2025-06-10: Stabilizers

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: 2025-06-10 The Boeing Company: Amendment 39-22998; Docket No. FAA-2024-2410; Project Identifier AD-2024-00509-T. (a) Effective Date This airworthiness directive (AD) is effective May 2, 2025. (b) Affected ADs None. (c) Applicability This AD applies to The Boeing Company Model 787-8, 787-9, and 787-10 airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 2024. (d) Subject Air Transport Association (ATA) of America Code 55, Stabilizers. (e) Unsafe Condition This AD was prompted by possible misalignment, at final assembly, of the horizontal stabilizer pivot pin lockring, outer pivot pin, and outboard spacer. The FAA is issuing this AD to address a pivot pin outboard spacer that has been found to not be set correctly flush against the horizontal stabilizer pivot bearing and outboard washer due to a misaligned pivot pin lockring. The unsafe condition, if not addressed, could result in decreased lateral load capacity, which could cause the loss of pivot pin retention parts and lead to loss of the horizontal stabilizer and loss of continued safe flight and landing. (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 the "Compliance" paragraph of Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 2024, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 2024. Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin B787-81205-SB550013-00, Issue 001, dated August 30, 2024, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 2024. (h) Exceptions to Requirements Bulletin Specifications (1) Where the Compliance Time columns of the tables in the "Compliance" paragraph of Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 2024, refers to the Issue 001 date of Requirements Bulletin B787-81205-SB550013-00 RB, this AD requires using the effective date of this AD. (2) Where flag notes [1] and [3] of Table 1 of Task 5 in Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 2024, state to do a detailed inspection of the horizontal stabilizer pivot pin "right side," this AD requires replacing that text with "left side." (3) Where Step 15 of Table 1 of Task 6 in Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 2024, specifies to install a trap fitting having part number "182W6405-1," this AD requires replacing that text with "313Z6455-501." (4) Where Tasks 5 to 8 specified in Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 2024, specify a part number for the antirotation plate of "313Z6455-501," this AD requires replacing that text with "-." (i) 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 (j)(1) of this AD. Information may be emailed to: [email protected]. (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. (j) Related Information (1) For more information about this AD, contact Joseph Hodgin, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 206-231-3962; email: [email protected]. (2) Material identified in this AD that is not incorporated by reference is available at the address specified in paragraph (k)(3) this AD. (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) Boeing Alert Requirements Bulletin B787-81205-SB550013-00 RB, Issue 001, dated August 30, 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 [email protected]. Issued on March 21, 2025. Paul R. Bernado, Acting Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2025-05295 Filed 3-27-25; 8:45 am]BILLING CODE 4910-13-P