Two airplanes have flown at a critically close distance from each other in Russia's Rostov Oblast.
REN TV learned that one of these planes was en route from Moscow to Armenia’s capital city of Yerevan, whereas the other - from Stavropol to Moscow.
A traffic collision avoidance system (TCAS) was in operation in one of these aircrafts, and therefore the pilot of this airplane reduced the latter’s altitude to avoid a mid-air collision with the other plane, News.am reported.
