Data / Federal rules / 2026-08306
Airworthiness Directives; The Boeing Company Airplanes
The Federal Aviation Administration published this final rule in the Federal Register on April 29, 2026. It took effect on June 3, 2026.
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What the agency says
The FAA is superseding Airworthiness Directive (AD) 2023-08- 04, which applied to certain The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. AD 2023-08-04 required a detailed visual inspection of all door 1 and door 3 lavatory and galley potable water systems for any missing or incorrectly installed clamshell couplings, and applicable on-condition actions. This AD was prompted by discoveries by Boeing that some couplings did not have the required safety strap and that they have developed a design solution that replaces the couplings with couplings that have safety straps. This AD retains the requirements of AD 2023-08-04 and requires, for certain airplanes, a detailed inspection of all clamshell couplings for the presence and correct installation of safety straps at door 1 and door 3 lavatories and galleys with a potable water system and applicable on-condition actions, which would terminate the existing requirements. This AD also prohibits the installation of affected parts at inspection locations. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-08306
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- April 29, 2026
- Takes effect
- June 3, 2026
- Dates
- This AD is effective June 3, 2026.
- Docket
- Docket No. FAA-2025-1114; Project Identifier AD-2025-00314-T; Amendment 39-23321; AD 2026-09-01
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 4
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in April 2026
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.