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 = '83e238b49c5667b6a657c8a37fe114e5e6b50de0346ea65caef89f3b07250eb6' 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 = '83e238b49c5667b6a657c8a37fe114e5e6b50de0346ea65caef89f3b07250eb6' 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 747 Service Bulletin ALERT Number: 747-53A2305 Date: June 27, 1991 Revision 2: January 15, 2009 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Nose Wheel Well Aft Corner Skin Panel Inspection and Modification 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BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 1991 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 1 of 102
9.0
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 2 of 102 BOEING SERVICE BULLETIN 747-53A2305
ALERTALERT
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 ........................................ 2 2 B. Concurrent Requirements ...................................... 2 2 C. Reason ................................................ 2 2 D. Description .............................................. 2 3 E. Compliance .............................................. 2 5 F . Approval ............................................... 3 1 G. Manpower .............................................. 3 2 H. Weight and Balance Changes .................................... 3 4 I. Electrical Load Data ......................................... 3 4 J. References .............................................. 3 4
1. Existing Data: .......................................... 3 4
2. Data supplied with this Service Bulletin: ........................... 3 5
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 3 7 K. Publications Affected ......................................... 3 7 L. Interchangeability and Intermixability of Parts ........................... 3 7
2. MATERIAL INFORMATION ........................................ 3 9 A. Material - Price and Availability ................................... 3 9 B. Industry Support Information .................................... 3 9 C. Parts Necessary For Each Airplane ................................. 3 9
1. Kits/Parts: ............................................ 3 9
2. Parts and Materials Supplied by the Operator: ........................ 3 9
3. Parts Modified and Reidentified: ................................ 3 9
4. Parts Removed and Not Replaced: .............................. 4 0 D. Parts Necessary to Change Spares ................................. 4 0 E. Special Tooling - Price and Availability ............................... 4 0 F . Special Tooling Necessary to do this Service Bulletin ....................... 4 0
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 4 1 A. GENERAL INFORMATION ..................................... 4 1 B. WORK INSTRUCTIONS ....................................... 4 2 FIGURE 1: LOGIC DIAGRAM - GROUP 1 - 3 AIRPLANES NOT CHANGED AS GIVEN IN SERVICE BULLETIN 747-53-2150 OR SRM 53-30-03, FIGURE 35 (DELETED) ........... 4 8 FIGURE 2: LOGIC DIAGRAM - GROUP 1 - 3 AIRPLANES CHANGED/REPAIRED AS GIVEN IN SERVICE BULLETIN 747-53-2150 OR SRM 53-30-03, FIGURE 35 (DELETED) ........... 4 9 FIGURE 3: LOGIC DIAGRAM - GROUP 4 - 7 AIRPLANES (DELETED) ................. 5 0 FIGURE 4: INSPECTION - GROUP 1-3 AIRPLANES [Group 1-3] .................... 5 1 FIGURE 5: INSPECTION - GROUP 4-8 AIRPLANES [Group 4-8] .................... 5 5 FIGURE 6: MODIFICATION - GROUP 1 AIRPLANES [Group 1] ..................... 5 8 FIGURE 7: MODIFICATION - GROUP 2 AIRPLANES [Group 2] ..................... 6 1 FIGURE 8: MODIFICATION - GROUP 3 AIRPLANES [Group 3] ..................... 6 4 FIGURE 9: MODIFICATION - GROUP 4 AIRPLANES [Group 4] ..................... 6 7 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 3 of 102 BOEING SERVICE BULLETIN 747-53A2305
ALERTALERT
FIGURE 10: MODIFICATION - GROUP 5 AIRPLANES [Group 5] ..................... 7 0 FIGURE 11: MODIFICATION - GROUP 6 AIRPLANES [Group 6] ..................... 7 3 FIGURE 12: MODIFICATION - GROUP 7, 8 AIRPLANES [Group 7] ................... 7 6 FIGURE 13: POST -MODIFICATION INSPECTION - GROUP 1 AIRPLANES [Group 1] ......... 7 9 FIGURE 14: POST -MODIFICATION INSPECTION - GROUP 2 AIRPLANES [Group 2] ......... 8 2 FIGURE 15: POST -MODIFICATION INSPECTION - GROUP 3 AIRPLANES [Group 3] ......... 8 5 FIGURE 16: POST -MODIFICATION INSPECTION - GROUP 4 AIRPLANES [Group 4] ......... 8 8 FIGURE 17: POST -MODIFICATION INSPECTION - GROUP 5 AIRPLANES [Group 5] ......... 9 1 FIGURE 18: POST -MODIFICATION INSPECTION - GROUP 6 AIRPLANES [Group 6] ......... 9 4 FIGURE 19: POST -MODIFICATION INSPECTION - GROUP 7, 8 AIRPLANES [Group 7-8] ....... 9 7 FIGURE 20: BS 400 BULKHEAD OUTER CHORD INSPECTION .................... 1 0 0 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 4 of 102 BOEING SERVICE BULLETIN 747-53A2305
ALERTALERT
Commercial Airplane Group 747 Service Bulletin ALERT Revision Transmittal SheetNumber: 747-53A2305Date: June 27, 1991 Revision 2: January 15, 2009 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Nose Wheel Well Aft Corner Skin Panel Inspection and Modification This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION More work is necessary on airplanes changed as shown in the initial release or revision 1 of this service bulletin as follows:
Group 1-3 airplanes: add post-modification inspections and add inspections of the BS 400 bulkhead outer chord.
Group 4-7 airplanes: add steel doublers to modification, add post-modification inspections and add inspections of the BS 400 bulkhead outer chord.
Line number 686 and subsequent airplanes were added to the service bulletin effectivity as group 8 airplanes.
The effectivity of this service bulletin now includes future airplanes. With this revision, some airplanes were moved from group 5 to group 4.
REASON FOR REVISION This revision is sent to give added inspections (all airplanes) and added modification work (group 4-7 airplanes), and to extend the effectivity of the service bulletin to include all 747 airplanes.
After the release of revision 1 of this service bulletin, skin cracks were found at both aft corners of the nose wheel well on two 747 airplanes that were built after line number 685. Based on these findings, the inspections, repair and modification given in this service bulletin have been made applicable to 747 airplanes built after line number 685 and changes have been made to the modification for group 4-7 airplanes (steel doublers added).
Also, for all airplanes, instruction to do post-modification inspections has been added.
Also, subsequent to the previous release of this service bulletin, small cracks have been found in the outer chord of the BS 400 bulkhead on airplanes with less than 20,000 flight-cycles. Based on these findings, instruction to do inspection of the outer chord has been added to this service bulletin.These inspections replace existing SSID F-4 inspections.
All sections of this service bulletin were changed with this revision.
Paragraph I.A., Effectivity, shows changes of airplane operators. Each operator should examine the Effectivity paragraph for changes.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 5 of 102
Vertical lines are put on the left edge of each page, except in Paragraph I.A., Effectivity, to show the location of important changes.
Pages with no vertical lines have no important changes.
REVISION HISTORY June 27, 1991Original Issue:
May 22, 1997Revision 1:
January 15, 2009Revision 2:
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 6 of 102 BOEING SERVICE BULLETIN 747-53A2305
ALERTALERT
Commercial Airplane Group 747 Service Bulletin ALERT SummaryNumber: 747-53A2305Date: June 27, 1991 Revision 2: January 15, 2009 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Nose Wheel Well Aft Corner Skin Panel Inspection and Modification
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 inspection and doubler installation will make sure that there are no unrepaired cracks in the aft corner of the nose wheel well. These cracks occur in the fuselage skin and skin splice plate at Body Station (BS) 400 near Stringer (STR) 44, left and right side.
Service Bulletin 747-53-2150, "Nose Wheel Well Aft Bulkhead External Doubler Installation" told operators of cracks in the skin splice plate for airplane line numbers 1-314. Operators were told to stop drill any cracks in the skin splice plate and to install two external doublers. A thicker skin splice plate was provided in production for airplane line numbers 315 and on.
Subsequently, two operators told Boeing of two incidents of cracks in the fuselage skin. These cracks occurred forward of BS 400 at STR 44 near the external repair doublers for the skin splice plate. The cracks were found on airplanes with 10,539 and 15,178 flight-cycles. These airplanes had been changed as shown in Service Bulletin 747-53-2150 or by means of the Structural Repair Manual 53-30-03, Figure 35.
After line number 685, airplanes were delivered with an improved internal skin doubler and fit-up of the structure was improved.
After the release of revision 1 to this service bulletin, skin cracks were found at both aft corners of the nose wheel well on two 747 airplanes built after line number 685. Based on these findings, instruction to do post-modification inspections were added to this service bulletin and the effectivity was extended to include airplanes built after line number 685. Also, subsequent to the release of revision 1 to this service bulletin, small cracks were found in the outer chord of the BS 400 bulkhead on airplanes with less than 20,000 flight-cycles.
As a result of these findings, instruction to do inspections of the bulkhead outer chord are included this service bulletin. These outer chord inspections replace SSID F-4 inspections.
This item is identified in Boeing Structural Item Interim Advisory (SIIA) 747-48 and 747-87.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 7 of 102
ACTION (PRR 85901-84RS) For all airplanes, a Detailed inspection for cracks in the skin at/around the aft corners of the nose wheel well is to be done. On specified airplanes, a Detailed inspection for cracks in the skin splice plate at the aft corners of the nose wheel well is also to be done. If a crack in the skin or the skin splice plate is found, the modification and the post-modification inspections given in this service bulletin are to be done. If no cracks are found, repeat Detailed inspections are to be done, or alternatively, the modification and the post-modification inspections given in this service bulletin can be done. Also, for all airplanes, a surface HFEC inspection of the bulkhead outer chord is to be done. If a crack is found, the chord is to be repaired as given in this service bulletin.
EFFECTIVITY All 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F , 747-300, 747-400, 747-400D, 747-400F , 747SP , 747SR series airplanes. Refer to Paragraph 1.A.1., Airplanes for the list of affected airplanes.
COMPLIANCE Refer to Paragraph 1.E., Compliance.
Federal Aviation Administration (FAA) Airworthiness Directives 86-09-07, 94-12-04, 94-17-01, 2004-07-22 R1, and 2006-22-09 are related to this service bulletin.
INDUSTRY SUPPORT INFORMATION This service bulletin was first released before October of 1994. Thus industry support for affected airplanes depends upon whether you ever filed a warranty claim with Boeing on this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION Refer to Paragraph 2.A., Material - Price and Availability.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 8 of 102 BOEING SERVICE BULLETIN 747-53A2305
ALERTALERT
BOEING SERVICE BULLETIN 747-53A2305
ALERT ALERT S-44 STA + + + +j 380 71 SEE ¡+| +
SKIN SPLICE INSPECT SKIN, SPLICE PLATE, FRAME + PLATE
CHORD AND RADIUS FILLER IN THE AFT
CORNER OF THE NOSE WHEEL WELL INSTALL SPLICE
PLATE DOUBLERS
BULKHEAD
CHORD DRAIN
• HOLE 777+++ STA 400 ++ + + + + + +
INSTALL SKIN MODIFICATION
DOUBLERS FWD LEFT SIDE SHOWN INBD 746682
RIGHT SIDE OPPOSITE June 27, 1991 Revision 2: January 15, 2009 747-53A2305 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 102
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 10 of 102 BOEING SERVICE BULLETIN 747-53A2305
ALERTALERT
BLANK PAGE
Commercial Airplane Group 747 Service Bulletin ALERT Number: 747-53A2305 Date: June 27, 1991 Revision 2: January 15, 2009 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Nose Wheel Well Aft Corner Skin Panel Inspection and Modification
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 D6-30300, Part 3 for Airplane Variable Number, Line Number, and Serial Number data.This service bulletin is for the airplanes referred to in PRR82284R.
NOTE: 747-8 and 747-8F series airplanes are not affected by this service bulletin.
NOTE: This Service Bulletin is for the airplanes identified below. The Effectivity list shown below is complete for airplanes through line number 1419. Airplanes after line number 1419 are also affected by this service bulletin, and are in Group(s): 8
DESCRIPTIONCONFIGURATIONGROUP Airplanes with line numbers 1-26 (modification installation 141U1099-1/-2 (LS/RS) applicable) -1 747-100 airplanes with line numbers 27-314 (modification installation 141U1099-3/-4 (LS/RS) applicable) -2 747-200 airplanes with line numbers 27-314 (modification installation 141U1099-5/-6 (LS/RS) applicable) -3 747-100 airplanes with line numbers 315-579 (modification installation 141U1099-43/-44 (LS/RS) applicable) -4 747-200,-300 airplanes with line numbers 315-579 (modification installation 141U1099-45/-46 (LS/RS) applicable) -5 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 11 of 102
DESCRIPTIONCONFIGURATIONGROUP 747-100 airplanes with line numbers 580-685 (modification installation 141U1099-49/-50 (LS/RS) applicable) -6 747-200,-300 airplanes with line numbers 580-685 (modification installation 141U1099-51/-52 (LS/RS) applicable) -7 Airplanes built after line number 685 (modification installation 141U1099-51/-52 (LS/RS) applicable -8 Airplane Models:
747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F , 747-300, 747-400, 747-400D, 747-400F , 747SP , 747SR GroupVariable Number 1RA001 - RA017 2RA018 - RA034 1RA101 - RA105 2RA106 - RA115 2RA161 - RA164 1RA201 2RA202 - RA203 3RA216 - RA217 3RA245 - RA246 1RA251 - RA252 2RA253 - RA266 1RA301 2RA302 - RA318 2RA351 - RA360 3RA369 - RA373 2RA401 - RA418 2RA501 - RA502 2RA521 - RA528 3RA532 - RA543 5RA544 - RA548 2RA551 - RA552 3RA559 - RA561 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
June 27, 1991 747-53A2305Revision 2: January 15, 2009 12 of 102 BOEING SERVICE BULLETIN 747-53A2305