 On 30 January 1953 , Braathens SAFE applied to start a route from Oslo to Trondheim Airport , <unk> . A trial permit was granted , and the first flight was made on 18 August . Because <unk> had a grass runway , Trondheim Airport , <unk> was used during bad weather . SAS flew a morning flight from Oslo , while Braathens flew the morning route from Trondheim . In 1953 , Braathens SAFE stated that to keep their 210 employees and fleet of one DC @-@ 4 , one DC @-@ 3 and two Herons , they would have to receive future domestic services , to compensate for more than 90 % of their revenue disappearing with the loss of the Far East route . In 1953 , Braathens SAFE applied to fly five routes : Bardufoss – Alta – <unk> ; Stavanger – Bergen – Trondheim ( both with Herons ) ; Tromsø – Alta – <unk> ; Bodø – Harstad ; and Bodø – Harstad – Tromsø ( all with de Havilland Canada <unk> @-@ 3 <unk> ) . The five routes would require NOK 725 @,@ 000 in annual subsidies . The concessions were granted to DNL , who allowed their partially owned subsidiary Widerøe to fly the sea routes . 
