2026-08-09: Wings

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2026-08-09 The Boeing Company: Amendment 39-23317; Docket No. FAA-2025-2275; Project Identifier AD-2025-00796-T. (a) Effective Date This airworthiness directive (AD) is effective June 3, 2026. (b) Affected ADs This AD affects AD 2020-01-18, Amendment 39-19824 ((85 FR 5304, January 30, 2020); corrected February 26, 2020 (85 FR 10969)) (AD 2020-01-18). (c) Applicability This AD applies to The Boeing Company Model 757-200 and -300 series airplanes, certificated in any category, that have been modified in accordance with supplemental type certificate (STC) ST01518SE, with or without blended or scimitar blended winglets installed. (d) Subject Air Transport Association (ATA) of America Code 05, Time Limits/Maintenance Checks; 57, Wings. (e) Unsafe Condition This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address fatigue cracking on the wing and winglet. This condition, if not addressed, could result in the inability of a principal structural element to sustain limit loads, which could adversely affect the structural integrity of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Maintenance or Inspection Program Revision (1) For Model 757-200 series airplanes: Within 30 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the service information specified in paragraphs (g)(1)(i) and (ii) of this AD. The initial compliance time for doing the tasks is at the time specified in the service information identified in paragraphs (g)(1)(i) and (ii) of this AD, or within 6 months or 500 flight cycles after the effective date of this AD, whichever occurs later. (i) Aviation Partners Boeing AP57.2-0604.2 Supplement to D622N001-9 (Sep 2020) 757 Maintenance Planning Data (MPD) Document Section 9 Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs) Boeing 757-200 with Winglets FAA STC Number ST01518SE and EASA STC Number 10015659, Revision February 2022. (ii) Aviation Partners Boeing AP57.2-0604.2-DTR Supplement to D622N001-DTR (Oct 2018) 757 Damage Tolerance Rating (DTR) Check Form Document for Boeing 757-200 with Winglets FAA STC Number ST01518SE and EASA STC Number 10015659, Revision August 2023. (2) For Model 757-300 series airplanes: Within 30 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the service information specified in paragraphs (g)(2)(i) and (ii) of this AD. The initial compliance time for doing the tasks is at the time specified in the service information identified in paragraphs (g)(2)(i) and (ii) of this AD, or within 6 months or 500 flight cycles after the effective date of this AD, whichever occurs later. (i) Aviation Partners Boeing AP57.3-0604.2 Supplement to D622N001-9 (Sep 2020) 757 Maintenance Planning Data (MPD) Document Section 9 Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs) 757-300 with Blended Winglets FAA STC ST01518SE and EASA STC Number 10015659, Revision August 2022. (ii) Aviation Partners Boeing AP57.3-0604.2-DTR Supplement to D622N001-DTR (Oct 2018) 757 Damage Tolerance Rating (DTR) Check Form Document for Boeing 757-300 with Blended Winglets FAA STC Number ST01518SE and EASA STC Number 10015659, Revision August 2023. (3) The reports specified in the service information identified in paragraphs (g)(1)(i) and (ii) of this AD and (g)(2)(i) and (ii) of this AD must be submitted within 10 days after the airplane is returned to service, instead of 10 days after each individual finding as specified in the service information identified in paragraphs (g)(1)(i) and (ii) of this AD and (g)(2)(i) and (ii) of this AD. (h) No Alternative Actions or Intervals After the existing maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions ( e.g., inspections) or intervals, may be used unless the actions and intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (j) of this AD. (i) Terminating Action for Paragraphs (g) and (h)(2) of AD 2020-01-18 Accomplishing the actions required by paragraph (g) this AD terminates the requirements specified in paragraphs (g) and (h)(2) of AD 2020-01-18 for The Boeing Company Model 757-200 and -300 series airplanes that have been modified in accordance with STC ST01518SE, with or without blended or scimitar blended winglets installed. (j) 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 West Certification Branch, send it to the attention of the person identified in paragraph (k) 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 Company Organization Designation Authorization (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 previously for AD 2020-01-18; AD 2006-11-11 Amendment 39-14615 (71 FR 30278, May 26, 2006); and AD 2001-20-12, Amendment 39-12460 (66 FR 52492, October 16, 2001); are approved as AMOCs for the corresponding provisions of this AD, except for AMOCs that included revised compliance times. (k) Related 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. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference 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 the AD specifies otherwise. (i) Aviation Partners Boeing AP57.2-0604.2 Supplement to D622N001-9 (Sep 2020) 757 Maintenance Planning Data (MPD) Document Section 9 Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs) Boeing 757-200 with Winglets FAA STC Number ST01518SE and EASA STC Number 10015659, Revision February 2022. (ii) Aviation Partners Boeing AP57.2-0604.2-DTR Supplement to D622N001-DTR (Oct 2018) 757 Damage Tolerance Rating (DTR) Check Form Document for Boeing 757-200 with Winglets FAA STC Number ST01518SE and EASA STC Number 10015659, Revision August 2023. (iii) Aviation Partners Boeing AP57.3-0604.2 Supplement to D622N001-9 (Sep 2020) 757 Maintenance Planning Data (MPD) Document Section 9 Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs) 757-300 with Blended Winglets FAA STC ST01518SE and EASA STC Number 10015659, Revision August 2022. (iv) Aviation Partners Boeing AP57.3-0604.2-DTR Supplement to D622N001-DTR (Oct 2018) 757 Damage Tolerance Rating (DTR) Check Form Document for Boeing 757-300 with Blended Winglets FAA STC Number ST01518SE and EASA STC Number 10015659, Revision August 2023. (3) For Aviation Partners Boeing material identified in this AD, contact Aviation Partners Boeing, 555 Andover Park West, Suite 200, Tukwila, WA 98188; telephone 206-830-7699; email leng@aviationpartners.com; website aviationpartnersboeing.com. (4) 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. (5) 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 April 23, 2026. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026-08304 Filed 4-28-26; 8:45 am]BILLING CODE 4910-13-P