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 = 'c35a6ac77516eddcd2367d1f36288a26be399e09d87967a163057f945cdc41a5' 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 = 'c35a6ac77516eddcd2367d1f36288a26be399e09d87967a163057f945cdc41a5' 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 Airplanes 747 Service Bulletin Number: 747-53A2465 Original Issue: April 05, 2001 Revision 5: July 11, 2013 ATA System: 5311 SUBJECT: FUSELAGE - Main Frame - Nose Wheel Well Side Panel and Top Panel - Web and Stiffener 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 © 2001 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Unpublished Work.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 05, 2001 747-53A2465Revision 5: July 11, 2013 1 of 51
4.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 2 of 51 BOEING SERVICE BULLETIN 747-53A2465
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 0 B. Concurrent Requirements ...................................... 2 0 C. Reason ................................................ 2 0 D. Description .............................................. 2 2 E. Compliance .............................................. 2 3 F. Approval ............................................... 2 5 G. Manpower .............................................. 2 5 H. Weight and Balance Changes .................................... 2 6 I. Electrical Load Data ......................................... 2 6 J. References .............................................. 2 6
1. Existing Data: ......................................... 2 6
2. Data Supplied with this Service Bulletin: ........................... 2 7
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 7 K. Publications Affected ........................................ 2 7 L. Interchangeability and Intermixability of Parts ........................... 2 8 M. Software Accomplishment Summary ................................ 2 8
2. MATERIAL INFORMATION ........................................ 2 9 A. Material - Price and Availability ................................... 2 9 B. Industry Support Information .................................... 2 9 C. Parts Necessary for Each Airplane ................................. 2 9
1. Kits/Parts: ........................................... 2 9
2. Parts and Materials Supplied by the Operator: ........................ 2 9
3. Parts Modified and Reidentified: ............................... 2 9
4. Parts Removed and Not Replaced: .............................. 2 9 D. Parts Necessary to Change Spares ................................. 2 9 E. Special Tooling - Price and Availability ............................... 2 9 F. Special Tooling Necessary to do this Service Bulletin ....................... 2 9
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 3 1 A. GENERAL INFORMATION ..................................... 3 1 B. WORK INSTRUCTIONS ....................................... 3 2 FIGURE 1: INSPECTION OF AREA 1 - ALL AIRPLANES ........................ 3 5 FIGURE 2: INSPECTION OF AREA 2 [Group 1] ............................. 3 8 FIGURE 3: INSPECTION OF AREA 2 [Group 2] ............................. 4 2 FIGURE 4: INSPECTION OF AREA 3 - ALL AIRPLANES ........................ 4 5 FIGURE 5: SECONDARY INSPECTION OF SIDE PANEL VERTICAL BEAMS AND HORIZONTAL STIFFENERS - ALL AIRPLANES ............................... 4 8 FIGURE 6: SECONDARY INSPECTION OF LONGITUDINAL STIFFENERS, FLOOR BEAM LOWER CHORDS, FLOOR BEAM WEBS, AND VERTICAL BEAM UPPER ENDS [Group 1] . . . 50 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 3 of 51 BOEING SERVICE BULLETIN 747-53A2465
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 4 of 51 BOEING SERVICE BULLETIN 747-53A2465
BLANK PAGE
Commercial Airplanes 747 Service Bulletin Revision Transmittal SheetNumber: 747-53A2465Original Issue: April 05, 2001 Revision 5: July 11, 2013 ATA System: 5311 SUBJECT: FUSELAGE - Main Frame - Nose Wheel Well Side Panel and Top Panel - Web and Stiffener Inspection This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION More work is necessary on the airplanes inspected in accordance with the original issue or Revision 1 of this service bulletin. Revision 2 changed inspection requirements and compliance times.
More work may be necessary on the airplanes inspected in accordance with the Revision 2 of this service bulletin.
Revision 3 changed the initial compliance threshold for airplanes with 19,000 or more total flight cycles.
More work may be necessary on the airplanes inspected in accordance with the Revision 3 of this service bulletin.
Revision 4 changed the inspection methods and repeat inspection intervals for airplanes with 20,000 flight cycles or more.
No more work is necessary on airplanes inspected in accordance with the Revision 4 of this service bulletin.
However, this revision reduces the initial threshold for inspection of the nose wheel well sidewall panel webs and top panel web.
Federal Aviation Administration (FAA) Airworthiness Directive AD 2006-22-15 is related to this service bulletin.
The Federal Aviation Administration (FAA) will possibly release an additional Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the revised compliance tasks and times given in this service bulletin mandatory.
REASON FOR REVISION This revision is sent to reduce the initial threshold for inspection of the nose wheel well sidewall panel webs and top panel web, and to clarify inspection requirements in Figures 1, 2, and 3.
These sections were changed:
1. In Summary: Added service history information since Revision 4. Added reference to Service Related Problem 747-SRP-53-0408 and related Fleet Team Digest articles. Also, added Planning Data table and reference to AD 2006-22-15.
2. In paragraph 1.C., Reason: Added service history information since Revision 4. Added reference to Service Related Problem 747-SRP-53-0408 and related Fleet Team Digest articles.
3. In paragraph 1.D., Description: Added "no more work" statement for Revision 5.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 5 of 51
4. In paragraph 1.E., Compliance: Tables identified as "Table 1" and "Table 2" in previous revisions of this service bulletin have been re-identified as "Table 2" and "Table 3", respectively. A new Table identified as "Table 1" has been added for inspection of the nose wheel well sidewall panel webs and top panel web at a reduced initial inspection threshold. Also, added reference to related AD 2006-22-15, and revised compliance Table 2 and Table 3 to reflect the compliance times specified in AD 2006-22-15.
5. In paragraph 1.F., Approval: Updated approval statement and added Alternative Method of Compliance statement for AD 2006-22-15.
6. In paragraph 1.K., Publications Affected: Added damage tolerance inspection statement.
7. In paragraph 3.A., General Information: Updated general notes.
8. In paragraph 3.B., Work Instructions: Updated SRM references.
9. In Figure 1: Added sentence to footnote (b) related to UT inspection information, that was previously in footnote (a). Figure 1 inspection requirements have not changed.
10. In Figure 2: Added cross sections B-B and C-C. Clarified side panel web detailed inspection.
11. In Figure 3: Added cross section B-B, and clarified side panel web detailed inspection.
12. In Figure 4: Added footnotes (a), (b), (c), and (d) to clarify inspection requirements.
13. Throughout the service bulletin, the words "as shown in" or "shown in" have been changed to "as given in" or "given in" when referring to procedures or bulletin sections that must be used. The words "as shown in" have been changed to "refer to" when referring to maintenance manual procedures. Vertical lines have not been put on the left edge of the pages where these changes were made.
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 April 05, 2001Original Issue:
October 16, 2003Revision 1:
November 11, 2004Revision 2:
December 23, 2004Revision 3:
February 24, 2005Revision 4:
July 11, 2013Revision 5:
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 6 of 51 BOEING SERVICE BULLETIN 747-53A2465
Commercial Airplanes 747 Service Bulletin SummaryNumber: 747-53A2465Original Issue: April 05, 2001 Revision 5: July 11, 2013 ATA System: 5311 SUBJECT: FUSELAGE - Main Frame - Nose Wheel Well Side Panel and Top Panel - Web and Stiffener Inspection
CONCURRENT REQUIREMENTS None
BACKGROUND Accomplishment of the inspections shown in this service bulletin will ensure the structural integrity of the nose wheel well top panel and side panels. Cracks in the top panel or side panel webs and stiffeners that are not found and repaired could become large and cause in flight depressurization and loss of structural integrity.
Three operators have told Boeing about nose wheel well side panel web cracks that were found on four airplanes with 15,900 - 32,018 flight cycles. The cracks that were found were 1.5 inch to 14.5 inch long. In addition, a 17.5 inch long crack was found in the side panel web on Boeing's 747-400 Fatigue Test airplane at 58,890 pressure cycles.
One operator has also reported a 13 inch long nose wheel well top panel web crack on one airplane. This airplane had flown 15,726 total flight cycles.
Two operators have also reported nose wheel well side panel horizontal stiffener cracks on two airplanes. On one airplane with 19,577 flight cycles, a 12 inch long stiffener crack was found. On the other airplane with 31,863 flight cycles, 9 inch and 13 inch long stiffener cracks were found.
Revision 2: After the initial release of this service bulletin, two operators have told Boeing that large sidewall panel web cracks (up to 12 inches long) were found during visual inspection on two airplanes. On one airplane, a 12 inch long side panel crack was found 1,178 flight cycles after the ultrasonic inspections shown in the initial release and Revision 1 of this service bulletin was accomplished. On the other airplane, multiple side panel cracks (up to 8.8 inches long) were found approximately 3,500 flight cycles after the ultrasonic inspection was accomplished.
Revision 3: After Revision 2 of this service bulletin, an operator reported an in flight decompression of an airplane with 27,241 flight cycles. Upon inspection, the nose wheel well right hand side panel web was torn open between STA 260 and STA 280, and from WL 160 to WL 170. The airplane landed safely, however, the decompression resulted in deployment of the oxygen masks and a decision by the crew to conduct an air turn back. In addition, the decompression caused damage to the Nose Landing Gear doors and adjacent structure.
Since Revision 4 of this service bulletin, Boeing has received six additional reports of cracks in the nose wheel well side panels and/or side panel stiffeners. Two of the reports were on airplanes with 17,320 and 21,623 flight cycles. The other four reports were on airplanes with between 13,541 and 13,828 flight cycles.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 7 of 51
Boeing has determined that all the reported nose wheel well cracks were caused by fatigue. Furthermore, the nose wheel well top and side panels have been determined to be structure that could develop Widespread Fatigue Damage (WFD). For more information about WFD, refer to 747-SL-53-088.
Service history and Boeing analysis show that fatigue cracking in the NWW top and side panels before 16,000 total flight cycles will be confined to a single bay between web stiffeners. Boeing has determined that cracking in a single stiffener bay is not an airplane safety concern. However, beyond 16,000 total flight cycles, WFD could result in cracking across multiple stiffener bays and a depressurization event significant enough to affect the structural integrity of the fuselage.
In order to detect and repair possible cracking, and prevent a possible depressurization event, Boeing recommends that operators accomplish the inspections given in this service bulletin. Due to the possibility that the Federal Aviation Administration (FAA) will issue a new Airworthiness Directive to address cracking before 16,000 total flight cycles, the initial threshold for inspection of the nose wheel well sidewall panel webs and top panel web is being reduced to 13,000 total flight cycles.
Boeing Structural Item Interim Advisory SIIA 747-129 is related to this service bulletin.
Boeing Service Related Problems (SRP) 747-SRP-53-0133, 747-SRP-53-0231, and 747-SRP-53-0408 are related to this service bulletin.
Boeing Fleet Team Digest (FTD) articles 747 FTD 53-12006 and 747 FTD 53-04002 are 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 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 AffectedNoPublications 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 Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 8 of 51 BOEING SERVICE BULLETIN 747-53A2465
ACTION AREA 1 - Sidewall Panel Web at WL 150, WL 160, and WL 170: Open the Nose Landing Gear doors. Do a detailed inspection (and a UT inspection, if over 20,000 total flight cycles) of the Nose Wheel Well side panel for cracks. If no cracks are found, put the airplane back in serviceable condition. If cracks are found, repair before any more flights. Repair web cracks as given in the Structural Repair Manual or ask Boeing for repair data.
AREA 2 - Sidewall Panel Web at WL 140 and WL 180 and Top Panel Web: Open the Nose Landing Gear doors.
Do a detailed inspection (and a UT inspection, if over 20,000 total flight cycles) of the Nose Wheel Well side panel and top panel webs for cracks. If no cracks are found, put the airplane back in serviceable condition. If cracks are found, repair before any more flights. Repair web cracks as given in the Structural Repair Manual or ask Boeing for repair data.
AREA 3 - Sidewall Panel and Top Panel Stiffeners: Get internal access to the Nose Wheel Well side panels and top panel. Do detailed and surface High Frequency Eddy Current (HFEC) inspections of the longitudinal stiffeners for cracks. If no cracks are found, put the airplane back in serviceable condition. If cracks are found, repair before any more flights. Replace cracked stiffeners, or ask Boeing for repair data.
Do the AREA 1, AREA 2, and AREA 3 inspections again at the times given in this service bulletin.
EFFECTIVITY All 747-100/-100B/-100B SUD/-200B/-200C/-200F/-300/-400/-400D/-400F/-SP/-SR airplanes. Refer to Paragraph
1.A.1., Airplanes, for the list of affected airplanes.
COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directive AD 2006-22-15 is related to this service bulletin.
The Federal Aviation Administration (FAA) will possibly release an additional Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the revised 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 repair procedures given in this service bulletin.
MANPOWER Elapsed Time (Hours)Total Man-HoursAirplanes
13.527All Airplanes - Area 1 1020Group 1 - Area 2 510Group 2 - Area 2 3672All Airplanes - Area 3 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 9 of 51 BOEING SERVICE BULLETIN 747-53A2465
BOEING SERVICE BULLETIN 747-53A2465
MATERIAL INFORMATION None STA 265 STA 280 STA 300 STA 400 WL 180 STA 320 WL 170 STA 340 WL 160 WL 150 FWD AREA 1: FROM INSIDE THE NOSE WHEEL WELL, DO
EXTERNAL DETAILED AND/OR UT INSPECTIONS OF THE SIDEWALL PANEL WEB AT WL 150, 160 AND 170 FOR CRACKS.
AREA 2: FROM INSIDE THE NOSE WHEEL WELL, DO EXTERNAL DETAILED AND/OR UT INSPECTIONS OF WL 140 THE TOP PANEL WEB (GROUP 1 ONLY) AND SIDEWALL PANEL WEB AT WL 140 AND 180 FOR CRACKS. WL 130 AREA 3: DO INTERNAL DETAILED AND SURFACE HFEC INSPECTIONS
OF THE NOSE WHEEL WELL TOP PANEL AND SIDE PANEL STIFFENERS FOR CRACKS.
IF CRACKS ARE FOUND, REPAIR BEFORE ANY MORE FLIGHTS. V43411 Original Issue: April 05, 2001 Revision 5: July 11, 2013 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 747-53A2465 Work - See page 1 for details. 10 of 51
Commercial Airplanes 747 Service Bulletin Number: 747-53A2465 Original Issue: April 05, 2001 Revision 5: July 11, 2013 ATA System: 5311 SUBJECT: FUSELAGE - Main Frame - Nose Wheel Well Side Panel and Top Panel - Web and Stiffener Inspection
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index D6-30300 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplane(s) shown below.
DESCRIPTIONCONFIGURATIONGROUP 747 airplanes, line numbers 1 - 1419, except 747-200C, 747-200F, and 747-400F airplanes.
-1 All 747-200C, 747-200F, and 747-400F airplanes.-2 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 - RA034 1RA101 - RA115 1RA161 - RA164 1RA201 - RA203 1RA216 - RA217 1RA245 - RA246 1RA251 - RA266 1RA301 - RA318 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 11 of 51
GroupVariable Number 1RA351 - RA360 1RA369 - RA373 1RA401 - RA418 1RA501 - RA502 1RA521 - RA528 1RA532 - RA548 1RA551 - RA552 1RA559 - RA561 1RA581 - RA582 1RA585 1RA601 - RA602 1RA631 - RA635 1RA651 - RA652 1RA671 - RA677 1RA701 - RA702 1RA721 - RA731 1RA741 - RA745 1RA749 - RA750 1RA761 - RA762 1RA781 - RA784 1RA901 - RA916 1RB001 - RB016 1RB041 - RB044 1RB071 - RB075 1RB101 - RB102 1RB411 - RB413 1RB421 1RB601 - RB607 1RB681 - RB697 1RB711 1RB721 - RB723 1RB741 - RB748 1RD001 - RD004 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 05, 2001 747-53A2465Revision 5: July 11, 2013 12 of 51 BOEING SERVICE BULLETIN 747-53A2465