1981 Armenia mid-air collision
The 1981 Armenia mid-air collision occurred on 18 July 1981 when a Soviet Air Defense Forces Sukhoi Su-15 crashed into the tail of a Transporte Aéreo Rioplatense Canadair CL-44 commercial transport which had strayed into Soviet airspace over the Armenian Soviet Socialist Republic . 
<triplet> 1981 Armenia mid-air collision <subj> 18 July 1981 <obj> point in time