 On 1 September 1989 , Ludvig G. Braathens Rederi founded Braathens Helikopter . The shipping company had signed an agreement with the oil companies Norsk <unk> , Phillips Petroleum and <unk> to provide helicopter transport for their crews to their offshore oil installations <unk> , <unk> , <unk> , <unk> . This was the first time the incumbent Helikopter Service had received competition on their offshore helicopter services . The initial agreement secured Braathens Helikopter a revenue of NOK 800 million in the course of five years , and gave the company a 20 % market share . Four 19 @-@ <unk> <unk> Super Puma helicopters were ordered , each costing NOK 60 million . Total investment costs were NOK 300 million . Two helicopters were stationed at Stavanger Airport , Sola and two at Bergen Airport , <unk> . The initial contract involved flying 10 @,@ 000 passengers per year . 
