The SESAR3 ATC-TBO project aims to validate trajectory based operations (TBO) use cases for optimised flights and sustainable air traffic growth. Downlinked airborne trajectories - with enhanced conflict detection and resolution tools supported by lateral and vertical clearances - allow air traffic controllers to better anticipate the aircraft’s planned trajectory and to support continuous climb and descent operations with less tactical interventions and level offs. Thus, enabling reduced controller workload and optimised flight profiles. Trajectory based operations (TBO) shares the common plan for a flight’s trajectory across all phases of flight. The ATC-TBO project performs industrial research for TBO use cases that provide flexibility and address uncertainties and variables in the tactical execution phase – i.e. within the coordination and separation horizon of the planner and executive controllers - for en-route and TMA operations.
The project comprises four work packages, namely:
* Work Package 1: Project management.
* Work Package 2: Solution #4 (0468)* Improved separation management via enhanced trajectory predictions, automation support and integrated AWAs (initial maturity level = TRL4/V2, target = TRL6/V3).
* Work Package 3: Solution #5 (0469) Improved air/ground trajectory synchronisation via lateral and vertical CDPLC clearances with automation support (initial maturity = TRL4/V2, target = TRL6/V3).
* Work Package 4: Solution #6 (0470) Advanced separation management and air/ground synchronisation in tactical TBO environment with conditional and high automation (Initial maturity = TRL2/V1, target = TRL4/V2).
Building on SESAR2020 @4DSkyways, the project aims to:
* Focus on value by validating performance benefits for environment, operational efficiency, capacity, cost efficiency, safety, and security.
* Engage with our key stakeholders – especially flight crew and air traffic controllers – to ensure that our TBO solutions are operationally acceptable, and they are fully involved in aspects that might impact their work including advanced automation.
* Promote a collaborative working environment – a partnership between operational and industry partners – that delivers useful and accessible deliverables.
With project coordination from EUROCONTROL, the team comprises 14 ANSPs, 1 airspace user, 9 industry partners, 5 research establishments and 1 university. 21 validation exercises are planned – including several real-time simulations – with validation results for three SESAR solutions at technology readiness levels 4 and 6 due in 2026.
