Aeroflot Flight 415
On 28 July 1962 the Antonov An-10 operating the route crashed near Gagra , Abkhaz ASSR , Georgian SSR , killing all 81 passengers and crew on board . 
<triplet> Gagra <subj> Abkhaz ASSR <obj> located in the administrative territorial entity <triplet> Abkhaz ASSR <subj> Georgian SSR <obj> located in the administrative territorial entity