2024-21-01: 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: 2024-21-01 The Boeing Company: Amendment 39-22868; Docket No. FAA-2024-2412; Project Identifier AD-2024-00535-T. (a) Effective Date This airworthiness directive (AD) is effective November 7, 2024. (b) Affected ADs None. (c) Applicability This AD applies to all The Boeing Company Model 717-200 airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 57, Wings. (e) Unsafe Condition This AD was prompted by cracks found in the rear spar lower cap forward leg and lower aft skin of the right wing, during investigation of a fuel leak. The FAA is issuing this AD to address cracks in the wing rear spar lower caps and lower aft skins that are not capable of sustaining a limit load event. The unsafe condition, if not addressed, could lead to reduced structural integrity of the airplane and loss of control of the airplane, which could result in a catastrophic event. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Except as specified by paragraph (h) of this AD: At the applicable times specified in table 1 or table 2 of Boeing Multi Operator Message MOM-MOM-24-0482-01B, dated September 13, 2024, do all applicable actions identified in, and in accordance with, table 1 or table 2 of Boeing Multi Operator Message MOM-MOM-24-0482-01B, dated September 13, 2024. Note 1 to paragraph (g): Additional guidance for accomplishing the actions required by paragraph (g) of this AD can be found in Boeing Multi Operator Message MOM-MOM-24-0484-01B, dated September 16, 2024. (h) Exceptions to Boeing Multi Operator Message Specifications (1) Where table 1 and table 2 of Boeing Multi Operator Message MOM-MOM-24-0482-01B, dated September 13, 2024, refer to the "issue date of this Alert MOM," this AD requires using the effective date of this AD. (2) Where table 1 and table 2 of Boeing Multi Operator Message MOM-MOM-24-0482-01B, dated September 13, 2024, specify contacting Boeing for repair instructions, this AD requires repair using a method approved in accordance with the procedures specified in paragraph (j) of this AD. (3) Where table 1 and table 2 of Boeing Multi Operator Message MOM-MOM-24-0482-01B, dated September 13, 2024, specify inspecting the "wing lower aft skins for any fuel leak," this AD requires replacing that text with "wing lower aft skins and doublers for any fuel leak." (i) On-Condition Report If any crack or fuel leak is found during any inspection required by paragraph (g) of this AD, at the applicable time specified in paragraph (i)(1) or (2) of this AD, submit a report of positive findings to The Boeing Company via the Boeing Communication System (BCS). The report must include the crack size, crack location, and fuel leak location, as applicable. (1) If the inspection was done on or after the effective date of this AD: Submit the report within 10 days after the inspection. (2) If the inspection was done before the effective date of this AD: Submit the report within 10 days after the effective date of this AD. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, AIR-520, Continued Operational Safety 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 (k)(1) of this AD. Information may be emailed to: AMOC@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (3) 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-520, Continued Operational Safety 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. (k) Related Information (1) For more information about this AD, contact Wayne Ha, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 562-627-5238; email: Wayne.Ha@faa.gov. (2) Material identified in this AD that is not incorporated by reference is available at the address specified in paragraph (l)(3) of this AD. (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) Boeing Multi Operator Message MOM-MOM-24-0482-01B, dated September 13, 2024. (ii) [Reserved] (3) For Boeing material identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-5600; telephone 562-797-1717; website myboeingfleet.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 October 9, 2024. Peter A. White, Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2024-24443 Filed 10-21-24; 11:15 am]BILLING CODE 4910-13-P