# Boeing Alert Service Bulletin 737-53A1382: No revision named - Rights: © The Boeing Company. Filed by the FAA in regulations.gov docket FAA-2019-0670, the docket of AD 2020-02-16. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Boeing Alert Service Bulletin 737-53A1382](https://openairdocs.org/service-documents/boeing/737-53a1382.md) - Title as filed: 737-53A1382-00--RB - BOEING - Pages: 227 - PDF: https://openairdocs.org/files/sha256/bb/29/bb296ea55e6be421081a2726fe2bdb4004709894f5cd44cc6a0fc1ef92e80be4 - Page: https://openairdocs.org/service-documents/boeing/737-53a1382/file/bb296ea55e6b ## Text Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Commercial Airplanes 737 Requirements Bulletin ALERT Number: 737-53A1382 RB Original Issue: May 06, 2019 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Lower Skin at Stringer 14 Fuselage Lap Splice, Inspection 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. 9E991ECCN: Copyright © 2019 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 Unpublished Work.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 Original Issue: May 06, 2019 737-53A1382 RB 1 of 227 3.0 ### Page 2 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 2 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT BLANK PAGE ### Page 3 Table of Contents 1 . E F F E C T I V I T Y ................................................ 7 A. Airplanes ................................................ 7 B . S p a r e s A f f e c t e d ............................................ 9 2. CONCURRENT REQUIREMENTS ..................................... 9 3 . C O M P L I A N C E ................................................ 9 4. APPROVAL ................................................ 6 6 5. ACCOMPLISHMENT INSTRUCTIONS .................................. 6 9 A. General Information ......................................... 6 9 B. Work Instructions ........................................... 7 0 FIGURE 1: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 1, Configuration 1] ................ 1 3 2 FIGURE 2: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 1, Configuration 1] ................ 1 3 4 FIGURE 3: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 2-3, 11, Configuration 1] ............. 1 3 6 FIGURE 4: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 2, Configuration 1] ................ 1 3 8 FIGURE 5: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 4] ......................... 1 4 0 FIGURE 6: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 3, Configuration 1] ................ 1 4 2 FIGURE 7: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 4-5] ........................ 1 4 4 FIGURE 8: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 3, Configuration 1] ................ 1 4 6 FIGURE 9: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTER NAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 6, Configuration 2-3] ............... 1 4 8 FIGURE 10: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 4] ......................... 1 5 0 FIGURE 11: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 6, Configuration 1] ................ 1 5 2 FIGURE 12: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 4-5] ........................ 1 5 4 FIGURE 13: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 7] ......................... 1 5 6 FIGURE 14: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 6, Configuration 2-3] ............... 1 5 8 FIGURE 15: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 8] ......................... 1 6 0 FIGURE 16: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 6, Configuration 1] ................ 1 6 2 FIGURE 17: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 9, Configuration 1; Group 10] . . ........ 1 6 4 FIGURE 18: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 7] ......................... 1 6 6 FIGURE 19: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 10] ......................... 1 6 8 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 3 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 4 FIGURE 20: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 8] ......................... 1 7 0 FIGURE 21: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 1, Configuration 1] ................ 1 7 2 FIGURE 22: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 9, Configuration 1] ................ 1 7 4 FIGURE 23: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 2-3, 11, Configuration 1] ............. 1 7 6 FIGURE 24: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 10] ......................... 1 7 8 FIGURE 25: SECTION 46 - SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 4] ................. 1 8 0 FIGURE 26: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 10] ......................... 1 8 2 FIGURE 27: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 4-5] ........................ 1 8 4 FIGURE 28: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - EXTE RNAL DUAL FREQUENCY EDDY CURRENT INSPECTION [Group 11, Configuration 1] ............... 1 8 6 FIGURE 29: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 6, Configuration 2-3] ............... 1 8 8 FIGURE 30: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 1, Configuration 1] ................ 1 9 0 FIGURE 31: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 6, Configuration 1] ................ 1 9 2 FIGURE 32: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 2, Configuration 1] ................ 1 9 4 FIGURE 33: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 7] ......................... 1 9 6 FIGURE 34: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 3, Configuration 1] ................ 1 9 8 FIGURE 35: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 8] ......................... 2 0 0 FIGURE 36: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 3, Configuration 1] ................ 2 0 2 FIGURE 37: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 9, Configuration 1; Group 10] . . ........ 2 0 4 FIGURE 38: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 4] ......................... 2 0 6 FIGURE 39: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14L - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 10] ......................... 2 0 8 FIGURE 40: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 4-5] ........................ 2 1 0 FIGURE 41: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 6, Configuration 2-3] ............... 2 1 2 FIGURE 42: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 6, Configuration 1] ................ 2 1 4 FIGURE 43: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 7] ......................... 2 1 6 FIGURE 44: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 8] ......................... 2 1 8 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 4 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 5 FIGURE 45: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 9, Configuration 1] ................ 2 2 0 FIGURE 46: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 10] ......................... 2 2 2 FIGURE 47: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 10] ......................... 2 2 4 FIGURE 48: SECTION 46 - SKIN LAP SPLICE AT STRINGER S-14R - OPEN HOLE-HIGH FREQUENCY EDDY CURRENT INSPECTION [Group 11, Configuration 1] ............... 2 2 6 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 5 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 6 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 6 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT BLANK PAGE ### Page 7 Commercial Airplanes 737 Requirements Bulletin ALERT Number: 737-53A1382 RB Original Issue: May 06, 2019 ATA System: 5331 SUBJECT: FUSELAGE - Skin - Lower Skin at Stringer 14 Fuselage Lap Splice, Inspection THIS DOCUMENT 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 DOCUMENT TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE NEW OWNER. THIS IS AN ENHANCED REQUIRED FOR COMPLIANCE DOCUMENT. THE BOEING PROCESSES USED TO CREATE THE SERVICE BULLETIN (SB) AND THE REQUIREMENTS BULLETIN (RB) ENSURE THAT THE INFORMATION BETWEEN "RC START" AND "RC END" IN THE SB ARE IDENTICAL TO THE INFORMATION IN THE SAME SECTIONS (COMPLIANCE, WORK INSTRUCTIONS…) OF THE RB WHICH THE SB REFERS TO AS THE RELATED DOCUMENT. 1. EFFECTIVITY A. Airplanes This bulletin is applicable to 737-200, 737-200C, 737-300, 737-400, 737-500 Airplane(s), line number(s) 924-927, 929-950, 952-974, 976-988, 990-991, 993-2552, 2554-2565 in 11 Group(s). Where the effectivity is presented with hyphens between line numbers, the airplane applicability means "through" and "inclusive", e.g. line numbers 1-9 means line numbers 1 through 9 inclusive. DESCRIPTIONCONFIGURATIONGROUP 737-200 and 737-200C airplanes, line numbers 924 - 1585. Lower skin inspection at S-14L/R Lap Splice between STA 727 and STA 827. -1 Airplanes that have not installed a skin panel replacement in accordance with service bulletin 737-53-1065. 1 Airplanes that have installed a skin panel replacement in accordance with service bulletin 737-53-1065. 2 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 7 of 227 ### Page 8 DESCRIPTIONCONFIGURATIONGROUP 737-300 airplanes, line numbers 1001 - 1953. Lower skin inspection at S-14L/R between STA 727A and STA 827. -2 Airplanes that have not installed a skin panel replacement in accordance with service bulletin 737-53-1168. 1 Airplanes that have installed a skin panel replacement in accordance with service bulletin 737-53-1168. 2 737-300 airplanes, line numbers 2089 - 2495. Lower skin inspection at S-14L between STA 727A and STA 827 and at S-14R between STA 727A and STA 847. -3 Airplanes that have not installed a skin panel replacement in accordance with service bulletin 737-53-1168. 1 Airplanes that have installed a skin panel replacement in accordance with service bulletin 737-53-1168. 2 737-300 airplanes, line numbers 2497 - 2550. Lower skin inspection at S-14L/R between STA 727A and STA 908. -4 737-300 airplanes, line numbers 2554 - 2565. Lower skin inspection at S-14L/R between STA 787 and STA 908. -5 737-400 airplanes, line numbers 1487 - 2496. Lower skin inspection at S-14L between STA 727A and STA 827 and at S-14R between STA 727A and STA 847. -6 Airplanes that have not installed a skin panel replacement between STA 727G and STA 908 in accordance with service bulletin 737-53-1187. 1 Airplanes that have installed a skin panel replacement between STA 727G and STA 908 in accordance with service bulletin 737-53-1187 at or after 53,000 Total Flight Cycles (TFC). 2 Airplanes that have installed a skin panel replacement between STA 727G and STA 908 in accordance with service bulletin 737-53-1187 before 53,000 TFC. 3 737-400 airplanes, line numbers 2501 - 2551. Lower skin inspection at S-14L/R between STA 727A and STA 908. -7 737-400 airplanes, line numbers 2560 - 2564. Lower skin inspection at S-14L/R between STA 727G and STA 908. -8 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 8 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 9 DESCRIPTIONCONFIGURATIONGROUP 737-500 airplanes, line numbers 1718 - 2494. Lower skin inspection at S-14L between STA 727A and STA 827 and S-14R between STA 727A and STA 847. -9 Airplanes that have not installed a skin panel replacement in accordance with service bulletin 737-53-1315 1 Airplanes that have installed a skin panel replacement in accordance with service bulletin 737-53-1315. 2 737-500 airplanes, line numbers 2498 - 2552. Lower skin inspection at S-14L/R between STA 727A and STA 908. -10 737-300 airplanes, line numbers 1955 - 2087. Lower skin inspection S-14L between STA 727A and STA 827 and S-14R between STA 727A and STA 847. -11 Airplanes that have not installed a skin panel replacement in accordance with service bulletin 737-53-1168. 1 Airplanes that have installed a skin panel replacement in accordance with service bulletin 737-53-1168. 2 B. Spares Affected None. 2. CONCURRENT REQUIREMENTS None. 3. COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to Requirements Bulletin 737-53A1382 RB. The Airworthiness Directive will make the compliance tasks and times given in Requirements Bulletin 737-53A1382 RB mandatory. Accomplish the required actions, based on the applicable conditions in Tables 1 through 10, in accordance with the Accomplishment Instructions. 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 or an OPTION do all of the ACTION numbers for that CONDITION or OPTION. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 9 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 10 Airplane Group Compliance Table applicability Applicable Compliance tableAirplane Group Right side inspectionLeft side inspection Table 6Table 2Group 1, Configuration 1 Table 1Table 1Group 1, Configuration 2 Table 6Table 2Group 2, Configuration 1 Table 1Table 1Group 2, Configuration 2 Table 7Table 2Group 3, Configuration 1 Table 1Table 1Group 3, Configuration 2 Table 8Table 3Group 4 Table 9Table 4Group 5 Table 6Table 2Group 6, Configurations 1, 2 and 3 Table 1Table 1Group 6, Configuration 3 Table 6Table 2Group 7 Table 9Table 4Group 8 Table 6Table 2Group 9, Configuration 1 Table 1Table 1Group 9, Configuration 2 Table 10Table 5Group 10 Table 6Table 2Group 11, Configuration 1 Table 1Table 1Group 11, Configuration 2 Group 1-3, Configuration 2; Group 6, Configuration 3; Group 9, 11, Configuration 2: Table 1: Inspection requirements for airplanes that have installed a skin replacement in the areas of S- 14L/R Lap Splice Skin (Left and Right Side) Repeat Interval (Not to Exceed) Compliance TimeActionCondition --No further action required.Group 1: Airplanes that replaced a skin panel in accordance with service bulletin 737- 53-1065 at or after 59,000 Total Flight Cycles (TFC) -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) Group 1: Airplanes that replaced a skin panel in accordance with service bulletin 737- 53-1065 before 59,000 TFC Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 10 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 11 Group 1-3, Configuration 2; Group 6, Configuration 3; Group 9, 11, Configuration 2: Table 1: Inspection requirements for airplanes that have installed a skin replacement in the areas of S- 14L/R Lap Splice Skin (Left and Right Side) Repeat Interval (Not to Exceed) Compliance TimeActionCondition --No further action required.Group 2,3 and 11: Airplanes that replaced a skin panel in accordance with service bulletin 737- 53-1168 at or after 53,000 TFC -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) Group 2,3 and 11: Air- planes that replaced a skin panel in accordance with service bulletin 737- 53-1168 before 53,000 TFC --No further action required.Group 9: Airplanes that replaced a skin panel in accordance with service bulletin 737- 53-1315 at or after 53,000 TFC -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) Group 9: Airplanes that replaced a skin panel in accordance with service bulletin 737- 53-1315 before 53,000 TFC -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) for areas common to the skin panel replacement Group 6: Airplanes that replaced a skin panel in accordance with service bulletin 737- 53-1187 before 53,000 TFC (a) (a) Inspections in accordance with Table 2 and Table 6 are required outside the panel replacement area. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 11 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 12 Group 1-3, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 2: Detailed Inspection, Dual Frequency Eddy Current and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 3,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 53,999 TFC Before 42,000 TFC Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with less than 52,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 2,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 60,999 TFC Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with 52,000 TFC or more, but less than 60,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB Within 1,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 67,499 TFC Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with 60,000 TFC or more, but less than 67,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with 67,000 TFC or more as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Before further flightCONDITION 1CONDITION 1: ACTION 1:ANY REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) (b) -Before further flightCONDITION 1 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row at the unre- paired areas for any crack (b) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 12 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 13 Group 1-3, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 2: Detailed Inspection, Dual Frequency Eddy Current and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 2CONDITION 2: ACTION 1:NO REPAIR FOUND and the inspection area has magnetic or protruding head fasteners installed Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) -Before further flightCONDITION 2 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack at areas that do not have magnetic or protruding head fasteners installed -Before further flightDo the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack CONDITION 3: NO REPAIR FOUND and the inspection area does not have magnetic or pro- truding head fasteners in- stalled -Before further flightCONDITION 4CONDITION 4: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has less than 67,500 TFC Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 3,000 Flight-CONDITION 4 Cycles (a)(c)ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) 2,000 Flight Cycles (a)(d) - 1,000 Flight Cycles (a)(e) - 500 Flight Cycles (a)(f) - Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 13 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 14 Group 1-3, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 2: Detailed Inspection, Dual Frequency Eddy Current and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 5CONDITION 5: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 500 Flight Cycles (a) -CONDITION 5 ACTION 2, OPTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) -Before further flightCONDITION 5 ACTION 2, OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (b)(g) -Before further flightCONDITION 6CONDITION 6: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair -Before further flightCONDITION 6 ACTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (b)(g) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 14 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 15 Group 1-3, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 2: Detailed Inspection, Dual Frequency Eddy Current and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 3,000 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 7: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has less than 67,500 TFC Cycles (a)(c) 2,000 Flight Cycles (a)(d) - 1,000 Flight- Cycles (a)(e) 500 Flight Cycles (a)(f) - 500 Flight Cycles (a) -CONDITION 8 OPTION 1: CONDITION 8: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) -Before further flightCONDITION 8 OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (b)(g) -Before further flightDo the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (b)(g) CONDITION 9: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 15 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 16 Group 1-3, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 2: Detailed Inspection, Dual Frequency Eddy Current and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 10CONDITION 10: ACTION 1:ANY CRACK FOUND during the OPEN HOLE - HFEC INSPECTION Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 10 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 11: NO CRACK FOUND dur- ing the OPEN HOLE - HFEC INSPECTION Flight Cycles -Before further flightCONDITION 12CONDITION 12: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 12 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 16 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 17 Group 1-3, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 2: Detailed Inspection, Dual Frequency Eddy Current and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 13: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE HFEC INSPECTION pre- viously accomplished Flight Cycles (a) Group 1 airplanes - Replacement of a skin panel in accordance with service bulletin 737-53-1065 at or after 59,000 TFC terminates the inspection in the area of the skin replacement. Groups 2, 3 and 11 airplanes - Replacement of a skin panel in accordance with service bulletin 737-53- 1168 at or after 53,000 TFC terminates the inspection in the area of the skin replacement. Group 9 airplanes - Replacement of a skin panel in accordance with service bulletin 737-53-1315 at or after 53,000 terminates the inspection in the area of the skin replacement. (b) It is not required to contact Boeing or do the inspections in the area under the existing repair or modification where one of the following repairs or modifications has been installed: 1) Boeing ODA-approved and consists of 3 or more fastener rows above and below the production lap splices. 2) Published SRM repair and consists of 3 or more fastener rows above and below the production lap splice. 3) In accordance with 737-100/200 SRM 53-30-03, Figure 42, Category A or B repairs only. 4) In accordance with 737-300, -400, -500 SRM 53-00-01, Repairs 30 or 31, Category A or B repairs only. 5) In accordance with either SB 737-53A1177 or SB 737-53A1255. (c) Airplanes with less than 51,000 TFC at the time of the previous external DFEC inspection. (d) Airplanes with 51,000 TFC or more but less than 59,000 TFC at the time of the previous external DFEC inspection. (e) Airplanes with 59,000 TFC or more but less than 66,500 TFC at the time of the previous external DFEC inspection. (f) Airplanes with 66,500 TFC or more at the time of the previous external DFEC inspection. (g) The OPEN HOLE - HFEC inspection is a one-time inspection. It is not required to repeat the OPEN HOLE - HFEC inspection, if it was done at or after 67,500 TFC. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 17 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 18 Group 4: Table 3: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 3,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 53,999 TFC Before 42,000 TFC ACTION 1: Do the external DETAILED INSPECTION between STA 787 and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with less than 52,000 Total Flight Cycles (TFC) as of the original issue date of Require- ments Bulletin 737- 53A1382 RB -Before 56,000 TFCACTION 2: Do the external DETAILED INSPECTION between STA 727A and STA 787 for any re- pair and any magnetic or pro- truding head fasteners in- stalled -Within 2,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 60,999 TFC ACTION 1: Do the external DETAILED INSPECTION between STA 787 and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 52,000 TFC or more, but less than 60,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 2,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 60,999 TFC Before 56,000 TFC ACTION 2: Do the external DETAILED INSPECTION between STA 727A and STA 787 for any re- pair and any magnetic or pro- truding head fasteners in- stalled -Within 1,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 67,499 TFC Do the external DETAILED INSPECTION between STA 727A and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 60,000 TFC or more, but less than 67,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 18 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 19 Group 4: Table 3: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB ACTION 1: Do the external DETAILED INSPECTION between STA 727A and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 67,000 TFC or more as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Before further flightCONDITION 1CONDITION 1: ACTION 1:ANY REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) (a) -Before further flightCONDITION 1 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row at the unre- paired areas for any crack (a) -Before further flightCONDITION 2CONDITION 2: ACTION 1:NO REPAIR FOUND and the inspection area has magnetic or protruding head fasteners installed Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) -Before further flightCONDITION 2 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack at areas that do not have magnetic or protruding head fasteners installed Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 19 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 20 Group 4: Table 3: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightDo the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack CONDITION 3: NO REPAIR FOUND and the inspection area does not have magnetic or pro- truding head fasteners in- stalled -Before further flightCONDITION 4CONDITION 4: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has less than 67,500 TFC Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 3,000 Flight-CONDITION 4 Cycles (b)ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,000 Flight Cycles (c) - 1,000 Flight Cycles (d) - 500 Flight Cycles (e) - Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 20 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 21 Group 4: Table 3: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 5CONDITION 5: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more but less than 70,000 TFC and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 500 Flight Cycles-CONDITION 5 ACTION 2, OPTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) -Before further flightCONDITION 5 ACTION 2, OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(f) -Before further flightCONDITION 6CONDITION 6: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair -Before further flightCONDITION 6 ACTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(f) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 21 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 22 Group 4: Table 3: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 3,000 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 7: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has less than 67,500 TFC Cycles (b) 2,000 Flight Cycles (c) - 1,000 Flight- Cycles (d) 500 Flight- Cycles (e) 500 Flight Cycles-CONDITION 8CONDITION 8: OPTION 1:NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) -Before further flightCONDITION 8 OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(f) -Before further flightDo the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(f) CONDITION 9: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 22 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 23 Group 4: Table 3: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 10CONDITION 10: ACTION 1:ANY CRACK FOUND during the OPEN HOLE - HFEC INSPECTION Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 10 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,500 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 11: NO CRACK FOUND dur- ing the OPEN HOLE - HFEC INSPECTION Cycles -Before further flightCONDITION 12CONDITION 12: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 12 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 23 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 24 Group 4: Table 3: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 13: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE HFEC INSPECTION pre- viously accomplished Flight Cycles (a) It is not required to contact Boeing or do the inspections in the area under the existing repair where one of the following repairs has been installed: 1) Boeing ODA-approved and consists of 3 or more fastener rows above and below the production lap splices. 2) Published SRM repair and consists of 3 or more fastener rows above and below the production lap splice. 3) In accordance with 737-300 SRM 53-00-01, Repairs 30 or 31, Category A or B repairs only. (b) Airplanes with less than 51,000 TFC at the time of the previous external DFEC inspection. (c) Airplanes with 51,000 TFC or more, but less than 59,000 TFC at the time of the previous external DFEC inspection. (d) Airplanes with 59,000 TFC or more, but less than 66,500 TFC at the time of the previous external DFEC inspection. (e) Airplanes with 66,500 TFC or more at the time of the previous external DFEC inspection. (f) The OPEN HOLE - HFEC inspection is a one-time inspection. It is not required to repeat the OPEN HOLE - HFEC inspection, if it was done at or after 67,500 TFC. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 24 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 25 Group 5, 8: Table 4: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 1,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB, but not to ex- ceed 67,499 TFC Before 62,000 TFC Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with less than 67,000 Total Flight Cycles (TFC) as of the original issue date of Require- ments Bulletin 737- 53A1382 RB -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with 67,000 TFC or more as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Before further flightCONDITION 1CONDITION 1: ACTION 1:ANY REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) (a) -Before further flightCONDITION 1 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row at the unre- paired areas for any crack (a) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 25 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 26 Group 5, 8: Table 4: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 2CONDITION 2: ACTION 1:NO REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) and the inspection area has magnetic or protrud- ing head fasteners in- stalled -Before further flightCONDITION 2 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack at areas that do not have magnetic or protruding head fasteners installed -Before further flightDo the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack CONDITION 3: NO REPAIR FOUND and the inspection area does not have magnetic or protruding head fasten- ers installed -Before further flightCONDITION 4CONDITION 4: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has less than 67,500 TFC Contact The Boeing Company for repair instructions and do the repair (b) 1,000 Flight-CONDITION 4 Cycles (c)ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 500 Flight Cycles (d) - Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 26 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 27 Group 5, 8: Table 4: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 5CONDITION 5: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Contact The Boeing Company for repair instructions and do the repair (b) 500 Flight Cycles-CONDITION 5 ACTION 2, OPTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) -Before further flightCONDITION 5 ACTION 2, OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(e) -Before further flightCONDITION 6CONDITION 6: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Contact The Boeing Company for repair instructions and do the repair (b) -Before further flightCONDITION 6 ACTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(e) 1,000 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 7: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has less than 67,500 TFC Cycles (c) 500 Flight Cycles (d) - Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 27 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 28 Group 5, 8: Table 4: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 500 Flight Cycles-CONDITION 8CONDITION 8: OPTION 1:NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) -Before further flightCONDITION 8 OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(e) -Before further flightDo the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(e) CONDITION 9: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished -Before further flightCONDITION 10CONDITION 10: ACTION 1:ANY CRACK FOUND during the OPEN HOLE - HFEC INSPECTION Contact The Boeing Company for repair instructions and do the repair (b) 2,500 Flight-CONDITION 10 CyclesACTION 2: REPEAT DFEC INSPECTION of the lower skin along the lap splice lower fastener row at the unrepaired areas for any crack (a) 2,500 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 11: NO CRACK FOUND dur- ing the OPEN HOLE - HFEC INSPECTION Cycles Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 28 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 29 Group 5, 8: Table 4: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 12CONDITION 12: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously accomplished Contact The Boeing Company for alternative repair instruc- tions and do the repair (b) 2,500 Flight Cycles -CONDITION 12 ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 13: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE HFEC INSPECTION pre- viously accomplished Flight Cycles (a) It is not required to contact Boeing or do the inspections in the area under the existing repair if an installed repair is Boeing ODA-approved and consists of 3 or more fastener rows above and below the production lap splices. (b) The SRM does not have an applicable repair for these airplanes. (c) Airplanes with less than 66,500 TFC at the time of the previous external DFEC inspection. (d) Airplanes with 66,500 TFC or more at the time of the previous external DFEC inspection. (e) The OPEN HOLE - HFEC inspection is a one-time inspection. It is not required to repeat the OPEN HOLE- HFEC inspection, if it was done at or after 67,500 TFC. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 29 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 30 Group 10: Table 5: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 3,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB, but not to ex- ceed 53,999 TFC Before 42,000 TFC ACTION 1: Do the external DETAILED INSPECTION between STA 827 and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with less than 52,000 Total Flight Cycles (TFC) as of the original issue date of Require- ments Bulletin 737- 53A1382 RB Before 56,000 TFCACTION 2: Do the external DETAILED INSPECTION between STA 727A and STA 827 for any re- pair and any magnetic or pro- truding head fasteners in- stalled -Within 2,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 60,999 TFC ACTION 1: Do the external DETAILED INSPECTION between STA 827 and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 52,000 TFC or more, but less than 60,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 2,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 60,999 TFC Before 56,000 TFC ACTION 2: Do the external DETAILED INSPECTION between STA 727A and STA 827 for any re- pair and any magnetic or pro- truding head fasteners in- stalled -Within 1,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 67,499 TFC Do the external DETAILED INSPECTION between STA 727A and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 60,000 TFC or more, but less than 67,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 30 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 31 Group 10: Table 5: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Do the external DETAILED INSPECTION between STA 727A and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 67,000 TFC or more as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Before further flightCONDITION 1CONDITION 1: ACTION 1:ANY REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) (a) -Before further flightCONDITION 1 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row at the unre- paired areas for any crack (a) -Before further flightCONDITION 2CONDITION 2: ACTION 1:NO REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) and the inspection area has magnetic or protrud- ing head fasteners in- stalled -Before further flightCONDITION 2 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack at areas that do not have magnetic or protruding head fasteners installed -Before further flightDo the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack CONDITION 3: NO REPAIR FOUND and the inspection area does not have magnetic or protruding head fasten- ers installed Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 31 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 32 Group 10: Table 5: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 4CONDITION 4: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has less than 67,500 TFC Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 3,000 Flight-CONDITION 4 Cycles (b)ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,000 Flight Cycles (c) - 1,000 Flight Cycles (d) - 500 Flight Cycles (e) - -Before further flightCONDITION 5CONDITION 5: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 500 Flight Cycles-CONDITION 5 ACTION 2, OPTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) -Before further flightCONDITION 5 ACTION 2, OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(f) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 32 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 33 Group 10: Table 5: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 6CONDITION 6: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair -Before further flightCONDITION 6 ACTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(f) 3,000 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 7: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has less than 67,500 TFC Cycles (b) 2,000 Flight Cycles (c) - 1,000 Flight- Cycles (d) 500 Flight- Cycles (e) 500 Flight Cycles-CONDITION 8CONDITION 8: OPTION 1:NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) -Before further flightCONDITION 8 OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(f) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 33 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 34 Group 10: Table 5: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightDo the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(f) CONDITION 9: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished -Before further flightCONDITION 10CONDITION 10: ACTION 1:ANY CRACK FOUND during the OPEN HOLE - HFEC INSPECTION Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 10 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,500 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 11: NO CRACK FOUND dur- ing the OPEN HOLE - HFEC INSPECTION Cycles Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 34 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 35 Group 10: Table 5: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 12CONDITION 12: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 12 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 13: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE HFEC INSPECTION pre- viously accomplished Flight Cycles (a) It is not required to contact Boeing or do the inspections in the area under the existing repair where one of the following repairs has been installed: 1) Boeing ODA-approved and consists of 3 or more fastener rows above and below the production lap splices. 2) Published SRM repair and consists of 3 or more fastener rows above and below the production lap splice. 3) In accordance with 737-500 SRM 53-00-01, Repairs 30 or 31, Category A or B repairs only. (b) Airplanes with less than 51,000 TFC at the time of the previous external DFEC inspection. (c) Airplanes with 51,000 TFC or more, but less than 59,000 TFC at the time of the previous external DFEC inspection. (d) Airplanes with 59,000 TFC or more, but less than 66,500 TFC at the time of the previous external DFEC inspection. (e) Airplanes with 66,500 TFC or more at the time of the previous external DFEC inspection. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 35 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 36 Group 10: Table 5: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14L Lap Splice Skin (Left Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition (f) The OPEN HOLE - HFEC inspection is a one-time inspection. It is not required to repeat the Open Hole HFEC inspection, if it was done at or after 67,500 TFC. Group 1-2, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 6: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 3,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 53,999 TFC Before 42,000 TFC Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with less than 52,000 Total Flight Cycles (TFC) as of the original issue date of Require- ments Bulletin 737- 53A1382 RB -Within 2,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 60,999 TFC Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with 52,000 TFC or more, but less than 60,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 1,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 67,499 TFC Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with 60,000 TFC or more, but less than 67,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with 67,000 TFC or more as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 36 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 37 Group 1-2, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 6: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 1CONDITION 1: ACTION 1:ANY REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) (b) -Before further flightCONDITION 1 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row at the unre- paired areas for any crack (b) -Before further flightCONDITION 2CONDITION 2: ACTION 1:NO REPAIR FOUND and the inspection area has magnetic or protruding head fasteners installed Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) -Before further flightCONDITION 2 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack at areas that do not have magnetic or protruding head fasteners installed -Before further flightDo the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack CONDITION 3: NO REPAIR FOUND and the inspection area does not have magnetic or pro- truding head fasteners in- stalled Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 37 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 38 Group 1-2, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 6: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 4CONDITION 4: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has less than 67,500 TFC Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 3,000 Flight-CONDITION 4 Cycles (a)(c)ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) 2,000 Flight Cycles (a)(d) - 1,000 Flight Cycles (a)(e) - 500 Flight Cycles (a)(f) - -Before further flightCONDITION 5CONDITION 5: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 500 Flight Cycles (a) -CONDITION 5 ACTION 2, OPTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) -Before further flightCONDITION 5 ACTION 2, OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (b)(g) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 38 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 39 Group 1-2, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 6: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 6CONDITION 6: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair -Before further flightCONDITION 6 ACTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (b)(g) 3,000 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 7: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has less than 67,500 TFC Cycles (a)(c) 2,000 Flight Cycles (a)(d) - 1,000 Flight- Cycles (a)(e) 500 Flight Cycles (a)(f) - 500 Flight Cycles (a) -CONDITION 8 OPTION 1: CONDITION 8: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) -Before further flightCONDITION 8 OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (b)(g) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 39 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 40 Group 1-2, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 6: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightDo the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (b)(g) CONDITION 9: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished -Before further flightCONDITION 10CONDITION 10: ACTION 1:ANY CRACK FOUND during the OPEN HOLE - HFEC INSPECTION Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 10 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) 2,500 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 11: NO CRACK FOUND dur- ing the OPEN HOLE - HFEC INSPECTION Cycles Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 40 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 41 Group 1-2, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 6: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 12CONDITION 12: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 12 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 13: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE HFEC INSPECTION pre- viously accomplished Flight Cycles (a) Group 1 airplanes - Replacement of a skin panel in accordance with service bulletin 737-53-1065 at or after 59,000 TFC terminates the inspection in the area of the skin replacement. Groups 2 and 11 airplanes - Replacement of a skin panel in accordance with service bulletin 737-53-1168 at or after 53,000 TFC terminates the inspection in the area of the skin replacement. Group 9 airplanes - Replacement of a skin panel in accordance with service bulletin 737-53-1315 at or after 53,000 TFC terminates the inspection in the area of the skin replacement. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 41 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 42 Group 1-2, Configuration 1; Group 6-7; Group 9, 11, Configuration 1: Table 6: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition (b) It is not required to contact Boeing or do the inspections in the area under the existing repair where one of the following repairs or modifications has been installed: 1) Boeing ODA-approved and consists of 3 or more fastener rows above and below the production lap splices. 2) Published SRM repair and consists of 3 or more fastener rows above and below the production lap splice. 3) In accordance with 737-100/200 SRM 53-30-03, Figure 42, Category A or B repairs only. 4) In accordance with 737-300, -400, -500 SRM 53-00-01, Repairs 30 or 31, Category A or B repairs only. 5) In accordance with either SB 737-53A1177 or SB 737-53A1255. (c) Airplanes with less than 51,000 TFC at the time of the previous external DFEC inspection. (d) Airplanes with 51,000 TFC or more, but less than 59,000 TFC at the time of the previous external DFEC inspection. (e) Airplanes with 59,000 TFC or more, but less than 66,500 TFC at the time of the previous external DFEC inspection. (f) Airplanes with 66,500 TFC or more at the time of the previous external DFEC inspection. (g) The OPEN HOLE - HFEC inspection is a one-time inspection. It is not required to repeat the Open Hole HFEC inspection, if it was done at or after 67,500 TFC. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 42 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 43 Group 3, Configuration 1: Table 7: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 4,500 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 41,999 TFC Before 30,000 TFC ACTION 1: Do the external DETAILED INSPECTION between STA 747 and STA 847 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with less than 39,000 Total Flight Cycles (TFC) as of the original issue date of Require- ments Bulletin 737- 53A1382 RB -Before 42,000 TFCACTION 2: Do the external DETAILED INSPECTION between STA 727A and STA 747 for any re- pair and any magnetic or pro- truding head fasteners in- stalled -Within 3,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 53,999 TFC ACTION 1: Do the external DETAILED INSPECTION between STA 747 and STA 847 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 39,000 TFC or more, but less than 52,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 3,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 53,999 TFC Before 42,000 TFC ACTION 2: Do the external DETAILED INSPECTION between STA 727A and STA 747 for any re- pair and any magnetic or pro- truding head fasteners in- stalled -Within 2,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 60,999 TFC Do the external DETAILED INSPECTION between STA 727A and STA 847 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 52,000 TFC or more, but less than 60,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 43 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 44 Group 3, Configuration 1: Table 7: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 1,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 67,499 TFC Do the external DETAILED INSPECTION between STA 727A and STA 847 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 60,000 TFC or more, but less than 67,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB ACTION 1: Do the external DETAILED INSPECTION between STA 727A and STA 847 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 67,000 TFC or more as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Before further flightCONDITION 1CONDITION 1: ACTION 1:ANY REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) (b) -Before further flightCONDITION 1 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row at the unre- paired areas for any crack (b) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 44 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 45 Group 3, Configuration 1: Table 7: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 2CONDITION 2: ACTION 1:NO REPAIR FOUND and the inspection area has magnetic or protruding head fasteners installed Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) -Before further flightCONDITION 2 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack at areas that do not have magnetic or protruding head fasteners installed -Before further flightDo the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack CONDITION 3: NO REPAIR FOUND and the inspection area does not have magnetic or pro- truding head fasteners in- stalled -Before further flightCONDITION 4CONDITION 4: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has less than 67,500 TFC Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 4,500 Flight-CONDITION 4 Cycles (a)(c)ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) 3,000 Flight Cycles (a)(d) - 2,000 Flight Cycles (a)(e) - 1,000 Flight- Cycles (a)(f) 500 Flight Cycles (a)(g) - Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 45 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 46 Group 3, Configuration 1: Table 7: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 5CONDITION 5: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 500 Flight Cycles (a) -CONDITION 5 ACTION 2, OPTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) -Before further flightCONDITION 5 ACTION 2, OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (b)(h) -Before further flightCONDITION 6CONDITION 6: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair -Before further flightCONDITION 6 ACTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (b)(h) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 46 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 47 Group 3, Configuration 1: Table 7: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 4,500 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 7: NO CRACK FOUND dur- ing the external DFEC in- spection and the airplane has less than 67,500 TFC Cycles (a)(c) 3,000 Flight Cycles (a)(d) - 2,000 Flight- Cycles (a)(e) 1,000 Flight- Cycles (a)(f) 500 Flight Cycles (a)(g) - 500 Flight-CONDITION 8CONDITION 8: Cycles (a)OPTION 1:NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) -Before further flightCONDITION 8 OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (b)(h) -Before further flightDo the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (b)(h) CONDITION 9: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 47 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 48 Group 3, Configuration 1: Table 7: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 10CONDITION 10: ACTION 1:ANY CRACK FOUND during the OPEN HOLE - HFEC INSPECTION Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 10 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) 2,500 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 11: NO CRACK FOUND dur- ing the OPEN HOLE - HFEC INSPECTION Cycles -Before further flightCONDITION 12CONDITION 12: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 12 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (b) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 48 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 49 Group 3, Configuration 1: Table 7: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (b) CONDITION 13: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE HFEC INSPECTION pre- viously accomplished Flight Cycles (a) Replacement of a skin panel in accordance with service bulletin 737-53-1168 at or after 53,000 TFC ter- minates the inspection in the area of the skin replacement. (b) It is not required to contact Boeing or do the inspections in the area under the existing repair where one of the following repairs has been installed: 1) Boeing ODA-approved and consists of 3 or more fastener rows above and below the production lap splices. 2) Published SRM repair and consists of 3 or more fastener rows above and below the production lap splice. 3) In accordance with 737-300 SRM 53-00-01, Repairs 30 or 31, Category A or B repairs only. 4) In accordance with either SB 737-53A1177 or SB 737-53A1255. (c) Airplanes with less than 37,500 TFC at the time of the previous external DFEC inspection. (d) Airplanes with 37,500 TFC or more, but less than 51,000 TFC at the time of the previous external DFEC inspection. (e) Airplanes with 51,000 TFC or more, but less than 59,000 TFC at the time of the previous external DFEC inspection. (f) Airplanes with 59,000 TFC or more, but less than 66,500 TFC at the time of the previous external DFEC inspection. (g) Airplanes with 66,500 TFC or more at the time of the previous external DFEC inspection. (h) The OPEN HOLE - HFEC inspection is a one-time inspection. It is not required to repeat the Open Hole HFEC inspection, if it was done at or after 67,500 TFC. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 49 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 50 Group 4: Table 8: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 3,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 53,999 TFC Before 42,000 TFC ACTION 1: Do the external DETAILED INSPECTION between STA 787 and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with less than 52,000 Total Flight Cycles (TFC) as of the original issue date of Require- ments Bulletin 737- 53A1382 RB -Before 56,000 TFCACTION 2: Do the external DETAILED INSPECTION between STA 727 and STA 787 for any re- pair and any magnetic or pro- truding head fasteners in- stalled -Within 2,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 60,999 TFC ACTION 1: Do the external DETAILED INSPECTION between STA 787 and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 52,000 TFC or more, but less than 60,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Within 2,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB but not to exceed 60,999 TFC Before 56,000 TFC ACTION 2: Do the external DETAILED INSPECTION between STA 727A and STA 787 for any re- pair and any magnetic or pro- truding head fasteners in- stalled -Within 1,000 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB but not to exceed 67,499 TFC Do the external DETAILED INSPECTION between STA 727A and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 60,000 TFC or more, but less than 67,000 TFC as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 50 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 51 Group 4: Table 8: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Do the external DETAILED INSPECTION between STA 727A and STA 908 for any re- pair and any magnetic or pro- truding head fasteners in- stalled Airplanes with 67,000 TFC or more as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Before further flightCONDITION 1CONDITION 1: ACTION 1:ANY REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) (a) -Before further flightCONDITION 1 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row at the unre- paired areas for any crack (a) -Before further flightCONDITION 2CONDITION 2: ACTION 1:NO REPAIR FOUND and the inspection area has magnetic or protruding head fasteners installed Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) -Before further flightCONDITION 2 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack at areas that do not have magnetic or protruding head fasteners installed -Before further flightDo the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack CONDITION 3: NO REPAIR FOUND and the inspection area does not have magnetic or pro- truding head fasteners in- stalled Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 51 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 52 Group 4: Table 8: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 4CONDITION 4: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has less than 67,500 TFC Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 3,000 Flight-CONDITION 4 Cycles (b)ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,000 Flight Cycles (c) - 1,000 Flight Cycles (d) - 500 Flight Cycles (e) - -Before further flightCONDITION 5CONDITION 5: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 500 Flight Cycles-CONDITION 5 ACTION 2, OPTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) -Before further flightCONDITION 5 ACTION 2, OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(f) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 52 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 53 Group 4: Table 8: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 6CONDITION 6: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair -Before further flightCONDITION 6 ACTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(f) 3,000 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 7: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has less than 67,500 TFC Cycles (b) 2,000 Flight Cycles (c) - 1,000 Flight- Cycles (d) 500 Flight Cycles (e) - 500 Flight Cycles-CONDITION 8CONDITION 8: OPTION 1:NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) -Before further flightCONDITION 8 OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(f) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 53 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 54 Group 4: Table 8: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightDo the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(f) CONDITION 9: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished -Before further flightCONDITION 10CONDITION 10: ACTION 1:ANY CRACK FOUND during the OPEN HOLE - HFEC INSPECTION Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 10 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,500 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 11: NO CRACK FOUND dur- ing the OPEN HOLE - HFEC INSPECTION Cycles Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 54 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 55 Group 4: Table 8: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 12CONDITION 12: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously accomplished Do the REPAIR in accordance with the applicable 737 Struc- tural Repair Manual Or Contact The Boeing Company for alternative repair instruc- tions and do the repair 2,500 Flight-CONDITION 12 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 13: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE HFEC INSPECTION pre- viously accomplished Flight Cycles (a) It is not required to contact Boeing or do the inspections in the area under the existing repair where one of the following repairs has been installed: 1) Boeing ODA-approved and consists of 3 or more fastener rows above and below the production lap splices. 2) Published SRM repair and consists of 3 or more fastener rows above and below the production lap splice. 3) In accordance with 737-300 SRM 53-00-01, Repairs 30 or 31, Category A or B repairs only. (b) Airplanes with less than 51,000 TFC at the time of the previous external DFEC inspection. (c) Airplanes with 51,000 TFC or more, but less than 59,000 TFC at the time of the previous external DFEC inspection. (d) Airplanes with 59,000 TFC or more, but less than 66,500 TFC at the time of the previous external DFEC inspection. (e) Airplanes with 66,500 TFC or more at the time of the previous external DFEC inspection. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 55 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 56 Group 4: Table 8: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition (f) The OPEN HOLE - HFEC inspection is a one-time inspection. It is not required to repeat the Open Hole HFEC inspection, if it was done at or after 67,500 TFC. Group 5, 8: Table 9: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 1,000 flight cycles af- ter the original issue date of Requirements Bulletin 737- 53A1382 RB, but not to ex- ceed 67,499 TFC Before 62,000 TFC Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with less than 67,000 Total Flight Cycles (TFC) as of the original issue date of Require- ments Bulletin 737- 53A1382 RB -Within 500 flight cycles after the original issue date of Require- ments Bulletin 737-53A1382 RB Do the external DETAILED INSPECTION for any repair and any magnetic or protrud- ing head fasteners installed Airplanes with 67,000 TFC or more as of the original issue date of Re- quirements Bulletin 737- 53A1382 RB -Before further flightCONDITION 1CONDITION 1: ACTION 1:ANY REPAIR FOUND Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) (a) -Before further flightCONDITION 1 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row at the unre- paired areas for any crack (a) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 56 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 57 Group 5, 8: Table 9: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 2CONDITION 2: ACTION 1:NO REPAIR FOUND and the inspection area has magnetic or protruding head fasteners installed Contact The Boeing Company for alternative inspection(s), do the inspection(s) and appli- cable on-condition action(s) -Before further flightCONDITION 2 ACTION 2: Do the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack at areas that do not have magnetic or protruding head fasteners installed -Before further flightDo the external DUAL FRE- QUENCY EDDY CURRENT (DFEC) INSPECTION of the lower skin along the lap splice lower fastener row for any crack CONDITION 3: NO REPAIR FOUND and the inspection area does not have magnetic or protruding head fasten- ers installed -Before further flightCONDITION 4CONDITION 4: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has less than 67,500 TFC Contact The Boeing Company for repair instructions and do the repair (b) 1,000 Flight-CONDITION 4 Cycles (c)ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 500 Flight Cycles (d) - Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 57 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 58 Group 5, 8: Table 9: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 5CONDITION 5: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Contact Boeing for repair in- structions and do the repair (b) 500 Flight Cycles-CONDITION 5 ACTION 2, OPTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) -Before further flightCONDITION 5 ACTION 2, OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(e) -Before further flightCONDITION 6CONDITION 6: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished Contact Boeing for repair in- structions and do the repair (b) -Before further flightCONDITION 6 ACTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice at the unrepaired areas for any crack (a)(e) 1,000 Flight-CONDITION 7CONDITION 7: Cycles (c)NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has less than 67,500 TFC ACTION 1: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) 500 Flight Cycles (d) - Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 58 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 59 Group 5, 8: Table 9: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition 500 Flight Cycles-CONDITION 8CONDITION 8: OPTION 1:NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more, but less than 70,000 TFC and OPEN HOLE - HFEC INSPEC- TION previously not ac- complished Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) -Before further flightCONDITION 8 OPTION 2: Do the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(e) -Before further flightDo the OPEN HOLE - HFEC INSPECTION of the lower skin at all the lower fastener row holes of the lap splice for any crack (a)(e) CONDITION 9: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 70,000 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously not accomplished -Before further flightCONDITION 10CONDITION 10: ACTION 1:ANY CRACK FOUND during the OPEN HOLE - HFEC INSPECTION Contact Boeing for repair in- structions and do the repair (b) 2,500 Flight-CONDITION 10 CyclesACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,500 Flight-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 11: NO CRACK FOUND dur- ing the OPEN HOLE - HFEC INSPECTION Cycles Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 59 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT ### Page 60 Group 5, 8: Table 9: Detailed Inspection, Dual Frequency Eddy Current, and Open Hole - High Frequency Eddy Current Inspections of the S-14R Lap Splice Skin (Right Side) Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Before further flightCONDITION 12CONDITION 12: ACTION 1:ANY CRACK FOUND during the external DFEC INSPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE - HFEC INSPECTION pre- viously accomplished Contact The Boeing Company for alternative repair instruc- tions and do the repair (b) 2,500 Flight Cycles -CONDITION 12 ACTION 2: Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row at the unrepaired areas for any crack (a) 2,500-Repeat the external DFEC IN- SPECTION of the lower skin along the lap splice lower fas- tener row for any crack (a) CONDITION 13: NO CRACK FOUND dur- ing the external DFEC IN- SPECTION and the air- plane has 67,500 TFC or more and OPEN HOLE HFEC INSPECTION pre- viously accomplished Flight Cycles (a) It is not required to contact Boeing or do the inspections in the area under the existing repair if an installed repair is Boeing ODA-approved and consists of 3 or more fastener rows above and below the production lap splices. (b) The SRM does not have an applicable repair for these airplanes. (c) Airplanes with less than 66,500 TFC at the time of the previous external DFEC inspection. (d) Airplanes with 66,500 TFC or more at the time of the previous external DFEC inspection. (e) The OPEN HOLE - HFEC inspection is a one-time inspection. It is not required to repeat the Open Hole HFEC inspection, if it was done at or after 67,500 TFC. Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details. Original Issue: May 06, 2019 737-53A1382 RB 60 of 227 REQUIREMENTS BULLETIN 737-53A1382 ALERTALERT The text continues at https://openairdocs.org/service-documents/boeing/737-53a1382/file/bb296ea55e6b.md?from=61 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.