hat
Yon pwototip (OKB:. Izdeliye 044 - atik 044 premye te pran vòl sou 31 Desanm 1968 tou pre Moskou, de mwa anvan Concorde nan Tu-144 nan premye te kraze vitès la nan son sou 5 jen 1969, ak sou 15 Jiyè 1969 li te vin komèsyal la premye transpò dwe depase Mach de. Tu-144 a te entwodui nan sèvis pasaje sou 1 Novanm 1977, prèske de ane apre Concorde nan, men li te byento retire apre jis 55 pwograme vòl pasaje akòz pwoblèm ki kapab grav ak sekirite avyon epi li pa te re- prezante yo sèvis.
eng
A prototype (OKB: izdeliye 044 - article 044 first flew on 31 December 1968 near Moscow, two months before the Concorde. The Tu-144 first broke the speed of sound on 5 June 1969, and on 15 July 1969 it became the first commercial transport to exceed Mach two. The Tu-144 was introduced into passenger service on 1 November 1977, almost two years after the Concorde, but was soon withdrawn after just 55 scheduled passenger flights due to potentially severe problems with aircraft safety and was not re-introduced to service.