### 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 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. 9E991 ECCN: 

## BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2009 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 1 of 20 2.0BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 2 of 20 **BOEING SERVICE BULLETIN 737-25-1598**

BLANK PAGE**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

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 3 of 20 **BOEING SERVICE BULLETIN 737-25-1598**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 4 of 20 **BOEING SERVICE BULLETIN 737-25-1598**

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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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 5 of 20**MANPOWER Elapsed Hours**  **Total Task Hours Airplanes**  2.75 * 2.75 * YB208 * Time does not include seat track repair.

**MATERIAL INFORMATION** None.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 6 of 20 **BOEING SERVICE BULLETIN 737-25-1598**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 7 of 20 **BOEING SERVICE BULLETIN 737-25-1598**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 8 of 20 **BOEING SERVICE BULLETIN 737-25-1598**

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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. **DESCRIPTION CONFIGURATION**  **GROUP** 737-700 Airplanes.
- 1
Airplane Models: 737-700 **Group Variable Number**  1 YB208 2. Spares Affected None. **B. Concurrent Requirements** None.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 9 of 20**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 Zone**  **Model** 231, 232 737-700 **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:

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 10 of 20 **BOEING SERVICE BULLETIN 737-25-1598**• 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 Elapsed Hours**  **Task Hours Number of Per-**  **sons Task** 
0.25 0.25 1 Open Access 1.25 (a) 1.25 (a) 1 Figure 1 1.25 (a) 1.25 (a) 1 Figure 2 2.75 (a) 2.75 (a) TOTAL FOR EACH AIRPLANE (a) Hours do not include time for seat track repair. **H. Weight and Balance Changes Change in Moment (Pound-Inches)**  **Change in Weight (Pounds)**  **Airplane** - 339.0 Pound-Inches. Negligible Pounds. Group 1 **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 **Title Drawing Number**  Interior Arrangement RR97171-217

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 11 of 20 **BOEING SERVICE BULLETIN 737-25-1598**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: **Chapter-Section Publication**  25-22-00 737 Maintenance Manual 53-30-52 737 Structural Repair Manual 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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 12 of 20 **BOEING SERVICE BULLETIN 737-25-1598 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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 13 of 20 **BOEING SERVICE BULLETIN 737-25-1598**BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 14 of 20 **BOEING SERVICE BULLETIN 737-25-1598**

BLANK PAGE**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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 15 of 20 **BOEING SERVICE BULLETIN 737-25-1598**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.

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 16 of 20 **BOEING SERVICE BULLETIN 737-25-1598**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)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 17 of 20 **BOEING SERVICE BULLETIN 737-25-1598 MORE DATA**  **QTY IDENTIFICATION**  **NAME TASK**  **STEP** Inboard seat track covers between row 6 and row 7, row 7 and row 8, row 8 and row 9. 3 65C37062-61V Seat Track Cover Remove/Keep 1

Outboard seat track covers between row 6 and row 7, row 7 and row 8, row 8 and row 9. 3 65C37062-62V
Do a General Visual Inspection for damage and repair if necessary. Refer to 737-700 SRM 53-00-52 as an accepted procedure. - - Seat Track Inspect/Repair 2

Seats at row 7 and row 8. Refer to 737-600/700/800/900 AMM 25-22- 00 as an accepted procedure. 4
- Screw Loosen 3

Seats at row 7 and row 8. Refer to 737-600/700/800/900 AMM 25-22- 00 as an accepted procedure. 4
- Anti-Rattle Nut Loosen 4
(a). One inch forward at row 7 and row 8 as shown. 2 1003379-001 Triple Seats Adjust 5
Seats at row 7 and row 8. Refer to 737-600/700/800/900 AMM 25-22- 00 as an accepted procedure. 4
- Anti-Rattle Nut Tighten 6

Seats at row 7 and row 8. Refer to 737-600/700/800/900 AMM 25-22- 00 as an accepted procedure. 4
- Screw Tighten 7
(b). Inboard seat track covers between row 6 and row 7, row 7 and row 8, row 8 and row 9. 3 65C37062-61V Seat Track Cover Install/Kept 8
(b). Outboard seat track covers between row 6 and row 7, row 7 and row 8, row 8 and row 9. 3 65C37062-62V
(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)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 18 of 20 **BOEING SERVICE BULLETIN 737-25-1598**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)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 19 of 20 **BOEING SERVICE BULLETIN 737-25-1598 MORE DATA**  **QTY IDENTIFICATION**  **NAME TASK**  **STEP** Inboard seat track covers between row 6 and row 7, row 7 and row 8, row 8 and row 9. 3 65C37062-61V Seat Track Cover Remove/Keep 1

Outboard seat track covers between row 6 and row 7, row 7 and row 8, row 8 and row 9. 3 65C37062-62V
Do a General Visual Inspection for damage and repair if necessary. Refer to 737-700 SRM 53-00-52 as an accepted procedure. - - Seat Track Inspect/Repair 2

Seats at row 7 and row 8. Refer to 737-600/700/800/900 AMM 25-22- 00 as an accepted procedure. 4
- Screw Loosen 3

Seats at row 7 and row 8. Refer to 737-600/700/800/900 AMM 25-22- 00 as an accepted procedure. 4
- Anti-Rattle Nut Loosen 4
(a). One inch forward at row 7 and row 8 as shown. 2 1003379-002 Triple Seats Adjust 5
Seats at row 7 and row 8. Refer to 737-600/700/800/900 AMM 25-22- 00 as an accepted procedure. 4
- Anti-Rattle Nut Tighten 6

Seats at row 7 and row 8. Refer to 737-600/700/800/900 AMM 25-22- 00 as an accepted procedure. 4
- Screw Tighten 7
(b). Inboard seat track covers between row 6 and row 7, row 7 and row 8, row 8 and row 9. 3 65C37062-61V Seat Track Cover Install/Kept 8
(b). Outboard seat track covers between row 6 and row 7, row 7 and row 8, row 8 and row 9. 3 65C37062-62V
(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)** 

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: December 08, 2009 737-25-1598 20 of 20 **BOEING SERVICE BULLETIN 737-25-1598**