 By 1988 , building costs had increased from NOK 88 to 131 million . The municipalities had co @-@ signed for a foreign loan , and were forced to pay NOK 3 @.@ 5 million annually just in interest , in addition to the operating cost of the airport ; these were aggravated by not only the loss of the sole scheduled service , but also considerably less charter traffic than estimated . In 1990 , the airport company was forced to refinance , and NOK 61 of 85 million in dept was refinanced , and the obligations transferred from the airport company to the municipalities and the county . However , by 1991 , passenger numbers were above 20 @,@ 000 , three quarters coming from charter traffic . On 1 January 1996 , Fagernes Airport was nationalized , along with 25 other regional airports , and put under the control of the Norwegian Airport Authority ( now Avinor ) . Following the closure of Geilo Airport , Dagali in 2003 , Fagernes experienced an increase in charter traffic . 
