At the peak of détente, on March 11, 1974, a Lockheed L-1011 TriStar arrived in Moscow for three days of sales presentations and demonstrations [REF].
The prototype flew at Khodynka airfield (where Ilyushin's experimental factory was) on December 22, 1976 (Soviet airliners often flew before the close of calendar years due to the requirements of Five-Year Plans).