### Commercial **Airplanes** 

# 757 Service Bulletin **ALERT Number: 757-53A0099**  Original Issue: September 18, 2014 ATA System: 5363 **SUBJECT:** FUSELAGE - Section 43 and 46 - Structure - Inspection for Cracks in Fuselage Frames at Stringer S-24 and S-25, Left and Right 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 © 2014 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 Unpublished Work.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Issue: September 18, 2014 757-53A0099 1 of 70 2.0Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 2 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**

BLANK PAGE**Table of Contents** Summary...................................................... 5 1. PLANNING INFORMATION........................................ 9 A. Effectivity................................................ 9 1. Airplanes............................................. 9 2. Spares Affected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 B. Concurrent Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 C. Reason. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 D. Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 F. Approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 G. Manpower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 H. Weight and Balance Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 I. Electrical Load Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 J. References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 1. Existing Data:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2. Data Supplied with this Service Bulletin:. . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3. Installation Drawings Used in the Preparation of this Service Bulletin:. . . . . . . . . . . 25 K. Publications Affected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 L. Interchangeability and Intermixability of Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 25 M. Software Accomplishment Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2. MATERIAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 B. Industry Support Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 C. Parts Necessary for Each Airplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 1. Kits/Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2. Parts and Materials Supplied by the Operator. . . . . . . . . . . . . . . . . . . . . . . . 27 3. Parts Modified and Reidentified. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4. Parts Removed and Not Replaced. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 D. Parts Necessary to Change Spares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 F. Special Tooling Necessary to do this Service Bulletin. . . . . . . . . . . . . . . . . . . . . . . 27 3. ACCOMPLISHMENT INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 A. GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 B. WORK INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 FIGURE 1: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 FIGURE 2: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS - SECTION 43 [Group 1-2, 5-6]. . . . . . . . . . . . . . . . . . . . . . . 59 APPENDIX A: SCOPE OF INSPECTION [Group 1]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 APPENDIX B: SCOPE OF INSPECTION [Group 2]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 APPENDIX C: SCOPE OF INSPECTION [Group 3]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 APPENDIX D: SCOPE OF INSPECTION [Group 4]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 APPENDIX E: SCOPE OF INSPECTION [Group 5]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 APPENDIX F: SCOPE OF INSPECTION [Group 6]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 APPENDIX G: SCOPE OF INSPECTION [Group 7]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 3 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 4 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**

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### Commercial **Airplanes** 

# 757 Service Bulletin **ALERT Summary**  **Number: 757-53A0099** Original Issue: September 18, 2014 ATA System: 5363 **SUBJECT:** FUSELAGE - Section 43 and 46 - Structure - Inspection for Cracks in Fuselage Frames at Stringer S-24 and S-25, Left and Right 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** One operator has reported a 0.60 inch long crack in the fuselage frame at Station (STA) 1440, stringer S-24L. The airplane had 36,890 total flight cycles and 78,922 total flight hours. The crack was discovered while doing unrelated local repairs. An investigation has determined the crack may have been caused by fatigue. The crack initiated in the fuselage frame at the corner radius of the fuselage frame opening for the stringer. It continued to the fastener hole common to fuselage frame, splice plate, and fail safe chord. The crack was not visible because it was completely hidden by the splice plate on one side and the fail safe chord on the other side. If this service bulletin is not done, such fatigue cracking could adversely affect the structural integrity of the airplane. Similar design details and stresses exist at multiple fuselage frame stations in Section 43 and Section 46. This service bulletin gives instructions to inspect for cracks in the fuselage frames at S-24 and S-25, left and right at multiple fuselage frame stations. The fuselage frames have been determined to be structure that is susceptible to Widespread Fatigue Damage (WFD). Boeing Service Related Problem (SRP) 757-53-0429 is related to this service bulletin. 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 No Spares Affected Paragraph 1.E., Compliance and Paragraph 1.F., Approval Yes AD Related Paragraph 1.H., Weight and Balance Changes No Weight and Balance Change

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 5 of 70**Reference Affected**  **Planning Data** Paragraph 1.I., Electrical Load Data No Electrical Load Changed Paragraph 1.K., Publications Affected No 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 No Operator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin No Special Tooling Required

**ACTION** This service bulletin gives instructions to do detailed and High Frequency Eddy Current (HFEC) inspections for cracks in the fuselage frames at the identified Station (STA) locations and Stringer (S) locations. If any crack is found, contact Boeing for repair instructions and do the repair. **EFFECTIVITY** All 757-200, -200CB, -200PF, -300 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. Refer to Paragraph 1.E., Compliance. **INDUSTRY SUPPORT INFORMATION** Boeing warranty remedies are not available for the inspections given in this service bulletin. **MANPOWER** Refer to Paragraph 1.G., Manpower. **MATERIAL INFORMATION** None.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 6 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 7 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 8 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**

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### Commercial **Airplanes** 

# 757 Service Bulletin **ALERT Number: 757-53A0099**  Original Issue: September 18, 2014 ATA System: 5363 **SUBJECT:** FUSELAGE - Section 43 and 46 - Structure - Inspection for Cracks in Fuselage Frames at Stringer S-24 and S-25, Left and Right 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 This service bulletin is for the airplane(s) shown below. Refer to Service Bulletin Index D624N001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
**DESCRIPTION CONFIGURATION**  **GROUP** 757-200 Airplanes with 2 Cargo Doors

- 1 757-200 Airplanes with 3 Cargo Doors

- 2 757-200PF Airplanes (Freighter)

- 3 757-200SF Airplanes (Special Freighter Boeing Supplemental Type Certificate) - 4
757-300 Airplanes with Cargo Net Support Structure Installation (STA 720-STA 740) - 5
757-300 Airplanes without Cargo Net Support Structure Installation (STA 720-STA 740) - 6
757-200CB Airplane (Convertible)

- 7

Airplane Models:

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 9 of 70757-200, 757-200CB, 757-200PF, 757-300**Group Variable Number** 1 NA001 - NA028 1 NA191 - NA199 4 NA201 - NA204 2 NA205 4 NA206 - NA213 2 NA214 4 NA215 - NA236 1 NA237 - NA239 1 NA301 - NA305 2 NA341 - NA352 2 NA391 - NA399 1 NA401 - NA408 1 NA441 - NA447 1 NA501 - NA586 1 NB001 - NB004 1 NB021 - NB023 1 NB036 - NB041 1 NB051 - NB053 1 NB061 - NB073 1 NB079 1 NB131 - NB148 1 NB161 - NB162 1 NB166 - NB168 1 NB201 - NB204 1 NB221 - NB228 1 NB230 1 NB236 1 NB239 1 NB261 - NB267 1 NB291 - NB299 1 NB301 - NB302 1 NB311 - NB312

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 10 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group**  **Variable Number**1 NB321 - NB331 1 NB421 - NB438 1 NB446 1 NB451 - NB454 1 NB501 - NB523 1 NB561 1 NB571 1 NB581 - NB583 1 NC001 - NC033 1 NC041 - NC042 1 NC051 - NC052 1 NC056 - NC062 1 NC066 - NC084 1 NC091 - NC094 1 NC151 1 NC161 3 NC901 - NC951 3 NC971 - NC974 1 ND001 - ND007 1 ND011 - ND059 1 ND111 - ND113 1 ND161 - ND199 1 ND201 - ND203 1 ND221 - ND225 1 ND241 - ND248 1 ND301 - ND322 1 ND401 1 ND891 7 ND895 1 NE001 - NE008 1 NE011 - NE088 1 NE091 - NE094 1 NE141 - NE150

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 11 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group**  **Variable Number**1 NE161 - NE177 1 NE201 - NE204 1 NE301 - NE302 1 NE311 - NE325 1 NJ001 - NJ004 1 NJ031 - NJ032 1 NJ551 - NJ555 5 NL001 - NL002 6 NL006 - NL017 6 NL101 - NL109 6 NL141 6 NL601 - NL616 1 NN001 - NN002 1 NN051 - NN052 1 NP901 - NP904 3 NS601 - NS616 3 NT001 - NT009 1 NT201 - NT202 1 NT231 - NT234 1 NT237 - NT240 1 NT242 1 NT245 - NT248 1 NT281 - NT289 1 NT341 - NT347 1 NT351 - NT360 1 NT371 - NT373 1 NT375 - NT379 1 NT381 - NT386 1 NT401 - NT409 1 NT411 - NT412 1 NT426 - NT427 1 NT431 - NT432 1 NT436 - NT438

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 12 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group**  **Variable Number**1 NT441 - NT442 1 NT446 1 NT701 - NT769 1 NT791 - NT796 1 NT861 - NT862 1 NT881 - NT885 1 NT901 - NT916 1 NT971 - NT985 1 NU031 - NU038 5 NU701 - NU705 5 NU721 - NU728 5 NU731 - NU732 2. Spares Affected None. **B. Concurrent Requirements** None. **C. Reason** One operator has reported a 0.60 inch long crack in the fuselage frame at Station (STA) 1440, stringer S-24L. The airplane had 36,890 total flight cycles and 78,922 total flight hours. The crack was discovered while doing unrelated local repairs. An investigation has determined the crack may have been caused by fatigue. The crack initiated in the fuselage frame at the corner radius of the fuselage frame opening for the stringer. It continued to the fastener hole common to fuselage frame, splice plate, and fail safe chord. The crack was not visible because it was completely hidden by the splice plate on one side and the fail safe chord on the other side. If this service bulletin is not done, such fatigue cracking could adversely affect the structural integrity of the airplane. Similar design details and stresses exist at multiple fuselage frame stations in Section 43 and Section 46. This service bulletin gives instructions to inspect for cracks in the fuselage frames at S-24 and S-25, left and right at multiple fuselage frame stations. The fuselage frames have been determined to be structure that is susceptible to Widespread Fatigue Damage (WFD). Boeing Service Related Problem (SRP) 757-53-0429 is related to this service bulletin.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 13 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT D. Description**  This service bulletin gives instructions to do detailed and High Frequency Eddy Current (HFEC) inspections for cracks in the fuselage frames at the identified Station (STA) locations and Stringer (S) locations. If any crack is found, contact Boeing for repair instructions and do the repair. The work in this service bulletin is done in the maintenance zone(s) given below. **Group 1-2, 4:**
**Affected Maintenance Zones Zone**  **Model** 119, 121, 122, 153, 154, 161, 162, 165, 166 757-200 **Group 3:**
**Affected Maintenance Zones Zone**  **Model** 119, 121, 122, 153, 154, 161, 162, 165, 166 757-200PF **Group 5-6:**
**Affected Maintenance Zones Zone**  **Model** 119, 121, 122, 153, 154, 161, 162, 165, 166 757-300 **Group 7:**
**Affected Maintenance Zones Zone**  **Model** 119, 121, 122, 153, 154, 161, 162, 165, 166 757-200CB **E. Compliance** 1. 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. 2. Do the required actions in accordance with Paragraph 3. Accomplishment Instructions.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 14 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**3. Previously Approved Boeing Frame Repairs Common To Inspection Areas: a. If any Boeing Organization Designation Authorization (ODA) approved repair via FAA Form 8100-9 interferes with the frame inspection areas in this service bulletin, the operator must contact Boeing for alternate inspection instructions and do the alternate inspection instructions before or at the Compliance time outlined in this Service Bulletin (SB). b. If any Boeing ODA approved repair via FAA Form 8100-9 in the frame inspection area does not impede inspections under the frame flange per this SB, the operator shall perform the SB inspections as described in this SB. 4. Any Repair Installed as a Result of Accomplishing this Service Bulletin: a. If any repair is installed as a result of accomplishing this service bulletin, do the post repair requirements for the affected repair area in accordance with the Boeing ODA approved repair. Any remaining requirements of this service bulletin remain fully applicable and must be complied with. 5. When more than one OPTION is given for a CONDITION, do only one of the OPTION numbers. When more than one ACTION is given for a CONDITION number or an OPTION number, do all of the ACTION numbers for that CONDITION number or OPTION number. **Group 1: Table 1: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks**  **Repeat Interval (Not to Exceed)**  **Compliance Time (Whichever Occurs Later)**  **Action Condition** 

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 24,000 total flight cycles Do PART 2: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 36,000 total flight cycles Do PART 3: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 50,000 total flight cycles Do PART 4: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

12,000 Flight

- - Repeat PART 2: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 1: NO CRACK FOUND DURING PART 2 INSPECTIONS Cycles

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 15 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 1:**  **Table 1: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks Repeat Interval**  **(Not to Exceed) Compliance Time**  **(Whichever Occurs Later) Action**  **Condition** 12,000 Flight

- - Repeat PART 3: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 2: NO CRACK FOUND DURING PART 3 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 4: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 3: NO CRACK FOUND DURING PART 4 INSPECTIONS Cycles

- - Before further flight Contact Boeing for repairinstructions and do the repair. CONDITION 4: ANY CRACK FOUND **Group 2: Table 2: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks**  **Repeat Interval (Not to Exceed)**  **Compliance Time (Whichever Occurs Later)**  **Action Condition** 

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 24,000 total flight cycles Do PART 5: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 36,000 total flight cycles Do PART 6: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 50,000 total flight cycles Do PART 7: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

12,000 Flight

- - Repeat PART 5: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 5: NO CRACK FOUND DURING PART 5 INSPECTIONS Cycles

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 16 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 2:**  **Table 2: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks Repeat Interval**  **(Not to Exceed) Compliance Time**  **(Whichever Occurs Later) Action**  **Condition** 12,000 Flight

- - Repeat PART 6: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 6: NO CRACK FOUND DURING PART 6 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 7: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 7: NO CRACK FOUND DURING PART 7 INSPECTIONS Cycles

- - Before further flight Contact Boeing for repairinstructions and do the repair. CONDITION 8: ANY CRACK FOUND **Group 3: Table 3: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks**  **Repeat Interval (Not to Exceed)**  **Compliance Time (Whichever Occurs Later)**  **Action Condition** 

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 36,000 total flight cycles Do PART 8: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 50,000 total flight cycles Do PART 9: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

12,000 Flight

- - Repeat PART 8: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 9: NO CRACK FOUND DURING PART 8 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 9: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 10: NO CRACK FOUND DURINGPART 9 INSPECTIONS Cycles

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 17 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 3:**  **Table 3: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks Repeat Interval**  **(Not to Exceed) Compliance Time**  **(Whichever Occurs Later) Action**  **Condition**

- - Before further flight Contact Boeing for repairinstructions and do the repair. CONDITION 11: ANY CRACK FOUND **Group 4: Table 4: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks**  **Repeat Interval (Not to Exceed)**  **Compliance Time (Whichever Occurs Later)**  **Action Condition** 

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 36,000 total flight cycles Do PART 10: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 50,000 total flight cycles Do PART 11: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

12,000 Flight

- - Repeat PART 10: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 12: NO CRACK FOUND DURINGPART 10 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 11: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 13: NO CRACK FOUND DURINGPART 11 INSPECTIONS Cycles

- - Before further flight Contact Boeing for repairinstructions and do the repair. CONDITION 14: ANY CRACK FOUND

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 18 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 5:**  **Table 5: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks Repeat Interval**  **(Not to Exceed) Compliance Time**  **(Whichever Occurs Later) Action**  **Condition**

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 24,000 total flight cycles Do PART 12: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 36,000 total flight cycles Do PART 13: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 50,000 total flight cycles Do PART 14: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

12,000 Flight

- - Repeat PART 12: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 15: NO CRACK FOUND DURINGPART 12 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 13: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 16: NO CRACK FOUND DURINGPART 13 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 14: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 17: NO CRACK FOUND DURINGPART 14 INSPECTIONS Cycles

- - Before further flight Contact Boeing for repairinstructions and do the repair. CONDITION 18: ANY CRACK FOUND

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 19 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 6:**  **Table 6: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks Repeat Interval**  **(Not to Exceed) Compliance Time**  **(Whichever Occurs Later) Action**  **Condition**

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 24,000 total flight cycles Do PART 15: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 36,000 total flight cycles Do PART 16: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 50,000 total flight cycles Do PART 17: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

12,000 Flight

- - Repeat PART 15: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 19: NO CRACK FOUND DURINGPART 15 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 16: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 20: NO CRACK FOUND DURINGPART 16 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 17: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 21: NO CRACK FOUND DURINGPART 17 INSPECTIONS Cycles

- - Before further flight Contact Boeing for repairinstructions and do the repair. CONDITION 22: ANY CRACK FOUND

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 20 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 7:**  **Table 7: Fuselage Frames - Detailed and High Frequency Eddy Current (HFEC) Inspections for Cracks Repeat Interval**  **(Not to Exceed) Compliance Time**  **(Whichever Occurs Later) Action**  **Condition**

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 36,000 total flight cycles Do PART 18: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

- Within 6,000 flight cycles after the original issue dateof this service bulletin Before 50,000 total flight cycles Do PART 19: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDYCURRENT (HFEC) INSPECTIONS for cracks. All Airplanes

12,000 Flight

- - Repeat PART 18: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 23: NO CRACK FOUND DURINGPART 18 INSPECTIONS Cycles

12,000 Flight

- - Repeat PART 19: FUSE-LAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. CONDITION 24: NO CRACK FOUND DURINGPART 19 INSPECTIONS Cycles

- - Before further flight Contact Boeing for repairinstructions and do the repair. CONDITION 25: ANY CRACK FOUND **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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 21 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT G. Manpower**  The table below shows an estimate of the task hours necessary to do this inspection 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. **Group 1: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 5.75 (a) 23.00 (a) 4 Part 1 (a) 2.25 2.25 1 Part 2 3.75 15.00 4 Part 3 4.90 19.60 4 Part 4 5.75 23.00 4 Part 20 22.40 82.85 TOTAL FOR EACH AIRPLANE (a) Refer to Work Instructions, Paragraph 3.B., Part 1 for additional open access information. More task hours will be required at these locations. **Group 2: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 4.65 (a) 18.60 (a) 4 Part 1 (a) 2.25 2.25 1 Part 5 4.90 19.60 4 Part 6 4.50 9.00 2 Part 7 4.65 18.60 4 Part 20 20.95 68.05 TOTAL FOR EACH AIRPLANE (a) Refer to Work Instructions, Paragraph 3.B., Part 1 for additional open access information. More task hours will be required at these locations. **Group 3: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 4.75 (a) 19.00 (a) 4 Part 1 (a)

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 22 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 3:**  **Elapsed Hours Task Hours**  **Number of Persons Task**  5.05 20.20 4 Part 8 3.40 13.60 4 Part 9 4.75 19.00 4 Part 20 17.95 71.80 TOTAL FOR EACH AIRPLANE (a) Refer to Work Instructions, Paragraph 3.B., Part 1 for additional open access information. More task hours will be required at these locations. **Group 4: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 4.75 (a) 19.00 (a) 4 Part 1 (a) 6.55 26.20 4 Part 10 3.00 3.00 1 Part 11 4.75 19.00 4 Part 20 19.05 67.20 TOTAL FOR EACH AIRPLANE (a) Refer to Work Instructions, Paragraph 3.B., Part 1 for additional open access information. More task hours will be required at these locations. **Group 5: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 5.50 (a) 22.00 (a) 4 Part 1 (a) 1.25 1.25 1 Part 12 3.95 15.80 4 Part 13 4.50 18.00 4 Part 14 5.50 22.00 4 Part 20 20.70 79.05 TOTAL FOR EACH AIRPLANE (a) Refer to Work Instructions, Paragraph 3.B., Part 1 for additional open access information. More task hours will be required at these locations. **Group 6: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 5.50 (a) 22.00 (a) 4 Part 1 (a) 2.25 2.25 1 Part 15 3.95 15.80 4 Part 16

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 23 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 6:**  **Elapsed Hours Task Hours**  **Number of Persons Task**  4.50 18.00 4 Part 17 5.50 22.00 4 Part 20 21.70 80.05 TOTAL FOR EACH AIRPLANE (a) Refer to Work Instructions, Paragraph 3.B., Part 1 for additional open access information. More task hours will be required at these locations. **Group 7: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 5.10 (a) 20.40 (a) 4 Part 1 (a) 5.25 21.00 4 Part 18 5.25 10.50 2 Part 19 5.10 20.40 4 Part 20 20.70 72.30 TOTAL FOR EACH AIRPLANE (a) Refer to Work Instructions, Paragraph 3.B., Part 1 for additional open access information. More task hours will be required at these locations. **H. Weight and Balance Changes** None. **I. Electrical Load Data** Not changed. **J. References** 1. Existing Data: a. Boeing Service Letter 757-SL-51-022 b. Boeing Service Related Problem (SRP) 757-53-0429 c. Service Bulletin Index D624N001 d. 757 Aircraft Maintenance Manual (AMM) 06-41-00, 25-50-02, 25-50-07 e. 757 Non-Destructive Testing (NDT) Manual Part 6, 51-00-01, Part 6, 51-00-19 f. 757-200 Structural Repair Manual (SRM) 53-30-07, 53-60-07 g. 757-200CB Structural Repair Manual (SRM) 53-30-07, 53-60-07

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 24 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**h. 757-200PF Structural Repair Manual (SRM) 53-30-07, 53-60-07 i. 757-300 Structural Repair Manual (SRM) 53-30-07, 53-60-07 j. Multi Operator Message, MOM-MOM-13-0823-01B 2. Data Supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin:
**Title Drawing Number**  Frame Instl Body Station 1440 146N1013 Frame Detail - Body Station 1200 - 1440 146N1028 Net Support Structure Instl - Fwd Cargo Compartment 451N5130 The table above lists applicable drawings used to prepare this service bulletin. The drawings are not necessary to make the specified changes, and are not supplied with this service bulletin. The drawings may not be applicable to all airplane configurations or operators. **K. Publications Affected** 1. Publications: None. 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 affects FCS but no new DTIs are necessary. **L. Interchangeability and Intermixability of Parts** Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts. **M. Software Accomplishment Summary** Not affected.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 25 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 26 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**

BLANK PAGE**2. MATERIAL INFORMATION A. Material - Price and Availability**  None. **B. Industry Support Information** Boeing warranty remedies are not available for the inspections given in this service bulletin. **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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 27 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 28 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**

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. 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 757 Structural Repair Manual, Chapter 51. — Values for airframe maintenance tasks are included in Chapter 20 of 757 Airplane Maintenance Manual (AMM). — Values for electrical maintenance tasks are included in Chapter 20 of Standard Wiring Practices Manual (SWPM). — Non-standard torque values for maintenance tasks are included in the applicable installation step.
4. Use the approved fastener, process and material substitutions in accordance with 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. 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.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 29 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**7. Boeing Service Letter 757-SL-51-022, Damage Reporting and Repair Plan/Design Guidelines, is an acceptable procedure to request information from Boeing for additional structural repair instructions. The Service Letter describes what information must be provided to Boeing before a structural repair can be provided. 8. Refer to APPENDIX A to APPENDIX G for Scope of Inspection. The diagrams are provided as aids only. Information contained in Paragraph 1.E., Compliance is the primary source for compliance times. Information in Paragraph 3.B., Work Instructions is the primary source for tasks required for compliance. 9. The instructions in Paragraph 3.B., Work Instructions and the figures can include operation of tools or test equipment. Boeing Engineering Tool Drawings, the Illustrated Tool and Equipment Manual, and the Special Tool and Ground Handling Drawing Index contain data on versions of the tools or test equipment that you can use. It is permitted to use replaced tools. It is not permitted to use superseded tools. 10. 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. 11. Where the work instructions include installation of a kept part, a new or serviceable part with the same part number can be installed as an alternative to the kept part. 12. If shading is used, shaded areas in Figures are to separate the non-critical and non-authoritative information from the critical and authoritative information. 13. Some steps in the Work Instructions are identified as Required for Compliance (RC). If this service bulletin is mandated by an Airworthiness Directive (AD), then the steps identified as RC must be done to comply with the AD. Alternative procedures for steps not identified with RC can be used if the RC steps can still be done as specified, and the airplane can be put back in a serviceable condition. An Alternative Method of Compliance (AMOC) is not necessary for deviations to steps that are not identified as RC. 14. Refer to Multi Operator Message, MOM-MOM-13-0823-01B, for information on the Retention of Failed/Discrepant Part for Boeing Evaluation. It is requested that an operator or repair station retain any failed or discrepant parts for possible examination or analysis by Boeing when doing this Service Bulletin. 15. Previously Approved Boeing Frame Repairs Common To Inspection Areas: — If any Boeing Organization Designation Authorization (ODA) approved repair via FAA Form 8100-9 interferes with the frame inspection areas in this service bulletin, the operator must contact Boeing for alternate inspection instructions and do the alternate inspection instructions before or at the Compliance time outlined in this Service Bulletin (SB). — If any Boeing ODA approved repair via FAA Form 8100-9 in the frame inspection area does not impede inspections under the frame flange per this SB, the operator shall perform the SB inspections as described in this SB.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 30 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**16. Any Repair Installed as a Result of Accomplishing this Service Bulletin: – If any repair is installed as a result of accomplishing this service bulletin, do the post repair requirements for the affected repair area in accordance with the Boeing ODA approved repair. Any remaining requirements of this service bulletin remain fully applicable and must be complied with. 17. The compliance times for the actions in Paragraph 3.B., WORK INSTRUCTIONS are in Paragraph 1.E., Compliance. 18. When more than one OPTION is given for a CONDITION, do only one of the OPTION numbers. When more than one ACTION is given for a CONDITION number or an OPTION number, do all of the ACTION numbers for that CONDITION number or OPTION number. **B. WORK INSTRUCTIONS The table below defines the PART requirements by Group.** 
**PART Group**  1, 2, 3, 4, 20 1 1, 5, 6, 7, 20 2 1, 8, 9, 20 3 1, 10, 11, 20 4 1, 12, 13, 14, 20 5 1, 15, 16, 17, 20 6 1, 18, 19, 20 7 **Group 1:** 1. Do PART 1: OPEN ACCESS. 2. RC - Do PART 2: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 3. RC - Do PART 3: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 4. RC - Do PART 4: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 5. RC - Based upon the detailed and HFEC inspection results from accomplishing PART 2, PART 3, or PART 4, do the following: a. CONDITION 1: NO CRACK FOUND DURING PART 2 INSPECTIONS (1) RC - Repeat PART 2: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 31 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**b. CONDITION 2: NO CRACK FOUND DURING PART 3 INSPECTIONS (1) RC - Repeat PART 3: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. c. CONDITION 3: NO CRACK FOUND DURING PART 4 INSPECTIONS (1) RC - Repeat PART 4: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. d. CONDITION 4 - ANY CRACK FOUND (1) RC - Contact Boeing for repair instructions and do the repair. 6. Do PART 20: CLOSE ACCESS. **Group 2:** 1. Do PART 1: OPEN ACCESS. 2. RC - Do PART 5: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 3. RC - Do PART 6: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 4. RC - Do PART 7: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 5. RC - Based upon the detailed and HFEC inspection results from accomplishing PART 5, PART 6, or PART 7, do the following: a. CONDITION 5: NO CRACK FOUND DURING PART 5 INSPECTIONS (1) RC - Repeat PART 5: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. b. CONDITION 6: NO CRACK FOUND DURING PART 6 INSPECTIONS (1) RC - Repeat PART 6: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. c. CONDITION 7: NO CRACK FOUND DURING PART 7 INSPECTIONS (1) RC - Repeat PART 7: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. d. CONDITION 8 - ANY CRACK FOUND (1) RC - Contact Boeing for repair instructions and do the repair. 6. Do PART 20: CLOSE ACCESS.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 32 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 3:**  1. Do PART 1: OPEN ACCESS. 2. RC - Do PART 8: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 3. RC - Do PART 9: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 4. RC - Based upon the detailed and HFEC inspection results from accomplishing PART 8 or PART 9, do the following: a. CONDITION 9: NO CRACK FOUND DURING PART 8 INSPECTIONS (1) RC - Repeat PART 8: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. b. CONDITION 10: NO CRACK FOUND DURING PART 9 INSPECTIONS (1) RC - Repeat PART 9: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. c. CONDITION 11 - ANY CRACK FOUND (1) RC - Contact Boeing for repair instructions and do the repair. 5. Do PART 20: CLOSE ACCESS. **Group 4:** 1. Do PART 1: OPEN ACCESS. 2. RC - Do PART 10: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 3. RC - Do PART 11: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 4. RC - Based upon the inspection results from accomplishing PART 10 or PART 11, do the following: a. CONDITION 12: NO CRACK FOUND DURING PART 10 INSPECTIONS (1) RC - Repeat PART 10: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. b. CONDITION 13: NO CRACK FOUND DURING PART 11 INSPECTIONS (1) RC - Repeat PART 11: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 33 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**c. CONDITION 14 - ANY CRACK FOUND (1) RC - Contact Boeing for repair instructions and do the repair. 5. Do PART 20: CLOSE ACCESS. **Group 5:** 1. Do PART 1: OPEN ACCESS. 2. RC - Do PART 12: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 3. RC - Do PART 13: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 4. RC - Do PART 14: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 5. RC - Based upon the inspection results from accomplishing PART 12, PART 13, or PART 14, do the following: a. CONDITION 15: NO CRACK FOUND DURING PART 12 INSPECTIONS (1) RC - Repeat PART 12: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. b. CONDITION 16: NO CRACK FOUND DURING PART 13 INSPECTIONS (1) RC - Repeat PART 13: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. c. CONDITION 17: NO CRACK FOUND DURING PART 14 INSPECTIONS (1) RC - Repeat PART 14: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. d. CONDITION 18 - ANY CRACK FOUND (1) RC - Contact Boeing for repair instructions and do the repair. 6. Do PART 20: CLOSE ACCESS. **Group 6:** 1. Do PART 1: OPEN ACCESS. 2. RC - Do PART 15: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 3. RC - Do PART 16: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 34 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**4. RC - Do PART 17: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 5. RC - Based upon the inspection results from accomplishing PART 15, PART 16, or PART 17, do the following: a. CONDITION 19: NO CRACK FOUND DURING PART 15 INSPECTIONS (1) RC - Repeat PART 15: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. b. CONDITION 20: NO CRACK FOUND DURING PART 16 INSPECTIONS (1) RC - Repeat PART 16: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. c. CONDITION 21: NO CRACK FOUND DURING PART 17 INSPECTIONS (1) RC - Repeat PART 17: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. d. CONDITION 22 - ANY CRACK FOUND (1) RC - Contact Boeing for repair instructions and do the repair. 6. Do PART 20: CLOSE ACCESS. **Group 7:** 1. Do PART 1: OPEN ACCESS. 2. RC - Do PART 18: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 3. RC - Do PART 19: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. 4. RC - Based upon the inspection results from accomplishing PART 18 or PART 19, do the following: a. CONDITION 23: NO CRACK FOUND DURING PART 18 INSPECTIONS (1) RC - Repeat PART 18: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. b. CONDITION 24: NO CRACK FOUND DURING PART 19 INSPECTIONS (1) RC - Repeat PART 19: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS for cracks. c. CONDITION 25 - ANY CRACK FOUND (1) RC - Contact Boeing for repair instructions and do the repair.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 35 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**5. Do PART 20: CLOSE ACCESS. **PART 1: OPEN ACCESS** 1. Get access to the fuselage frame inspection areas as follows: a. Remove and keep the cargo compartment sidewall linings. Refer to 757 AMM 25-50-02 as an accepted procedure. b. Remove and keep the cargo compartment insulation. Refer to 757 AMM 25-50-07 as an accepted procedure. c. Open Main Equipment Center (MEC) access door 119BL. Refer to 757 AMM 06-41-00 as an accepted procedure. d. An inquiry was done with an operator to obtain additional access information. The results indicate that operators should consider planning for additional work and time when gaining access to the following areas:
**Access Issue Threshold**  **(Total Flight Cycles) Location**  **Group**

Ducts and Hoses 36,000 Right Side, STA 1660 to STA 1701 1-2, 4-7 Electrical Wire Bundles/Ducts 50,000 Left Side, STA 500 1-3, 5-7 Avionics Rack/Equipment 50,000 Right Side, STA 440 4 P36 Electrical Panel 50,000 Right Side, STA 500 to STA 520 1-2, 4 E6 Aft Equipment Rack (a) 50,000 Right Side, STA 1480 1,3, 5-7 Ducts and Hoses 50,000 Right Side, STA 1660 to STA 1701 3 (a) Depending on customer configuration, the E6 Aft Equipment Rack may not be installed at this location. **Group 1: PART 2: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS** 1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 560, S-25L Fuselage Frame Inspect Compartment, Left Side STA 580, S-25L STA 600, S-25L

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 36 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 1:**  **PART 3: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 640, S-25L Fuselage Frame Inspect Compartment, Left Side STA 660, S-25L STA 680, S-25L STA 700, S-25L STA 720, S-25L Aft Cargo Compartment, Left Side 1 STA 1360, S-24L STA 1380, S-24L STA 1400, S-24L STA 1420, S-24L STA 1440, S-24L STA 1460, S-24L STA 1480, S-24L Bulk Cargo Compartment, Left Side 1 STA 1500, S-24L Area Aft of Bulk Cargo Compartment, Left Side 1 STA 1661, S-24L Forward Cargo 1 STA 660, S-25R Compartment, Right Side STA 680, S-25R STA 700, S-25R STA 720, S-25R Area Aft of Bulk Cargo Compartment, Right Side 1 STA 1661, S-24R

2. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 2 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 620, S-25L Fuselage Frame Inspect Compartment, Left Side

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 37 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 1:**  **PART 4: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Main Equipment Center, Left Side 1 STA 500, S-25L Fuselage Frame Inspect Forward Cargo 1 STA 520, S-25L Compartment, Left Side STA 540, S-25L STA 740, S-25L STA 760, S-25L STA 780, S-25L Bulk Cargo Compartment, Left Side 1 STA 1520, S-24L STA 1540, S-24L STA 1560, S-24L STA 1580, S-24L STA 1600, S-24L STA 1620, S-24L Main Equipment Center, Right Side 1 STA 480, S-25R STA 500, S-25R Forward Cargo 1 STA 520, S-25R Compartment, Right Side STA 740, S-25R STA 760, S-25R STA 780, S-25R Aft Cargo Compartment, Right Side 1 STA 1480, S-24R Bulk Cargo Compartment, Right Side 1 STA 1500, S-24R STA 1520, S-24R STA 1540, S-24R STA 1560, S-24R STA 1580, S-24R STA 1600, S-24R STA 1620, S-24R

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 38 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 2:**  **PART 5: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 560, S-25L Fuselage Frame Inspect Compartment, Left Side STA 580, S-25L STA 600, S-25L

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 39 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 2:**  **PART 6: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 640, S-25L Fuselage Frame Inspect Compartment, Left Side STA 660, S-25L STA 680, S-25L STA 700, S-25L STA 720, S-25L Aft Cargo Compartment, Left Side 1 STA 1360, S-24L STA 1380, S-24L STA 1400, S-24L STA 1420, S-24L STA 1440, S-24L STA 1460, S-24L STA 1480, S-24L Bulk Cargo Compartment, Left Side 1 STA 1500, S-24L STA 1520, S-24L STA 1540, S-24L STA 1560, S-24L STA 1580, S-24L STA 1600, S-24L STA 1620, S-24L Area Aft of Bulk Cargo Compartment, Left Side 1 STA 1661, S-24L Forward Cargo 1 STA 660, S-25R Compartment, Right Side STA 680, S-25R STA 700, S-25R STA 720, S-25R Area Aft of Bulk Cargo Compartment, Right Side 1 STA 1661, S-24R

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 40 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**2. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 2 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 620, S-25L Fuselage Frame Inspect Compartment, Left Side **Group 2: PART 7: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS** 1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Main Equipment Center, Left Side 1 STA 500, S-25L Fuselage Frame Inspect Forward Cargo 1 STA 520, S-25L Compartment, Left Side STA 540, S-25L STA 740, S-25L STA 760, S-25L STA 780, S-25L Main Equipment Center, Right Side 1 STA 480, S-25R STA 500, S-25R Forward Cargo 1 STA 520, S-25R Compartment, Right Side STA 740, S-25R STA 760, S-25R STA 780, S-25R

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 41 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 3:**  **PART 8: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Main Equipment Center, Left Side 1 STA 500, S-25L Fuselage Frame Inspect Forward Cargo 1 STA 520, S-25L Compartment, Left Side STA 540, S-25L STA 560, S-25L STA 580, S-25L STA 600, S-25L STA 660, S-25L STA 680, S-25L STA 700, S-25L STA 720, S-25L STA 740, S-25L STA 760, S-25L Aft Cargo Compartment, Left Side 1 STA 1360, S-24L STA 1380, S-24L STA 1400, S-24L STA 1420, S-24L STA 1440, S-24L STA 1460, S-24L STA 1480, S-24L Bulk Cargo Compartment, Left Side 1 STA 1500, S-24L STA 1520, S-24L Forward Cargo 1 STA 660, S-25R Compartment, Right Side STA 680, S-25R STA 700, S-25R STA 720, S-25R STA 740, S-25R STA 760, S-25R

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 42 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 3:**  **PART 9: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Bulk Cargo Compartment, Left Side 1 STA 1540, S-24L Fuselage Frame Inspect STA 1560, S-24L STA 1580, S-24L STA 1600, S-24L STA 1620, S-24L Area Aft of Bulk Cargo Compartment, Left Side 1 STA 1661, S-24L STA 1701, S-24L Aft Cargo Compartment, Right Side 1 STA 1480, S-24R Bulk Cargo Compartment, Right Side 1 STA 1500, S-24R STA 1520, S-24R STA 1540, S-24R STA 1560, S-24R STA 1580, S-24R STA 1600, S-24R STA 1620, S-24R Area Aft of Bulk Cargo Compartment, Right Side 1 STA 1661, S-24R STA 1701, S-24R

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 43 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 4:**  **PART 10: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 520, S-25L Fuselage Frame Inspect Compartment, Left Side STA 540, S-25L STA 560, S-25L STA 580, S-25L STA 600, S-25L STA 660, S-25L STA 680, S-25L STA 700, S-25L STA 720, S-25L STA 740, S-25L STA 760, S-25L STA 780, S-25L Aft Cargo Compartment, Left Side 1 STA 1360, S-24L STA 1380, S-24L STA 1400, S-24L STA 1420, S-24L STA 1440, S-24L STA 1460, S-24L STA 1480, S-24L Bulk Cargo Compartment, Left Side 1 STA 1500, S-24L STA 1520, S-24L STA 1540, S-24L STA 1560, S-24L STA 1580, S-24L STA 1600, S-24L STA 1620, S-24L Area Aft of Bulk Cargo Compartment, Left Side 1 STA 1661, S-24L

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 44 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Location**  **Qty Station (STA) and Stringer (S)**  **Location Name**  **Task** STA 660, S-25R Forward Cargo Compartment, Right Side 1 STA 680, S-25R STA 700, S-25R STA 720, S-25R STA 740, S-25R STA 760, S-25R STA 780, S-25R Area Aft of Bulk Cargo Compartment, Right Side 1 STA 1661, S-24R

**Group 4: PART 11: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS** 1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Main Equipment Center, Right Side 1 STA 440, S-25R Fuselage Frame Inspect STA 480, S-25R STA 500, S-25R Forward Cargo 1 STA 520, S-25R Compartment, Right Side **Group 5: PART 12: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS** 1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 560, S-25L Fuselage Frame Inspect Compartment, Left Side STA 580, S-25L STA 600, S-25L

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 45 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 5:**  **PART 13: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 640, S-25L Fuselage Frame Inspect Compartment, Left Side STA 660, S-25L STA 680, S-25L STA 700, S-25L Aft Cargo Compartment, Left Side 1 STA 1360, S-24L STA 1380, S-24L STA 1400, S-24L STA 1420, S-24L STA 1440, S-24L STA 1460, S-24L STA 1480, S-24L Bulk Cargo Compartment, Left Side 1 STA 1500, S-24L STA 1520, S-24L Area Aft of Bulk Cargo Compartment, Left Side 1 STA 1661, S-24L Forward Cargo 1 STA 660, S-25R Compartment, Right Side STA 680, S-25R STA 700, S-25R Area Aft of Bulk Cargo Compartment, Right Side 1 STA 1661, S-24R

2. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 2 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 620, S-25L Fuselage Frame Inspect Compartment, Left Side STA 720, S-25L Forward Cargo 1 STA 720, S-25R Compartment, Right Side

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 46 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 5:**  **PART 14: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Main Equipment Center, Left Side 1 STA 500, S-25L Fuselage Frame Inspect Forward Cargo 1 STA 520, S-25L Compartment, Left Side STA 540, S-25L STA 740, S-25L STA 760, S-25L STA 780, S-25L STA 780+20, S-25L Bulk Cargo Compartment, Left Side 1 STA 1540, S-24L STA 1560, S-24L STA 1580, S-24L STA 1600, S-24L STA 1620, S-24L Forward Cargo 1 STA 740, S-25R Compartment, Right Side STA 760, S-25R STA 780, S-25R STA 780+20, S-25R Aft Cargo Compartment, Right Side 1 STA 1480, S-24R Bulk Cargo Compartment, Right Side 1 STA 1500, S-24R STA 1520, S-24R STA 1540, S-24R STA 1560, S-24R STA 1580, S-24R STA 1600, S-24R STA 1620, S-24R

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 47 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 6:**  **PART 15: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 560, S-25L Fuselage Frame Inspect Compartment, Left Side STA 580, S-25L STA 600, S-25L

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 48 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 6:**  **PART 16: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 640, S-25L Fuselage Frame Inspect Compartment, Left Side STA 660, S-25L STA 680, S-25L STA 700, S-25L STA 720, S-25L Aft Cargo Compartment, Left Side 1 STA 1360, S-24L STA 1380, S-24L STA 1400, S-24L STA 1420, S-24L STA 1440, S-24L STA 1460, S-24L STA 1480, S-24L Bulk Cargo Compartment, Left Side 1 STA 1500, S-24L STA 1520, S-24L Area Aft of Bulk Cargo Compartment, Left Side 1 STA 1661, S-24L Forward Cargo 1 STA 660, S-25R Compartment, Right Side STA 680, S-25R STA 700, S-25R STA 720, S-25R Area Aft of Bulk Cargo Compartment, Right Side 1 STA 1661, S-24R

2. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 2 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Forward Cargo 1 STA 620, S-25L Fuselage Frame Inspect Compartment, Left Side

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 49 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 6:**  **PART 17: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Main Equipment Center, Left Side 1 STA 500, S-25L Fuselage Frame Inspect Forward Cargo 1 STA 520, S-25L Compartment, Left Side STA 540, S-25L STA 740, S-25L STA 760, S-25L STA 780, S-25L STA 780+20, S-25L Bulk Cargo Compartment, Left Side 1 STA 1540, S-24L STA 1560, S-24L STA 1580, S-24L STA 1600, S-24L STA 1620, S-24L Forward Cargo 1 STA 740, S-25R Compartment, Right Side STA 760, S-25R STA 780, S-25R STA 780+20, S-25R Aft Cargo Compartment, Right Side 1 STA 1480, S-24R Bulk Cargo Compartment, Right Side 1 STA 1500, S-24R STA 1520, S-24R STA 1540, S-24R STA 1560, S-24R STA 1580, S-24R STA 1600, S-24R STA 1620, S-24R

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 50 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Group 7:**  **PART 18: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Main Equipment Center, Left Side 1 STA 500, S-25L Fuselage Frame Inspect Forward Cargo 1 STA 520, S-25L Compartment, Left Side STA 540, S-25L STA 560, S-25L STA 580, S-25L STA 600, S-25L STA 660, S-25L STA 680, S-25L STA 700, S-25L STA 720, S-25L STA 740, S-25L STA 760, S-25L Aft Cargo Compartment, Left Side 1 STA 1360, S-24L STA 1380, S-24L STA 1400, S-24L STA 1420, S-24L STA 1440, S-24L STA 1460, S-24L STA 1480, S-24L Bulk Cargo Compartment, Left Side 1 STA 1500, S-24L Area Aft of Bulk Cargo Compartment, Left Side 1 STA 1661, S-24L Forward Cargo 1 STA 660, S-25R Compartment, Right Side STA 680, S-25R STA 700, S-25R STA 720, S-25R STA 740, S-25R

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 51 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT Location**  **Qty Station (STA) and Stringer (S)**  **Location Name**  **Task**
STA 760, S-25R Area Aft of Bulk Cargo Compartment, Right Side 1 STA 1661, S-24R

**Group 7: PART 19: FUSELAGE FRAMES - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS** 1. RC - Do detailed and HFEC inspections for cracks in the fuselage frame in accordance with FIGURE 1 at the Station (STA) and Stringer (S) locations that follow:
**Location Qty**  **Station (STA) and Stringer (S) Location**  **Name Task**  Bulk Cargo Compartment, Left Side 1 STA 1520, S-24L Fuselage Frame Inspect STA 1540, S-24L STA 1560, S-24L STA 1580, S-24L STA 1600, S-24L STA 1620, S-24L Aft Cargo Compartment, Right Side 1 STA 1480, S-24R Bulk Cargo Compartment, Right Side 1 STA 1500, S-24R STA 1520, S-24R STA 1540, S-24R STA 1560, S-24R STA 1580, S-24R STA 1600, S-24R STA 1620, S-24R
**PART 20: CLOSE ACCESS** 1. Close access to the fuselage frame inspection areas as follows: a. Install kept cargo compartment insulation. Refer to 757 AMM 25-50-07 as an accepted procedure. b. Install kept cargo compartment sidewall linings. Refer to 757 AMM 25-50-02 as an accepted procedure. c. Close Main Equipment Center (MEC) access door 119BL. Refer to 757 AMM 06-41-00 as an accepted procedure.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 52 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**d. Close up any areas that required additional work to gain access. 2. Put the airplane back to a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 53 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT FIGURE 1: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS (SHEET 1 OF 5)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 54 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT FIGURE 1: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS (SHEET 2 OF 5)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 55 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT FIGURE 1: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS (SHEET 3 OF 5)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 56 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT FIGURE 1: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS (SHEET 4 OF 5)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 57 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for this figure.
**More Data Qty**  **Identification Name**  **Task Step**  (a) (b) (c)

- - FUSELAGE FRAME Inspect 1 (a) Do a Detailed and High Frequency Eddy Current (HFEC) for cracks in accordance with 757 NDT Manual Part 6, 51-00-01 or 757 NDT Manual Part 6, 51-00-19. HFEC inspection is to be done around the fasteners and on the fuselage frame along the upper edge of the fail safe chord. (b) For fuselage frame identification in Section 43, refer to 757-200 SRM 53-30-07, 757-200CB SRM 53-30- 07, 757-200PF SRM 53-30-07, 757-300 SRM 53-30-07. (c) For fuselage frame identification in Section 46, refer to 757-200 SRM 53-60-07, 757-200CB SRM 53-60- 07, 757-200PF SRM 53-60-07, 757-300 SRM 53-60-07.

**FIGURE 1: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS**  **(SHEET 5 OF 5)**
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 58 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT This Figure applies only to: Group 1-2, 5-6.** 

**FIGURE 2: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS - SECTION 43**  **(SHEET 1 OF 5)**
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 59 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT FIGURE 2: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS - SECTION 43 (SHEET 2 OF 5)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 60 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT FIGURE 2: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS - SECTION 43 (SHEET 3 OF 5)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 61 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT FIGURE 2: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC)**  **INSPECTIONS - SECTION 43 (SHEET 4 OF 5)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 62 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for this figure.
**More Data Qty**  **Identification Name**  **Task Step**  (a) (b)

- - FUSELAGE FRAME Inspect 1 (a) Do a Detailed and High Frequency Eddy Current (HFEC) for cracks in accordance with 757 NDT Manual Part 6, 51-00-01 or 757 NDT Manual Part 6, 51-00-19. HFEC inspection is to be done around the fasteners, on the fuselage frame along the upper edge of the fail safe chord, and along edge of cargo net support installation fitting. (b) For fuselage frame identification in Section 43, refer to 757-200 SRM 53-30-07, 757-200CB SRM 53-30- 07, 757-200PF SRM 53-30-07, 757-300 SRM 53-30-07.

**FIGURE 2: FUSELAGE FRAME - DETAILED AND HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTIONS - SECTION 43**  **(SHEET 5 OF 5)**
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 63 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT This Appendix applies only to: Group 1.** 

**APPENDIX A: SCOPE OF INSPECTION (SHEET 1 OF 1)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 64 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT This Appendix applies only to: Group 2.** 

**APPENDIX B: SCOPE OF INSPECTION (SHEET 1 OF 1)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 65 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT This Appendix applies only to: Group 3.** 

**APPENDIX C: SCOPE OF INSPECTION (SHEET 1 OF 1)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 66 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT This Appendix applies only to: Group 4.** 

**APPENDIX D: SCOPE OF INSPECTION (SHEET 1 OF 1)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 67 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT This Appendix applies only to: Group 5.** 

**APPENDIX E: SCOPE OF INSPECTION (SHEET 1 OF 1)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 68 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT This Appendix applies only to: Group 6.** 

**APPENDIX F: SCOPE OF INSPECTION (SHEET 1 OF 1)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 69 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT This Appendix applies only to: Group 7.** 

**APPENDIX G: SCOPE OF INSPECTION (SHEET 1 OF 1)** 
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: September 18, 2014 757-53A0099 70 of 70 **BOEING SERVICE BULLETIN 757-53A0099 ALERT**  **ALERT**