Operational service Tupolev Tu-144
tu-144 distinctive droop-nose @ maks-2007 exhibition
the tu-144s went service on 26 december 1975, flying mail , freight between moscow , alma-ata in preparation passenger services, commenced on 1 november 1977.
the passenger service ran semi-scheduled service until first tu-144d experienced in-flight failure during pre-delivery test flight, crash-landing on 23 may 1978 2 crew fatalities. tu-144 s 55th , last scheduled passenger flight occurred on 1 june 1978.
an aeroflot freight-only service recommenced using new production variant tu-144d ( d dal nyaya – long range ) aircraft on 23 june 1979, including longer routes moscow khabarovsk made possible more efficient kolesov rd-36-51 turbojet engines, increased maximum cruising speed mach 2.15.
including 55 passenger flights, there 102 scheduled flights before cessation of commercial service.
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