Some parts of the plane still work!
Tu-144 which first flew on 31 December 1968 (two months before Concorde) is the fastest supersonic commercial airliner ever made. Despite the similarity of the Tu-144 to Concorde, there were significant differences in the control, navigation and engine systems. The Tu-144 was in some ways a more technologically advanced aircraft, but in areas such as range, aerodynamic sophistication, braking and engine control, it lagged behind Concorde. A total of 16 airworthy Tu-144s were built, Aeroflot had only made 55 scheduled passenger flights with their Tu-144s before they put them out of service. (PICS)