Airworthiness Directives; The Boeing Company Airplanes

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register April 29, 2026. Document 2026-08306. Updated Nov. 12, 2026.

What it does

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.

The Federal Aviation Administration's summary, as published in the Federal Register.

What changed in the regulation

1 part of Title 14 of the Code of Federal Regulations:

14 CFR 39

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The Federal Aviation Administration has published 485 final rules in 2026 so far, compared with 518 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

Before this

769 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

Since then:

What happens next and when

This AD is effective June 3, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-08306
Action	Final rule.
Agencies	Transportation Department; Federal Aviation Administration
Published	April 29, 2026
Effective date	June 3, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2025-1114

Source: the Federal Register (public domain). The document in the Federal Register