Commercial 

Airplanes 737

Service Bulletin

SPECIAL ATTENTION

Number: 737-25-1598

Original Issue: December 08, 2009

ATA System: 2522

SUBJECT: EQUIPMENT/FURNISHINGS - Passenger Seat - Move The Passenger Seats

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Table of Contents

Summary ...................................................... 5

1. PLANNING INFORMATION ........................................ 9

A. Effectivity ................................................ 9

1. Airplanes ............................................. 9

2. Spares Affected ......................................... 9

B. Concurrent Requirements ....................................... 9

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1. Existing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2. Data supplied with this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3. Installation Drawings Used in the Preparation of this Service Bulletin . . . . . . . . . . . . 11

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1. Kits/Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2. Parts and Materials Supplied by the Operator . . . . . . . . . . . . . . . . . . . . . . . . 13

3. Parts Modified and Reidentified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4. Parts Removed and Not Replaced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 13

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

FIGURE 1: MOVE THE PASSENGER SEAT - LEFT SIDE OF AISLE . . . . . . . . . . . . . . . . . . 17

FIGURE 2: MOVE THE PASSENGER SEAT - RIGHT SIDE OF AISLE . . . . . . . . . . . . . . . . . 19

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Commercial 

Airplanes 737

Service Bulletin

SPECIAL ATTENTION

Summary Number: 737-25-1598

Original Issue: December 08, 2009

ATA System: 2522

SUBJECT: EQUIPMENT/FURNISHINGS - Passenger Seat - Move The Passenger Seats

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

CONCURRENT REQUIREMENTS

None.

BACKGROUND

This service bulletin gives instructions to move the passenger seats at STA 521.45 seat track split. The existing

aft seat leg fittings span the STA 521.45 Stay-Out Zone. The Stay-Out Zone defines the flex area of the aircraft

while in flight and defines fatigue loading of the aircraft structure. If the change given in this service bulletin is

not done, passengers may become injured due to the inability of the seat attachment structure to remain intact

during a crash landing.

Boeing Service Related Problem (SRP) 737NG-SRP-25-0272 is related to this service bulletin.

ACTION (PRR 38740)

Get access to the passenger cabin. Remove seat track covers. Do a General Visual Inspection of the seat tracks

for damage and repair if necessary. Loosen screws and anti-rattle nuts. Move passenger seats at row 7 and

row 8. Tighten screws and anti-rattle nuts. Install seat track covers.

EFFECTIVITY

737-700 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 change, given in this service bulletin be done within 72 months, after the original

issue date of this service bulletin.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are available for airplanes in warranty as of May 09, 2007. Please refer to Paragraph

2.B., Industry Support Information.

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MANPOWER

Airplanes Total Task Hours Elapsed Hours

YB208 2.75 * 2.75 *

* Time does not include seat track repair.

MATERIAL INFORMATION

None.

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Commercial 

Airplanes 737

Service Bulletin

SPECIAL ATTENTION

Number: 737-25-1598

Original Issue: December 08, 2009

ATA System: 2522

SUBJECT: EQUIPMENT/FURNISHINGS - Passenger Seat - Move The Passenger Seats

BOEING RECOMMENDS THAT EACH OPERATOR EXAMINE THIS SERVICE BULLETIN IMMEDIATELY.

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index Document D6-19567 Part 3 for Airplane Variable Number, Line

Number, and Serial Number data.

This service bulletin is for the airplanes shown below. Refer to PRR - 38740 for data about this

change.

GROUP CONFIGURATION DESCRIPTION

1 - 737-700 Airplanes.

Airplane Models:

737-700

Variable Number Group

YB208 1

2. Spares Affected

None.

B. Concurrent Requirements

None.

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C. Reason

This service bulletin gives instructions to move the passenger seats at STA 521.45 seat track split.

The existing aft seat leg fittings span the STA 521.45 Stay-Out Zone. The Stay-Out Zone defines the

flex area of the aircraft while in flight and defines fatigue loading of the aircraft structure. If the change

given in this service bulletin is not done, passengers may become injured due to the inability of the

seat attachment structure to remain intact during a crash landing.

Boeing Service Related Problem (SRP) 737NG-SRP-25-0272 is related to this service bulletin.

D. Description

Get access to the passenger cabin. Remove seat track covers. Do a General Visual Inspection of the

seat tracks for damage and repair if necessary. Loosen screws and anti-rattle nuts. Move passenger

seats at row 7 and row 8. Tighten screws and anti-rattle nuts. Install seat track covers.

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

Affected Maintenance Zones

Model Zone

737-700 231, 232

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 change, given in this service bulletin be done within 72 months, after the

original issue date of 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 Federal Aviation Regulations (FAR) and are FAA

approved. This service bulletin and the FAA approval were based on the airplane in its original Boeing

delivery configuration or as modified by other FAA 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 service bulletin 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 make the parts

• Time to find the tools.

Group 1: Move Passenger Seats

Number of Per- Task Hours Elapsed Hours

sons

Task

Open Access 1 0.25 0.25

Figure 1 1 1.25 (a) 1.25 (a)

Figure 2 1 1.25 (a) 1.25 (a)

TOTAL FOR EACH AIRPLANE 2.75 (a) 2.75 (a)

(a) Hours do not include time for seat track repair.

H. Weight and Balance Changes

Change in Weight Change in Moment (Pound-Inches)

Airplane (Pounds)

Group 1 Negligible Pounds. - 339.0 Pound-Inches.

I. Electrical Load Data

Nones.

J. References

1. Existing Data

a. Engineering Change Memo PRR 38740

b. Service Related Problem (SRP) 737NG-SRP-25-0272

c. 737-600/700/800/900 Aircraft Maintenance Manual (AMM) 25-22-00

d. 737-700 Structural Repair Manual (SRM) 53-00-52

2. Data supplied with this Service Bulletin

None.

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

Drawing Number Title

RR97171-217 Interior Arrangement

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These drawings were used to prepare this service bulletin. These drawings are not necessary to

make the specified changes, and are not supplied with this service bulletin. These drawings may

not be applicable to all airplane configurations or operators.

K. Publications Affected

1. Publications:

Publication Chapter-Section

737 Maintenance Manual 25-22-00

737 Structural Repair Manual 53-30-52

2. Damage Tolerance Based Structural Inspections:

Boeing has evaluated 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

Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts.

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2. MATERIAL INFORMATION

A. Material - Price and Availability

None.

B. Industry Support Information

Boeing warranty remedies are available for 737 airplanes in warranty as of May 09, 2007. For task

hour and material reimbursement for airplanes in warranty as of that date, send a warranty claim to

Boeing Commercial Airplanes Group - Warranties.

C. Parts Necessary For Each Airplane

1. Kits/Parts

None.

2. Parts and Materials Supplied by the Operator

None.

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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3. ACCOMPLISHMENT INSTRUCTIONS

A. GENERAL INFORMATION

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.

NOTE: 1. The paragraphs identified with a number give the general work instructions. The

instructions identified with numbers on the figures give the recommended sequence

of steps. The sequence of steps to do this service bulletin can be changed.

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

definition of the acronyms.

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

4. Unless shown differently, these dimensions and tolerances are used:

– Linear dimensions are in inches

– Tolerance on linear dimensions, is plus or minus 0.03 inch

– Torque limits to tighten nuts and bolts are given in 737-700 SRM, Chapter 51

5. A Detailed Inspection is defined as: An intensive examination of a specific item,

installation, or assembly to detect damage, failure, or irregularity. Available lighting

is normally supplemented with a direct source of good lighting at an intensity deemed

appropriate. Inspection aids such as mirrors, magnifying lenses, etc. may be

necessary. Surface cleaning and elaborate procedures may be required.

6. A General Visual Inspection is defined as: A visual examination of an interior or

exterior area, installation or assembly to detect obvious damage, failure or irregularity.

This level of inspection is made from within touching distance unless otherwise

specified. A mirror may be necessary to ensure visual access to all surfaces in the

inspection area. This level of inspection is made under normal available lighting

conditions such as daylight, hangar lighting, flashlight or drop-light and may require

removal or opening of access panels or doors. Stands, ladders or platforms may be

required to gain proximity to the area being checked.

7. 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

1. Get access to passenger cabin.

2. Left side of aisle.

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a. Move the passenger seat rows on the left side, in accordance with Figure 1.

3. Right side of aisle.

a. Move the passenger seat rows on the right side, in accordance with Figure 2.

4. Put the airplane back to a serviceable condition.

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The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The

QTYnumbers shown below are the number of parts necessary for one side of airplane.

FIGURE 1: MOVE THE PASSENGER SEAT - LEFT SIDE OF AISLE

(SHEET 1 OF 2)

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STEP TASK NAME IDENTIFICATION QTY MORE DATA

Inboard seat track covers between

row 6 and row 7, row 7 and row 8,

row 8 and row 9.

1 Remove/Keep Seat Track Cover 65C37062-61V 3

Outboard seat track covers between row 6 and row 7, row 7 and

row 8, row 8 and row 9.

65C37062-62V 3

Do a General Visual Inspection for

damage and repair if necessary.

Refer to 737-700 SRM 53-00-52 as

an accepted procedure.

2 Inspect/Repair Seat Track - -

Seats at row 7 and row 8. Refer to

737-600/700/800/900 AMM 25-22-

00 as an accepted procedure.

3 Loosen Screw - 4

Seats at row 7 and row 8. Refer to

737-600/700/800/900 AMM 25-22-

00 as an accepted procedure.

4 Loosen Anti-Rattle Nut - 4

(a). One inch forward at row 7 and

row 8 as shown.

5 Adjust Triple Seats 1003379-001 2

Seats at row 7 and row 8. Refer to

737-600/700/800/900 AMM 25-22-

00 as an accepted procedure.

6 Tighten Anti-Rattle Nut - 4

Seats at row 7 and row 8. Refer to

737-600/700/800/900 AMM 25-22-

00 as an accepted procedure.

7 Tighten Screw - 4

(b). Inboard seat track covers between row 6 and row 7, row 7 and

row 8, row 8 and row 9.

8 Install/Kept Seat Track Cover 65C37062-61V 3

(b). Outboard seat track covers between row 6 and row 7, row 7 and

row 8, row 8 and row 9.

65C37062-62V 3

(a) Refer to 737-600/700/800/900 AMM 25-22-00 as an accepted procedure. Measuring from front stud to

front stud.

(b) Seat Track Cover that was originally between row 6 and row 7 shall be positioned between row 8 and row

9 and vice versa.

FIGURE 1: MOVE THE PASSENGER SEAT - LEFT SIDE OF AISLE

(SHEET 2 OF 2)

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The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The

QTYnumbers shown below are the number of parts necessary for one side of airplane.

FIGURE 2: MOVE THE PASSENGER SEAT - RIGHT SIDE OF AISLE

(SHEET 1 OF 2)

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STEP TASK NAME IDENTIFICATION QTY MORE DATA

Inboard seat track covers between

row 6 and row 7, row 7 and row 8,

row 8 and row 9.

1 Remove/Keep Seat Track Cover 65C37062-61V 3

Outboard seat track covers between row 6 and row 7, row 7 and

row 8, row 8 and row 9.

65C37062-62V 3

Do a General Visual Inspection for

damage and repair if necessary.

Refer to 737-700 SRM 53-00-52 as

an accepted procedure.

2 Inspect/Repair Seat Track - -

Seats at row 7 and row 8. Refer to

737-600/700/800/900 AMM 25-22-

00 as an accepted procedure.

3 Loosen Screw - 4

Seats at row 7 and row 8. Refer to

737-600/700/800/900 AMM 25-22-

00 as an accepted procedure.

4 Loosen Anti-Rattle Nut - 4

(a). One inch forward at row 7 and

row 8 as shown.

5 Adjust Triple Seats 1003379-002 2

Seats at row 7 and row 8. Refer to

737-600/700/800/900 AMM 25-22-

00 as an accepted procedure.

6 Tighten Anti-Rattle Nut - 4

Seats at row 7 and row 8. Refer to

737-600/700/800/900 AMM 25-22-

00 as an accepted procedure.

7 Tighten Screw - 4

(b). Inboard seat track covers between row 6 and row 7, row 7 and

row 8, row 8 and row 9.

8 Install/Kept Seat Track Cover 65C37062-61V 3

(b). Outboard seat track covers between row 6 and row 7, row 7 and

row 8, row 8 and row 9.

65C37062-62V 3

(a) Refer to 737-600/700/800/900 AMM 25-22-00 as an accepted procedure. Measuring from front stud to

front stud.

(b) Seat Track Cover that was originally between row 6 and row 7 shall be positioned between row 8 and row

9 and vice versa.

FIGURE 2: MOVE THE PASSENGER SEAT - RIGHT SIDE OF AISLE

(SHEET 2 OF 2)

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