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Commercial Airplanes 737 Service Bulletin ALERT Number: 737-54A1044 Original Issue: December 10, 2007 Revision 2: January 20, 2010 ATA System: 5410 SUBJECT: NACELLES/PYLONS - Nacelle Strut - Midspar Fuse Pin - Inspection, Repair 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BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2007 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 1 of 57
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BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 2 of 57 BOEING SERVICE BULLETIN 737-54A1044
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Table of Contents
Revision Transmittal Sheet5
Summary7
1. PLANNING INFORMATION ........................................ 1 1 A. Effectivity ............................................... 1 1
1. Airplanes ............................................ 1 1
2. Spares Affected ........................................ 1 7 B. Concurrent Requirements ...................................... 1 7 C. Reason ................................................ 1 7 D. Description .............................................. 1 8 E. Compliance .............................................. 1 9 F. Approval ............................................... 2 7 G. Manpower .............................................. 2 8 H. Weight and Balance Changes .................................... 2 8 I. Electrical Load Data ......................................... 2 8 J. References .............................................. 2 9
1. Existing Data: ......................................... 2 9
2. Data supplied with this Service Bulletin: ........................... 2 9
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 9 K. Publications Affected ........................................ 2 9 L. Interchangeability and Intermixability of Parts ........................... 2 9
2. MATERIAL INFORMATION ........................................ 3 1 A. Material - Price and Availability ................................... 3 1 B. Industry Support Information .................................... 3 1 C. Parts Necessary For Each Airplane ................................. 3 1
1. Kits/Parts: ........................................... 3 1
2. Parts and Materials Supplied by the Operator: ........................ 3 1
3. Parts Modified and Reidentified: ............................... 3 1
4. Parts Removed and Not Replaced: .............................. 3 2 D. Parts Necessary to Change Spares ................................. 3 2 E. Special Tooling - Price and Availability ............................... 3 2 F. Special Tooling Necessary to do this Service Bulletin ....................... 3 2
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 3 3 A. GENERAL INFORMATION ..................................... 3 3 B. WORK INSTRUCTIONS ....................................... 3 3 FIGURE 1: LEFT SIDE ENGINE STRUT - INBOARD AND OUTBOARD - MIDSPAR FUSE PIN - INSPECTION .......................................... 4 1 FIGURE 2: RIGHT SIDE ENGINE STRUT - INBOARD AND OUTBOARD - MIDSPAR FUSE PIN - INSPECTION .......................................... 4 3 FIGURE 3: MIDSPAR FUSE PIN - REPAIR ................................ 4 5 FIGURE 4: LEFT SIDE ENGINE STRUT - INBOARD - MIDSPAR FUSE PIN - INSTALLATION OF NEW MATERIAL FUSE PIN ..................................... 4 6 FIGURE 5: LEFT SIDE ENGINE STRUT - OUTBOARD - MIDSPAR FUSE PIN - INSTALLATION OF NEW MATERIAL FUSE PIN ..................................... 4 9 FIGURE 6: RIGHT SIDE ENGINE STRUT - INBOARD - MIDSPAR FUSE PIN - INSTALLATION OF NEW MATERIAL FUSE PIN ..................................... 5 2
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Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 3 of 57 BOEING SERVICE BULLETIN 737-54A1044
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FIGURE 7: RIGHT SIDE ENGINE STRUT - OUTBOARD - MIDSPAR FUSE PIN - INSTALLATION OF NEW MATERIAL FUSE PIN ..................................... 5 5
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Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 4 of 57 BOEING SERVICE BULLETIN 737-54A1044
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Commercial Airplanes 737 Service Bulletin ALERT Revision Transmittal SheetNumber: 737-54A1044Original Issue: December 10, 2007 Revision 2: January 20, 2010 ATA System: 5410 SUBJECT: NACELLES/PYLONS - Nacelle Strut - Midspar Fuse Pin - Inspection, Repair and Replacement This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Airworthiness Directive AD 2008-21-03, is related to this service bulletin.
No more work is necessary on airplanes changed as shown in Revision 1 of this service bulletin.
REASON FOR REVISION This revision is sent to change the compliance table number referenced in the second paragraph in Section F.
Approval, from Table 7 to Table 1.
These sections were changed:
1. Paragraph 1.E., Compliance: added that AD 2008-21-03 is related to this service bulletin.
2. Paragraph 1.F., Approval: revised Table 7 to Table 1 and added "or revision 2", in the AMOC paragraph.
3. Paragraph 1.K., Publications Affected: added the damage tolerance statement that was at the bottom of the compliance table.
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 December 10, 2007Original Issue:
November 26, 2008Revision 1:
January 20, 2010Revision 2:
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 5 of 57
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 6 of 57 BOEING SERVICE BULLETIN 737-54A1044
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Commercial Airplanes 737 Service Bulletin ALERT SummaryNumber: 737-54A1044Original Issue: December 10, 2007 Revision 2: January 20, 2010 ATA System: 5410 SUBJECT: NACELLES/PYLONS - Nacelle Strut - Midspar Fuse Pin - Inspection, Repair 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 or to inspect the left and right side engine strut, inboard and outboard midspar fuse pins for any cracking, pitting, corrosion and chrome plate damage. If the work given in this service bulletin is not accomplished, damage to the midspar fuse pins may go undetected. Undetected damage could result in the loss of structural integrity of the midspar fuse pins and cause an engine breakaway from the airplane.
One operator found one 737-300 airplane with all four engine strut midspar fuse pins with corrosion damage.
One of the midspar fuse pins had corrosion common to the chrome run out on the head side. Also, a large portion of the chrome plate was missing from the corroded area of the shank. The airplane had a total of 28,621 flight cycles.
Boeing Service Related Problem (SRP) 737-SRP-54-0115 is related to this service bulletin.
ACTION (PRR 35005-273RS) Identify the part numbers of the left and right side engine strut, inboard and outboard midspar fuse pins.
Remove 311A1092-2 midspar fuse pins and install 311A1092-3 midspar fuse pins.
Alternatively, for a limited time, do a detailed inspection of 311A1092-2 midspar fuse pins for any cracking, pitting, corrosion or chrome plate damage. If damage is found, discard or repair the damaged midspar fuse pins.
Install new or serviceable midspar fuse pins and do the repeat inspection at the specified interval.
EFFECTIVITY All 737-300, -400, -500 Airplanes. Refer to Paragraph 1.A.1., Airplanes for the list of affected airplanes.
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Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 7 of 57
COMPLIANCE Refer to Paragraph 1.E., Compliance.
Federal Aviation Administration (FAA) Airworthiness Directive AD 2008-21-03 is related to this service bulletin.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
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.
Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 8 of 57 BOEING SERVICE BULLETIN 737-54A1044
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BOEING SERVICE BULLETIN 737-54A1044
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IDENTIFY THE LEFT AND RIGHT SIDE, INBOARD AND OUTBOARD MIDSPAR FUSE PINS.
REPLACE ALL OLD MATERIAL FUSE PINS WITH NEW MATERIAL FUSE PINS.
ALTERNATIVELY, FOR A LIMITED TIME, DO A DETAILED INSPECTION OF THE
MIDSPAR FUSE PINS FOR ANY CRACKING, PITTING, CORROSION OR CHROME PLATE DAMAGE. IF DAMAGE IS FOUND, DISCARD OR REPAIR THE DAMAGED MIDSPAR FUSE PINS. INSTALL NEW OR SERVICEABLE MIDSPAR FUSE PINS. 1544673 Original Issue: December 10, 2007 Revision 2: January 20, 2010 737-54A1044
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 57
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 10 of 57 BOEING SERVICE BULLETIN 737-54A1044
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Commercial Airplanes 737 Service Bulletin ALERT Number: 737-54A1044 Original Issue: December 10, 2007 Revision 2: January 20, 2010 ATA System: 5410 SUBJECT: NACELLES/PYLONS - Nacelle Strut - Midspar Fuse Pin - Inspection, Repair 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 This service bulletin is for the airplanes shown below. Refer to PRR 35005-273RS for data about this change.
Refer to Service Bulletin Index Document D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
DESCRIPTIONCONFIGURATIONGROUP All 737-300, -400, -500 airplanes.-1 Airplane Models:
737-300, 737-400, 737-500 GroupVariable Number 1PJ301 - PJ302 1PJ551 - PJ561 1PJ601 - PJ615 1PJ811 1PJ816 - PJ817
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Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 11 of 57
GroupVariable Number 1PM381 - PM399 1PM401 - PM417 1PM541 - PM564 1PP001 - PP054 1PP101 - PP169 1PP181 - PP199 1PP201 - PP205 1PP221 1PP231 - PP243 1PP281 - PP286 1PP301 - PP305 1PP351 - PP353 1PP376 - PP384 1PP391 - PP393 1PP401 - PP440 1PP471 - PP475 1PP501 - PP522 1PP631 - PP634 1PP651 - PP652 1PP671 - PP699 1PP701 - PP733 1PP771 - PP779 1PP801 - PP808 1PP821 - PP827 1PP831 - PP848 1PP851 - PP852 1PP861 - PP877 1PP891 - PP899 1PP901 - PP936 1PP946 - PP948 1PP951 - PP952 1PP961 - PP967 1PP981 - PP991
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Original Issue: December 10, 2007 737-54A1044Revision 2: January 20, 2010 12 of 57 BOEING SERVICE BULLETIN 737-54A1044