Airworthiness Directives; Bell Textron Canada Limited Helicopters

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Sept. 17, 2026. Document 2026-19052. Updated Nov. 5, 2026.

What it does

The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 505 helicopters. This AD was prompted by reports that the identification plate affixed to certain tail cone assemblies contains an incorrect part number (P/N), which may not accurately convey the life limit. This AD requires verifying the tail cone assembly part number and, if necessary, replacing the incorrect tail cone assembly identification plate with a new tail cone assembly identification plate containing the correct P/N and updating the existing log book or equivalent record for the helicopter. 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

1002 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

Sept. 17, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Pratt & Whitney Engines
Sept. 17, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Airbus SAS Airplanes
Sept. 17, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Sept. 17, 2026 Final rule. Airworthiness Directives; Airbus SAS Airplanes
Sept. 17, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
Sept. 17, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
Sept. 16, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Sept. 15, 2026 Final rule. Airworthiness Directives; MD Helicopters, LLC Helicopters

Since then:

What happens next and when

This AD is effective October 22, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-19052
Action	Final rule.
Agencies	Transportation Department; Federal Aviation Administration
Published	Sept. 17, 2026
Effective date	Oct. 22, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-4658

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