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: 2023-25-10 The Boeing Company: Amendment 39-22637; Docket No. FAA-2023-1648; Project Identifier AD-2022-01501-T. (a) Effective Date This airworthiness directive (AD) is effective February 7, 2024. (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 Service Letter 787-SL-25-025, dated September 6, 2022. (d) Subject Air Transport Association (ATA) of America Code 25, Equipment/furnishings. (e) Unsafe Condition This AD was prompted by a reported quality escapement where the seat track fitting nuts were under-torqued on some flight attendant seats in production. The FAA is issuing this AD to address under-torqued seat track fitting nuts. The unsafe condition, if not addressed, could result in the forward-facing flight attendant seats breaking free in a high load event, causing injury to flight attendants, and blocking the exits during emergency egress. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Re-torque Seat Track Fitting Nuts Within 6 months after the effective date of this AD, re-torque each free-standing attendant seat track fitting nut in accordance with Steps 2., 3., and 4. of "Suggested Operator Action" of Boeing Service Letter 787-SL-25-025, dated September 6, 2022. (h) 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 (i) 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. (i) Related Information For more information about this AD, contact Tony Koung, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 206-231-3985; email:
[email protected] . (j) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Boeing Service Letter 787-SL-25-025, dated September 6, 2022. (ii) [Reserved] (3) For service information 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 service information 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 December 14, 2023. Victor Wicklund, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2023-28855 Filed 1-2-24; 8:45 am]BILLING CODE 4910-13-P