IFAV3

Flexible ATCO Deployment: Skills for the Skies
Europe's air traffic system is facing one of the greatest challenges in its history. After dramatic declines during the COVID-19 crisis, air traffic is now reaching record levels. However, geopolitical developments, in particular the Ukraine conflict, have led to massive changes in the transport network. The future of air transport remains uncertain due to political and economic instability, both in terms of traffic volumes and routes.
One of the key challenges is to adapt the provision of air traffic control (ATC) services flexibly and at short notice to these ever-changing circumstances. There is already a shortage of around 700 air traffic controllers, and the licensing system for training and endorsing controllers is not equipped to meet the demands of a dynamic traffic environment. Currently, controllers must complete a set number of hours and pass assessments to become and remain authorised to control a sector - a process that is not flexible enough to respond to current changes in traffic volumes.
Flexibility, efficiency, and innovation for a safe and sustainable air traffic control system
This is where the SESAR project IFAV3 (Increased flexibility of ATCO validations - V3) comes in, which aims to make controller rostering more flexible. As part of this project, DLR is developing and investigating the innovative concept of skill- and competency-based endorsements in en-route upper airspace.
This new approach uses specialised algorithms to reliably measure and quantify the skills, competencies and experience of air traffic controllers based on the traffic they have previously handled in different sectors under different conditions, and to compare them with the predicted requirements for a given sector and time.
This innovative approach will be validated at Maastricht Upper Area Control by the end of 2025 and will allow more flexible deployment of controllers.
With this flexible deployment strategy, air traffic control will be able to respond more quickly and effectively to political and economic changes. This will lead to a more efficient use of the entire air traffic system and allow faster adaptation to unforeseen challenges - an essential advantage for the future of air traffic.

About IFAV3
IFAV3 is a three-year project of the SESAR 3 Joint Undertaking, the main objective of which is to increase the flexibility of air traffic controller (ATCO) rostering in the upper airspace by enabling them to hold and maintain more endorsements for specific sectors / sector groups than today. New tools and processes will not only help to improve the cost-efficiency of air traffic control, but will also help to compensate for possible staff shortages.
Building on from the previous SESAR research (e.g. PJ.33-01a and PJ.10-73 IFAV), IFAV3 develops and validates solutions to:
- Simplify the ATCO validation process by investigating ready-to-use procedures, advanced tools, automation, as well as training, rating maintenance and regulatory changes, while creating a standard and methodological framework that will ensure increased safety;
- Use and further validate solutions from previous projects and apply them to remote tower centres.
The project consortium consists of 13 companies from 7 different countries, highly specialised in the field of aviation. The consortium is led by DLR.
Key data
Project | IFAV3 (Increased Flexibility of ATCO Validations – V3) |
Participants | DLR (Coordinator) NLR ENAIRE DEEP BLUE ENAV INDRA LFV UPM LIU NATS |
Duration | 2023 – 2026 |
Funding | SESAR 3 JU / Horizon Europe programme |
Website |
The project is supported by the SESAR 3 Joint Undertaking and its founding members. Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or SESAR 3 JU. Neither the European Union nor the SESAR 3 JU can be held responsible for them.

SESAR 3 JU / EU