Architecting Zero-Trust Domain Segregation under ARINC 811 and FAA AC 119-1

Core aerospace engineering and protocols for Network Domain Segregation.

The Nightmarish Scenario of Cockpit Intrusion

Allowing a malicious passenger on the cabin Wi-Fi network to pivot across subnets and inject false commands into the fly-by-wire flight control computer could result in an unrecoverable aircraft crash.

Enforcing the Four Aviation Security Domains

EvtolSecurity implements certified multi-layer domain segregation: the Aircraft Control Domain (ACD) operates on dedicated physical buses with zero network routing to the passenger cabin. All diagnostic data flows out via one-way optical data diodes that physically prevent reverse packet injection.

Aircraft Control Domain (ACD): Isolated fly-by-wire controls with zero incoming external routing.
Airline Information Services Domain (AISD): Managing electronic flight bags and engine telemetry.
Passenger Information Domain (PIESD): Passenger internet access isolated via optical data diodes.
Hardware Data Diodes: Allowing telemetry out while physically blocking any ingress packets.

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