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 July 9, 2026. Document 2026-13869. Updated Nov. 8, 2026.

What it does

The FAA proposes to supersede Airworthiness Directive (AD) 2023-07-09, which applies to certain The Boeing Company Model 747-400 and -8 series airplanes. AD 2023-07-09 requires inspecting for wear of the transfer pump housing inlet check valves and transfer pump motor impeller inlet adapters for the horizontal stabilizer fuel tank and doing corrective actions, if necessary, and limits the installation of affected parts. Since the FAA issued AD 2023-07-09, the manufacturer has developed further action to address the unsafe condition. This proposed AD would require repetitive inspections for damage of the transfer pump housing inlet check valves and transfer pump motor impeller inlet adapters for the horizontal stabilizer fuel tank and applicable on-condition actions. This proposed AD would also limit the installation of affected parts under certain conditions. The FAA is proposing this AD to address the unsafe condition on these products.

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

What it would change

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

14 CFR 39

Before this

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

Since then:

What happens next and when

The FAA must receive comments on this proposed AD by August 24, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-13869
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	July 9, 2026
Comments close	Aug. 24, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-7215

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