The ATL 98 Carvair was a cargo transporter, derived by the British aircraft firm Aviation Traders Ltd from the well-known DC-4 airliner. The main difference was a cargo bay in the forward fuselage with doors opening to the front, and also the relocation of the cockpit directly above it. In all, 21 airframes were converted, and most were used by the transport company British United Air Ferries. Otherwise, three airplanes were bought by Australia, and later some of the British machines were resold to the USA, France, Spain, New Zealand, Ireland, Canada and South Africa. The type was last operated at the end of 2005, more than 40 years from the moment of their creation.