SAS demanded preferential treatment .
Braathens SAFE threatened to flag out and the government gave them a concession that lasted until 1954 , on condition they establish a technical base at Stavanger Airport , Sola .
SAS demanded preferential treatment , but Braathens SAFE threatened to flag out and the government gave them a concession that lasted until 1954 , on condition they establish a technical base at Stavanger Airport , Sola .