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Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION Number: 767-53-0207 Original Issue: December 17, 2009 ATA System: 5365 2312 SUBJECT: FUSELAGE - Section 46 Skin - Fuselage Skin and Backup Structure Inspection and Repair at the Lower VHF Antenna Cutout at Station 1197 + 99, Between Stringers 39L and 39R 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BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2009 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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 0 B. Concurrent Requirements ...................................... 1 0 C. Reason ................................................ 1 0 D. Description .............................................. 1 1 E. Compliance .............................................. 1 1 F. Approval ............................................... 1 3 G. Manpower .............................................. 1 3 H. Weight and Balance Changes .................................... 1 5 I. Electrical Load Data ......................................... 1 5 J. References .............................................. 1 5
1. Existing Data .......................................... 1 5
2. Data supplied with this Service Bulletin ............................ 1 5
3. Installation Drawings Used in the Preparation of this Service Bulletin ............ 1 5 K. Publications Affected ........................................ 1 6 L. Interchangeability and Intermixability of Parts ........................... 1 6
2. MATERIAL INFORMATION ........................................ 1 7 A. Material - Price and Availability ................................... 1 7 B. Industry Support Information .................................... 1 7 C. Parts Necessary For Each Airplane ................................. 1 7
1. Kits/Parts ............................................ 1 7
2. Parts and Materials Supplied by the Operator ........................ 1 7
3. Parts Modified and Reidentified ................................ 1 7
4. Parts Removed and Not Replaced .............................. 1 7 D. Parts Necessary to Change Spares ................................. 1 7 E. Special Tooling - Price and Availability ............................... 1 7 F. Special Tooling Necessary to do this Service Bulletin ....................... 1 7
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 1 9 A. GENERAL INFORMATION ..................................... 1 9 B. WORK INSTRUCTIONS ....................................... 1 9 FIGURE 1: FUSELAGE SKIN WITH THE ANTENNA REMOVED - INSPECTION ........... 2 2 FIGURE 2: BACKUP STRUCTURE - INSPECTION ........................... 2 4 FIGURE 3: FUSELAGE SKIN WITHOUT ANTENNA REMOVED - INSPECTION ............ 2 6
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Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION SummaryNumber: 767-53-0207Original Issue: December 17, 2009 ATA System: 5365 2312 SUBJECT: FUSELAGE - Section 46 Skin - Fuselage Skin and Backup Structure Inspection and Repair at the Lower VHF Antenna Cutout at Station 1197 + 99, Between Stringers 39L and 39R BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.
CONCURRENT REQUIREMENTS None.
BACKGROUND Accomplishment of the inspections in this service bulletin will make sure that cracks in fuselage skin around the VHF antenna and internal backup structure at station 1197+ 99 are found and repaired. If not repaired, cracks in the fuselage skin and/or internal backup structure could result in unscheduled repairs.
Two operators have reported cracks in the section 46 fuselage lower skin around the periphery of the VHF antenna baseplate at station 1197+99. One operator reported 5 cracks with a maximum length of 11 inches, found on an airplane with 38,804 total flight-hours/34,929 total flight-cycles. Another operator reported a maximum crack length of 9.5 inches, found on an airplane with 60,467 total flight-hours/29,185 total fight-cycles. Boeing investigation has revealed that the fuselage skin and/or internal backup structure cracks are attributed to fatigue.
This fatigue is the result of bending loads in the skin, which are caused by vibration of the antenna in flight. No operator reported crack findings for the backup structure.
This service bulletin gives instructions to do detail inspections for cracks, and repair if necessary, of the fuselage skin and internal backup structure at the VHF antenna at station 1197+ 99.
Boeing Service Related Problem (SRP) 767-SRP-53-0323 is related to this service bulletin.
ACTION Part 1 - Fuselage Skin and Backup Structure Inspection ( Initial Inspection ) Do an external Detail Inspection ( DI ) of the fuselage skin at the lower aft VHF antenna cutout and internal DI of the backup structure for crack at station 1197+99 and do as follows:
Condition 1 ( No fuselage skin and backup structure crack found ) Do an external DI of the fuselage skin in accordance with Part 2 at the times given in Paragraph 1.E.Table 2 Compliance.
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Condition 2 ( Fuselage skin crack found ) Repair fuselage skin crack in accordance with 767-300 SRM.
Condition 3 ( Backup structure crack found ) Repair or replace cracked part(s).
Part 2 - Fuselage Skin Inspection ( Repeat Inspection ) Do an external DI of the fuselage skin for crack at the periphery of the antenna baseplate and do as follows:
Condition 4 ( No fuselage skin crack found ) Repeat Part 2 Paragraph 1 inspection at the times given in Paragraph 1.E. Table 2 Compliance.
Condition 5 ( Fuselage skin crack found ) Repair fuselage skin crack in accordance with 767-300 SRM.
Airplanes after line number 350 incorporate an improved VHF antenna backup structure that makes skin cracks around the antenna cutout less likely.
EFFECTIVITY 767-300 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 configuration changes, inspection and/or repair procedures given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION None.
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Commercial Airplanes 767 Service Bulletin
SPECIAL ATTENTION Number: 767-53-0207 Original Issue: December 17, 2009 ATA System: 5365 2312 SUBJECT: FUSELAGE - Section 46 Skin - Fuselage Skin and Backup Structure Inspection and Repair at the Lower VHF Antenna Cutout at Station 1197 + 99, Between Stringers 39L and 39R BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index Document D624T001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplanes shown below.
DESCRIPTIONCONFIGURATIONGROUP 767-300 airplanes. Line numbers 132-350 except 310, 323, 328, 331,and 332.
-1 Airplane Models:
767-300 GroupVariable Number 1VK001 - VK011 1VK021 - VK022 1VK031 - VK048 1VK081 - VK097 1VL001 - VL006 1VL011 1VN001 - VN015
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GroupVariable Number 1VN051 - VN060 1VN081 - VN088 1VN111 - VN119 1VN151 - VN156 1VN163 - VN166 1VN171 - VN173 1VN191 - VN192 1VN211 - VN212 1VN221 - VN222 1VN231 - VN234 1VN241 1VN251 - VN259 1VN291 1VN301 - VN303
2. Spares Affected None.
B. Concurrent Requirements None.
C. Reason Accomplishment of the inspections in this service bulletin will make sure that cracks in fuselage skin around the VHF antenna and internal backup structure at station 1197+ 99 are found and repaired. If not repaired, cracks in the fuselage skin and/or internal backup structure could result in unscheduled repairs.
Two operators have reported cracks in the section 46 fuselage lower skin around the periphery of the VHF antenna baseplate at station 1197+99. One operator reported 5 cracks with a maximum length of 11 inches, found on an airplane with 38,804 total flight-hours/34,929 total flight-cycles. Another operator reported a maximum crack length of 9.5 inches, found on an airplane with 60,467 total flight-hours/29,185 total fight-cycles. Boeing investigation has revealed that the fuselage skin and/or internal backup structure cracks are attributed to fatigue. This fatigue is the result of bending loads in the skin, which are caused by vibration of the antenna in flight. No operator reported crack findings for the backup structure.
This service bulletin gives instructions to do detail inspections for cracks, and repair if necessary, of the fuselage skin and internal backup structure at the VHF antenna at station 1197+ 99.
Boeing Service Related Problem (SRP) 767-SRP-53-0323 is related to this service bulletin.
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Original Issue: December 17, 2009 767-53-0207 10 of 27 BOEING SERVICE BULLETIN 767-53-0207
D. Description Part 1 - Fuselage Skin and Backup Structure Inspection. ( Initial Inspection ) Do an external Detail Inspection ( DI ) of the fuselage skin at the lower aft VHF antenna cutout and internal DI of the backup structure for crack at station 1197+ 99 and do as follows:
Condition 1 ( No fuselage skin and backup structure crack found ) Do an external DI of the fuselage skin in accordance with Part 2 at the times given in Paragraph 1.E.
Table 2 Compliance.
Condition 2 ( Fuselage skin crack found ) Repair fuselage skin crack in accordance with 767-300 SRM.
Condition 3 ( Backup structure crack found ) Repair or replace cracked part(s).
Part 2 - Fuselage Skin Inspection ( Repeat Inspection ) Do an external DI of the fuselage skin for crack at the periphery of the antenna baseplate and do as follows:
Condition 4 ( No fuselage skin crack found ) Repeat Part 2 Paragraph 1 inspection at the times given in Paragraph 1.E. Table 2 Compliance Condition 5 ( Fuselage skin crack found ) Repair fuselage skin crack in accordance with 767-300 SRM Airplanes after line number 350 incorporate an improved VHF antenna backup structure that makes skin cracks around the antenna cutout less likely.
The work in this service bulletin is done in the maintenance zone(s) given below.
Affected Maintenance Zones ZoneModel 155, 156767-300 E. 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.
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Table 1 - Initial Inspection Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later ) ActionCondition -Within 3000 flight cycles after the date on this service bulletin.
Within 25,000 total flight cycles.
( 1 ) Do an external Detail Inspection ( DI ) of the fuselage skin with the antenna removed, in accordance with Accomplishment Instructions Paragraph 3.B. Part 1.
All airplanes
(a) -Within 3,000 flight cycles after the date on this service bulletin Within 25,000 total flight cycles.
( 2 ) Do an internal DI of the antenna backup structure in accordance with Accomplishment Instructions Paragraph 3.B.
Part 1. or Within 6,000 flight cycles if no fuselage skin cracks are found per external detailed inspection. ( 1 ) ---Go to Accomplishment Instructions Paragraph
3.B. Part 2.
Condition 1 - No fuselage skin and backup structure crack found.
(b)-Before further flight.
Repair fuselage skin crack in accordance with Accomplishment Instructions Paragraph 3.B. Part
1.
Condition 2 - Fuselage skin crack found.
--Before further flight.
Repair or replace cracked part(s) in accordance with Accomplishment Instructions Paragraph 3.B. Part
1.
Condition 3 - Backup structure crack found.
(a) Airplanes with FAA approved repairs for skin cracking at this subject location prior to the release of this service bulletin, do not require this service bulletin action.
(b) Do the repair in accordance with Accomplishment Instructions 3.B. Part 1 to terminate the inspections in this service bulletin.
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