Norwegian Air reported that four Swedish and Danish subsidiaries had filed for bankruptcy and said it had ended staffing contracts in Europe and the United States, putting some 4,700 jobs at risk.
The airline is seeking to convert debt to equity, money from shareholders and Norwegian state guarantees in a bid to survive the coronavirus crisis.
It said the four companies are staffing units and the cancelled agreements involve firms providing crews based in Spain, Britain, Finland, Sweden and the United States.
Combined, it said some 4,700 pilots and cabin crew members would be affected while about 700 pilots and 1,300 cabin crew based in Norway, France and Italy remained unaffected.