Suluk is a Greenlandic private limited company owned by Isavia ANS. The air traffic controllers employed by Suluk provide, together with air traffic controllers from Isavia ANS, approach and tower services at Kangerlussuaq Airport. Isavia ANS and the Greenlandic airport company Mittarfeqarfiit have effective agreement for this service.
Tern Systems ehf. develops and produces ATM software systems. These systems are used in area control centres, airport towers and in air traffic controller training.
Systems from Tern are used in Iceland, Ireland, South-Korea, Spain, Marocco and Indonesia. Tern Systems has around 50 staff and the company HQ is located in Iceland.