Em particular, parece ser a variante "UT" (treinamento):
Imagem fonte
Full-scale production of the aircraft began in 1966, with 188 Tu-128s built to 1970, that total apparently including the prototype. Ten "Tu-128UT" trainers were built as well, with a new cockpit for a flight instructor fitted into a swollen nose.
Outras informações sobre wikipedia
The Tupolev Tu-28 (NATO reporting name Fiddler) was a long-range interceptor aircraft introduced by the Soviet Union in the 1960s. The official designation was Tu-128, but this designation was less commonly used in the West.
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The Tu-128's only publicly reported combat operation was the destruction of NATO reconnaissance balloons. The aircraft remained in service until 1990.