Special Conditions: Honeywell Aerospace US LLC, Dassault Aviation Model Falcon 900EX Airplane; Electronic System Security Protection From Unauthorized External Access

What it does

These special conditions are issued for the Dassault Aviation Model Falcon 900EX airplane. This airplane, as modified by Honeywell Aerospace US LLC (Honeywell) will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. This design feature is the installation of a digital systems architecture that will allow increased connectivity to and access from external network sources, (e.g., operator networks, wireless devices, internet connectivity, service provider satellite communications, electronic flight bags, etc.) to the airplane's previously isolated electronic assets (networks, systems, and databases). The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

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 25

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.

What happens next and when

This action is effective on Honeywell on June 18, 2026. Send comments on or before August 3, 2026.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Docket FAA-2026-4885 on Regulations.gov
• Title 14 on eCFR

The record as published

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