1 Airplane Models:
777-200, 777-200LR, 777-300, 777-300ER GroupVariable Number 1WA001 - WA017 1WA076 - WA080 1WA086 - WA093 1WA101 - WA104 1WA116 - WA119 1WA131 - WA137 1WA171 - WA175 1WA196 - WA198 1WA206 - WA212 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 11 of 37
GroupVariable Number 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 1WB476 1WB481 - WB484 1WB501 - WB512 1WB531 - WB537 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
September 18, 2003 777-27A0059Revision 2: January 15, 2009 12 of 37 BOEING SERVICE BULLETIN 777-27A0059