Through trajectory-based operations and 4D trajectory data, Vianair establishes shared flight path and timing information across five key operational areas.
The 4D trajectory offers a unified reference. The 5A framework brings the stakeholders together.— Robert KiddPEACHTREE CITY, GA, UNITED STATES, September 22, 2026 /EINPresswire.com/ — Vianair has unveiled a 5A framework designed to enhance the exchange of flight data across five operational sectors that oversee an aircraft’s complete journey from departure to arrival.
This framework tackles a persistent issue in aviation: while airlines, Air Navigation Service Providers (ANSPs), Air Traffic Control (ATC), the airplane and flight deck, and airports all play a part in a single flight, they frequently operate using distinct systems and workflows to make decisions.
Vianair’s 5A framework labels these five sectors as Airline, ANSP, Airplane, ATC, and Airport, relying on a shared aircraft trajectory as a consistent operational baseline.
At the core of this framework lies Trajectory-Based Operations (TBO), supported by four-dimensional trajectory data. A 4D trajectory incorporates time alongside the standard three spatial coordinates of an aircraft’s route.
By combining latitude, longitude, altitude, and time, a 4D trajectory specifies both the location and the timing of an aircraft’s expected position. As operational circumstances evolve, the trajectory can be adjusted to reflect the aircraft’s anticipated path and schedule.
“The 4D trajectory provides the common language. The 5A framework connects the participants,” remarked Robert Kidd of Vianair.
Tackling Separate Operational Systems
Each of the five sectors holds a distinct role within the aviation ecosystem.
Airlines oversee schedules, aircraft usage, crews, passengers, and fuel. ANSPs handle broader airspace capacity, traffic management, and system-wide demand, whereas ATC focuses on tactical control, separation, and sequencing of individual flights. The Airplane sector represents the aircraft and cockpit, where crews carry out the trajectory and adapt to in-flight changes. Airports manage runways, gates, ground movements, and infrastructure that support arrivals and departures.
Choices in one sector can influence multiple others.
For instance, a shift in runway configuration may modify an aircraft’s departure or arrival procedures and trajectory. Such a change can impact flight duration and fuel consumption, ATC sequencing, airspace demand, arrival schedules, gate assignments, and airline operations.
Currently, details about these impacts may traverse numerous systems and entities as the operation progresses.
With the 5A framework, an continuously refreshed 4D trajectory would serve as a shared reference, enabling participating organizations to assess how a change might affect their specific parts of the operation.
Applying TBO and 4D Trajectories Throughout the Flight
The framework leverages the aviation industry’s ongoing advancements in trajectory-based operations, where an aircraft’s projected trajectory becomes a key element in planning and operational choices.
In a 5A setting, airlines could leverage trajectory data to evaluate fuel, schedules, fleet, and other operational factors. ANSPs and ATC could integrate trajectory and timing information into decisions about demand, airspace, and sequencing. The flight deck could access updated trajectory data as conditions shift, while airports could use expected arrival and departure times to plan gates, runways, and ground activities.
The goal is to give the various operational sectors a common point of reference while preserving their unique duties and specialized systems.
Vianair is advancing this framework through tools across its aviation technology platforms, such as procedure design, automated charting, operational analysis, flight tracking, and airport visualization. Core capabilities are already deployed within Vianair’s platforms, with further cross-sector integration still in progress.
About Vianair
Vianair, an aviation technology company established in 2017, develops software and data solutions for airlines, airports, and air navigation service providers. Its technologies support aviation planning and operational decision-making in areas like instrument flight procedure design, automated charting, flight tracking, airport operations, and aviation analytics, all aimed at enhancing safety, efficiency, and the passenger experience
Stavros Sidiropoulos
Vianair, Inc.
email us here
Visit us on social media:
LinkedIn
