 The old aircraft, built between 1967 and 1969, were unpopular with the customers because of low comfort, high noise levels and many technical problems.Customers would often complain when they realized they would have to travel with a F27 rather than a DC-9.A further five F27 were bought from Aero Trasporti Italiani in 1985, costing 70 million Swedish kronor (SEK).