The instrument landing system was operational from 1 August 1986 and on 12 August Coast Aero Center started their two routes, using a ten-seat Beechcraft Super King 200 One week later, the ministry changed the concession for the Oslo and Skien route, so it was also awarded to Coast Aero Center. The service started on 24 October 1986. By November the Norwegian Civil Aviation Administration had approved the landing lights and other upgrades to the instrument system, which cost NOK 3.9 million, causing the airport to have to borrow money. It also bought a used fire engine from Sola. The need for transport was extra high on Monday morning and Friday afternoon, when weekly commuters were flown in. The airport lost NOK 668,000 in 1986.