Vianair maps a 5A framework for shared flight operations

Vianair has outlined a 5A framework that uses 4D trajectory data to give airlines, ANSPs, ATC, airports and the aircraft itself a common reference for gate-to-gate decision-making. The company says the approach is meant to reduce the operational friction created when each stakeholder works in separate systems and processes.

Why it matters: - Aviation operations are split across five domains that make decisions in separate systems, even though each one affects the same flight. - Vianair’s 5A framework is designed to give those stakeholders a shared trajectory and timing reference, which could improve coordination across the gate-to-gate journey. - Better alignment on expected flight path and timing can affect fuel, scheduling, runway use, gate planning, airspace demand and arrival sequencing.

What happened: - Vianair outlined a 5A framework for coordinating flight operations across Airline, ANSP, Airplane, ATC and Airport domains. - The company said the framework uses a shared aircraft trajectory as a common operational reference. - Vianair tied the framework to trajectory-based operations and 4D trajectory data. - Robert Kidd of Vianair said, “The 4D trajectory provides the common language. The 5A framework connects the participants.”

The details: - A 4D trajectory adds time to the traditional three spatial dimensions of a flight path. - The concept combines latitude, longitude, altitude and time to show where an aircraft is expected to be and when it is expected to be there. - As conditions change, the trajectory can be updated to reflect the aircraft’s expected path and timing. - Airlines manage schedules, aircraft utilization, crews, passengers and fuel. - ANSPs manage airspace capacity, traffic flows and system-wide demand. - ATC handles tactical separation and sequencing of individual aircraft. - The Airplane domain covers the aircraft and flight deck, where crews execute the trajectory and respond to changing conditions. - Airports manage runways, gates, surface movements and supporting infrastructure for arrivals and departures. - Vianair said a runway change can alter departure or arrival procedures and trajectory. - That same change can affect flight time, fuel requirements, ATC sequencing, airspace demand, arrival timing, gate availability and airline scheduling. - Under the framework, a continuously updated 4D trajectory would serve as a common reference for participating organizations. - Airlines could use trajectory information to evaluate fuel, schedule, fleet and other operational decisions. - ANSPs and ATC could use trajectory and timing information in demand, airspace and sequencing decisions. - The flight deck could receive updated trajectory information as conditions change. - Airports could use expected arrival and departure information for gates, runways and surface activity. - Vianair said the goal is to support a common reference while keeping each domain’s responsibilities and specialized systems intact. - The framework is being developed through Vianair capabilities across procedure design, automated charting, operational analysis, flight tracking and airport visualization. - Vianair said the underlying capabilities are already in use in its platforms, while broader cross-domain integration is still in development. - Vianair is an aviation technology company founded in 2017. - The company develops software and data platforms for airlines, airports and air navigation service providers. - Vianair’s technologies support instrument flight procedure design, automated charting, flight tracking, airport operations and aviation analytics. - The company says its work focuses on improving safety, efficiency and the passenger experience. - More information is available on Stavros Sidiropoulos’s LinkedIn profile.

Between the lines: - The framework is less about replacing existing systems and more about creating a shared operational picture across them. - That matters because many flight disruptions start when one stakeholder changes a plan and the downstream effects are not visible fast enough to the others. - The emphasis on 4D trajectory data suggests Vianair is aiming for predictive coordination, not just better post-event reporting.

What’s next: - Vianair said additional cross-domain integration remains under development. - The practical test will be whether the framework can help different aviation stakeholders act on the same trajectory data without losing the speed and specificity of their own operating systems. - If adoption grows, the approach could become more relevant as airlines and air traffic organizations look for tighter coordination across increasingly complex flight operations.