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Commercial Airplanes MD11 Service Bulletin

SPECIAL ATTENTION Number: MD11-55-027 Original Issue: March 17, 2011 ATA System: 5510 SUBJECT: STABILIZERS - Horizontal Stabilizer - Change Rub Strips of Tail Fuel Tank Center Box Front Spar Access Doors 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BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2011 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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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Original Issue: March 17, 2011 MD11-55-027 2 of 18 BOEING SERVICE BULLETIN MD11-55-027

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Table of Contents

Summary5

1. PLANNING INFORMATION7

A. Effectivity7

1. Airplanes7

2. Spares Affected7

B. Concurrent Requirements7

C. Reason8

D. Description8

E. Compliance8

F. Approval8

G. Manpower8

H. Weight and Balance Changes9

I. Electrical Load Data9

J. References9

1. Existing Data9

2. Data supplied with this Service Bulletin9

3. Installation Drawings Used in the Preparation of this Service Bulletin9

K. Publications Affected ........................................ 1 0 L. Interchangeability and Intermixability of Parts ........................... 1 0

2. MATERIAL INFORMATION ........................................ 1 1 A. Material - Price and Availability ................................... 1 1 B. Industry Support Information .................................... 1 1 C. Parts Necessary For Each Airplane ................................. 1 1

1. Kits/Parts ............................................ 1 1

2. Parts and Materials Supplied by the Operator ........................ 1 2

3. Parts Modified and Reidentified ................................ 1 2

4. Parts Removed and Not Replaced .............................. 1 2 D. Parts Necessary to Change Spares ................................. 1 2 E. Special Tooling - Price and Availability ............................... 1 2 F. Special Tooling Necessary to do this Service Bulletin ....................... 1 2

3. ACCOMPLISHMENT INSTRUCTIONS .................................. 1 3 A. GENERAL INFORMATION ..................................... 1 3 B. WORK INSTRUCTIONS ....................................... 1 4 FIGURE 1: CHANGE RUB STRIPS OF TAIL FUEL TANK CENTER BOX FRONT SPAR ACCESS DOOR .................................................. 1 5

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Commercial Airplanes MD11 Service Bulletin

SPECIAL ATTENTION SummaryNumber: MD11-55-027Original Issue: March 17, 2011 ATA System: 5510 SUBJECT: STABILIZERS - Horizontal Stabilizer - Change Rub Strips of Tail Fuel Tank Center Box Front Spar Access Doors BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

CONCURRENT REQUIREMENTS None.

BACKGROUND An investigation by Boeing revealed that the rub strips of tail fuel tank center box front spar access doors were manufactured improperly. Tail center box fuel tank front spar access door rub strips were inadvertently anodized (electrically non-conductive) instead of alodined (electrically conductive) as prescribed in design drawings.

Anodization of the rub strips may prevent adequate electrical bonding between the rub strips and the doors.

Replacing anodized rub strips with alodined rub strips will provide adequate electrical bonding between the rub strips and the fuel access doors. If not corrected, inadequate electrical bonding can contribute to possible ignition of flammable fuel vapor in the tail fuel tank as a result of a lightning strike.

ACTION This service bulletin provides instructions to change the rub strips of the tail fuel tank center box front spar access doors.

EFFECTIVITY MD-11 and MD-11F 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.

Boeing recommends that the rub strips of the tail fuel tank center box front spar access doors be changed within 60 months after the original issue date on this service bulletin.

INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of July 21, 2010. Please refer to Paragraph

2.B., Industry Support Information.

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MANPOWER Elapsed HoursTotal Task HoursAirplanes

16.032.0MD-11, MD-11F

MATERIAL INFORMATION Boeing Supplied Kits/Parts.

Refer to Paragraph 2.A., Material - Price and Availability.

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Commercial Airplanes MD11 Service Bulletin

1. PLANNING INFORMATION A. Effectivity

1. Airplanes This service bulletin is for the airplanes shown below.

DESCRIPTIONCONFIGURATIONGROUP Change Rub Strips of Tail Fuel Tank Center Box Front Spar Access Doors for Fuselage Number 447 - 613 -1 Airplane Models:

MD-11, MD-11F GroupFuselage Number 1447 - 613

2. Spares Affected None.

B. Concurrent Requirements None.

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C. Reason An investigation by Boeing revealed that the rub strips of tail fuel tank center box front spar access doors were manufactured improperly. Tail center box fuel tank front spar access door rub strips were inadvertently anodized (electrically non-conductive) instead of alodined (electrically conductive) as prescribed in design drawings. Anodization of the rub strips may prevent adequate electrical bonding between the rub strips and the doors. Replacing anodized rub strips with alodined rub strips will provide adequate electrical bonding between the rub strips and the fuel access doors. If not corrected, inadequate electrical bonding can contribute to possible ignition of flammable fuel vapor in the tail fuel tank as a result of a lightning strike.

D. Description This service bulletin provides instructions to change the rub strips of the tail fuel tank center box front spar access doors.

The work in this service bulletin is done in the maintenance zone(s) given below.

Affected Maintenance Zones ZoneModel 189MD-11, MD-11F 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.

Boeing recommends that the rub strips of the tail fuel tank center box front spar access doors be changed within 60 months after the original issue date on this service bulletin.

F. Approval This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin.

G. Manpower The table below shows an estimate of the task hours necessary to do this change for each airplane.

This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator task hour data if necessary. The estimate does not include lost time. These are some examples of lost time:

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Time to adjust to the workplace Time to schedule the work Time to inspect the work Time to cure the materials Time to make the parts Time to find the tools.

Elapsed HoursTask HoursNumber of PersonsTask

5.010.02Defuel and Purge

1.02.02Remove Fuel Tank Access Doors

7.515.02Change Rub Strips

1.02.02Install Fuel Tank Access Doors

1.53.02Leak Check

16.032.0TOTAL FOR EACH AIRPLANE H. Weight and Balance Changes None.

I. Electrical Load Data Not changed.

J. References

1. Existing Data

a. MD-11, MD-11F Aircraft Maintenance Manual (AMM) 52-57-19.

b. MD-11, MD-11F Structural Repair Manual (SRM) 51-42-07.

2. Data supplied with this Service Bulletin None.

3. Installation Drawings Used in the Preparation of this Service Bulletin ChangeTitleDocument Number

Z, AEO AASPAR ASSY - CONSTANT HORIZ

STAB, FORWARD ALC8020 This drawing was used to prepare this service bulletin. This drawing is not necessary to make the specified changes, and is not supplied with this service bulletin. This drawing may not be applicable to all airplane configurations or operators.

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K. Publications Affected

1. Publications:

Chapter-SectionPublication 51-42-07Structural Repair Manual

2. Damage Tolerance Based Structural Inspections:

Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary.

L. Interchangeability and Intermixability of Parts Refer to Paragraph 2.C., Parts Necessary for Each Airplane, for interchangeability and intermixability information.

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2. MATERIAL INFORMATION A. Material - Price and Availability Boeing can supply the parts shown in Paragraph 2.C., Parts Necessary for Each Airplane. Operators are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin.

The parts are subject to the terms and conditions of the Boeing standard purchase order acknowledgment. Prices are in United States Dollars. Terms: Net 30 days.

Reference this service bulletin and submit your purchase order by one of these methods:

1. Order on-line via ATA Spec 2000 or The Boeing PART Page

2. Fax to (206) 662-7145 REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION ROLT as of the original issue date of this Service Bulletin (Calendar Days) QTYNamePart Number 602RUB STRIPALC8028-1 6036RIVETBACR15BA3AD8C B. Industry Support Information Boeing warranty remedies are available for MD-11 airplanes in warranty as of July 21, 2010. For task hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing Commercial Airplanes Group - Warranties. The parts for airplanes in warranty as of that date will be supplied at no charge. Send a purchase order for the parts to Boeing Spares. Please refer to this service bulletin number and reference the airplane fuselage number in your purchase order.

Boeing Commercial Airplanes Group - Warranties P.O. Box 3707 M/C 2L-46 Seattle, Washington 98124-2207 USA (Service Bulletin MD11-55-027) C. Parts Necessary For Each Airplane

1. Kits/Parts To get the parts shown below, refer to Paragraph 2.A., Material - Price and Availability.

NOTE: The parts shown below and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by the Operator, are necessary for each airplane.

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NotesExisting PartNameQTYNew Part Number

(a)ALC8028-1RUB STRIP2ALC8028-1

(b)MS20426AD3RIVET36BACR15BA3AD8C

(a) Alodined rub strip, part number ALC8028-1 replaces existing anodized rub strip part number ALC8028-1.

(b) Alodined rivet, part number BACR15BA3AD8C replaces existing rivet, part number MS20426AD3.

2. Parts and Materials Supplied by the Operator NotesNameQTYPart Number / Specification

(a)Sealing Compound, Integral Fuel Tanks and Fuel Cell Cavities 1 QuartPR-1422 B-2 (DMS 2082 B-2) or Equivalent CAGEPRC-DeSoto International, Incorporation(a) Can be purchased from:

8357424811 Avenue Rockefeller Valencia, California 91355-3468

3. Parts Modified and Reidentified None.

4. Parts Removed and Not Replaced None.

D. Parts Necessary to Change Spares None.

E. Special Tooling - Price and Availability None.

F. Special Tooling Necessary to do this Service Bulletin No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance and overhaul tools in the manuals given in Paragraph 1.J., References, can be necessary. Examine operator tool supply to make sure all necessary tools are available.

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