First supersonic airliner
Who
Unknown
What
1968/12/31 first
Where
()
When
The former Soviet Tupolev Tu-144 first flew on 31 December 1968, thereby becoming the first supersonic airliner to fly. It initially entered service in 1975 carrying mail and cargo, and carried its first commercial passengers in 1977, but was taken out of service in 1978 after a second fatal crash.

A single TU-144 was put into service for two years until 1998 by NASA as a 'flying laboratory' to study the dynamics of supersonic flight.