Support sustainable development

Belgocontrol is among the pioneers of the deployment of green landings that reduce both the fuel consumption and the noise of approaching planes. Today, Belgocontrol organises actions of continuous improvement in the domain, via collaboration with the airline companies and the optimisation of its procedures. Belgocontrol is also present on the front of renewable energies: by facilitating the installation of wind turbines and ensuring their harmonious development alongside the air traffic, Belgocontrol supports the energies of the future.


Continuous Descent Operation (CDO)

The CDO (Continuous Descent Operation) is an operation in which the plane descends continuously, as far as possible with minimal motor power, depending on the characteristics of the flight and of the air traffic situation. This allows for a reduction in noise pollution, the consumption of kerosene and greenhouse gas emissions.

atterissage 73.2%

of landings followed the green landing procedure at the airports of Brussels Airport, Liège and Charleroi where it was applied

Breakdown by airport where the CDO procedure is applied

Brussels Airport

Charleroi Airport

Liège Airport

Number of CDOs in absolute value compared to the total number of IFR arrivals


travaux 315

new filing requests for the installation of wind turbines submitted to Belgocontrol in 2017

ok 240

requests have already received a positive response. The others are either being analysed (39), were refused (26) for safety reasons, or were cancelled (10) by the requester

ok 1,098

wind turbines are active in Belgium

Belgocontrol is contributing the development of wind turbines in Belgium

In 2017, Belgocontrol reviewed its request for consent procedures concerning building permit requests for wind turbines. The requests are handled with shorter delays and stay valid for longer. Also, even before entering a request, the building promoters can have an overview of the zones surrounding aeronautical facilities, where wind turbines may or may not be built, thanks to a map on the Belgocontrol website.

Belgocontrol provides an opinion for each building permit request in the vicinity of the airport facilities. The proximity to large constructions, such as cranes, buildings or wind turbines, has an effect on radio navigation, radar and communication systems which are used by both civilian and military air control. They can disturb the signals of this equipment, with consequences for the air traffic: an erroneous positioning of planes on the radar screen, planes that are not detected or disruption of the landing systems are just a few examples. Guaranteeing the safety of air traffic obviously remains the first concern of Belgocontrol.

ok +81%

requests for consent on the installation of wind turbines in 2017 versus 2016

Partnership with the ULB

Yvon Englert, Rector of the Université Libre de Bruxelles and Johan Decuyper, CEO of Belgocontrol.

In 2017, Belgocontrol and the University of Brussels ULB concluded a partnership in terms of Research and Development. Conscious of its social responsibilities, Belgocontrol has been interested in the effects of air traffic on the environment for several years. The partnership with The Institute for Environmental Management and Land-use Planning (IGEAT) of the Sciences faculty of the Université Libre de Bruxelles (ULB) will allow the collection and analysis of lots of data and the development of new tools.
This partnership has already led to the creation of an application with urban purposes on the basis of the QGIS free software to provide geographic information integrating air traffic data which is useful to promoters of wind turbine projects.


atterissage 87%

in 2017, the take-offs and landings at Brussels Airport took place on preferential runways (Preferential Runway System)

Deviations to the PRS were due to meteorological conditions or the non-availability of the runways due to works or maintenance.

passagers 2,000

an average number of unique monthly visitors in 2017 at, the information site for local residents of Brussels Airport

“ The real numbers can shape the public debate about our airport activities. We want to contribute to this debate in a constructive and transparent manner. That’s the reason why we invest in operations systems monitoring. We also communicate the available data to inform a maximum number of stakeholders. ”


Use of arrivals per runway at Brussels Airport

Use of arrivals per runway at Brussels Airport