 The first 737 @-@ 400 , LN @-@ <unk> , was delivered to the airline on 9 July 1989 . The 19 737 @-@ 200s were gradually handed to their owners , while seven 737 @-@ <unk> and seventeen 737 @-@ <unk> were delivered until 1994 . The investment cost NOK 4 @.@ 5 billion . By the end of 1993 , the company had NOK 3 @.@ 4 billion in debt . On 1 June 1989 , Erik G. Braathen , son of Bjørn G. , took over as CEO at the age of 34 . In 1992 , Busy Bee filed for bankruptcy ; the company 's fleet of three Fokker 50s were transferred to the newly established Norwegian Air Shuttle , which started wet @-@ leased operations along the West Coast for Braathens SAFE . As demand increased through the 1990s , the fleet was extended to six aircraft . 
