Airworthiness Directives; Textron Aviation Inc. Airplanes

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register July 24, 2026. Document 2026-15006. Updated Nov. 8, 2026.

What it does

The FAA is adopting a new airworthiness directive (AD) for certain Textron Aviation Inc. (Textron) Model B300 and B300C airplanes. This AD was prompted by the manufacturer's revision of the airworthiness limitations manual (ALM) to introduce revised inspection intervals to detect cracks in the wing spar or wing supporting structure. This AD requires revising the Airworthiness Limitations section (ALS) of the existing aircraft maintenance manual (AMM) or instructions for continued airworthiness (ICA) and the existing approved maintenance or inspection program, as applicable. 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 482 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

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

Since then:

What happens next and when

This AD is effective August 10, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-15006
Action	Final rule; request for comments.
Agencies	Transportation Department; Federal Aviation Administration
Published	July 24, 2026
Effective date	Aug. 10, 2026
Comments close	Sept. 8, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-7223

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