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 Jan. 26, 2026. Document 2026-01370. Updated Nov. 15, 2026.

What it does

The FAA proposes to supersede Airworthiness Directive (AD) 2018-11-14, which applies to certain The Boeing Company Model 767-300 and -300F series airplanes. AD 2018-11-14 requires high frequency eddy current (HFEC) inspections for cracking of the lower outboard wing skin, and repair or modification if necessary. AD 2018-11-14 also requires one of three follow-on actions: Repeating the HFEC inspections, modifying certain internal stringers and oversizing and plugging the existing fastener holes of the lower wing or modifying the external doubler/tripler and doing repetitive post-modification inspections. Since the FAA issued AD 2018-11-14, it was determined that, for certain airplanes, the area of the lower wing skin in the vicinity of the critical inboard end fasteners of installed repair doublers must be inspected. In addition, it was determined that airplanes who have installed Supplemental Type Certificate (STC) ST01920SE and removed the STC winglets are also affected by the unsafe condition. This proposed AD would continue to require the actions in AD 2018-11-14, add airplanes to the applicability who have installed STC ST01920SE and removed the STC winglets, and, for certain airplanes, would require repetitive internal and external HFEC inspections of the lower outboard wing skin common to the external doubler repair at stringer L-9.5 and repair if necessary. 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

612 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 March 12, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-01370
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	Jan. 26, 2026
Comments close	March 12, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-0023

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