Commercial McDonnell Douglas

Airplanes MD90

Service Bulletin

Number: MD90-28-010

Original Issue: February 22, 2008

Revision 1: June 16, 2009

ATA System: 2800

SUBJECT: FUEL - Fuel Systems - Change or Replace Fuel Boost Pumps

Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15

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ECCN: 9E991

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Copyright © 2008 The Boeing Company

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2.0
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BLANK PAGE
Table of Contents

Revision Transmittal Sheet ............................................ 5

Summary ..................................................... 7

1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 16

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . . . 19

3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 20

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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BOEING SERVICE BULLETIN MD90-28-010

BLANK PAGE
Commercial McDonnell Douglas

Airplanes MD90

Service Bulletin

Revision Transmittal Sheet Number: MD90-28-010

Original Issue: February 22, 2008

Revision 1: June 16, 2009

ATA System: 2800

SUBJECT: FUEL - Fuel Systems - Change or Replace Fuel Boost Pumps

This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION

Federal Aviation Administration (FAA) Notice of Proposed Rule Making 2008-NM-113-AD, is related to this

service bulletin.

No more work is necessary on airplanes changed in accordance with the original issue of this service bulletin.

REASON FOR REVISION

This revision is sent to change the Revision level of Argo-Tech Service Bulletin 398000-28-2 to Revision 1.

These sections were changed:

1. In Paragraph 1.B., Concurrent Requirements, changed Argo-Tech Service Bulletin Revision level.

2. In Paragraph 1.D., Description, added Affected Maintenance Zone Tables.

3. In Paragraph 1.E., Compliance, added Notice of Proposed Rule Making (NPRM) statements.

4. In Paragraph 1.F., Approval, added Revision 1.

5. In Paragraph 1.J.1., Existing Data, changed Argo-Tech Bulletin 398000-28-2 Revision level and added FAA

Notice of Proposed Rule Making.

6. In Paragraph 1.K., Publication Affected, removed Special Compliance Item Report Revision level.

7. In Paragraph 2.E., Special Tooling - Price and Availability removed special tooling statement.

8. In Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin, changed statement.

9. In Paragraph 3.B., Work Instructions, changed Argo-Tech Service Bulletin 398000-28-2 Revision level.

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.

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REVISION HISTORY

Original Issue: February 22, 2008

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BOEING SERVICE BULLETIN MD90-28-010
Commercial McDonnell Douglas

Airplanes MD90

Service Bulletin

Summary Number: MD90-28-010

Original Issue: February 22, 2008

Revision 1: June 16, 2009

ATA System: 2800

SUBJECT: FUEL - Fuel Systems - Change or Replace Fuel Boost Pumps

CONCURRENT REQUIREMENTS

Refer to Paragraph 1.B., Concurrent Requirements.

BACKGROUND

The Special Federal Aviation Regulation (SFAR 88) safety review has determined the need to protect the fuel

boost pump stator lead wires from being able to contact the pump rotor/shaft assembly. Lead wire contact and

the resulting chafing may result in an ignition source (energized rotor assembly) being produced in the fuel boost

pump inlet that could propagate into the fuel tank when the fuel boost pump inlet is not fully covered by fuel.

Replacement of the fuel boost pump will minimize the risk of a potential arc/spark condition that may occur within

the airplane's fuel tanks at critical fuel boost pumps in the center wing and forward auxiliary tanks. If not corrected,

there is a potential that an arc/spark condition could occur within the fuel boost pumps and propagate into the

fuel tank.

This service bulletin is the result of the safety assessments conducted by Boeing under SFAR 88, "Fuel Tank

System Fault Tolerance Evaluation Requirements".

ACTION

Refer to Paragraph 1.D., Description.

EFFECTIVITY

MD-90-30 Airplanes. Refer to Paragraph 1.A.1., Airplanes for the list of affected airplanes.

COMPLIANCE

Federal Aviation Administration (FAA) Notice of Proposed Rule Making 2008-NM-113-AD, is related to this

service bulletin.

Boeing recommends accomplishment of this service bulletin within 5 years after original issue date of service

bulletin

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

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MANPOWER

Group 1, Configuration 1-2:

Airplanes Total Task Hours Elapsed Hours

MD-90-30 *3.0 *3.0

Group 2, Configuration 1-2:

Airplanes Total Task Hours Elapsed Hours

MD-90-30 *4.5 *4.5

* The manpower required to change fuel boost pump in accordance with Argo-Tech Service Bulletin listed in Paragraph 1.J.1.,

Existing Data are not included.

MATERIAL INFORMATION

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

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BLANK PAGE
Commercial McDonnell Douglas

Airplanes MD90

Service Bulletin

Number: MD90-28-010

Original Issue: February 22, 2008

Revision 1: June 16, 2009

ATA System: 2800

SUBJECT: FUEL - Fuel Systems - Change or Replace Fuel Boost Pumps

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

This service bulletin is for the airplanes shown below.

GROUP CONFIGURATION DESCRIPTION

1 - Change or replace fuel boost pumps on center wing tank.

1 Applicable to airplanes with fuel boost pump 398000-1.

2 Applicable to airplanes with fuel boost pump 65-5093-4.

Change or replace fuel boost pumps on center wing and forward

auxiliary tanks.

2 -

1 Applicable to airplanes with fuel boost pump 398000-1.

2 Applicable to airplanes with fuel boost pump 65-5093-4.

Airplane Models:

MD-90-30

Fuselage Num- Group

ber

2094 - 2100 1

2115 1

2117 1

2120 1

2122 - 2123 1

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Fuselage Num- Group

ber

2125 - 2126 1

2129 1

2131 1

2133 1

2136 1

2138 1

2140 - 2144 1

2146 - 2147 1

2149 - 2150 1

2153 - 2154 1

2156 - 2159 1

2161 - 2166 1

2169 - 2171 1

2173 1

2175 1

2177 1

2179 1

2181 - 2182 1

2184 1

2186 1

2190 - 2191 1

2193 - 2194 1

2195 2

2197 - 2198 1

2200 1

2202 - 2203 1

2205 1

2207 1

2209 - 2213 1

2215 - 2217 1

2219 - 2233 1

2235 - 2237 1

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BOEING SERVICE BULLETIN MD90-28-010
Fuselage Num- Group

ber

2240 1

2243 2

2245 1

2248 1

2250 - 2251 1

2253 1

2255 - 2263 1

2288 - 2290 1

4001 - 4002 1

2. Spares Affected

Group 1-2, Configuration 1:

Examine your spares supply for the parts or components identified in Paragraph 2.D., Parts

Necessary to Change Spares. If any parts or components are found, refer to Paragraph 2.D for

spares modification information.

Group 1-2, Configuration 2:

None.

B. Concurrent Requirements

Group 1-2, Configuration 1:

The service bulletin listed below must be done at the same time as this service bulletin:

Company Service Bulletin Description

Change or replace fuel boost pump 398000-

1 to 398000-2 configuration.

Argo-Tech 398000-28-2 Revision 1

A copy may be ob- Argo-Tech Corporation

tained from: 23555 Euclid Avenue

Cleveland, Ohio 44117 USA

Phone: (216) 692-7151

Group 1-2, Configuration 2:

None.

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BOEING SERVICE BULLETIN MD90-28-010
C. Reason

The Special Federal Aviation Regulation (SFAR 88) safety review has determined the need to protect

the fuel boost pump stator lead wires from being able to contact the pump rotor/shaft assembly. Lead

wire contact and the resulting chafing may result in an ignition source (energized rotor assembly) being

produced in the fuel boost pump inlet that could propagate into the fuel tank when the fuel boost pump

inlet is not fully covered by fuel. Replacement of the fuel boost pump will minimize the risk of a potential

arc/spark condition that may occur within the airplane's fuel tanks at critical fuel boost pumps in the

center wing and forward auxiliary tanks. If not corrected, there is a potential that an arc/spark condition

could occur within the fuel boost pumps and propagate into the fuel tank.

This service bulletin is the result of the safety assessments conducted by Boeing under SFAR 88, "Fuel

Tank System Fault Tolerance Evaluation Requirements".

Revision 1 is sent to change the Revision level of Argo-Tech Service Bulletin 398000-28-2 to Revision

1.

D. Description

Group 1, Configuration 1:

This service bulletin provides instructions to change fuel boost pumps on center wing tank in accordance

with Argo-Tech Service Bulletin listed in Paragraph 1.J.1., Existing Data or replace with part number

398000-2.

Group 1, Configuration 2:

This service bulletin provides instructions to replace fuel boost pumps on center wing tank with part

number 398000-2.

Group 2, Configuration 1:

This service bulletin provides instructions to change fuel boost pumps on center wing and forward

auxiliary tanks in accordance with Argo-Tech Service Bulletin listed in Paragraph 1.J.1., Existing Data

or replace with part number 398000-2.

Group 2, Configuration 2:

This service bulletin provides instructions to replace fuel boost pumps on center wing and forward

auxiliary tanks with part number 398000-2.

Revision 1 - No more work is necessary on airplanes changed in accordance with the original issue of

this service bulletin.

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

Group 1:

Affected Maintenance Zones

Model Zone

MD-90-30 621

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BOEING SERVICE BULLETIN MD90-28-010
Group 2:

Affected Maintenance Zones

Model Zone

MD-90-30 222, 621

E. Compliance

Federal Aviation Administration (FAA) Notice of Proposed Rule Making 2008-NM-113-AD, is related

to this service bulletin.

Boeing recommends accomplishment of this service bulletin within 5 years after original issue date of

service bulletin.

F. Approval

The resultant modification described in Paragraph 1.D has been shown to comply with the applicable

Federal Aviation Regulations and Revision 1 is approved by the Manager, Los Angeles Aircraft

Certification Office, FAA Northwest Mountain Region.

G. Manpower

The table below shows an estimate of the task hours necessary to do this modification 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:

— Time to adjust to the workplace

— Time to schedule the work

— Time to examine the work

— Time to cure the materials

— Time to make the parts

— Time to find the tools.

Group 1, Configuration 1-2:

Task Number of Persons Task Hours Elapsed Hours

Open Access 1 0.5 0.5

Change or replace 1 1.0 1.0

Close Access 1 0.5 0.5

Functional Test 1 1.0 1.0

TOTAL FOR EACH AIRPLANE 3.0 3.0

Group 2, Configuration 1-2:

Task Number of Persons Task Hours Elapsed Hours

Open Access 1 1.0 1.0

Change or replace 1 1.5 1.5

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BOEING SERVICE BULLETIN MD90-28-010
Group 2, Configuration 1-2:

Task Number of Persons Task Hours Elapsed Hours

Close Access 1 1.0 1.0

Functional Test 1 1.0 1.0

TOTAL FOR EACH AIRPLANE 4.5 4.5

The manpower required to change fuel boost pump in accordance with Argo-Tech

Service Bulletin listed in Paragraph 1.J.1., Existing Data are not included.

H. Weight and Balance Changes

None.

I. Electrical Load Data

Not changed.

J. References

1. Existing Data:

a. Argo-Tech Service Bulletin 398000-28-2 Revision 1.

b. Federal Aviation Administration, Special Federal Aviation Regulation (SFAR) 88.

c. FAA Notice of Proposed Rule Making 2008-NM-113-AD.

d. MD-90 Aircraft Maintenance Manual (AMM) 28-22-01.

2. Data supplied with this Service Bulletin:

None.

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

Drawing Number Title Change

SR90280005 Replacement Installation - Fuel Pump New

This drawing is 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.

K. Publications Affected

Publication Chapter-Section

Illustrated Parts Catalog 28-22 and 28-23

Special Compliance Item Report MDC-92K9145 (CDCCL 28-2)

Supplier Component Maintenance Manual 28-20-6

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BOEING SERVICE BULLETIN MD90-28-010
L. Interchangeability and Intermixability of Parts

The new fuel boost pump part number 398000-2 is the only part number that may be installed in the

center wing tank and forward auxiliary tank.

The new fuel boost pump part number 398000-2 may also be installed in all other tanks as an alternate

part number.

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BLANK PAGE
2. MATERIAL INFORMATION

A. Material - Price and Availability

Refer to Argo-Tech Service Bulletin listed in Paragraph 1.J.1., Existing Data.

B. Industry Support Information

Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

C. Parts Necessary For Each Airplane

1. Kits/Parts:

Group 1-2, Configuration 1:

Refer to Argo-Tech Service Bulletin listed in Paragraph 1.J.1., Existing Data.

Group 1, Configuration 2:

New Part Number QTY Name Existing Part Number

398000-2 2 Fuel Boost Pump 65-5093-4

Group 2, Configuration 2:

New Part Number QTY Name Existing Part Number

398000-2 4 Fuel Boost Pump 65-5093-4

2. Parts and Materials Supplied by the Operator:

Group 1-2, Configuration 1:

Refer to Argo-Tech Service Bulletin listed in Paragraph 1.J.1., Existing Data.

Group 1-2, Configuration 2:

None.

3. Parts Modified and Reidentified:

Group 1-2, Configuration 1:

Refer to Argo-Tech Service Bulletin listed in Paragraph 1.J.1., Existing Data.

Group 1-2, Configuration 2:

None.

4. Parts Removed and Not Replaced:

Group 1-2, Configuration 1:

Refer to Argo-Tech Service Bulletin listed in Paragraph 1.J.1., Existing Data.

Group 1-2, Configuration 2:

None.

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BOEING SERVICE BULLETIN MD90-28-010
D. Parts Necessary to Change Spares

Group 1-2, Configuration 1:

Refer to Argo-Tech Service Bulletin listed in Paragraph 1.J.1., Existing Data.

Group 1-2, Configuration 2:

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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BOEING SERVICE BULLETIN MD90-28-010
3. ACCOMPLISHMENT INSTRUCTIONS

A. GENERAL INFORMATION

WARNING: IF ELECTRICAL POWER IS APPLIED TO THE AIRPLANE, MAKE SURE YOU OBEY

ALL PRECAUTIONS WHILE YOU DO WORK. IF YOU DO NOT OBEY THE

PRECAUTIONS, DEATH OR INJURY TO PERSONS, AND DAMAGE TO THE AIRPLANE

CAN OCCUR.

CAUTION: KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL

PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL,

METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE

DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR

OTHER ELECTRICAL DAMAGE.

CAUTION: ELECTRICALLY GROUND THE AIRPLANE. THIS WILL HELP TO PREVENT DAMAGE

TO THE AIRPLANE OR EQUIPMENT.

NOTE: 1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for

definition of the acronyms.

2. Obey all of the warnings and cautions given in the specified manual sections.

3. These work instructions refer to procedures included in other Boeing documents.

When the words "refer to" are used and the operator has an accepted alternative

procedure, the accepted alternative procedure can be used. When the words "in

accordance with" are included in the instruction, the procedure in the Boeing document

must be used.

B. WORK INSTRUCTIONS

Group 1, Configuration 1:

1. Open access panel 620AT. Refer to MD-90 AMM 28-22-01.

2. Remove center wing tank fuel boost pumps in accordance with MD-90 AMM 28-22-01.

3. Change or replace the fuel boost pumps in accordance with Argo-Tech Service Bulletin 398000-28-2

Revision 1.

4. Install center wing tank fuel boost pumps part number 398000-2 in accordance with MD-90 AMM

28-22-01.

5. Close access panel 620AT. Refer to MD-90 AMM 28-22-01.

6. Do an operational test of the center wing tank fuel boost pumps in accordance with MD-90 AMM

28-22-01.

7. Put the airplane back to a serviceable condition.

Group 1, Configuration 2:

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BOEING SERVICE BULLETIN MD90-28-010
1. Open access panel 620AT. Refer to MD-90 AMM 28-22-01.

2. Replace center wing tank fuel boost pumps with part number 398000-2 in accordance with MD-90

AMM 28-22-01.

3. Close access panel 620AT. Refer to MD-90 AMM 28-22-01.

4. Do an operational test of the center wing tank fuel boost pumps in accordance with MD-90 AMM

28-22-01.

5. Put the airplane back to a serviceable condition.

Group 2, Configuration 1:

1. Open access panels 620AT, 222CF, 222FF, and 222HF. Refer to MD-90 AMM 28-22-01.

2. Remove center wing tank fuel boost pumps in accordance with MD-90 AMM 28-22-01.

3. Remove forward auxiliary tank fuel boost pumps in accordance with MD-90 AMM 28-22-01.

4. Change or replace the fuel boost pumps in accordance with Argo-Tech Service Bulletin 398000-28-2

Revision 1.

5. Install center wing tank fuel boost pumps part number 398000-2 in accordance with MD-90 AMM

28-22-01.

6. Install forward auxiliary tank fuel boost pumps part number 398000-2 in accordance with MD-90

AMM 28-22-01.

7. Close access panel 620AT. Refer to MD-90 AMM 28-22-01.

8. Do an operational test on the center wing and forward auxiliary tank fuel boost pumps in accordance

with MD-90 AMM 28-22-01.

9. Close access panels 222CF, 222FF, and 222HF. Refer to MD-90 AMM 28-22-01.

10. Put the airplane back to a serviceable condition.

Group 2, Configuration 2:

1. Open access panels 620AT, 222CF, 222FF, and 222HF. Refer to MD-90 AMM 28-22-01.

2. Replace center wing tank fuel boost pumps with part number 398000-2 in accordance with MD-90

AMM 28-22-01.

3. Replace forward auxiliary tank fuel boost pumps with part number 398000-2 in accordance with

MD-90 AMM 28-22-01.

4. Close access panel 620AT. Refer to MD-90 AMM 28-22-01.

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Original Issue: February 22, 2008

Revision 1: June 16, 2009 MD90-28-010

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BOEING SERVICE BULLETIN MD90-28-010
5. Do an operational test on the center wing and forward auxiliary tank fuel boost pumps in accordance

with MD-90 AMM 28-22-01.

6. Close access panels 222CF, 222FF, and 222HF. Refer to MD-90 AMM 28-22-01.

7. Put the airplane back to a serviceable condition.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.

Original Issue: February 22, 2008

Revision 1: June 16, 2009 MD90-28-010

23 of 23

BOEING SERVICE BULLETIN MD90-28-010