How many passenger service flights did the only other counterpart of the supersonic aircraft Concorde complete?
Supersonic aircraft:  Only two, Concorde and the Tupolev Tu-144, ever entered service for civil use as airliners. Tupolev Tu-144:  It conducted 55 passenger service flights, at an average service altitude of 16,000 m and cruised at a speed of around 2,000 km/h (Mach 1.6).
i don't know