2026-04-06: 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: 2026-04-06 The Boeing Company: Amendment 39-23266; Docket No. FAA-2026-1333; Project Identifier AD-2026-00130-T. (a) Effective Date This airworthiness directive (AD) is effective February 26, 2026. (b) Affected ADs None. (c) Applicability This AD applies to The Boeing Company Model 757-200 and -300 series airplanes, certificated in any category, as identified in Aviation Partners Boeing Alert Service Letter APBSL757-0039 Rev IR, dated February 4, 2026. (d) Subject Air Transport Association (ATA) of America Code 57, Wings. (e) Unsafe Condition This AD was prompted by reported crack findings on airplanes with scimitar blended winglets. The FAA is issuing this AD to address the potential for an undetected crack in the inspar outer lower left and right wing skin area. The unsafe condition, if not addressed, could result in reduced structural integrity or partial wing loss leading to loss of control of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) Within 5 days after the effective date of this AD, do an external detailed inspection and an external high frequency eddy current inspection of the wing lower skin panel between wing station (WSTA) 711.5 and WSTA 743.5, left and right wing, for cracks, in accordance with Figure 1 of Aviation Partners Boeing Alert Service Letter APBSL757-0039 Rev IR, dated February 4, 2026. (2) If any crack is found, during any inspection required by paragraph (g)(1) of this AD, repair before further flight using a method approved in accordance with the procedures specified in paragraph (i) of this AD. (h) Special Flight Permit Special flight permits, as described in 14 CFR 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199), are not allowed unless approved in accordance with the procedures specified in paragraph (i) of this AD. (i) Alternative Methods of Compliance (AMOCs) The Manager, 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 (j) 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. (j) Additional Information For more information about this AD, contact Sarah Illg, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 206-231-3517; email: Sarah.A.Illg@faa.gov. (k) 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 Alert Service Letter APBSL757-0039 Rev IR, dated February 4, 2026. Note 1 to paragraph (k)(2)(i): Page 1 of Aviation Partners Boeing Alert Service Letter APBSL757-0039 Rev IR is the only page of the document that contains the document date. (ii) [Reserved] (3) For material identified in this AD, contact Aviation Partners Boeing, 2811 South 102nd Street, Suite 200, Seattle, WA 98168; telephone 1-206-830-7699; 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 February 18, 2026. Paul R. Bernado, Acting Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026-03856 Filed 2-24-26; 4:15 pm]BILLING CODE 4910-13-P