Seen at Tashkent Airport on 20 September at the conclusion of a 110-minute supersonic flight from Moscow - a distance of 1700 mls (2735 km) - this Tupolev Tu-144 development model shows a number of differences from the prototype. The nose is longer, with additional windows in the visor, the air intakes are of revised design and the main and nose undercarriage units have been repositioned.