Airworthiness Directives; Dassault Aviation Airplanes

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register April 6, 2026. Document 2026-06627. Updated Nov. 13, 2026.

What it does

The FAA is adopting a new airworthiness directive (AD) for certain Dassault Aviation Model FALCON 2000EX airplanes. This AD was prompted by a report of simultaneous failures of the main DC buses powered by Generator 1 (GEN1), and Generator 2 (GEN2) after flap extension during approach. This AD requires revising the existing airplane flight manual (AFM). 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 488 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

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

Since then:

What happens next and when

This AD is effective May 11, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-06627
Action	Final rule.
Agencies	Transportation Department; Federal Aviation Administration
Published	April 6, 2026
Effective date	May 11, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2025-2553

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