### Commercial **Airplanes** 

# 737 Service Bulletin **ALERT Number: 737-22A1215**  Original Issue: November 22, 2013 ATA System: 2231 **SUBJECT:** AUTOFLIGHT - Autothrottle System - Autothrottle Computer Replacement Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). 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 © 2013 Boeing. Unpublished Work. All Rights Reserved. Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company. 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, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and Boeing liveries 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.

Original Issue: November 22, 2013 737-22A1215 1 of 22 4.0Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 2 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**

BLANK PAGE**Table of Contents** Summary...................................................... 5 1. PLANNING INFORMATION ........................................ 9 A. Effectivity................................................ 9 1. Airplanes............................................. 9 2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 B. Concurrent Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 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 M. Software Accomplishment Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4. Parts Removed and Not Replaced. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 3 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 4 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**

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### Commercial **Airplanes** 

# 737 Service Bulletin **ALERT Summary**  **Number: 737-22A1215** Original Issue: November 22, 2013 ATA System: 2231 **SUBJECT:** AUTOFLIGHT - Autothrottle System - Autothrottle Computer Replacement THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER. **CONCURRENT REQUIREMENTS** None. **BACKGROUND** This service bulletin gives instructions to change the GE Autothrottle Computer. The new GE Autothrottle Computer, part number 760SUE2-5, has new software installed. The new software will prevent a single erroneous but valid radio altitude signal from causing the autothrottle to decrease thrust. A decrease in thrust could prevent a continued safe flight and landing. As a result of in-service incidents, it was found that an erroneous unflagged Radio Altimeter output would cause the autothrottle to enter Landing Flare Retard mode prematurely on approach. If this change is not done, an erroneous unflagged Radio Altimeter output on a manual or single channel autopilot approach could result in premature Autothrottle Landing Flare Retard and the loss of automatic speed control. Boeing Service Related Problem (SRP) 737NG-SRP-22-0032 is related to this service bulletin. As a part of a service bulletin remote certification program, this change was completed on airplane YA104 by Service Bulletin 737-22A1215 RC01 before the Original Issue of this service bulletin. The change completed on airplane YA104 by Service Bulletin 737-22A1215 RC01 is equivalent to the Original Issue of this service bulletin. Airplane YA104 has the configuration of a Group 1 airplane. This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
**Reference Affected**  **Planning Data** Paragraph 1.A.2., Spares Affected Yes Spares Affected Paragraph 1.E., Compliance Yes AD Related Paragraph 1.H., Weight and Balance Changes No Weight and Balance Change Paragraph 1.I., Electrical Load Data No Electrical Load Changed

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 5 of 22**Reference Affected**  **Planning Data** Paragraph 1.K., Publications Affected Yes Publications Affected Paragraph 1.K., Publications Affected No Airplane Flight Operations Affected (Flight CrewOperations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/Parts No Kits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator Yes Operator Supplied Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin No Special Tooling Required

**ACTION (PRR 38275-168RS)** Get access to the main electronics compartment. At the E1-1 electronics shelf, change the Autothrottle Computer. Do an operational test of the Autothrottle system. **EFFECTIVITY** 737-600/-700/-700C/-800/-900 Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s). **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 36 months after the original issue date of this service bulletin. **INDUSTRY SUPPORT INFORMATION** Boeing warranty remedies are not available for the configuration changes given in this service bulletin. **MANPOWER Elapsed Hours**  **Total Task Hours Airplanes**  1.00 1.00 Group 1
**MATERIAL INFORMATION** Operator Supplied Parts/Materials. Refer to Paragraph 2.A., Material - Price and Availability

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 6 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 7 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 8 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**

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### Commercial **Airplanes** 

# 737 Service Bulletin **ALERT Number: 737-22A1215**  Original Issue: November 22, 2013 ATA System: 2231 **SUBJECT:** AUTOFLIGHT - Autothrottle System - Autothrottle Computer Replacement THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER. **1. PLANNING INFORMATION A. Effectivity**  1. Airplanes Refer to Service Bulletin Index D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data. This service bulletin is for the airplane(s) shown below. Refer to PRR 38275-168RS for data about this change.
**DESCRIPTION CONFIGURATION**  **GROUP** 737 Airplanes with GE Autothrottle Computer part number 760SUE1-1 or 760SUE2-2 or 760SUE2-3 or 760SUE2-4 or 10-62017-51 or 10-62017-52 or 10-62017-53 or 10-62017-54 installed - 1

Airplane Models: 737-600, 737-700, 737-700C, 737-800, 737-900 **Group Variable Number**  1 YA001 - YA099 1 YA101 - YA128 1 YA201 - YA211 1 YA221 1 YA231 - YA242

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 9 of 22**Group Variable Number**  1 YA251 - YA256 1 YA271 - YA272 1 YA291 1 YA301 - YA302 1 YA311 - YA314 1 YA321 - YA323 1 YA336 - YA345 1 YA351 1 YA356 - YA357 1 YA366 - YA367 1 YA371 1 YA501 - YA536 1 YA541 - YA552 1 YA571 - YA578 1 YA601 - YA615 1 YA621 - YA622 1 YA626 - YA629 1 YA635 - YA636 1 YA641 1 YA645 - YA650 1 YA656 - YA659 1 YA671 - YA672 1 YA681 - YA691 1 YA701 - YA708 1 YA721 - YA722 1 YA731 - YA734 1 YA751 - YA756 1 YA801 - YA803 1 YA809 1 YA811 - YA814 1 YA831 - YA835 1 YA841 - YA858 1 YA881 - YA882

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 10 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT Group**  **Variable Number** 1 YA891 - YA892 1 YA961 - YA970 1 YB001 - YB006 1 YB101 - YB119 1 YB151 - YB153 1 YB161 - YB162 1 YB171 - YB172 1 YB181 - YB183 1 YB201 - YB207 1 YB271 1 YB276 1 YB301 - YB310 1 YB501 - YB502 1 YB521 1 YB551 1 YB561 - YB566 1 YB601 - YB605 1 YC001 - YC030 1 YC051 - YC082 1 YC091 - YC094 1 YC101 - YC104 1 YC111 - YC113 1 YC121 1 YC126 - YC127 1 YC136 - YC141 1 YC146 - YC147 1 YC151 - YC156 1 YC166 - YC169 1 YC171 1 YC176 - YC178 1 YC301 - YC304 1 YC321 - YC383 1 YC391 - YC392

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 11 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT Group**  **Variable Number** 1 YC396 1 YC401 - YC417 1 YC421 - YC422 1 YC426 - YC428 1 YC436 - YC437 1 YC441 - YC448 1 YC451 - YC455 1 YC459 1 YC461 - YC467 1 YC471 - YC499 1 YC501 - YC526 1 YC571 - YC583 1 YC587 - YC589 1 YC591 - YC593 1 YC601 - YC655 1 YC681 - YC696 1 YC701 - YC715 1 YC720 - YC725 1 YC727 - YC741 1 YC751 - YC752 1 YC761 - YC770 1 YC781 - YC793 1 YC801 - YC892 1 YC901 - YC907 1 YC921 - YC922 1 YC931 - YC932 1 YC941 - YC951 1 YC971 - YC978 1 YC981 - YC983 1 YD001 - YD006 1 YD021 - YD025 1 YD041 - YD055 1 YD081 - YD084

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 12 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT Group**  **Variable Number** 1 YD101 - YD107 1 YD121 - YD126 1 YD151 - YD155 1 YD171 - YD172 1 YD201 - YD203 1 YD206 - YD209 1 YD216 - YD217 1 YD251 - YD254 1 YD256 - YD257 1 YD301 - YD330 1 YD391 1 YD401 - YD410 1 YD481 - YD483 1 YD501 - YD507 1 YD531 - YD534 1 YD541 - YD547 1 YD601 - YD612 1 YE001 - YE020 1 YE051 1 YE101 - YE109 1 YE151 - YE157 1 YE171 - YE172 1 YE201 - YE204 1 YE301 - YE305 1 YG001 - YG044 1 YG061 - YG064 1 YG066 - YG089 1 YG201 1 YG501 - YG506 1 YG601 - YG602 1 YJ001 - YJ002 1 YJ471 - YJ479 1 YJ501 - YJ517

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 13 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT Group**  **Variable Number** 1 YJ631 - YJ632 1 YJ671 - YJ676 1 YJ801 - YJ804 1 YJ871 2. Spares Affected Examine your spares supply for the parts or components identified below. If any parts or components are found, refer to Paragraph 3.B., Work Instructions for the recommended action. **Boeing Part Number GE Part Number**  10-62017-51 760SUE1-1 10-62017-52 760SUE2-2 10-62017-53 760SUE2-3 10-62017-54 760SUE2-4 **B. Concurrent Requirements** None. **C. Reason** This service bulletin gives instructions to change the GE Autothrottle Computer. The new GE Autothrottle Computer, part number 760SUE2-5, has new software installed. The new software will prevent a single erroneous but valid radio altitude signal from causing the autothrottle to decrease thrust. A decrease in thrust could prevent a continued safe flight and landing. As a result of in-service incidents, it was found that an erroneous unflagged Radio Altimeter output would cause the autothrottle to enter Landing Flare Retard mode prematurely on approach. If this change is not done, an erroneous unflagged Radio Altimeter output on a manual or single channel autopilot approach could result in premature Autothrottle Landing Flare Retard and the loss of automatic speed control. Boeing Service Related Problem (SRP) 737NG-SRP-22-0032 is related to this service bulletin. As a part of a service bulletin remote certification program, this change was completed on airplane YA104 by Service Bulletin 737-22A1215 RC01 before the Original Issue of this service bulletin. The change completed on airplane YA104 by Service Bulletin 737-22A1215 RC01 is equivalent to the Original Issue of this service bulletin. Airplane YA104 has the configuration of a Group 1 airplane. **D. Description** Get access to the main electronics compartment. At the E1-1 electronics shelf, change the Autothrottle Computer. Do an operational test of the Autothrottle system.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 14 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**The work in this service bulletin is done in the maintenance zone(s) given below.
**Affected Maintenance Zones Zone**  **Model** 117 737-600, 737-700, 737-700C, 737-800, 737-900 **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 36 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 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: • 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 Hours Task Hours**  **Number of Persons Task**  0.25 0.25 1 Open Access 0.25 0.25 1 Change 0.25 0.25 1 Close Access 0.25 0.25 1 Test

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 15 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT Elapsed Hours**  **Task Hours Number of Persons**  **Task** 1.00 1.00 TOTAL FOR EACH AIRPLANE The time to make the change to the Autothrottle Computer in accordance with General Electric Co SB 760SUE-22-1303 Service Bulletin is not included. **H. Weight and Balance Changes** None. **I. Electrical Load Data** Not changed. **J. References** 1. Existing Data: a. Engineering Change Memo PRR 38275-168RS b. Boeing Service Related Problem (SRP) 737NG-SRP-22-0032 c. Service Bulletin Index D6-19567 d. 737-600/700/800/900 Aircraft Maintenance Manual (AMM) 22-31-00, 22-31-10 e. General Electric Co Service Bulletin 760SUE-22-1268, 760SUE-22-1303 **NOTE:** The supplier was told to send copies of the service bulletin to each operator. 2. Data Supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin: None. **K. Publications Affected** 1. Publications: **Chapter-Section Publication**  22-31 737 Illustrated Parts Catalog 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 16 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT L. Interchangeability and Intermixability of Parts**  Refer to Paragraph 2.C., Parts Necessary for Each Airplane, for interchangeability and intermixability information. **M. Software Accomplishment Summary** Not affected.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 17 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 18 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**

BLANK PAGE**2. MATERIAL INFORMATION A. Material - Price and Availability**  The operator can supply the parts and materials shown in Paragraph 2.C., Parts Necessary for Each Airplane. As an alternative, operators can purchase the parts from Boeing Spares. This service bulletin does not show the Boeing price and supply 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 None. 2. Parts and Materials Supplied by the Operator

**Notes Existing Part Number**  **Name QTY**  **Part Number / Specification**  (a) (c) 760SUE1-1 (Boeing p/n 10- 62017-51) or AUTOTHROTTLE COMPUTER 1 760SUE2-5 (Boe- ing p/n 10-62017- 55) (b) (c) 760SUE2-2 (Boeing p/n 10- 62017-52) or (b) (c) 760SUE2-3 (Boeing p/n 10- 62017-53) or (b) (c) 760SUE2-4 (Boeing p/n 10- 62017-54) (a) General Electric Co SB 760SUE-22-1268 changes Autothrottle Computer part number 760SUE1-1 to part number 760SUE2-2.(b) You can get the new part by reworking the existing part as given in General Electric Co SB 760SUE22-1303. (c) GE Aviation Systems LLC (35351), 3290 Patterson Avenue SE, Grand Rapids, MI 49512

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 19 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**3. Parts Modified and Reidentified

**Notes New Part Number**  **Name QTY**  **Existing Part Number** 760SUE2-5 (Boeing p/n 10- 62017-55) AUTOTHROTTLE COMPUTER 1 760SUE1-1 (Boeing p/n 10- 62017-51) or 760SUE2-2 (Boeing p/n 10- 62017-52) or 760SUE2-3 (Boeing p/n 10- 62017-53) or 760SUE2-4 (Boeing p/n 10- 62017-54) 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 20 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT 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. 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. Unless shown differently, these dimensions and tolerances are used: – Linear dimensions are in inches – Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or minus 0.03 inch – Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch – Angular tolerance is plus or minus 2 degrees – Hole dimensions for standard solid rivets and fasteners are in Structural Repair Manual (SRM) Chapter 51 – Torque Values: — Values for structural fasteners are given in 737 Structural Repair Manual, Chapter 51. — Values for airframe maintenance tasks are included in Chapter 20 of 737 Airplane Maintenance Manual (AMM). — Values for electrical maintenance tasks are included in Chapter 20 of Standard Wiring Practices Manual (SWPM). — Values for engine maintenance tasks are included in Chapter 70 of 737 Airplane Maintenance Manual (AMM). — Non-standard torque values for maintenance tasks are included in the applicable installation step.

4. 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. 5. If it is necessary to remove more parts for access, you can remove those parts. If you can get access without removing identified parts, it is not necessary to remove all of the identified parts. Jacking and shoring limitations must be observed. 6. If shading is used, shaded areas in Figures are to separate the non-critical and non-authoritative information from the critical and authoritative information. 7. The compliance times for the actions in Paragraph 3.B., WORK INSTRUCTIONS are in Paragraph 1.E., Compliance.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 21 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT B. WORK INSTRUCTIONS**  1. Get access to the main electronics compartment and remove the Autothrottle Computer p/n 760SUE1-1 or 760SUE2-2 or 760SUE2-3 or 760SUE2-4 or 10-62017-51 or 10-62017-52 or 10-62017-53 or 10-62017-54 from the E1-1 electronics shelf. Refer to 737-600/700/800/900 AMM 22-31-10 as an accepted procedure. 2. Install a new or changed Autothrottle Computer p/n 760SUE2-5 at the E1-1 electronics shelf. Refer to 737-600/700/800/900 AMM 22-31-10 as an accepted procedure. **NOTE:** You can get the new part by reworking the existing part as given in General Electric Co SB 760SUE-22-1303. 3. Do the operational test for the Autothrottle System. Refer to 737-600/700/800/900 AMM 22-31-00 as an accepted procedure. 4. Put the airplane back to a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: November 22, 2013 737-22A1215 22 of 22 **BOEING SERVICE BULLETIN 737-22A1215 ALERT**  **ALERT**