banner - Key figures 2020

Number of flights and flight movements



flight movements controlled by skeyes in 2020. A flight may be subject to several movements, such as for example when made to wait in a holding pattern for landing. The number of movements reflects the workload of air traffic controllers.



number of flights managed by skeyes


- 49,96%

drop in air traffic compared to 2019 (number of flights). The impact of the health crisis on the volume of air traffic has been enormous.

Number of flight movements managed per unit

Number of flights managed per unit


9.4 million

passengers flew in 2020 from or through Belgian public airports



fewer passengers compared to 2019. The health crisis hit the aviation sector hard in 2020.


1.1 million tons

of goods passed through Liege Airport in 2020, an increase of 24%. This rise is due to the transport of medical equipment but also to the growth in e-commerce and parcel transport.

Punctuality: efficient management of air traffic flows



of flights were managed in a punctual manner by skeyes in 2020

En-route traffic

0.06 min / flight (-92.5%)

= 3.6 seconds delay per flight

CRSTMP causes These are causes that can be influenced by air traffic control: C-Capacity, R-Routing, S-Staffing, T-Equipment, M-Airspace Management, P-Special Events

skeyes has an en-route punctuality rate better than the FABEC average (Belgium, Netherlands, Luxembourg, Germany, France and Switzerland).

Comparison of average delay per flight in FABEC (CRSTMP causes)

skeyes : 0.06 min/flight
Average for FABEC control centres: 0.14 min/flight

Punctuality at airports

Brussels Airport
0.37 min / flight

= 22.2 seconds delay per flight

Weather conditions are the main cause of arrival delays at Brussels Airport (90.8%).

0.03 min / flight

= 1.8 seconds delay per flight if only the CRSTMP causes that skeyes can control are taken into account.

Antwerp Airport
0 min / flight

= 0 seconds delay per flight

Brussel South Charleroi Airport
0 min / flight

= 0 seconds delay per flight

Liege Airport
0.15 min / flight

= 9 seconds delay per flight

Weather conditions are the sole cause of arrival delays at Liege Airport (100%).

Ostend-Bruges Aiport
0 min / flight

= 0 second delay per flight

Pricing changes in 2020



The Determined Unit Cost (DUC) is a calculation basis for setting the en-route unit rate, i.e. the price of a service unit in a given airspace. Due to the health crisis, performance plans relating to service costs will only be submitted to the European bodies in October 2021 for the 3rd five-year reference period (2020-2024).



unit rate charged by skeyes for an en-route service unit in the airspace for which it is responsible

For en-route traffic, the charges are in proportion to the distance flown and the square root of an aircraft's mass. A service unit corresponds to the control of an aircraft of 50 tonnes over 100 kilometres.

skeyes continued to hire for the resumption of activities



number of employees on 31 December 2020



new employees were hired in 2020



new air traffic controllers completed their training and entered into service in 2020



candidates air traffic controllers started their training in 2020

Number of employees on 31 December

Weather and aeronautical information: data essential for safety



Notams produced by the skeyes Brussels Notam Office

Notam (Notice to Airmen) are messages published for the purpose of notifying pilots of changes in airspace and on the ground.



number of special activity requests handled by the skeyes SPACC unit

The special activities coordinated by the SPACC unit include flights to calibrate ground-based air navigation infrastructure, photo and video flights (e.g. during major sports events), drone flights in controlled airspace, thermal-imaging flights as well as fireworks.



surgical masks have been distributed to staff

hydroalcoholic gel


litres of alcohol gels have been used