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 14, 2026. Document 2026-14109. Updated Nov. 8, 2026.

What it does

The FAA is adopting a new airworthiness directive (AD) for certain Textron Aviation Inc., Model 408 airplanes. This AD was prompted by the manufacturer's revision of the aircraft maintenance manual (AMM) to add a detailed inspection for the horizontal stabilizer spar, and change the airplane serial effectivity for the vertical stabilizer spar detailed inspection. This AD requires revising the Airworthiness Limitations Section (ALS) of the existing 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

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

July 14, 2026 Final rule. Airworthiness Directives; Bombardier, Inc., Airplanes
July 14, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Leonardo S.p.a Helicopters
July 13, 2026 Final rule; request for comments. Airworthiness Directives; The Boeing Company Airplanes
July 10, 2026 Final rule. Airworthiness Directives; Airbus SAS Airplanes
July 10, 2026 Final rule. Airworthiness Directives; Airbus SAS Airplanes
July 10, 2026 Final rule. Airworthiness Directives; Bombardier, Inc., Airplanes
July 10, 2026 Final rule; request for comments. Airworthiness Directives; CFM International, S.A. Engines
July 10, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Safran Helicopter Engines, S.A. Engines

Since then:

What happens next and when

This AD is effective August 18, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-14109
Action	Final rule.
Agencies	Transportation Department; Federal Aviation Administration
Published	July 14, 2026
Effective date	Aug. 18, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-7217

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