FAA issues special conditions for Honeywell/Dassault Falcon 900EX cybersecurity
For pilots and operators of connected business jets, this signals how the FAA is writing new certification rules for cybersecurity in the cockpit. It is a useful example of why avionics integration and EFB/internet connectivity are no longer just convenience issues—they now trigger formal airworthiness special conditions.
The FAA published final special conditions for the Dassault Falcon 900EX as modified by Honeywell Aerospace. The rule addresses a novel digital-systems architecture that increases connectivity from external networks (operator networks, wireless devices, internet, satcom, EFBs) into previously isolated aircraft electronic assets. Because existing Part 25 airworthiness standards do not adequately cover this design feature, the special conditions add security-protection requirements intended to maintain an equivalent level of safety. The action is effective June 18, 2026, with public comments accepted through August 3, 2026.