2026-16-06: Wings

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by: a. Removing Airworthiness Directive (AD) 2018-11-14, Amendment 39-19302 (83 FR 25885, June 5, 2018); and b. Adding the following new AD: 2026-16-06 The Boeing Company: Amendment 39-23436; Docket No. FAA-2026-0023; Project Identifier AD-2025-00427-T. (a) Effective Date This airworthiness directive (AD) is effective September 17, 2026. (b) Affected ADs This AD replaces AD 2018-11-14, Amendment 39-19302 (83 FR 25885, June 5, 2018) (AD 2018-11-14). (c) Applicability This AD applies to The Boeing Company Model 767-300 and -300F series airplanes, certificated in any category, provisioned for blended winglets modified in accordance with Supplemental Type Certificate (STC) ST01920SE, with or without winglets installed. (d) Subject Air Transport Association (ATA) of America Code 57, Wings. (e) Unsafe Condition This AD was prompted by reports of fatigue cracking in the lower outboard wing skin at the inboard fastener of stringer L-9.5, and the lower outboard wing skin of stringer L-6.5, on airplanes with winglets installed per Supplemental Type Certificate ST01920SE. This AD was also prompted by a determination that, for certain airplanes, the area of the lower wing skin in the vicinity of the critical inboard end fasteners of installed repair doublers must be inspected. The FAA is issuing this AD to prevent fatigue cracking in the lower outboard wing skin. The unsafe condition, if not addressed, could result in failure and subsequent separation of the wing and winglet and consequent reduced controllability of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Repetitive Stringer L-9.5 Inspections, Modification, Repair (Modification), Repetitive Post-Repair Inspections, and Repair, With Revised Service Information This paragraph restates the requirements of paragraph (g) of AD 2018-11-14, with revised service information. (1) For Group 1 and Group 2 airplanes, identified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, with winglets installed: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, except as required by paragraph (j)(1) of this AD: Do a high frequency eddy current (HFEC) inspection for cracking of the lower outboard wing skin at stringer L-9.5, in accordance with Part 1 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. (i) For airplanes on which "Condition 1" is found, as defined in the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, during any inspection required by paragraph (g)(1) or (g)(1)(i)(A) of this AD: Do the applicable actions required by paragraph (g)(1)(i)(A), (g)(1)(i)(B), (g)(1)(i)(C), or (g)(1)(i)(D) of this AD. (A) Repeat the inspection specified in paragraph (g)(1) of this AD thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017. (B) Do the applicable actions required by paragraphs (g)(1)(i)(B)( 1 ), (g)(1)(i)(B)( 2 ), and (g)(1)(i)(B)( 3 ) of this AD. ( 1 ) Before further flight, do actions (modifications and repair (modification)) in accordance with Part 2, Part 3, Part 4, and Part 5, as applicable, of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 2 ) For airplanes on which the repair (modification) specified in Part 5 of Aviation Partners Boeing Service Bulletin AP767-57-010 was done: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, do a post-repair HFEC inspection for cracking, in accordance with Part 12 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 3 ) If any crack is found during any inspection required by paragraph (g)(1)(i)(B)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (C) Do the actions required by paragraphs (g)(1)(i)(C)( 1 ) and (g)(1)(i)(C)( 2 ) of this AD, and do all applicable actions required by paragraph (g)(1)(i)(C)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 8 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, do a post-repair HFEC inspection for cracking, in accordance with Part 9 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 3 ) If any crack is found during any inspection required by paragraph (g)(1)(i)(C)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (D) Do the actions required by paragraphs (g)(1)(i)(D)( 1 ) and (g)(1)(i)(D)( 2 ) of this AD, and do all applicable actions required by paragraph (g)(1)(i)(D)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 11 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, do a post-repair HFEC inspection for cracking, in accordance with Part 13 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; except as required by paragraph (j)(4) of this AD. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 3 ) If any crack is found during any inspection required by paragraph (g)(1)(i)(D)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (ii) For airplanes on which "Condition 2" is found, as defined in the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, during any inspection required by paragraph (g)(1) or (g)(1)(i)(A) of this AD: Do the actions required by paragraph (g)(1)(ii)(A) or (g)(1)(ii)(B) of this AD. (A) Do the actions required by paragraphs (g)(1)(ii)(A)( 1 ) and (g)(1)(ii)(A)( 2 ) of this AD, and do all applicable actions required by paragraph (g)(1)(ii)(A)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 8 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, do a post-repair HFEC inspection for cracking, in accordance with Part 9 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance." of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 3 ) If any crack is found during any inspection required by paragraph (g)(1)(ii)(A)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (B) Do the actions required by paragraphs (g)(1)(ii)(B)( 1 ) and (g)(1)(ii)(B)( 2 ) of this AD, and do all applicable actions required by paragraph (g)(1)(ii)(B)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 11 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, do a post-repair HFEC inspection for cracking, in accordance with Part 13 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; except as required by paragraph (j)(4) of this AD. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 3 ) If any crack is found during any inspection required by paragraph (g)(1)(ii)(B)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (iii) For airplanes on which "Condition 3" is found, as defined in the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, during the actions specified in paragraph (g)(1)(i)(B)( 1 ) of this AD: Do the actions required by paragraph (g)(1)(iii)(A) or (g)(1)(iii)(B) of this AD. (A) Do the actions required by paragraphs (g)(1)(iii)(A)( 1 ) and (g)(1)(iii)(A)( 2 ) of this AD, and do all applicable actions required by paragraph (g)(1)(iii)(A)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 8 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, do a post-repair HFEC inspection for cracking, in accordance with Part 9 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 3 ) If any crack is found during any inspection required by paragraph (g)(1)(iii)(A)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (B) Do the actions required by paragraphs (g)(1)(iii)(B)( 1 ) and (g)(1)(iii)(B)( 2 ) of this AD, and do all applicable actions required by paragraph (g)(1)(iii)(B)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 11 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, do a post-repair HFEC inspection for cracking, in accordance with Part 13 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57- 010, Revision 11, dated April 3, 2017; or Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; except as required by paragraph (j)(4) of this AD. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, may be used for performing the actions required by this paragraph. ( 3 ) If any crack is found during any inspection required by paragraph (g)(1)(iii)(B)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (iv) For airplanes on which "Condition 4" is found, as defined in the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, during any action specified in paragraph (g)(1)(i)(C)( 1 ), (g)(1)(i)(D)( 1 ), (g)(1)(ii)(A)( 1 ), (g)(1)(ii)(B)( 1 ), (g)(1)(iii)(A)( 1 ), and (g)(1)(iii)(B)( 1 ) of this AD: Repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (2) For Group 3 airplanes, identified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, with winglets installed: At the applicable time specified in paragraph 1.E., "Compliance" of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, or within 6 months after July 10, 2018 (the effective date of AD 2018-11-14), whichever occurs later, do an HFEC inspection for cracking of the lower outboard wing skin at stringer L-9.5, in accordance with Part 7 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017. Repeat the inspections thereafter at the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017. If any cracking is found during any inspection, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. An approved repair terminates the repetitive inspections required by paragraph (g)(2) of this AD for the repaired area only. Doing the initial inspections required by paragraph (k) of this AD terminates the inspections required by paragraph (g)(2) of this AD. (3) Group 4 airplanes, identified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, with winglets installed, are not affected by the actions required by paragraph (g) of this AD. (h) Retained Repetitive Stringer L-6.5 Inspections, Repair (Modification), Repetitive Post-Repair Inspections, and Repair With No Changes This paragraph restates the requirements of paragraph (h) of AD 2018-11-14, with no changes. (1) For airplanes, identified in Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017, with winglets installed: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017, except as required by paragraph (j)(2) of this AD: Do an HFEC inspection for cracking of stringer L-6.5 of the lower outboard wing skin, in accordance with Part 1 of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017; or Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. If no cracking is found, repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017, except as provided by paragraph (h)(3) of this AD. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, may be used for performing the actions required by this paragraph. (2) If any crack is found during any inspection required by paragraph (h)(1) of this AD, do the actions required by paragraphs (h)(2)(i) and (h)(2)(ii) of this AD, and do all applicable actions required by paragraph (h)(2)(iii) of this AD. (i) Before further flight, repair (modify) stringer L-6.5, in accordance with Part 2 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017; or Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, may be used for performing the actions required by this paragraph. (ii) Except as required by paragraph (j)(3) of this AD: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017, except as required by paragraph (j)(2) of this AD, do an HFEC post-repair inspection for cracking, in accordance with Part 3 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017; or Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, may be used for performing the actions required by this paragraph. (iii) If any crack is found during any inspection required by paragraph (h)(2)(ii) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (3) As an option to the repetitive inspections required by paragraph (h)(1) of this AD, do the actions required by paragraphs (h)(3)(i) and (h)(3)(ii) of this AD, and do all applicable actions required by paragraph (h)(3)(iii) of this AD. (i) Before further flight after accomplishing the most recent inspection required by paragraph (h)(1) of this AD, repair (modify) stringer L-6.5, in accordance with Part 2 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017; or Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, may be used for performing the actions required by this paragraph. (ii) Except as required by paragraph (j)(3) of this AD: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017, except as required by paragraph (j)(2) of this AD, do a post-repair HFEC inspection for cracking, in accordance with Part 3 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017; or Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017. As of the effective date of this AD, only Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, may be used for performing the actions required by this paragraph. (iii) If any crack is found during any inspection required by paragraph (h)(3)(ii) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (i) Retained Repair Approval, With New Service Information References This paragraph restates the repair approval specified in paragraph (i) of AD 2018-11-14, with new service information references. Repairs of the lower outboard wing skin that were approved after June 15, 2017, and before July 10, 2018 (the effective date of AD 2018-11-14), by the Boeing Commercial Airplanes Organization Designation Authorization (ODA) that has been authorized by the Manager, Seattle ACO Branch, FAA, are approved for the applicable repairs required by paragraphs (g) and (h) of this AD. The ODA repairs will have post installation inspection requirements in lieu of the post-inspection instructions specified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017; and Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. (j) Retained Exceptions to Service Information Specifications With No Changes This paragraph retains the exceptions specified in paragraph (j) of AD 2018-11-14, with no changes. (1) Where paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, specifies a compliance time "after the issue date of Revision 11 of this service bulletin," this AD requires compliance within the specified compliance time after July 10, 2018 (the effective date of AD 2018-11-14). (2) Where paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017, specifies a compliance time "after the initial issue date of this service bulletin," this AD requires compliance within the specified compliance time after July 10, 2018 (the effective date of AD 2018-11-14). (3) For Condition 1 and Condition 2 airplanes: Where paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017, specifies a compliance time for accomplishing the Part 3 HFEC inspection of 18 months "after the initial issue date of this service bulletin," the required compliance time is 6,000 flight cycles or 18,000 flight hours, whichever occurs first, after doing the Part 2 repair. (4) For airplanes on which a stringer L-9.5 replacement was accomplished per Part 11 of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017: Where Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017, specifies repeating the post-repair HFEC inspection "in Part 9," this AD requires repeating the post-repair HFEC inspection in Part 13. (k) New Requirements for Group 3 Airplanes For Group 3 airplanes identified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, or within 3,000 flight cycles after the effective date of this AD, whichever occurs later, do the initial internal and external HFEC inspections of the lower outboard wing skin common to the external doubler repair at stringer L-9.5, in accordance with Part 7 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. Repeat the inspections thereafter at the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. If any cracking is found during any inspection, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. Doing the initial inspections required by this paragraph terminates the inspections required by paragraph (g)(2) of this AD. (l) New Repetitive Stringer L-9.5 Inspections, Modification, Repair (Modification), Repetitive Post-Repair Inspections, and Repair (1) For Group 1 and Group 2 airplanes identified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, without winglets installed: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, except as required by paragraph (o)(1) of this AD: Do a HFEC inspection for cracking of the lower outboard wing skin at stringer L-9.5, in accordance with Part 1 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. (i) For airplanes on which "Condition 1" is found, as defined in the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, during any inspection required by paragraph (l)(1) or (l)(1)(i)(A) of this AD: Do the applicable actions required by paragraph (l)(1)(i)(A), (l)(1)(i)(B), (l)(1)(i)(C), or (l)(1)(i)(D) of this AD. (A) Repeat the inspection specified in paragraph (l)(1) of this AD thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. (B) Do the applicable actions required by paragraphs (l)(1)(i)(B)( 1 ), (l)(1)(i)(B)( 2 ), and (l)(1)(i)(B)( 3 ) of this AD. ( 1 ) Before further flight, do actions (modifications and repair (modification)) in accordance with Part 2, Part 3, Part 4, and Part 5, as applicable, of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 2 ) For airplanes on which the repair (modification) specified in Part 5 of Aviation Partners Boeing Service Bulletin AP767-57-010 was done: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, do a post-repair HFEC inspection for cracking, in accordance with Part 12 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 3 ) If any crack is found during any inspection required by paragraph (l)(1)(i)(B)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (C) Do the actions required by paragraphs (l)(1)(i)(C)( 1 ) and (l)(1)(i)(C)( 2 ) of this AD, and do all applicable actions required by paragraph (l)(1)(i)(C)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 8 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, do a post-repair HFEC inspection for cracking, in accordance with Part 9 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 3 ) If any crack is found during any inspection required by paragraph (l)(1)(i)(C)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (D) Do the actions required by paragraphs (l)(1)(i)(D)( 1 ) and (l)(1)(i)(D)( 2 ) of this AD, and do all applicable actions required by paragraph (l)(1)(i)(D)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 11 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, do a post-repair HFEC inspection for cracking, in accordance with Part 13 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 3 ) If any crack is found during any inspection required by paragraph (l)(1)(i)(D)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (ii) For airplanes on which "Condition 2" is found, as defined in the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, during any inspection required by paragraph (l)(1) or (l)(1)(i)(A) of this AD: Do the actions required by paragraph (l)(1)(ii)(A) or (l)(1)(ii)(B) of this AD. (A) Do the actions required by paragraphs (l)(1)(ii)(A)( 1 ) and (l)(1)(ii)(A)( 2 ) of this AD, and do all applicable actions required by paragraph (l)(1)(ii)(A)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 8 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, do a post-repair HFEC inspection for cracking, in accordance with Part 9 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance." of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 3 ) If any crack is found during any inspection required by paragraph (l)(1)(ii)(A)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (B) Do the actions required by paragraphs (l)(1)(ii)(B)( 1 ) and (l)(1)(ii)(B)( 2 ) of this AD, and do all applicable actions required by paragraph (l)(1)(ii)(B)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 11 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, do a post-repair HFEC inspection for cracking, in accordance with Part 13 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 3 ) If any crack is found during any inspection required by paragraph (l)(1)(ii)(B)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (iii) For airplanes on which "Condition 3" is found, as defined in the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, during the actions specified in paragraph (l)(1)(i)(B)( 1 ) of this AD: Do the actions required by paragraph (l)(1)(iii)(A) or (l)(1)(iii)(B) of this AD. (A) Do the actions required by paragraphs (l)(1)(iii)(A)( 1 ) and (l)(1)(iii)(A)( 2 ) of this AD, and do all applicable actions required by paragraph (l)(1)(iii)(A)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 8 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, do a post-repair HFEC inspection for cracking, in accordance with Part 9 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 3 ) If any crack is found during any inspection required by paragraph (l)(1)(iii)(A)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (B) Do the actions required by paragraphs (l)(1)(iii)(B)( 1 ) and (l)(1)(iii)(B)( 2 ) of this AD, and do all applicable actions required by paragraph (l)(1)(iii)(B)( 3 ) of this AD. ( 1 ) Before further flight, repair (modify) in accordance with Part 11 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 2 ) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, do a post-repair HFEC inspection for cracking, in accordance with Part 13 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. ( 3 ) If any crack is found during any inspection required by paragraph (l)(1)(iii)(B)( 2 ) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (iv) For airplanes on which "Condition 4" is found, as defined in the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, during any action specified in paragraph (l)(1)(i)(C)( 1 ), (l)(1)(i)(D)( 1 ), (l)(1)(ii)(A)( 1 ), (l)(1)(ii)(B)( 1 ), (l)(1)(iii)(A)( 1 ), and (l)(1)(iii)(B)( 1 ) of this AD: Repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (2) Group 4 airplanes identified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, without winglets installed, are not affected by the actions required by paragraph (l) of this AD. (m) New Repetitive Stringer L-6.5 Inspections, Repair (Modification), Repetitive Post-Repair Inspections, and Repair (1) For airplanes identified in Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, without winglets installed: At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, except as required by paragraph (o)(2) of this AD, do an HFEC inspection for cracking of stringer L-6.5 of the lower outboard wing skin, in accordance with Part 1 of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. If no cracking is found, repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance" of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, except as provided by paragraph (m)(3) of this AD. (2) If any crack is found during any inspection required by paragraph (m)(1) of this AD, do the actions required by paragraphs (m)(2)(i) and (m)(2)(ii) of this AD, and do all applicable actions required by paragraph (m)(2)(iii) of this AD. (i) Before further flight, repair (modify) stringer L-6.5, in accordance with Part 2 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. (ii) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, except as required by paragraph (o)(2) of this AD, do an HFEC post-repair inspection for cracking, in accordance with Part 3 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, except as required by paragraph (o)(2) of this AD. (iii) If any crack is found during any inspection required by paragraph (m)(2)(ii) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (3) As an option to the repetitive inspections required by paragraph (m)(1) of this AD, do the actions required by paragraphs (m)(3)(i) and (ii) of this AD, and do all applicable actions required by paragraph (m)(3)(iii) of this AD. (i) Before further flight after accomplishing the most recent inspection required by paragraph (m)(1) of this AD, repair (modify) stringer L-6.5, in accordance with Part 2 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. (ii) At the applicable time specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, except as required by paragraph (o)(2) of this AD, do a post-repair HFEC inspection for cracking, in accordance with Part 3 of the Accomplishment Instructions of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, and repeat the inspection thereafter at the applicable times specified in paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, except as required by paragraph (o)(2) of this AD. (iii) If any crack is found during any inspection required by paragraph (m)(3)(ii) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (q) of this AD. (n) Repair Approval for Paragraphs (l) and (m) of This AD Repairs of the lower outboard wing skin that were approved after June 15, 2017, and before July 10, 2018 (the effective date of AD 2018-11-14), by the Boeing ODA that has been authorized by the Manager, AIR-770, West Certification Branch, FAA, are approved for the applicable repairs required by paragraphs (l) and (m) of this AD. The ODA repairs will have post installation inspection requirements in lieu of the post-inspection instructions specified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025; and Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. (o) New Exceptions to Service Information Specifications (1) Where paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025, specifies a compliance time "the effective date of AD 2018-11-14," this AD requires compliance within the specified compliance time after the effective date of this AD. (2) Where paragraph 1.E., "Compliance," of Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025, specifies a compliance time "Within 18 months after the effective date of AD 2018-11-14," this AD requires compliance within the specified compliance time after the effective date of this AD. (p) Credit for Previous Actions (1) This paragraph provides credit for the actions specified in paragraph (g) of this AD, if those actions were performed before the effective date of this AD using Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 12, dated June 21, 2018; or Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 13, dated November 5, 2024. (2) This paragraph provides credit for the actions specified in paragraph (h) of this AD, if those actions were performed before the effective date of this AD using Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 2, dated July 9, 2018. (3) This paragraph provides credit for the actions specified in paragraph (k) of this AD, if those actions were performed before the effective date of this AD using Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 13, dated November 5, 2024. (4) For Group 1 and 2 airplanes identified in Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025: This paragraph provides credit for the actions specified in paragraph (l) of this AD, if those actions were performed before the effective date of this AD using Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017; Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 12, dated June 21, 2018; or Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 13, dated November 5, 2024. (5) This paragraph provides credit for the actions specified in paragraph (m) of this AD, if those actions were performed before the effective date of this AD using Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017; or Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 2, dated July 9, 2018. (q) Alternative Methods of Compliance (AMOCs) (1) The Manager, AIR-770, West Certification Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (r) of this AD. Information may be emailed to: AMOC@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) An AMOC that provides an acceptable level of safety may be used for any repair, modification, or alteration required by this AD if it is approved by The Boeing ODA that has been authorized by the Manager, AIR-770, West Certification Branch, FAA, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD. (3) AMOCs approved for AD 2018-11-14 are approved as AMOCs for the corresponding provisions of paragraphs (g) and (h) of this AD. (4) Except as required by paragraphs (g)(1)(i)(B)( 3 ), (g)(1)(i)(C)( 3 ), (g)(1)(i)(D)( 3 ), (g)(1)(ii)(A)( 3 ), (g)(1)(ii)(B)( 3 ), (g)(1)(iii)(A)( 3 ), (g)(1)(iii)(B)( 3 ), (g)(1)(iv), (g)(2), (h)(2)(iii), (h)(3)(iii), (k), (l)(1)(i)(B)( 3 ), (l)(1)(i)(C)( 3 ), (l)(1)(i)(D)( 3 ), (l)(1)(ii)(A)( 3 ), (l)(1)(ii)(B)( 3 ), (l)(1)(iii)(A)( 3 ), (l)(1)(iii)(B)( 3 ), (l)(1)(iv), (l)(2), (m)(2)(iii), and (m)(3)(iii), of this AD: For material that contains steps that are labeled as Required for Compliance (RC), the provisions of paragraphs (q)(4)(i) and (ii) of this AD apply. (i) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. If a step or substep is labeled "RC Exempt," then the RC requirement is removed from that step or substep. An AMOC is required for any deviations to RC steps, including substeps and identified figures. (ii) Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. (r) Additional Information For more information about this AD, contact Sarah Illg, Aviation Safety Engineer, FAA, 3960 Paramount Boulevard, Lakewood, CA 90712; phone: 206-231-3517; email: Sarah.A.Illg@faa.gov. (s) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless this AD specifies otherwise. (3) The following material was approved for IBR on September 17, 2026. (i) Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 14, dated November 17, 2025. (ii) Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 3, dated November 17, 2025. (4) The following material was approved for IBR on July 10, 2018 (83 FR 25885, June 5, 2018). (i) Aviation Partners Boeing Service Bulletin AP767-57-010, Revision 11, dated April 3, 2017. (ii) Aviation Partners Boeing Service Bulletin AP767-57-014, Revision 1, dated April 12, 2017. (5) For Aviation Partners Boeing material identified in this AD, contact Aviation Partners Boeing, 555 Andover Park West, Suite 200, Tukwila, Washington 98188; telephone 206-830-7699; email certification@aviationpartners.com; website aviationpartnersboeing.com. (6) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. (7) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email fr.inspection@nara.gov . Issued on August 5, 2026. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026-16504 Filed 8-12-26; 8:45 am]BILLING CODE 4910-13-P